沒有為Alarm調用BroadcastReceiver的onReceive（）

Question

我一直在嘗試設置警報，並使用在觸發警報時調用的BroadcastReceiver。 花了幾個小時，但是我無法調用onReceive（）。

在某種程度上，這在API 21上可以很好地工作，但是在API 18上卻一直失敗，這就是我希望它可以在其中工作的地方。

---

dumpsys警報

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}}

---

表現

<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>

---

活動

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

公共類Receiver擴展了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上針對Nexus 5，API 18的仿真器進行測試。

我希望這種詳細程度足以重現此問題。 我該如何進行這項工作？

Answer 1

活動

     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();

}}}

添加到清單文件后，您需要設置意圖操作嘗試此代碼，它將確保對您有幫助