没有为Alarm调用BroadcastReceiver的onReceive（）

Question

我一直在尝试设置警报，并使用在触发警报时调用的BroadcastReceiver。 花了几个小时，但是我无法调用onReceive（）。

在某种程度上，这在API 21上可以很好地工作，但是在API 18上却一直失败，这就是我希望它可以在其中工作的地方。

---

dumpsys警报

RTC_WAKEUP #2: Alarm{b1fc3710 type 0 srk.test.broadcastreceiver}

type=0 when=-12s1ms repeatInterval=0 count=0

operation=PendingIntent{b1afd430: PendingIntentRecord{b1fc7c28 srk.test.broadcastreceiver broadcastIntent}}

---

表现

<application ...> 

    <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
        ...
    <receiver
        android:name="srk.test.broadcastreceiver.Receiver"
                android:exported="true" >
            <intent-filter>
                <action android:name="srk.test.broadcastreceiver.alarm_intent" >
                    </action>
            </intent-filter>
    </receiver>
</application>

---

活动

Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {

        Intent intent = new Intent("srk.test.broadcastreceiver.alarm_intent");

        PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 123456789,
                            intent, PendingIntent.FLAG_UPDATE_CURRENT);

        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

        alarmManager.cancel(pendingIntent);

        alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (2 * 1000), pendingIntent);

        Log.i("SRK", "Alarm Scheduled ... ");
        Toast.makeText(getApplicationContext(), "Alarm set", Toast.LENGTH_LONG).show();
    }
});

---

接收器

公共类Receiver扩展了BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {

    Log.i("SRK", "Alarm Triggered!");
    Toast.makeText(context, "Alarm Triggered!", Toast.LENGTH_LONG).show();

}

---

我正在Windows的Android Studio上针对Nexus 5，API 18的仿真器进行测试。

我希望这种详细程度足以重现此问题。 我该如何进行这项工作？

Answer 1

活动

     Button button = (Button) findViewById(R.id.button);
     button.setOnClickListener(new OnClickListener() {
     @Override
     public void onClick(View v) {

     Intent intent = new Intent(getActivity(), BroadcastReceiver .class);
                    String strAction = "srk.test.broadcastreceiver.alarm_intent";
                    intent.setAction(strAction);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 123456789,
                        intent, 0);

    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

    alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (2 * 1000), pendingIntent);

    Log.i("SRK", "Alarm Scheduled ... ");
    Toast.makeText(getApplicationContext(), "Alarm set", Toast.LENGTH_LONG).show();
 }
 });

Reciever

public class Receiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {

if(intent.getAction().equals("srk.test.broadcastreceiver.alarm_intent")){
Log.i("SRK", "Alarm Triggered!");
Toast.makeText(context, "Alarm Triggered!", Toast.LENGTH_LONG).show();

}}}

添加到清单文件后，您需要设置意图操作尝试此代码，它将确保对您有帮助