【发布时间】：2014-08-19 12:15:27
【问题描述】：
我正在从事服务工作，实际上我想要的是每分钟调用一次事件，假设我想每分钟打印一次日志，我的哪些代码工作正常但只有当活动在前台时，当我在最小化应用程序或关闭它，它会给出如下错误：
08-19 17:31:33.936: E/AndroidRuntime(14264): FATAL EXCEPTION: main
08-19 17:31:33.936: E/AndroidRuntime(14264): java.lang.RuntimeException: Unable to stop activity {com.example/com.example.MainActivity}: java.lang.IllegalArgumentException: Receiver not registered: com.example.MainActivity$1@41117730
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3629)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread.handleStopActivity(ActivityThread.java:3675)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread.access$900(ActivityThread.java:162)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.os.Handler.dispatchMessage(Handler.java:99)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.os.Looper.loop(Looper.java:158)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread.main(ActivityThread.java:5751)
08-19 17:31:33.936: E/AndroidRuntime(14264): at java.lang.reflect.Method.invokeNative(Native Method)
08-19 17:31:33.936: E/AndroidRuntime(14264): at java.lang.reflect.Method.invoke(Method.java:511)
08-19 17:31:33.936: E/AndroidRuntime(14264): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1083)
08-19 17:31:33.936: E/AndroidRuntime(14264): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:850)
08-19 17:31:33.936: E/AndroidRuntime(14264): at dalvik.system.NativeStart.main(Native Method)
08-19 17:31:33.936: E/AndroidRuntime(14264): Caused by: java.lang.IllegalArgumentException: Receiver not registered: com.example.MainActivity$1@41117730
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:719)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1620)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:445)
08-19 17:31:33.936: E/AndroidRuntime(14264): at com.example.MainActivity.onStop(MainActivity.java:143)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.Instrumentation.callActivityOnStop(Instrumentation.java:1305)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.Activity.performStop(Activity.java:5338)
08-19 17:31:33.936: E/AndroidRuntime(14264): at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3626)
08-19 17:31:33.936: E/AndroidRuntime(14264): ... 11 more
我的活动代码如下：
public class MainActivity extends Activity
{
BroadcastReceiver mBroadcastTime;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mBroadcastTime = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
Intent service1 = new Intent(context, MyAlarmService.class);
context.startService(service1);
}
};
IntentFilter mTime = new IntentFilter(Intent.ACTION_TIME_TICK);
registerReceiver(mBroadcastTime, mTime);
}
@Override
public void onPause()
{
super.onPause();
if(mBroadcastTime != null){
unregisterReceiver(mBroadcastTime);
Log.v("BROADCAST ON PAUSE", "UNREGISTERED");
}
}
@Override
public void onStop()
{
super.onStop();
if(mBroadcastTime != null){
unregisterReceiver(mBroadcastTime);
Log.v("BROADCAST ON STOP", "UNREGISTERED");
}
}
@Override
public void onDestroy()
{
super.onDestroy();
if(mBroadcastTime != null){
unregisterReceiver(mBroadcastTime);
Log.v("BROADCAST ON DESTROY", "UNREGISTERED");
}
}
}
【问题讨论】：
-
好吧，但为什么你有 3 次相同的代码？
-
我每 3 种方法检查一次。如果我错了，请纠正我
-
根据 Activity LifeCycle onPause 然后 onStop 然后 onDestory 你只需要做一次。
-
好的，我做到了，现在它没有给出任何错误，但我想要的是如果我关闭我的应用程序应该运行该服务，它应该每分钟触发一些事件（无论我想要什么）。为此我该怎么办？