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執行。在我的Android清單我已經定義了一個BroadcastReceiver這樣的:的Android AlarmManager不會在當前時間
<receiver android:name="com.myexample.mycompany.countdownapp.MainActivity$WarningReceiver"
android:enabled="true"/>
,然後在我的mainActivity我有一個WarningReceiver類。整個mainActivity非常小,看起來像這樣:
package com.myexample.mycompany.countdownapp;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;
import java.util.Calendar;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//10 seconds later
Calendar cal = Calendar.getInstance();
cal.add(Calendar.SECOND, 0);
AlarmManager alarmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, WarningReceiver.class);
PendingIntent alarmIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
alarmMgr.set(AlarmManager.ELAPSED_REALTIME,
cal.getTimeInMillis(), alarmIntent);
}
public static class WarningReceiver extends BroadcastReceiver {
public Void sendWarningEvent() throws Exception {
// fire off warning event
Log.v("WarningReceiver", "sendWarningEvent called from WarningReceiver");
return null;
}
@Override
public void onReceive(Context context, Intent intent) {
try {
Toast.makeText(context,
"WarningReceiver.onReceive()",
Toast.LENGTH_LONG).show();
sendWarningEvent();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
當我運行應用程序沒有被觸發。我究竟做錯了什麼 ?
日曆讓你有時間的RTC。當前配置中的警報管理器預計ELAPSED_REALTIME。更改參數。 –
ELAPSED_REALTIME - SystemClock.elapsedRealtime()中的鬧鐘時間(自啓動以來的時間,包括睡眠時間)。不知道你得到了你想要的。 –