首先,这不是网站上任何其他问题的重复。我已经使用Service
和Google API查看了位置更新。
我已经尝试了两种方法,但是在服务的情况下,它无效。但第一个链接的代码工作得很好,并正确地提供位置更新。但我认为当应用程序处于后台时,它无法获得更新。
我想在服务中使用该代码,即使我的应用程序处于后台,也可以不断获取位置更新。
但无法弄清楚如何合并这两个代码。如果你问的是我尝试了什么?我只是复制服务类中的常用方法。但它给了我太多错误:(
如果有替代品,请建议我。我是android的新手。
提前致谢!
答案 0 :(得分:0)
尝试:
Service.java
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.Toast;
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.common.ConnectionResult;
import com.google.android.gms.location.LocationServices;
import java.io.IOException;
import java.io.OutputStreamWriter;
public class GPSService extends Service implements GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener,LocationListener {
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
mGoogleApiClient.connect();
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
mGoogleApiClient.disconnect();
super.onDestroy();
}
@Override
public void onConnected(Bundle bundle) {
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(1000); // Update location every second
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
@Override
public void onConnectionSuspended(int i) {
Toast.makeText(this,"GoogleApiClient connection has been suspend",Toast.LENGTH_LONG).show();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Toast.makeText(this,"GoogleApiClient connection has failed",Toast.LENGTH_LONG).show();
}
和MainActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent i = new Intent(this,GPSService.class);
startService(i);
}