Android：意向服务

Question

我试图通过在 intentservice class 中实现 Fused location provider api 来获取位置，同时我在同一个服务中启动一个 newtimertask。

所以当调用 intentservice 时，timertask 启动并且 googleapi客户端连接以获取位置。

我希望如果位置不可用，我的定时器任务会在接下来的 60 秒内断开 googleapi 客户端。

但这不起作用...如果它没有获取位置...意图服务继续运行或 fusedlocatinprovider 继续寻找 location.so 我必须停止这些吗？

package com.example.rj.intentlocationapi;

import android.app.AlarmManager;
import android.app.IntentService;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.SystemClock;
import android.util.Log;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
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.location.LocationServices;


public class BackgrndService extends IntentService implements        LocationListener,
     GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener {

LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mCurrentLocation;
LocationManager mlocationmanger;
int bool = 0;
CountDownTimer cnt;


public BackgrndService() {
    super("BackgrndService");
}


protected void createLocationRequest() {
    mLocationRequest = new LocationRequest();
     mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}

private boolean isGooglePlayServicesAvailable() {
    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (ConnectionResult.SUCCESS == status) {
        return true;
    } else {
        return false;
    }
}

@Override
protected void onHandleIntent(Intent intent) {
    if (!isGooglePlayServicesAvailable()) {
        stopLocationService();
    }
    mlocationmanger = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);


    createLocationRequest();
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();
    cnt = new CountDownTimer(60000, 1000) {

        public void onTick(long millisUntilFinished) {

        }

        public void onFinish() {
            Log.w("haha", "going to finish it");
            stopLocationService();


        }
    }.start();
    mGoogleApiClient.registerConnectionCallbacks(this);
    mGoogleApiClient.connect();
    Log.w("haha", "blocked to finish it");


}

public void onConnected(Bundle bundle) {
    Log.w("hello", "onConnected - isConnected ...............: " + mGoogleApiClient.isConnected());
    startLocationUpdates();
}

protected void startLocationUpdates() {
    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}

@Override
public void onConnectionSuspended(int i) {
    Log.w("hhaahaa", "Connection suspended stop here ");


}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
    Log.w("hhaahaa", "Connection failed stop here ");
}

@Override
public void onLocationChanged(Location location) {
    Log.w("hello", "Firing onLocationChanged..............................................");
    mCurrentLocation = location;
    if (mCurrentLocation != null) {
        Log.w("hi", mCurrentLocation.getLatitude() + "  " + mCurrentLocation.getLongitude());

    }
    stopLocationService();
}


public void stopLocationService() {

    Log.w("haha", "killing begins");

    LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
    mGoogleApiClient.disconnect();
    cnt.cancel();

    Intent alarm = new Intent(this, BackgrndService.class);


    PendingIntent pendingIntent = PendingIntent.getService(this, 0, alarm, 0);

    if (bool == 0) {
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime()
                + 1000 * 100, pendingIntent);
        bool = 1;
    }

} }

Answer 1

如果在 onHandleIntent() 运行期间没有向其发送更多命令，IntentService 在 onHandleIntent() 结束时自动停止。因此，您不必自己手动停止 IntentService。

Answer 2

要么将 Intent-Service 转移或更改为 Service 并使用 stopSelf() 方法停止 service.This 方法停止服务。

Android：意向服务

Android: Intent Service

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