11

*这样做解决了编辑： * 我已经通过更改我onDestroy()的 Activity 和ServiceConnection::onServiceDisconnected().

我添加了一个布尔值来检查我是否绑定到名为boundToService. 服务连接：

private ServiceConnection mConnection = new ServiceConnection() {
    public void onServiceConnected(ComponentName className, IBinder service) {
        myService = ((EventService.MyBinder) service).getService();
    }

    public void onServiceDisconnected(ComponentName name) {
        // TODO Auto-generated method stub
        Log.i(getPackageName(), "ServiceConnection::onServiceDisconnected() called");
        boundToService = false;
    }
};

和onDestroy()：

@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    Log.e(getPackageName(), "Destroying Activity");
    if (boundToService && mConnection != null) {
        doUnbindService();
    }
}

这是在活动中完成绑定和解除绑定的方式：

public void doBindService() {
    bindService(new Intent(this, EventService.class), mConnection,
            Context.BIND_AUTO_CREATE);
    boundToService = true;
}

public void doUnbindService() {
    unbindService(mConnection);
    boundToService = false;
}

正如纪尧姆所说，super.onDestroy()首先打电话是必须的。

*解决方案结束*

我有一个Foreground Service轮询 GPS 数据的设备，并且MapActivity每 3 秒请求一次数据。当 的onDestroy()被MapActivity调用时，我得到这个 LogCat 错误：

06-11 21:26:35.591: D/CLIPBOARD(14801): Hide Clipboard dialog at Starting input: finished by someone else... !
06-11 21:26:44.451: D/dalvikvm(14801): Debugger has detached; object registry had 1371 entries
06-11 21:26:44.451: D/AndroidRuntime(14801): Shutting down VM
06-11 21:26:44.456: W/dalvikvm(14801): threadid=1: thread exiting with uncaught exception (group=0x40c4b1f8)
06-11 21:26:44.476: E/AndroidRuntime(14801): FATAL EXCEPTION: main
06-11 21:26:44.476: E/AndroidRuntime(14801): java.lang.RuntimeException: Unable to destroy activity {com.project4.mtl/com.project4.mtl.EventActivity}: java.lang.IllegalArgumentException: Service not registered: com.project4.mtl.EventActivity$1@416179d8
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3124)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3142)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread.access$1200(ActivityThread.java:127)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1192)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.os.Handler.dispatchMessage(Handler.java:99)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.os.Looper.loop(Looper.java:137)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread.main(ActivityThread.java:4507)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at java.lang.reflect.Method.invokeNative(Native Method)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at java.lang.reflect.Method.invoke(Method.java:511)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at dalvik.system.NativeStart.main(Native Method)
06-11 21:26:44.476: E/AndroidRuntime(14801): Caused by: java.lang.IllegalArgumentException: Service not registered: com.project4.mtl.EventActivity$1@416179d8
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.LoadedApk.forgetServiceDispatcher(LoadedApk.java:888)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ContextImpl.unbindService(ContextImpl.java:1211)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.content.ContextWrapper.unbindService(ContextWrapper.java:375)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at com.project4.mtl.EventActivity.onDestroy(EventActivity.java:175)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.Activity.performDestroy(Activity.java:4629)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1082)
06-11 21:26:44.476: E/AndroidRuntime(14801):    at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3111)
06-11 21:26:44.476: E/AndroidRuntime(14801):    ... 11 more`

当然还有第 175 行的代码，我的程序中出现了异常：

@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    unbindService(mConnection);
    super.onDestroy();
}

如果您想要更多代码片段，请告诉我。

*编辑*

这是 ServiceConnection 的代码：

public void doBindService() {
    //ComponentName service = startService(new Intent(this,
        //  EventService.class));
    bindService(new Intent(this, EventService.class), mConnection,
            Context.BIND_AUTO_CREATE);
}

mConnection是 ServiceConnection 的类型：

private ServiceConnection mConnection = new ServiceConnection() {
    public void onServiceConnected(ComponentName className, IBinder service) {
        myService = ((EventService.MyBinder) service).getService();
    }

    public void onServiceDisconnected(ComponentName name) {
        // TODO Auto-generated method stub

    }
};
4

2 回答 2

4

这对我有用！只需从 getApplicationContext() 调用函数 unbindService() 而不是“this”上下文。（与绑定服务相同）

getApplicationContext().unbindService(mServiceConnection);
于 2012-09-20T14:23:07.560 回答
2

您可以将 in 设置mService为 nullonServiceDisconnected并检查 in onDestroy。像这样：

private ServiceConnection mConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName className, IBinder binder) {
            mService = ((LoadArticlesService.LoadArticlesBinder) binder).getService();
        }
        public void onServiceDisconnected(ComponentName className) {
            mService = null;
        }
    };

销毁：

@Override
protected void onDestroy() {
    super.onDestroy();
    if (mService != null) {
        unbindService(mConnection);
    }
}

工作正常。

于 2017-05-10T08:10:10.737 回答