Question

我正试图在Android服务中获取手机的当前GPS位置。我试着这样做：

Getting Repeated Current Location inside a Service in android?

我的服务如下：

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

private GoogleApiClient mGoogleApiClient;
LocationRequest mLocationRequest;
private Feedback feedback;

@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    mGoogleApiClient = new GoogleApiClient.Builder(getApplicationContext())
    .addConnectionCallbacks(this)
    .addOnConnectionFailedListener(this)
    .addApi(LocationServices.API)
    .build();
    mGoogleApiClient.connect();
    feedback = new Feedback();

    if (isNetworkAvailable()) {
        new MeasuringTask().execute();
    }
    return Service.START_NOT_STICKY;
}

private boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetworkInfo = connectivityManager
            .getActiveNetworkInfo();
    return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}

@Override
public void onConnectionFailed(ConnectionResult arg0) {

}

@Override
public void onConnected(Bundle arg0) {
    mLocationRequest = LocationRequest.create();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(2000); 
    ...
}

@Override
public void onConnectionSuspended(int arg0) {

}

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

@Override
public void onLocationChanged(Location arg0) {
    // TODO Auto-generated method stub

}

private class MeasuringTask extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(String... urls) {
      //network access
    }


}

每次手机启动时，我都会通过广播接收器启动服务。当我执行应用程序时，我得到一个java.lang.NoClassDefFoundError：packet.MeasurementService

如果我尝试更改此部分：

mGoogleApiClient = new GoogleApiClient.Builder(getApplicationContext())
    .addConnectionCallbacks(this)
    .addOnConnectionFailedListener(this)
    .addApi(LocationServices.API)
    .build();

对此：

mGoogleApiClient = new GoogleApiClient.Builder(getApplicationContext())
    .addConnectionCallbacks(MeasurmentService.class)
    .addOnConnectionFailedListener(MeasurmentService.class)
    .addApi(LocationServices.API)
    .build();

像其他帖子中推荐的那样，我得到：

GoogleApiClient.Builder类型中的addConnectionCallbacks（GoogleApiClient.ConnectionCallbacks）方法不适用于参数（Class）

想法？非常感谢！

Answer 1

确保您的服务 LocationListener 来自 com.google.android.gms.location 。

将代码移至onCreate函数。

    @Override
    public void onCreate() { 
        mGoogleApiClient = new GoogleApiClient.Builder(getApplicationContext())
                        .addConnectionCallbacks(this)
                        .addOnConnectionFailedListener(this)
                        .addApi(LocationServices.API)
                        .build();

                mGoogleApiClient.connect();
}

我在github上有一个示例应用程序，请点击here。

Answer 2

我终于明白了，这是一个构建错误，我无法解决。

我的解决方案：

我将项目从Eclipse迁移到Android Studio。

在android中获取服务中的当前位置

2 个答案: