Question

美好的一天。我有可怕的情况。我在会话中创建一个位置共享逻辑。我将该会话保存在mysql上的服务器上。当android点击该活动时，我相应地插入用户信息。当android离开活动时我删除了那个列，所以会话被放弃了对方。在一个问题之前一切都很好.Android没有提供从最近刷掉应用程序的回调，meanging应用程序被彻底杀死。我在那里找到了一个工作。我正在使用一旦它达到我想要的活动就服务和启动服务。在服务中我有一个简单的事情叫做onTaskRemoved（），它通过从最近一次刷它来杀死应用程序时立即通知我。所有好到我要打电话的地方到我的服务器，以删除列。调用将不会通过，我将永远不会收到任何响应，但在onDestroy（）一切正常工作。实际上这里是代码

 @Override
public void onTaskRemoved(Intent rootIntent) {
    destroySession();
    super.onTaskRemoved(rootIntent);
}

private void destroySession() {
    Log.d("Fsafasfsafasfas", "destroySession: " + opponentId + " my user id" + sharedHelper.getUserId());
    Call<ResponseBody> locationCall = Retrofit.getInstance().getInkService().requestFriendLocation(sharedHelper.getUserId(), opponentId, "", "", Constants.LOCATION_REQUEST_TYPE_DELETE);
    locationCall.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            if (response == null) {
                destroySession();
                return;
            }
            if (response.body() == null) {
                destroySession();
                return;
            }
            try {
                String responseBody = response.body().string();
                Log.d("Fsafasfsafasfas", "onResponse: " + responseBody);
                JSONObject jsonObject = new JSONObject(responseBody);
                boolean success = jsonObject.optBoolean("success");
                if (success) {
                    stopSelf();
                } else {
                    destroySession();
                }
            } catch (IOException e) {
                stopSelf();
                e.printStackTrace();
            } catch (JSONException e) {
                stopSelf();
                e.printStackTrace();
            }
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            destroySession();
        }
    });
}

电话永远不会通过，我猜是唯一打印的日志，是id的日志，仅此而已。任何人都有线索是怎么回事？我该如何处理这种情况？

Answer 1

/**
 * Created by Parag on 01/05/2017.
 */

public class AppService extends android.app.Service {
    public static final String TAG=AppService.class.getName();
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Bundle bundle=intent.getExtras();
        if(bundle!=null){
            final String logout=bundle.getString("logout");
            final String driverLoginId=bundle.getString("driverLoginId");
            if(logout!=null&&driverLoginId!=null){
                Toast.makeText(this, "logging out", Toast.LENGTH_SHORT).show();
                Log.e(TAG,"Logging out");
                Log.e(TAG,"Inside driverLogout "+driverLoginId);
                Call<LogoutResponse> call = RestHandler.getApiService().driverLogout(driverLoginId);
                call.enqueue(new Callback<LogoutResponse>() {
                    @Override
                    public void onResponse(Call<LogoutResponse> call, Response<LogoutResponse> response) {
                        //close the service on receiving response from API
                        Log.e("Response : ",response.body().getStatus()+"");
                        AppService.this.stopSelf();
                    }
                    @Override
                    public void onFailure(Call<LogoutResponse> call, Throwable t) {
                        //close the service on receiving response from API
                        AppService.this.stopSelf();
                    }
                });

            }else{
                //Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
                Log.e(TAG,"DriverLoginId : "+driverLoginId);
                Log.e(TAG,"Logout : "+logout);
            }
        }else{
            //Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
            Log.e(TAG,"Service Start");
        }
        return super.onStartCommand(intent,flags,startId);
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onTaskRemoved(Intent rootIntent) {

        Log.e(TAG,"Service Stop");
        UserLocalStore userLocalStore=new UserLocalStore(AppService.this);
        Log.e("USER DATA :",userLocalStore.fetchUserData().toString());
        Intent restartServiceTask = new Intent(getApplicationContext(),this.getClass());
        restartServiceTask.setPackage(getPackageName());
        restartServiceTask.putExtra("logout","true");
        restartServiceTask.putExtra("driverLoginId",userLocalStore.fetchUserData().getUserId());
        PendingIntent restartPendingIntent =PendingIntent.getService(getApplicationContext(), 1,restartServiceTask, PendingIntent.FLAG_ONE_SHOT);
        AlarmManager myAlarmService = (AlarmManager) getApplicationContext().getSystemService(Context.ALARM_SERVICE);
        myAlarmService.set(
                AlarmManager.ELAPSED_REALTIME,
                SystemClock.elapsedRealtime() + 1000,
                restartPendingIntent);
        super.onTaskRemoved(rootIntent);
    }


}

我也遇到了无法通过onTaskRemoved方法进行任何API调用的相同问题。所以，我也研究了很多，但没有找到解决方案。所以，我终于想到了重新启动Web服务，并在intent中放置了一些额外内容。通过这种方式，您可以区分服务何时重新启动以执行API调用。

Answer 2

我通过取消http请求的严格模式解决了这一问题。因此可以从主线程完成http请求。

 StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
 StrictMode.setThreadPolicy(policy);

在正常情况下建议这样做，但是当应用崩溃或关闭时，我认为可以发送一个http请求。

Android onTaskRemoved（）调用webservice

2 个答案: