Question

即使关闭后，我也希望跟踪与strava非常相似的用户位置。

我尝试过AlarmManager，但每隔一分钟就没有给我执行

Answer 1

如果设备进入睡眠模式，仅使用服务作为BiGGZ解释将无法工作。该服务不会被杀死，但您的应用程序将不会获得任何CPU。因此，您必须获取部分Wakelock以防止设备进入睡眠模式。

如果您需要较少的位置更新，您可以使用AlarmManager并设置重复警报，触发位置更新。警报应该触发BroadcastReceiver，因为在设备再次进入休眠状态之前无法保证服务成功启动。见这里：https://developer.android.com/reference/android/app/AlarmManager.html

Answer 2

使用服务：

public class UpdateLocationService extends Service  implements GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener, LocationListener {

private final static int UPDATE_INTERVAL = 300000;//whatever you want
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
public UpdateLocationService() {
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    return START_STICKY;
}


@Override
public void onCreate() {
    super.onCreate();
    buildGoogleApiClient();
}

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

}

@Override
public void onConnected(@Nullable Bundle bundle) {

    mLocationRequest = LocationRequest.create();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(UPDATE_INTERVAL);

    try{
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, UpdateLocationService.this);

        Toast.makeText(UpdateLocationService.this, "onConnected", Toast.LENGTH_SHORT).show();
    }catch(SecurityException e){

    }
}


@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onLocationChanged(Location location) {
    Toast.makeText(UpdateLocationService.this, "onLocationChanged", Toast.LENGTH_SHORT).show();

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
    Toast.makeText(UpdateLocationService.this, "onConnectionFailed", Toast.LENGTH_SHORT).show();
}

@Override
public IBinder onBind(Intent intent) {
    // TODO: Return the communication channel to the service.
    throw new UnsupportedOperationException("Not yet implemented");
}

@Override
public void onDestroy() {
    super.onDestroy();
    LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, UpdateLocationService.this);

}

@Override
public void onTaskRemoved(Intent rootIntent) {
    super.onTaskRemoved(rootIntent);
    LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, UpdateLocationService.this);
}
}

即使关闭应用程序（不在后台运行）/ ScreenLocked，GPS位置跟踪

2 个答案: