Android：停止服务
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【中文标题】Android：停止服务【英文标题】：Android: Stop service 【发布时间】：2014-06-22 16:51:56 【问题描述】：我正在尝试一个演示，在该演示中，我在启动按钮上启动一项服务。该服务在后台运行，获取 GPS 位置并将其发送到服务器。代码如下：
主要活动
public class MainActivity extends Activity implements OnClickListener
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button start = (Button) findViewById(R.id.button_start);
Button stop = (Button) findViewById(R.id.button_stop);
start.setOnClickListener(this);
stop.setOnClickListener(this);
@Override
public void onClick(View v)
if(v.getId() == R.id.button_start)
Intent intent = new Intent(this,androidLocationServices.class);
startService(intent);
else if(v.getId() == R.id.button_stop)
Intent intent = new Intent(this,AndroidLocationServices.class);
stopService(intent);
Android 位置监听器
public class AndroidLocationServices extends Service
WakeLock wakeLock;
private LocationManager locationManager;
String lat,longi;
public AndroidLocationServices()
@Override
public IBinder onBind(Intent arg0)
return null;
@Override
public void onCreate()
super.onCreate();
PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);
wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DoNotSleep");
Log.e("Google", "Service Created");
public void onStart(Intent intent, int startId)
Log.e("Google", "Service Started");
locationManager = (LocationManager) getApplicationContext()
.getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
5000, 5, listener);
private LocationListener listener = new LocationListener()
@Override
public void onLocationChanged(Location location)
Log.e("Google", "Location Changed");
if (location == null)
return;
if (isConnectingToInternet(getApplicationContext()))
JSONArray jsonArray = new JSONArray();
JSONObject jsonObject = new JSONObject();
try
Log.e("latitude", location.getLatitude() + "");
Log.e("longitude", location.getLongitude() + "");
lat = String.valueOf(location.getLatitude());
longi = String.valueOf(location.getLongitude());
jsonObject.put("latitude", location.getLatitude());
jsonObject.put("longitude", location.getLongitude());
jsonArray.put(jsonObject);
Log.e("request", jsonArray.toString());
new LocationWebService().execute();
catch (Exception e)
e.printStackTrace();
@Override
public void onProviderDisabled(String provider)
@Override
public void onProviderEnabled(String provider)
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
;
@Override
public void onDestroy()
super.onDestroy();
wakeLock.release();
public static boolean isConnectingToInternet(Context _context)
ConnectivityManager connectivity = (ConnectivityManager) _context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity != null)
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null)
for (int i = 0; i < info.length; i++)
if (info[i].getState() == NetworkInfo.State.CONNECTED)
return true;
return false;
public class LocationWebService extends AsyncTask<String, String, Boolean>
public LocationWebService()
@Override
protected Boolean doInBackground(String... arg0)
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("userLang", longi));
nameValuePairs.add(new BasicNameValuePair("userLat", lat));
nameValuePairs.add(new BasicNameValuePair("device_type", "Android"));
Log.d("Lat",lat);
Log.d("Lan",longi);
// Service Handler to call php URL
ServiceHandler serviceHandler = new ServiceHandler();
// Creating service handler class instance
String jsonStr = serviceHandler.makeHttpRequest("URL", "GET", nameValuePairs);
return null;
服务处理程序
public class ServiceHandler
// Global Declaration.
static String json = "";
public final static int GET = 1;
public final static int POST = 2;
/*
* Constructor.
*/
public ServiceHandler()
/*
* Making service call
* @url - url to make request
* @method - http request method
* */
public String makeHttpRequest(String url, String method, List<NameValuePair> params)
// Making HTTP request
try
// check for request method
if(method == "POST")
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null)
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
json = EntityUtils.toString(httpEntity);
else if(method == "GET")
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
json = EntityUtils.toString(httpEntity);
catch (UnsupportedEncodingException e)
e.printStackTrace();
catch (ClientProtocolException e)
e.printStackTrace();
catch (IOException e)
e.printStackTrace();
return json;
现在我的服务不会在点击停止按钮时停止。我收到以下错误：
05-06 12:51:12.000: D/AndroidRuntime(11736): Shutting down VM
05-06 12:51:12.000: W/dalvikvm(11736): threadid=1: thread exiting with uncaught exception (group=0x416af2a0)
05-06 12:51:12.007: E/AndroidRuntime(11736): FATAL EXCEPTION: main
05-06 12:51:12.007: E/AndroidRuntime(11736): java.lang.RuntimeException: Unable to stop service com.oi.demointentservice.AndroidLocationServices@41e910f8: java.lang.RuntimeException: WakeLock under-locked DoNotSleep
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.app.ActivityThread.handleStopService(ActivityThread.java:2575)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.app.ActivityThread.access$2000(ActivityThread.java:140)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1330)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.os.Handler.dispatchMessage(Handler.java:99)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.os.Looper.loop(Looper.java:137)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.app.ActivityThread.main(ActivityThread.java:4895)
05-06 12:51:12.007: E/AndroidRuntime(11736): at java.lang.reflect.Method.invokeNative(Native Method)
05-06 12:51:12.007: E/AndroidRuntime(11736): at java.lang.reflect.Method.invoke(Method.java:511)
05-06 12:51:12.007: E/AndroidRuntime(11736): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
05-06 12:51:12.007: E/AndroidRuntime(11736): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
05-06 12:51:12.007: E/AndroidRuntime(11736): at dalvik.system.NativeStart.main(Native Method)
05-06 12:51:12.007: E/AndroidRuntime(11736): Caused by: java.lang.RuntimeException: WakeLock under-locked DoNotSleep
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.os.PowerManager$WakeLock.release(PowerManager.java:363)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.os.PowerManager$WakeLock.release(PowerManager.java:338)
05-06 12:51:12.007: E/AndroidRuntime(11736): at com.oi.demointentservice.AndroidLocationServices.onDestroy(AndroidLocationServices.java:130)
05-06 12:51:12.007: E/AndroidRuntime(11736): at android.app.ActivityThread.handleStopService(ActivityThread.java:2558)
05-06 12:51:12.007: E/AndroidRuntime(11736): ... 10 more
请建议我现在该做什么。
【问题讨论】：
【参考方案1】：首先：
@Override
public void onDestroy()
wakeLock.release();
stopMyService();
super.onDestroy();
第二： 在停止服务之前，您必须取消注册侦听器（位置一），然后您可以停止：
stopSelf();
按如下方式注销监听器是一个好习惯：
public void closeMyService()
context.unregisterReceiver(receiver);
locationManager.removeUpdates(this);
【讨论】：
【参考方案2】：在destroy方法中检查WakeLock对象为null，因为有时服务没有启动，然后在onDestroy()方法中我们需要检查它。
if( wakeLock.isHeld())
wakeLock.release();
onStart() 方法已被弃用，因此您可以使用 onStartCommand() 代替。 希望它能达到你的目的
【讨论】：
现在检查问题。 @ManojFegde 我已经使用 isHeld() 函数在上述模式中编辑了我的答案检查 wakeLock 对象，现在错误已解决以上是关于Android：停止服务的主要内容，如果未能解决你的问题，请参考以下文章