我有一个监视wifi连接的小部件,所以我启动一个服务来启动广播接收器来检测网络变化 . 一切正常,除非我退出主应用程序:服务停止 .
因此,我在窗口小部件中启动一个警报管理器,它几乎每分钟都会唤醒并检查主应用程序是否已退出 . 如果是这种情况我试图重新启动我的wifi监控服务,这次它崩溃了消息:
不允许启动服务Intent {cmp = package.CallbackNetworkWidgetService(has extras)}:app在后台uid UidRecord {f6e65b9 u0a154 RCVR空闲更改:idle | uncached procs:1 seq(0,0,0)}
问题在于新的意图/服务模式 . 它一直有效,直到牛轧糖 .
问题:
-
我的方法是否正确?
-
我对前台/后台服务的概念有点失落 . 小部件是一个背景svce? wifi监控服务/ BR也是后台svce?
-
这里有什么问题?
表现:
<receiver android:name=".Widget.TestWidget">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<intent-filter>
<action android:name="AUTO_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/test_widget_info" />
</receiver>
<service android:name=".Widget.CallbackNetworkWidgetService"></service>
CallbackWidgetNetworkService
@Override
public int onStartCommand(Intent i, int flags, int startId) {
context = this.getApplicationContext();
Log.i("WIDNET", "onStart network");
isWifiConnected();
return Service.START_NOT_STICKY;
}
public void isWifiConnected(){
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
getNetworkInfo();
// Log.i("WIDNET", "broadcastReceiver ipwan: "+ipwan+" type: "+type);
}
};
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
context.registerReceiver(broadcastReceiver, intentFilter);
}
Appwidget - startNetworkService
public static void startNetworkService(Context context){
int[] allWidgetIds = new int[0];
Log.i("WIDNET", "start network service");
ComponentName thisWidget = new ComponentName(context,
TestWidget.class);
if(widgetManager != null)
allWidgetIds = widgetManager.getAppWidgetIds(thisWidget);
if(intentNetwork != null) {
CallbackNetworkWidgetService cnws = new CallbackNetworkWidgetService();
cnws.stopSelf();
Log.i("WIDNET", "stop network service");
}
intentNetwork = new Intent(context.getApplicationContext(),
CallbackNetworkWidgetService.class);
intentNetwork.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, allWidgetIds);
context.startService(intentNetwork);
}
1 回答
您需要为此目的使用前台服务 .
不要忘记api 26的通知: