以下是我如何宣布我的MapsActivity
的清单<activity android:name=".MapsActivity"/>
它仍显示错误验证Android xml文件内的资源引用Android 并且活动崩溃。这是我的MapsActivity
package com.todaysfuture.autometer;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.IntentSender;
import android.graphics.Color;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
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.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
public class MapsActivity extends Fragment implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
public static final String TAG = MapsActivity.class.getSimpleName();
/*
* Define a request code to send to Google Play services
* This code is returned in Activity.onActivityResult
*/
private final static int CONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;
private GoogleMap mMap; // Might be null if Google Play services APK is not available.
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private TextView tvStartRide;
private TextView tvStopRide;
private Location startingLocation;
private Location endingLocation;
private String origin = null ;
private String destination = null ;
private Location location1 ;
private Location location2 ;
private LatLng loc1 ;
private LatLng loc2 ;
private float distance = 0 ;
private float fare = 0 ;
private double startLatitude ;
private double startLongitude ;
private double endLatitude ;
private double endLongitude ;
private float[] results ;
public MapsActivity(){
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.activity_maps, container, false);
setUpMapIfNeeded();
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
// Create the LocationRequest object
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(10 * 1000) // 10 seconds, in milliseconds
.setFastestInterval(1 * 1000); // 1 second, in milliseconds
tvStartRide = (TextView) view.findViewById(R.id.startRideText);
tvStopRide = (TextView) view.findViewById(R.id.stopRideText);
tvStopRide.setVisibility(View.INVISIBLE);
tvStartRide.setOnClickListener(startRideOnClickListener);
tvStopRide.setOnClickListener(stopRideOnClickListener);
return view;
}
View.OnClickListener startRideOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
tvStartRide.setVisibility(View.INVISIBLE);
tvStopRide.setVisibility(View.VISIBLE);
startingLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
location1 = startingLocation ;
startLatitude = location1.getLatitude();
startLongitude = location1.getLongitude();
loc1 = new LatLng(startLatitude, startLongitude) ;
try {
origin = retrieveAddress(startingLocation) ;
Toast.makeText(getContext(), "Ride starting from: " + origin, Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
}
}
};
View.OnClickListener stopRideOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
endingLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
try {
destination = retrieveAddress(endingLocation) ;
Toast.makeText(getContext(), "Ride ended at: " + destination, Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
}
fare = calculateFare(distance) ;
}
};
public String retrieveAddress(Location location) throws IOException {
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(getActivity(), Locale.getDefault());
double latitude = location.getLatitude();
double longitude = location.getLongitude();
addresses = geocoder.getFromLocation(latitude, longitude, 1); // Here 1 represent max location result to returned, by documents it recommended 1 to 5
String address = addresses.get(0).getAddressLine(0); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
/*String city = addresses.get(0).getLocality();
String state = addresses.get(0).getAdminArea();
String country = addresses.get(0).getCountryName();
String postalCode = addresses.get(0).getPostalCode(); */
String knownName = addresses.get(0).getFeatureName(); // Only if available else return NULL
if (address != null)
return address;
else if (knownName != null)
return knownName;
else
return null;
}
public void drawPolyline(LatLng location1, LatLng location2){
Polyline line = mMap.addPolyline(new PolylineOptions()
.add(location1, location2)
.width(5)
.color(Color.RED));
}
/*@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
setUpMapIfNeeded();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
// Create the LocationRequest object
mLocationRequest = LocationRequest.create()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(10 * 1000) // 10 seconds, in milliseconds
.setFastestInterval(1 * 1000); // 1 second, in milliseconds
} */
@Override
public void onResume() {
super.onResume();
setUpMapIfNeeded();
mGoogleApiClient.connect();
}
@Override
public void onPause() {
super.onPause();
if (mGoogleApiClient.isConnected()) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
mGoogleApiClient.disconnect();
}
}
/**
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
* installed) and the map has not already been instantiated.. This will ensure that we only ever
* call {@link #setUpMap()} once when {@link #mMap} is not null.
* <p/>
* If it isn't installed {@link SupportMapFragment} (and
* {@link com.google.android.gms.maps.MapView MapView}) will show a prompt for the user to
* install/update the Google Play services APK on their device.
* <p/>
* A user can return to this FragmentActivity after following the prompt and correctly
* installing/updating/enabling the Google Play services. Since the FragmentActivity may not
* have been completely destroyed during this process (it is likely that it would only be
* stopped or paused), {@link #onCreate(Bundle)} may not be called again so we should call this
* method in {@link #onResume()} to guarantee that it will be called.
*/
private void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
//mMap = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
mMap = ((SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}
/**
* This is where we can add markers or lines, add listeners or move the camera. In this case, we
* just add a marker near Africa.
* <p/>
* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap() {
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
}
private void handleNewLocation(Location location) {
Log.d(TAG, location.toString());
double currentLatitude = location.getLatitude();
double currentLongitude = location.getLongitude();
LatLng latLng = new LatLng(currentLatitude, currentLongitude);
//mMap.addMarker(new MarkerOptions().position(new LatLng(currentLatitude, currentLongitude)).title("Current Location"));
MarkerOptions options = new MarkerOptions()
.position(latLng)
.title("I am here!");
mMap.addMarker(options);
//mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 14.0f));
if (location2 == null) {
location2 = location ;
loc2 = latLng ;
endLatitude = loc2.latitude ;
endLongitude = loc2.longitude ;
//drawPolyline(loc1, loc2);
//android.location.Location.distanceBetween(startLatitude, startLongitude, endLatitude, endLongitude, results);
//if ( results != null )
//distance += results[0] ;
Toast.makeText(getActivity(), "Distance: " + distance, Toast.LENGTH_SHORT).show();
}
else {
loc1 = loc2 ;
loc2 = latLng ;
startLatitude = loc1.latitude ;
startLongitude = loc1.longitude ;
endLatitude = loc2.latitude ;
endLongitude = loc2.longitude ;
drawPolyline(loc1, loc2);
android.location.Location.distanceBetween(startLatitude, startLongitude, endLatitude, endLongitude, results);
distance += results[0] ;
Toast.makeText(getActivity(), "Distance: " + distance, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onConnected(Bundle bundle) {
Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (location == null) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
} else {
handleNewLocation(location);
}
}
@Override
public void onConnectionSuspended(int i) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Oops!");
builder.setMessage("An error occurred.");
AlertDialog dialog = builder.create();
dialog.show();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
/*
* Google Play services can resolve some errors it detects.
* If the error has a resolution, try sending an Intent to
* start a Google Play services activity that can resolve
* error.
*/
if (connectionResult.hasResolution()) {
try {
// Start an Activity that tries to resolve the error
connectionResult.startResolutionForResult(getActivity(), CONNECTION_FAILURE_RESOLUTION_REQUEST);
/*
* Thrown if Google Play services canceled the original
* PendingIntent
*/
} catch (IntentSender.SendIntentException e) {
// Log the error
e.printStackTrace();
}
} else {
/*
* If no resolution is available, display a dialog to the
* user with the error.
*/
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Oops!");
builder.setMessage("An error occurred.");
AlertDialog dialog = builder.create();
dialog.show();
Log.i(TAG, "Location services connection failed with code " + connectionResult.getErrorCode());
}
}
@Override
public void onLocationChanged(Location location) {
handleNewLocation(location);
}
public float calculateFare(float distance) {
float distanceInkm = distance/1000 ;
float firstTwokm = 2 ;
float restOfDistance = distanceInkm - firstTwokm ;
if (distanceInkm >= firstTwokm)
{
fare = 25 ;
while (restOfDistance>=0) {
fare += 0.8 ;
restOfDistance -= 0.1 ;
}
return fare ;
}
else {
while (distanceInkm>=0) {
fare += 1.25 ;
distanceInkm -= 0.1 ;
}
return fare ;
}
}
}
可能是什么解决方案？它正在扩展一个片段，因此它仍然应该是一个活动。当我将光标悬停在清单中活动的声明时，它表示＆＃39; com.todaysfuture.autometer.MapsActivity＆＃39;不能分配给＆＃39; android.app.Activity＆＃39;