我一直在使用Android M模型已经有一段时间了，但是最近我在移动设置中手动撤销了对位置和存储的权限，以查看该应用是否会在运行时再次询问用户的权限。从那以后，它一直在崩溃。请看一下我的代码 -
public class MapsActivity extends FragmentActivity implements com.google.android.gms.location.LocationListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
String[] perms={"android.permission.ACCESS_FINE_LOCATION","android.permission.WRITE_EXTERNAL_STORAGE"};
int permsRequestCode = 200;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGeofences = new ArrayList<Geofence>();
mGeofenceCoordinates = new ArrayList<LatLng>();
// double string0=prefenceSettings.getString("LatLng0", "34");
setContentView(R.layout.activity_maps);
showHelpForFirstLaunch();
SupportMapFragment supportMapFragment =
(SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.googleMap);
LocationManager locationManager = (LocationManager) getSystemService(Service.LOCATION_SERVICE);
// getting GPS status
boolean isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(!isGPSEnabled)
{
Utils.displayPromptForEnablingGPS(this);
}
Log.i("My activity", "gps is" + isGPSEnabled);
// getting network status
boolean isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Log.i("My activity", "network is" + isNetworkEnabled);
Criteria crta = new Criteria();
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.GINGERBREAD) {
crta.setAccuracy(Criteria.ACCURACY_FINE);
} else {
crta.setAccuracy(Criteria.ACCURACY_MEDIUM);
}
/**
* we have used .setAccuracy as fine for higher SDks than gingerbread .Gingerbread is used as a reference because in apks lower
* than gingerbread there is very poor geo-fencing, with gingerbread google made it a lot easier for location services to be used for devleopers.
* it had improved set of tools for Location Services, which included geofencing and substantially improved location discovery.
*/
crta.setPowerRequirement(Criteria.POWER_LOW);
String provider = locationManager.getBestProvider(crta, true);
/**
* It request Location updates after every 5 sec or if the user traveled 10m
*/
Log.i("My activity", "manager is " + locationManager);
Log.i("My activity", "provider is " + provider);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(perms, permsRequestCode);
// 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 Activity#requestPermissions for more details.
return;
}
}
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks((GoogleApiClient.ConnectionCallbacks) this)
.addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
Log.i("Api is", "" + mGoogleApiClient);
}
mLocationRequest = new LocationRequest();
// We want a location update every 10 seconds.
mLocationRequest.setInterval(10000);
// We want the location to be as accurate as possible.
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){
switch(permsRequestCode){
case 200:
boolean gpsAccepted = grantResults[0]==PackageManager.PERMISSION_GRANTED;
Toast.makeText(this,"Thanks for the permission",Toast.LENGTH_SHORT).show();
boolean memoryAccepted = grantResults[1]==PackageManager.PERMISSION_GRANTED;
break;
}
}
@Override
public void onLocationChanged(Location location) {
latitude=location.getLatitude();
longitude=location.getLongitude();
CameraPosition INIT =
new CameraPosition.Builder()
.target(new LatLng(latitude, longitude))
.zoom(17.5F)
.bearing(300F) // orientation
.tilt(50F) // viewing angle
.build();
// use GooggleMap mMap to move camera into position
googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(INIT));
}
@Override
protected void onStart() {
super.onStart();
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
super.onStop();
mGoogleApiClient.disconnect();
}
public void Add(View view) {
if (request < 3) {
String[] arguments = new String[]{String.valueOf(request)};
ContentValues values = new ContentValues();
values.put("latitude", latitude);
values.put("true","1");
values.put("longitude", longitude);
db.update("Coordinates", values, "id=?", arguments);
mGeofenceCoordinates.add(new LatLng(latitude, longitude));
Log.i("The id is", "" + valueindex);
mGeofences.add(new Geofence.Builder()
// The coordinates of the center of the geofence and the radius in meters.
.setRequestId("" + valueindex)
.setCircularRegion(latitude, longitude, 100)
.setExpirationDuration(Geofence.NEVER_EXPIRE)
// Required when we use the transition type of GEOFENCE_TRANSITION_DWELL
.setLoiteringDelay(50000)
.setTransitionTypes(
Geofence.GEOFENCE_TRANSITION_ENTER
| Geofence.GEOFENCE_TRANSITION_DWELL
| Geofence.GEOFENCE_TRANSITION_EXIT).build());
mGeofenceStore = new GeofenceStore(this, mGeofences);
valueindex++;
request++;
googleMap.addMarker(new MarkerOptions().snippet("Radius:100m").draggable(false).title(valueindex + "").position(new LatLng(latitude, longitude))).showInfoWindow();
} else {
Toast.makeText(this, "Maximum limit exceeded", Toast.LENGTH_LONG).show();
}
}
@Override
public void onConnected(Bundle bundle) {
Location mlastlocation;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(perms, permsRequestCode);
return;
}
}
mlastlocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
startLocationUpdates();
if (mlastlocation != null) {
Log.i("the last location:", "" + mlastlocation);
// Toast.makeText(this, "Get last location first asshole!", Toast.LENGTH_LONG).show();
}
}
protected void startLocationUpdates() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(perms, permsRequestCode);
return;
}
LocationRequest mLocationRequest = new LocationRequest();
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
}
}
请帮我找几天了！我的清单文件很好，包括所有用户权限
答案 0 :(得分：0)
你的错误就在这一行：
String[] perms={"android.permission.ACCESS_FINE_LOCATION","android.permission.WRITE_EXTERNAL_STORAGE"};
将其更改为
String[] perms={"android.permission.ACCESS_FINE_LOCATION","android.permission.ACCESS_COARSE_LOCATION"};