Question

如何实现像uber一样的可拖动地图？我正在使用谷歌地图v2。实际上我得到的解决方案是this post，并在这里分享我的完整解决方案

Answer 1

更新了最新代码，还包括使用自动填充功能的更改位置

可以找到完整的项目here

逻辑很简单我们需要framelayout并在framelayout内添加地图和标记布局，然后使制造商布局重力居中，并在相机更改时获取地图中心点的纬度和经度参考this answer 这是我的代码创建activity_maps.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:orientation="vertical">

<LinearLayout
    android:id="@+id/container_toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <include
        android:id="@+id/toolbar"
        layout="@layout/toolbar" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginTop="5dp"
        android:orientation="vertical">

        <TextView android:gravity="center_vertical"
            android:id="@+id/Locality"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:drawableLeft="@drawable/ic_btn_current_location"
            android:drawablePadding="@dimen/list_row_padding"
            android:ellipsize="end"
            android:padding="10dp"
            android:singleLine="true"
            android:text="Click to change location"
            android:textSize="@dimen/font_22" />

        <EditText
            android:id="@+id/Address"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:ellipsize="end"
            android:enabled="false"
            android:hint="Address"
            android:singleLine="true" />
    </LinearLayout>
</LinearLayout>
<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/container_toolbar">

    <fragment
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.sample.sishin.maplocation.MapsActivity" />
    <LinearLayout
        android:id="@+id/locationMarker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginBottom="30dp"
        android:gravity="center"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/locationMarkertext"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/rounded_corner_map"
            android:gravity="center"
            android:minWidth="250dp"
            android:paddingLeft="2dp"
            android:paddingRight="2dp"
            android:text=" Set your Location "
            android:textColor="@android:color/white" />

        <ImageView
            android:id="@+id/imageMarker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/add_marker" />
    </LinearLayout>



</FrameLayout>

在这里创建TextView backgound xml rounded_corner_map.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <solid android:color="#000000" />

    <stroke
        android:width="2dp"
        android:color="#FFFFFF" />

    <padding
        android:bottom="8dp"
        android:left="1dp"
        android:right="1dp"
        android:top="8dp" />

    <corners
        android:bottomLeftRadius="15dp"
        android:bottomRightRadius="15dp"
        android:topLeftRadius="15dp"
        android:topRightRadius="15dp" />

</shape>

这是我的活动类MainActivity.java

    package com.sample.sishin.maplocation;

    import android.Manifest;
    import android.app.AlertDialog;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.content.pm.PackageManager;
    import android.location.Location;
    import android.os.Handler;
    import android.os.ResultReceiver;
    import android.provider.Settings;
    import android.support.v4.app.ActivityCompat;
    import android.os.Bundle;

    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.Toolbar;
    import android.util.Log;
    import android.view.View;
    import android.widget.EditText;
    import android.widget.TextView;
    import android.widget.Toast;

    import com.google.android.gms.common.ConnectionResult;
    import com.google.android.gms.common.GoogleApiAvailability;
    import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
    import com.google.android.gms.common.GooglePlayServicesRepairableException;
    import com.google.android.gms.common.GooglePlayServicesUtil;
    import com.google.android.gms.common.api.GoogleApiClient;
    import com.google.android.gms.common.api.Status;
    import com.google.android.gms.location.LocationRequest;
    import com.google.android.gms.location.LocationServices;
    import com.google.android.gms.location.places.Place;
    import com.google.android.gms.location.places.ui.PlaceAutocomplete;
    import com.google.android.gms.maps.CameraUpdateFactory;
    import com.google.android.gms.maps.GoogleMap;
    import com.google.android.gms.maps.OnMapReadyCallback;
    import com.google.android.gms.maps.SupportMapFragment;
    import com.google.android.gms.maps.model.CameraPosition;
    import com.google.android.gms.maps.model.LatLng;

    public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener {
    private GoogleMap mMap;
    private GoogleApiClient mGoogleApiClient;
    private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
    private static String TAG = "MAP LOCATION";
    Context mContext;
    TextView mLocationMarkerText;
    private LatLng mCenterLatLong;


    /**
     * Receiver registered with this activity to get the response from FetchAddressIntentService.
     */
    private AddressResultReceiver mResultReceiver;
    /**
     * The formatted location address.
     */
    protected String mAddressOutput;
    protected String mAreaOutput;
    protected String mCityOutput;
    protected String mStateOutput;
    EditText mLocationAddress;
    TextView mLocationText;
    private static final int REQUEST_CODE_AUTOCOMPLETE = 1;
    Toolbar mToolbar;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        mContext = this;
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);

        mLocationMarkerText = (TextView) findViewById(R.id.locationMarkertext);
        mLocationAddress = (EditText) findViewById(R.id.Address);
        mLocationText = (TextView) findViewById(R.id.Locality);
        mToolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayShowHomeEnabled(true);

        getSupportActionBar().setTitle(getResources().getString(R.string.app_name));


        mLocationText.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                openAutocompleteActivity();

            }


        });
        mapFragment.getMapAsync(this);
        mResultReceiver = new AddressResultReceiver(new Handler());

        if (checkPlayServices()) {
            // If this check succeeds, proceed with normal processing.
            // Otherwise, prompt user to get valid Play Services APK.
            if (!AppUtils.isLocationEnabled(mContext)) {
                // notify user
                AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
                dialog.setMessage("Location not enabled!");
                dialog.setPositiveButton("Open location settings", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                        Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                        startActivity(myIntent);
                    }
                });
                dialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                        // TODO Auto-generated method stub

                    }
                });
                dialog.show();
            }
            buildGoogleApiClient();
        } else {
            Toast.makeText(mContext, "Location not supported in this device", Toast.LENGTH_SHORT).show();
        }

    }


    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @Override
    public void onMapReady(GoogleMap googleMap) {
        Log.d(TAG, "OnMapReady");
        mMap = googleMap;

        mMap.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() {
            @Override
            public void onCameraChange(CameraPosition cameraPosition) {
                Log.d("Camera postion change" + "", cameraPosition + "");
                mCenterLatLong = cameraPosition.target;


                mMap.clear();

                try {

                    Location mLocation = new Location("");
                    mLocation.setLatitude(mCenterLatLong.latitude);
                    mLocation.setLongitude(mCenterLatLong.longitude);

                    startIntentService(mLocation);
                    mLocationMarkerText.setText("Lat : " + mCenterLatLong.latitude + "," + "Long : " + mCenterLatLong.longitude);

                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
//        mMap.setMyLocationEnabled(true);
//        mMap.getUiSettings().setMyLocationButtonEnabled(true);
//
//        // Add a marker in Sydney and move the camera
//        LatLng sydney = new LatLng(-34, 151);
//        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
//        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }

    @Override
    public void onConnected(Bundle bundle) {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
                mGoogleApiClient);
        if (mLastLocation != null) {
            changeMap(mLastLocation);
            Log.d(TAG, "ON connected");

        } else
            try {
                LocationServices.FusedLocationApi.removeLocationUpdates(
                        mGoogleApiClient, this);

            } catch (Exception e) {
                e.printStackTrace();
            }
        try {
            LocationRequest mLocationRequest = new LocationRequest();
            mLocationRequest.setInterval(10000);
            mLocationRequest.setFastestInterval(5000);
            mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
            LocationServices.FusedLocationApi.requestLocationUpdates(
                    mGoogleApiClient, mLocationRequest, this);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    @Override
    public void onConnectionSuspended(int i) {
        Log.i(TAG, "Connection suspended");
        mGoogleApiClient.connect();
    }

    @Override
    public void onLocationChanged(Location location) {
        try {
            if (location != null)
                changeMap(location);
            LocationServices.FusedLocationApi.removeLocationUpdates(
                    mGoogleApiClient, this);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }


    protected synchronized void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

    @Override
    protected void onStart() {
        super.onStart();
        try {
            mGoogleApiClient.connect();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        try {

        } catch (RuntimeException e) {
            e.printStackTrace();
        }
        if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
    }

    private boolean checkPlayServices() {
        int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
        if (resultCode != ConnectionResult.SUCCESS) {
            if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
                GooglePlayServicesUtil.getErrorDialog(resultCode, this,
                        PLAY_SERVICES_RESOLUTION_REQUEST).show();
            } else {
                //finish();
            }
            return false;
        }
        return true;
    }

    private void changeMap(Location location) {

        Log.d(TAG, "Reaching map" + mMap);


        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }

        // check if map is created successfully or not
        if (mMap != null) {
            mMap.getUiSettings().setZoomControlsEnabled(false);
            LatLng latLong;


            latLong = new LatLng(location.getLatitude(), location.getLongitude());

            CameraPosition cameraPosition = new CameraPosition.Builder()
                    .target(latLong).zoom(19f).tilt(70).build();

            mMap.setMyLocationEnabled(true);
            mMap.getUiSettings().setMyLocationButtonEnabled(true);
            mMap.animateCamera(CameraUpdateFactory
                    .newCameraPosition(cameraPosition));

            mLocationMarkerText.setText("Lat : " + location.getLatitude() + "," + "Long : " + location.getLongitude());
            startIntentService(location);


        } else {
            Toast.makeText(getApplicationContext(),
                    "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                    .show();
        }

    }


    /**
     * Receiver for data sent from FetchAddressIntentService.
     */
    class AddressResultReceiver extends ResultReceiver {
        public AddressResultReceiver(Handler handler) {
            super(handler);
        }

        /**
         * Receives data sent from FetchAddressIntentService and updates the UI in MainActivity.
         */
        @Override
        protected void onReceiveResult(int resultCode, Bundle resultData) {

            // Display the address string or an error message sent from the intent service.
            mAddressOutput = resultData.getString(AppUtils.LocationConstants.RESULT_DATA_KEY);

            mAreaOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_AREA);

            mCityOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_CITY);
            mStateOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_STREET);

            displayAddressOutput();

            // Show a toast message if an address was found.
            if (resultCode == AppUtils.LocationConstants.SUCCESS_RESULT) {
                //  showToast(getString(R.string.address_found));


            }


        }

    }

    /**
     * Updates the address in the UI.
     */
    protected void displayAddressOutput() {
        //  mLocationAddressTextView.setText(mAddressOutput);
        try {
            if (mAreaOutput != null)
               // mLocationText.setText(mAreaOutput+ "");

            mLocationAddress.setText(mAddressOutput);
            //mLocationText.setText(mAreaOutput);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Creates an intent, adds location data to it as an extra, and starts the intent service for
     * fetching an address.
     */
    protected void startIntentService(Location mLocation) {
        // Create an intent for passing to the intent service responsible for fetching the address.
        Intent intent = new Intent(this, FetchAddressIntentService.class);

        // Pass the result receiver as an extra to the service.
        intent.putExtra(AppUtils.LocationConstants.RECEIVER, mResultReceiver);

        // Pass the location data as an extra to the service.
        intent.putExtra(AppUtils.LocationConstants.LOCATION_DATA_EXTRA, mLocation);

        // Start the service. If the service isn't already running, it is instantiated and started
        // (creating a process for it if needed); if it is running then it remains running. The
        // service kills itself automatically once all intents are processed.
        startService(intent);
    }


    private void openAutocompleteActivity() {
        try {
            // The autocomplete activity requires Google Play Services to be available. The intent
            // builder checks this and throws an exception if it is not the case.
            Intent intent = new PlaceAutocomplete.IntentBuilder(PlaceAutocomplete.MODE_FULLSCREEN)
                    .build(this);
            startActivityForResult(intent, REQUEST_CODE_AUTOCOMPLETE);
        } catch (GooglePlayServicesRepairableException e) {
            // Indicates that Google Play Services is either not installed or not up to date. Prompt
            // the user to correct the issue.
            GoogleApiAvailability.getInstance().getErrorDialog(this, e.getConnectionStatusCode(),
                    0 /* requestCode */).show();
        } catch (GooglePlayServicesNotAvailableException e) {
            // Indicates that Google Play Services is not available and the problem is not easily
            // resolvable.
            String message = "Google Play Services is not available: " +
                    GoogleApiAvailability.getInstance().getErrorString(e.errorCode);

            Toast.makeText(mContext, message, Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * Called after the autocomplete activity has finished to return its result.
     */
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Check that the result was from the autocomplete widget.
        if (requestCode == REQUEST_CODE_AUTOCOMPLETE) {
            if (resultCode == RESULT_OK) {
                // Get the user's selected place from the Intent.
                Place place = PlaceAutocomplete.getPlace(mContext, data);

                // TODO call location based filter


                LatLng latLong;


                latLong = place.getLatLng();

                //mLocationText.setText(place.getName() + "");

                CameraPosition cameraPosition = new CameraPosition.Builder()
                        .target(latLong).zoom(19f).tilt(70).build();

                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    //    ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    //                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    return;
                }
                mMap.setMyLocationEnabled(true);
                mMap.animateCamera(CameraUpdateFactory
                        .newCameraPosition(cameraPosition));


            }


        } else if (resultCode == PlaceAutocomplete.RESULT_ERROR) {
            Status status = PlaceAutocomplete.getStatus(mContext, data);
        } else if (resultCode == RESULT_CANCELED) {
            // Indicates that the activity closed before a selection was made. For example if
            // the user pressed the back button.
        }
    }


    }

清单文件是

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sample.sishin.maplocation">

    <!--
         The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
         Google Maps Android API v2, but you must specify either coarse or fine
         location permissions for the 'MyLocation' functionality. 
    -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <!--
             The API key for Google Maps-based APIs is defined as a string resource.
             (See the file "res/values/google_maps_api.xml").
             Note that the API key is linked to the encryption key used to sign the APK.
             You need a different API key for each encryption key, including the release key that is used to
             sign the APK for publishing.
             You can define the keys for the debug and release targets in src/debug/ and src/release/. 
        -->


        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="your key here" />

        <activity
            android:name="com.sample.sishin.maplocation.MapsActivity"
            android:label="@string/title_activity_maps">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service
            android:name="com.sample.sishin.maplocation.FetchAddressIntentService"
            android:exported="false" />

    </application>

</manifest>

Answer 2

当LocationClient被删除时，我使用了GoogleApiClient，这是任何想要实现它的人的代码。只需用LocationClient替换GoogleApiClient，就像@Sishin的代码一样。

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Dialog;
import android.content.IntentSender.SendIntentException;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.app.anycabs.R;
import com.app.common.GPSTracker;
import com.app.modle.GData;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnCameraChangeListener;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

public class MainActivity extends AppCompatActivity implements
        LocationListener, GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {
    // A request to connect to Location Services
    private LocationRequest mLocationRequest;
    GoogleMap mGoogleMap;

    public static String ShopLat;
    public static String ShopPlaceId;
    public static String ShopLong;
    // Stores the current instantiation of the location client in this object
    private GoogleApiClient mGoogleApiClient;
    boolean mUpdatesRequested = false;
    private TextView markerText;
    private LatLng center;
    private LinearLayout markerLayout;
    private Geocoder geocoder;
    private List<Address> addresses;
    private TextView Address;
    double latitude;
    double longitude;
    private GPSTracker gps;
    private LatLng curentpoint;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_curent_locations);
        markerText = (TextView) findViewById(R.id.locationMarkertext);
        Address = (TextView) findViewById(R.id.adressText);
        markerLayout = (LinearLayout) findViewById(R.id.locationMarker);
        // Getting Google Play availability status
        int status = GooglePlayServicesUtil
                .isGooglePlayServicesAvailable(getBaseContext());

        if (status != ConnectionResult.SUCCESS) { // Google Play Services are
                                                    // not available

            int requestCode = 10;
            Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this,
                    requestCode);
            dialog.show();

        } else { // Google Play Services are available

            // Getting reference to the SupportMapFragment
            // Create a new global location parameters object
            mLocationRequest = LocationRequest.create();

            /*
             * Set the update interval
             */
            mLocationRequest.setInterval(GData.UPDATE_INTERVAL_IN_MILLISECONDS);

            // Use high accuracy
            mLocationRequest
                    .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

            // Set the interval ceiling to one minute
            mLocationRequest
                    .setFastestInterval(GData.FAST_INTERVAL_CEILING_IN_MILLISECONDS);

            // Note that location updates are off until the user turns them on
            mUpdatesRequested = false;

            /*
             * Create a new location client, using the enclosing class to handle
             * callbacks.
             */
            mGoogleApiClient = new GoogleApiClient.Builder(this)
                    .addApi(LocationServices.API).addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this).build();

            mGoogleApiClient.connect();
        }
    }

    private void stupMap() {
        try {

            mGoogleMap = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.curentlocationmapfragment)).getMap();

            // Enabling MyLocation in Google Map
            mGoogleMap.setMyLocationEnabled(true);
            mGoogleMap.getUiSettings().setZoomControlsEnabled(false);
            mGoogleMap.getUiSettings().setMyLocationButtonEnabled(true);
            mGoogleMap.getUiSettings().setCompassEnabled(true);
            mGoogleMap.getUiSettings().setRotateGesturesEnabled(true);
            mGoogleMap.getUiSettings().setZoomGesturesEnabled(true);

            PendingResult<Status> result = LocationServices.FusedLocationApi
                    .requestLocationUpdates(mGoogleApiClient, mLocationRequest,
                            new LocationListener() {

                                @Override
                                public void onLocationChanged(Location location) {
                                    markerText.setText("Location received: "
                                            + location.toString());

                                }
                            });

            Log.e("Reached", "here");

            result.setResultCallback(new ResultCallback<Status>() {

                @Override
                public void onResult(Status status) {

                    if (status.isSuccess()) {

                        Log.e("Result", "success");

                    } else if (status.hasResolution()) {
                        // Google provides a way to fix the issue
                        try {
                            status.startResolutionForResult(MainActivity.this,
                                    100);
                        } catch (SendIntentException e) {
                            e.printStackTrace();
                        }
                    }
                }
            });
            gps = new GPSTracker(this);

            gps.canGetLocation();

            latitude = gps.getLatitude();
            longitude = gps.getLongitude();
            curentpoint = new LatLng(latitude, longitude);

            CameraPosition cameraPosition = new CameraPosition.Builder()
                    .target(curentpoint).zoom(19f).tilt(70).build();

            mGoogleMap.setMyLocationEnabled(true);
            mGoogleMap.animateCamera(CameraUpdateFactory
                    .newCameraPosition(cameraPosition));
            // Clears all the existing markers
            mGoogleMap.clear();

            mGoogleMap.setOnCameraChangeListener(new OnCameraChangeListener() {

                @Override
                public void onCameraChange(CameraPosition arg0) {
                    // TODO Auto-generated method stub
                    center = mGoogleMap.getCameraPosition().target;

                    markerText.setText(" Set your Location ");
                    mGoogleMap.clear();
                    markerLayout.setVisibility(View.VISIBLE);

                    try {
                        new GetLocationAsync(center.latitude, center.longitude)
                                .execute();

                    } catch (Exception e) {
                    }
                }
            });

            markerLayout.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // TODO Auto-generated method stub

                    try {

                        LatLng latLng1 = new LatLng(center.latitude,
                                center.longitude);

                        Marker m = mGoogleMap.addMarker(new MarkerOptions()
                                .position(latLng1)
                                .title(" Set your Location ")
                                .snippet("")
                                .icon(BitmapDescriptorFactory
                                        .fromResource(R.drawable.pin_last)));
                        m.setDraggable(true);

                        markerLayout.setVisibility(View.GONE);
                    } catch (Exception e) {
                    }

                }
            });

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onLocationChanged(Location location) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onConnectionFailed(ConnectionResult arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onConnected(Bundle arg0) {
        // TODO Auto-generated method stub
        stupMap();

    }

    private class GetLocationAsync extends AsyncTask<String, Void, String> {

        // boolean duplicateResponse;
        double x, y;
        StringBuilder str;

        public GetLocationAsync(double latitude, double longitude) {
            // TODO Auto-generated constructor stub

            x = latitude;
            y = longitude;
        }

        @Override
        protected void onPreExecute() {
            Address.setText(" Getting location ");
        }

        @Override
        protected String doInBackground(String... params) {

            try {
                geocoder = new Geocoder(MainActivity.this, Locale.ENGLISH);
                addresses = geocoder.getFromLocation(x, y, 1);
                str = new StringBuilder();
                if (Geocoder.isPresent()) {
                    Address returnAddress = addresses.get(0);

                    String localityString = returnAddress.getLocality();
                    String city = returnAddress.getCountryName();
                    String region_code = returnAddress.getCountryCode();
                    String zipcode = returnAddress.getPostalCode();

                    str.append(localityString + "");
                    str.append(city + "" + region_code + "");
                    str.append(zipcode + "");

                } else {
                }
            } catch (IOException e) {
                Log.e("tag", e.getMessage());
            }
            return null;

        }

        @Override
        protected void onPostExecute(String result) {
            try {
                Address.setText(addresses.get(0).getAddressLine(0)
                        + addresses.get(0).getAddressLine(1) + " ");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        @Override
        protected void onProgressUpdate(Void... values) {

        }
    }

    @Override
    public void onConnectionSuspended(int arg0) {
        // TODO Auto-generated method stub

    }

}

GPSTracker如下所示：

public class GPSTracker extends Service implements LocationListener {

    private final FragmentActivity mActivity;

    // flag for GPS Status
    boolean isGPSEnabled = false;

    // flag for network status
    boolean isNetworkEnabled = false;

    boolean canGetLocation = false;

    Location location;
    double latitude;
    double longitude;

    // The minimum distance to change updates in metters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10
                                                                    // metters

    // The minimum time beetwen updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute

    // Declaring a Location Manager
    protected LocationManager locationManager;

    public GPSTracker(FragmentActivity activity) {
        this.mActivity = activity;
        getLocation();
    }

    public Location getLocation() {
        try {
            locationManager = (LocationManager) mActivity
                    .getSystemService(LOCATION_SERVICE);

            // getting GPS status
            isGPSEnabled = locationManager
                    .isProviderEnabled(LocationManager.GPS_PROVIDER);

            // getting network status
            isNetworkEnabled = locationManager
                    .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

            if (!isGPSEnabled && !isNetworkEnabled) {
                // no network provider is enabled
            } else {
                this.canGetLocation = true;

                // First get location from Network Provider
                if (isNetworkEnabled) {
                    locationManager.requestLocationUpdates(
                            LocationManager.NETWORK_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

                    if (locationManager != null) {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                        updateGPSCoordinates();
                    }
                }
                // if GPS Enabled get lat/long using GPS Services
                if (isGPSEnabled) {
                    if (location == null) {
                        locationManager.requestLocationUpdates(
                                LocationManager.GPS_PROVIDER,
                                MIN_TIME_BW_UPDATES,
                                MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

                        if (locationManager != null) {
                            location = locationManager
                                    .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                            updateGPSCoordinates();
                        }
                    }
                }
            }
        } catch (Exception e) {
            // e.printStackTrace();
            Log.e("Error : Location",
                    "Impossible to connect to LocationManager", e);
        }

        return location;
    }

    public void updateGPSCoordinates() {
        if (location != null) {
            latitude = location.getLatitude();
            longitude = location.getLongitude();
        }
    }

    /**
     * Stop using GPS listener Calling this function will stop using GPS in your
     * app
     */

    public void stopUsingGPS() {
        if (locationManager != null) {
            locationManager.removeUpdates(GPSTracker.this);
            locationManager = null;
        }
    }

    /**
     * Function to get latitude
     */
    public double getLatitude() {
        if (location != null) {
            latitude = location.getLatitude();
        }

        return latitude;
    }

    /**
     * Function to get longitude
     */
    public double getLongitude() {
        if (location != null) {
            longitude = location.getLongitude();
        }

        return longitude;
    }

    /**
     * Function to check GPS/wifi enabled
     */
    public boolean canGetLocation() {
        return this.canGetLocation;
    }

    /**
     * Function to show settings alert dialog
     */
    public void showSettingsAlert() {

        if (mActivity == null || mActivity.isFinishing()) {
            return;
        }

        mActivity.runOnUiThread(new Runnable() {

            @Override
            public void run() {

                AlertDialog.Builder alertDialog = new AlertDialog.Builder(
                        mActivity);

                // Setting Dialog Title
                alertDialog.setTitle("GPS is settings");

                // Setting Dialog Message
                alertDialog
                        .setMessage("Your GPS is disabled, Enable GPS in settings or continue with approximate location");

                // On pressing Settings button
                alertDialog.setPositiveButton("Settings",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                Intent intent = new Intent(
                                        Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                                mActivity.startActivity(intent);
                            }
                        });

                // on pressing cancel button
                alertDialog.setNegativeButton("Cancel",
                        new DialogInterface.OnClickListener() {
                            public void onClick(final DialogInterface dialog,
                                    int which) {

                                // UserSerch doSerch = new UserSerch();
                                // doSerch.doserchOn();
                                // dialog.cancel();
                            }
                        });

                // Showing Alert Message
                alertDialog.create().show();
            }
        });

    }

    /**
     * Get list of address by latitude and longitude
     * 
     * @return null or List<Address>
     */
    public List<Address> getGeocoderAddress(Context context) {
        if (location != null) {
            Geocoder geocoder = new Geocoder(context, Locale.ENGLISH);
            try {
                List<Address> addresses = geocoder.getFromLocation(latitude,
                        longitude, 1);
                return addresses;
            } catch (IOException e) {
                // e.printStackTrace();
                Log.e("Error : Geocoder", "Impossible to connect to Geocoder",
                        e);
            }
        }

        return null;
    }

    /**
     * Try to get AddressLine
     * 
     * @return null or addressLine
     */
    public String getAddressLine(Context context) {
        List<Address> addresses = getGeocoderAddress(context);
        if (addresses != null && addresses.size() > 0) {
            Address address = addresses.get(0);
            String addressLine = address.getAddressLine(0);

            return addressLine;
        } else {
            return null;
        }
    }

    /**
     * Try to get Locality
     * 
     * @return null or locality
     */
    public String getLocality(Context context) {
        List<Address> addresses = getGeocoderAddress(context);
        if (addresses != null && addresses.size() > 0) {
            Address address = addresses.get(0);
            String locality = address.getLocality();

            return locality;
        } else {
            return null;
        }
    }

    /**
     * Try to get Postal Code
     * 
     * @return null or postalCode
     */
    public String getPostalCode(Context context) {
        List<Address> addresses = getGeocoderAddress(context);
        if (addresses != null && addresses.size() > 0) {
            Address address = addresses.get(0);
            String postalCode = address.getPostalCode();

            return postalCode;
        } else {
            return null;
        }
    }

    /**
     * Try to get CountryName
     * 
     * @return null or postalCode
     */
    public String getCountryName(Context context) {
        List<Address> addresses = getGeocoderAddress(context);
        if (addresses != null && addresses.size() > 0) {
            Address address = addresses.get(0);
            String countryName = address.getCountryName();

            return countryName;
        } else {
            return null;
        }
    }

    @Override
    public void onLocationChanged(Location location) {
    }

    @Override
    public void onProviderDisabled(String provider) {
        showSettingsAlert();
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}

我希望它对任何人都有帮助。

Answer 3

你可以尝试一下这个例子......

Example done by me

activity_main.xml中

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
      android:layout_height="match_parent" >

<fragment
    android:id="@+id/map"
    android:name="com.rajeshvijayakumar.map.demo.ui.CustomMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<include
    android:id="@+id/marker_view_incl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    layout="@layout/marker_view" />

<include
    android:id="@+id/location_display_incl"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_margin="7dp"
    layout="@layout/location_display_view" />

   </RelativeLayout>

marker_view.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

<ImageView
    android:id="@+id/marker_icon_view"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_centerInParent="true"
    android:layout_marginTop="162dp"
    android:contentDescription="@string/app_name"
    android:src="@drawable/ic_launcher" />

</RelativeLayout>

location_display_view.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="@android:color/white" >

<TextView
    android:id="@+id/text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:gravity="center"
    android:text="Set Location"
    android:textColor="@android:color/holo_green_dark"
    android:textSize="12sp" />

<TextView
    android:id="@+id/location_text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/text_view"
    android:layout_centerHorizontal="true"
    android:gravity="center"
    android:text="Set Location"
    android:textColor="@android:color/black"
    android:textSize="14sp" />

MapWrapperLayout.java

package com.rajeshvijayakumar.map.demo.wrapper;

public class MapWrapperLayout extends FrameLayout {

public interface OnDragListener {
    public void onDrag(MotionEvent motionEvent);
}

private OnDragListener mOnDragListener;

public MapWrapperLayout(Context context) {
    super(context);
}

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
    if (mOnDragListener != null) {
        mOnDragListener.onDrag(ev);
    }
    return super.dispatchTouchEvent(ev);
}

public void setOnDragListener(OnDragListener mOnDragListener) {
    this.mOnDragListener = mOnDragListener;
}
}

CustomMapFragment.java

package com.rajeshvijayakumar.map.demo.ui;

public class CustomMapFragment extends MapFragment {

private View mOriginalView;
private MapWrapperLayout mMapWrapperLayout;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    mOriginalView = super.onCreateView(inflater, container, savedInstanceState);

    mMapWrapperLayout = new MapWrapperLayout(getActivity());
    mMapWrapperLayout.addView(mOriginalView);

    return mMapWrapperLayout;
   }

    @Override
     public View getView() {
        return mOriginalView;
     }

      public void setOnDragListener(MapWrapperLayout.OnDragListener onDragListener) {
        mMapWrapperLayout.setOnDragListener(onDragListener);
      }
  }

MainActivity.java

public class MainActivity extends Activity implements OnDragListener {

// Google Map
private GoogleMap googleMap;
private CustomMapFragment mCustomMapFragment;

private View mMarkerParentView;
private ImageView mMarkerImageView;

private int imageParentWidth = -1;
private int imageParentHeight = -1;
private int imageHeight = -1;
private int centerX = -1;
private int centerY = -1;

private TextView mLocationTextView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // InitializeUI
    initializeUI();

}

private void initializeUI() {

    try {
        // Loading map
        initilizeMap();

    } catch (Exception e) {
        e.printStackTrace();
    }
    mLocationTextView = (TextView) findViewById(R.id.location_text_view);
    mMarkerParentView = findViewById(R.id.marker_view_incl);
    mMarkerImageView = (ImageView) findViewById(R.id.marker_icon_view);
}

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    DisplayMetrics displaymetrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);

    imageParentWidth = mMarkerParentView.getWidth();
    imageParentHeight = mMarkerParentView.getHeight();
    imageHeight = mMarkerImageView.getHeight();

    centerX = imageParentWidth / 2;
    centerY = (imageParentHeight / 2) + (imageHeight / 2);
}

private void initilizeMap() {
    if (googleMap == null) {
        mCustomMapFragment = ((CustomMapFragment) getFragmentManager()
                .findFragmentById(R.id.map));
        mCustomMapFragment.setOnDragListener(MainActivity.this);
        googleMap = mCustomMapFragment.getMap();
        // check if map is created successfully or not
        if (googleMap == null) {
            Toast.makeText(getApplicationContext(),
                    "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                    .show();
        }
    }
    // CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng,
    // 10);
    // googleMap.animateCamera(cameraUpdate);
    // locationManager.removeUpdates(this);
}

@Override
protected void onResume() {
    super.onResume();
}

@Override
public void onDrag(MotionEvent motionEvent) {
    if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
        Projection projection = (googleMap != null && googleMap
                .getProjection() != null) ? googleMap.getProjection()
                : null;
        //
        if (projection != null) {
            LatLng centerLatLng = projection.fromScreenLocation(new Point(
                    centerX, centerY));
            updateLocation(centerLatLng);
        }
    }
}

private void updateLocation(LatLng centerLatLng) {
    if (centerLatLng != null) {
        Geocoder geocoder = new Geocoder(MainActivity.this,
                Locale.getDefault());

        List<Address> addresses = new ArrayList<Address>();
        try {
            addresses = geocoder.getFromLocation(centerLatLng.latitude,
                    centerLatLng.longitude, 1);
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (addresses != null && addresses.size() > 0) {

            String addressIndex0 = (addresses.get(0).getAddressLine(0) != null) ? addresses
                    .get(0).getAddressLine(0) : null;
            String addressIndex1 = (addresses.get(0).getAddressLine(1) != null) ? addresses
                    .get(0).getAddressLine(1) : null;
            String addressIndex2 = (addresses.get(0).getAddressLine(2) != null) ? addresses
                    .get(0).getAddressLine(2) : null;
            String addressIndex3 = (addresses.get(0).getAddressLine(3) != null) ? addresses
                    .get(0).getAddressLine(3) : null;

            String completeAddress = addressIndex0 + "," + addressIndex1;

            if (addressIndex2 != null) {
                completeAddress += "," + addressIndex2;
            }
            if (addressIndex3 != null) {
                completeAddress += "," + addressIndex3;
            }
            if (completeAddress != null) {
                mLocationTextView.setText(completeAddress);
            }
        }
    }
}
}

Answer 4

GPSClass来自#Shvet ans。

public class CarSelectActivity extends BaseActivity implements GoogleApiClient.OnConnectionFailedListener, LocationListener, OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks {

    private GoogleApiClient mGoogleApiClient;    
    private static final LatLngBounds BOUNDS_GREATER_SYDNEY = new LatLngBounds(
            new LatLng(-34.041458, 150.790100), new LatLng(-33.682247, 151.383362));
    private GoogleMap mGoogleMap;
    private ImageView mMarkerImageView;
    private GPSTracker gps;

    @Override
    protected void onCreate(@Nullable final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        setContentView(R.layout.activit_carselect);

        final SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        inilizviews();
    }

    private void inilizviews() {
        gps = new GPSTracker(this);
        mMarkerImageView = (ImageView) findViewById(R.id.im_marker);
    }

    @Override
    public void onConnectionFailed(@NonNull final ConnectionResult connectionResult) {
    }
    @Override
    public void onLocationChanged(final Location location) {
    }

    @Override
    public void onMapReady(final GoogleMap googleMap) {
        mGoogleMap = googleMap;
       mGoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        mGoogleMap.getUiSettings().isMyLocationButtonEnabled();
        mGoogleMap.getUiSettings().isZoomControlsEnabled();
        mGoogleMap.getUiSettings().setMyLocationButtonEnabled(true);
    }

    @Override
    public void onConnected(@Nullable final Bundle bundle) {
        mGoogleApiClient.connect();
        setUpDragListners();
    }

    @Override
    public void onConnectionSuspended(int i) {
    }
    private void setUpDragListners() {

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {          
            return;
        }
        gps.canGetLocation();
        LatLng curentpoint = new LatLng(gps.getLatitude(), gps.getLongitude());
        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(curentpoint).zoom(15f).tilt(30).build();
        mGoogleMap.setMyLocationEnabled(true);
        mGoogleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        mGoogleMap.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() {
            @Override
            public void onCameraChange(CameraPosition arg0) {
                // TODO Auto-generated method stub
                LatLng center = mGoogleMap.getCameraPosition().target;
                try {
                    getLocation(center.latitude, center.longitude);
                } catch (final Exception e) {
                    e.printStackTrace();
                }
            }
        });
private void getLocation(double latitude, double longitude) {
 Geocoder geocoder = new Geocoder(CarSelectActivity.this, Locale.ENGLISH);
                addresses = geocoder.getFromLocation(latitude, longitude, 1);

textView_places.setText(addresses.get(0).getAddressLine(0)
                        + addresses.get(0).getAddressLine(1) + " ");
}
    }

Answer 5

Shorter Kotlin方式：用相对布局包装xml：

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">

<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:map="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    map:mapType="normal"
    tools:context=".MapStartedActivity"/>
<ImageView
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:layout_centerInParent="true"
    android:id="@+id/imgLocationPinUp"
    android:src="@drawable/location_pin_up"
    />
</RelativeLayout>


fun mapInit(googleMap: GoogleMap){
    googleMap.apply {
        // just a random location our map will point to when its launched
        val klcc = LatLng(3.1579513, 101.7116233)
        addMarker(MarkerOptions().apply {
            position(klcc)
            title("Marker pointed at klcc")
            draggable(false)
        })
        // setup zoom level
        animateCamera(CameraUpdateFactory.newLatLngZoom(klcc,18f))

        // maps events we need to respond to 
        setOnCameraMoveListener(this@MapStartedActivity)
        setOnCameraIdleListener(this@MapStartedActivity)

    }
}

override fun onCameraMove() {
    mMap.clear()
    // display imageView 
    imgPinUp?.visibility = View.VISIBLE
}
override fun onCameraIdle() {
    // hiding imageView 
    imgPinUp?.visibility = View.GONE
    // customizing map marker with a custom icon 
    // and place it on the current map camera position 
    val markerOptions = MarkerOptions().position(mMap.cameraPosition.target)
            .icon(BitmapDescriptorFactory.fromResource(R.drawable.location_pin))
    mMap.addMarker(markerOptions)

}

如何实现像uber android这样的可拖动地图，用更改位置更新

5 个答案: