如何在Android中使用谷歌地图V2使用MapView?

时间:2013-05-14 06:22:54

标签: android google-maps

我想在我的活动中显示一张地图。

在谷歌地图V1中我们使用 -

 <com.google.android.maps.MapView
        android:id="@+id/mapview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:apiKey="@string/api_map_key"
        android:clickable="true"
        android:enabled="true" />

并使用MapActivity类扩展活动。

在Versing 2中,它使用Fragment而不是mapview,并且必须通过FragmentActivity而不是普通的Activity来扩展活动。 前 -

<fragment
            android:id="@+id/map"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            class="com.google.android.gms.maps.SupportMapFragment" />

现在我可以使用相同的方式使用版本2创建mapview而不是Fragment。()

任何人都可以使用V2使用MapView吗?

4 个答案:

答案 0 :(得分:144)

是的,你可以在v2中使用MapView ... 有关详细信息,您可以从此处获得帮助

https://gist.github.com/joshdholtz/4522551


SomeFragment.java

public class SomeFragment extends Fragment implements OnMapReadyCallback{

    MapView mapView;
    GoogleMap map;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.some_layout, container, false);

        // Gets the MapView from the XML layout and creates it
        mapView = (MapView) v.findViewById(R.id.mapview);
        mapView.onCreate(savedInstanceState);


        mapView.getMapAsync(this);


        return v;
    }

   @Override
   public void onMapReady(GoogleMap googleMap) {
       map = googleMap;
       map.getUiSettings().setMyLocationButtonEnabled(false);
       map.setMyLocationEnabled(true);
       /*
       //in old Api Needs to call MapsInitializer before doing any CameraUpdateFactory call
        try {
            MapsInitializer.initialize(this.getActivity());
        } catch (GooglePlayServicesNotAvailableException e) {
            e.printStackTrace();
        } 
       */

        // Updates the location and zoom of the MapView
        /*CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
        map.animateCamera(cameraUpdate);*/
        map.moveCamera(CameraUpdateFactory.newLatLng(43.1, -87.9));

    }

    @Override
    public void onResume() {
        mapView.onResume();
        super.onResume();
    }


    @Override
    public void onPause() {
        super.onPause();
        mapView.onPause();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        mapView.onDestroy();
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        mapView.onLowMemory();
    }

}

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>

    <permission
        android:name="com.example.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
    <uses-permission android:name="com.example.permission.MAPS_RECEIVE"/>

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="your_key"/>

        <activity
            android:name=".HomeActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

some_layout.xml

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

    <com.google.android.gms.maps.MapView android:id="@+id/mapview"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" />

</LinearLayout>

答案 1 :(得分:16)

来自herehere的更完整的示例。

或者您可以查看我的布局示例。 p.s不需要在地图视图中放置API密钥。

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <com.google.android.gms.maps.MapView
            android:id="@+id/map_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="2"
            />

    <ListView android:id="@+id/nearby_lv"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:background="@color/white"
              android:layout_weight="1"
            />

</LinearLayout>

答案 2 :(得分:-1)

我使用Kotlin和AndroidX为Google Maps v2 Android创建了虚拟样本

您可以在这里找到完整的项目:github-link

MainActivity.kt

class MainActivity : AppCompatActivity() {

val position = LatLng(-33.920455, 18.466941)

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    with(mapView) {
        // Initialise the MapView
        onCreate(null)
        // Set the map ready callback to receive the GoogleMap object
        getMapAsync{
            MapsInitializer.initialize(applicationContext)
            setMapLocation(it)
        }
    }
}

private fun setMapLocation(map : GoogleMap) {
    with(map) {
        moveCamera(CameraUpdateFactory.newLatLngZoom(position, 13f))
        addMarker(MarkerOptions().position(position))
        mapType = GoogleMap.MAP_TYPE_NORMAL
        setOnMapClickListener {
            Toast.makeText(this@MainActivity, "Clicked on map", Toast.LENGTH_SHORT).show()
        }
    }
}

override fun onResume() {
    super.onResume()
    mapView.onResume()
}

override fun onPause() {
    super.onPause()
    mapView.onPause()
}

override fun onDestroy() {
    super.onDestroy()
    mapView.onDestroy()
}

override fun onLowMemory() {
    super.onLowMemory()
    mapView.onLowMemory()
 }
}

AndroidManifest.xml

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

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:ignore="GoogleAppIndexingWarning">
    <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="API_KEY_HERE" />
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>

            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
</application>

</manifest>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

<com.google.android.gms.maps.MapView
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:id="@+id/mapView"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

答案 3 :(得分:-8)

我有一个非常简单的方法来使工作100%

步骤1:创建一个基本活动并删除所有额外的东西,如fab和snakbar实现,以保持其清洁。

步骤1.5:将这些添加到xml:

<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

第2步:在oncreate之上创建一个私有变量:

private GoogleMap googleMap;

第3步: 在你的oncreate中添加:

if (googleMap == null) {
        googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.mapNB)).getMap();
    }

    googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);



        LatLng coordinate = new LatLng(21.182782, 72.830115);
        CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(coordinate, 11);
        googleMap.moveCamera(CameraUpdateFactory.newLatLng(coordinate));
        googleMap.animateCamera(yourLocation);



    googleMap.setMyLocationEnabled( true );
    googleMap.getUiSettings().setZoomControlsEnabled( true );



    googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {


            somefunction();

            return false;
        }
    });

不要忘记添加地图api密钥。