我想，当GPS被禁用，但是当我启用或禁用位置监听器不响应弹出一个窗口消息。我不明白我在做什么错。任何人都可以给我一个手呢？提前致谢！
这是我的代码，我现在用LocationListener的：
public class MapsActivityy extends AppCompatActivity {
private LocationManager locationManager;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
//locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
// Initialize location manager.
locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
// Check if user has granted permissions.
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// We do not have permissions.
return;
}
// Check if we did find a location provider.
if (locationManager == null) {
// No gps provider was found. Inform user.
return;
}
// Initialize location manager and register location listener.
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
2000,
10, locationListenerGPS);
if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
openGpsWindow();
}else{
updateLocationUI();
}
}
//Location listener that listens for location state changes.
LocationListener locationListenerGPS = new LocationListener() {
@Override
public void onLocationChanged(android.location.Location location) {
// Called when the location has changed.
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// Called when the provider status changes.
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
// Called when the provider is disabled by the user.
openGpsWindow();
}
};
//Pops up a window in order to open GPS
public void openGpsWindow() {
Intent intent = new Intent(this, EnableGpsWindow.class);
startActivity(intent);
}
}
我想，当GPS被禁用，但是当我启用或禁用位置监听器不响应弹出一个窗口消息。我不明白我在做什么错。任何人都可以给我一个手呢？提前致谢！
使用广播接收器来获得支持GPS或禁用事件，然后广播利用内部广播接收器应用程序内部的事件。
这是你的广播接收器将监听GPS事件。
public class LocationStateChangeBroadcastReceiver extends BroadcastReceiver
{
public static final String GPS_CHANGE_ACTION = "com.android.broadcast_listeners.LocationChangeReceiver";
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() != null && intent.getAction().equals(context.getString(R.string.location_change_receiver))) {
if (!isGpsEnabled(context)) {
sendInternalBroadcast(context, "Gps Disabled");
}
}
}
private void sendInternalBroadcast(Context context, String status) {
try {
Intent intent = new Intent();
intent.putExtra("Gps_state", status);
intent.setAction(GPS_CHANGE_ACTION);
context.sendBroadcast(intent);
} catch (Exception ex) {
ex.printStackTrace();
}
}
public static boolean isGpsEnabled(Context context) {
LocationManager manager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
return manager.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
}
创建内部广播接收机类接收事件。
class InternalLocationChangeReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// this method will be called on gps disabled
// call openGpsWindow here
}
}
现在，在您的活动复制此代码以注册广播接收机。
public class MainActivity extends AppCompatActivity {
InternalLocationChangeReceiver internalLocationChangeReceiver = new
InternalLocationChangeReceiver();
LocationStateChangeBroadcastReceiver locationStateChangeBroadcastReceiver = new LocationStateChangeBroadcastReceiver();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
registerReceiver(locationStateChangeBroadcastReceiver, new IntentFilter("android.location.PROVIDERS_CHANGED"));
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(LocationStateChangeBroadcastReceiver.GPS_CHANGE_ACTION);
registerReceiver(internalLocationChangeReceiver, intentFilter);
} catch (Exception ex) {
ex.printStackTrace();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(locationStateChangeBroadcastReceiver);
unregisterReceiver(internalLocationChangeReceiver);
}
}
var locationRequest = LocationRequest()
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
locationRequest.setInterval(5000)
locationRequest.setFastestInterval(1000)
locationRequest.setSmallestDisplacement(2f)
// Create LocationSettingsRequest object using location request
val builder = LocationSettingsRequest.Builder()
builder.addLocationRequest(locationRequest)
val locationSettingsRequest = builder.build()
// Check whether location settings are satisfied
// https://developers.google.com/android/reference/com/google/android/gms/location/SettingsClient
val settingsClient = LocationServices.getSettingsClient(this)
settingsClient.checkLocationSettings(locationSettingsRequest)
.addOnFailureListener {
AppUtils.showToast(this,getString(R.string.enable_high_accuracy_mode),Toast.LENGTH_LONG).hashCode()
val callGPSSettingIntent = Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS)
[email protected](callGPSSettingIntent,1)
}.addOnSuccessListener { }