android - Android中的警报

Question

public class Alarm extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Intent intent = new Intent(this, AlarmReceiver.class);

        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
        intent, PendingIntent.FLAG_ONE_SHOT);

        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (10 * 1000), pendingIntent);
        Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show();
    }
}

和

public final class AlarmReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show();
    }
}

10 秒后，我开始吐司作为警报工作..但没有默认声音？如何在 android 中获取警报声音，而不是 toas 我如何显示对话框..？

Answer 1

AlarmManager与声音无关。您可能AlarmManager对闹钟应用程序感到困惑。欢迎您通过广播接收器播放声音，尽管我没有尝试过。

Answer 2

NotificationManager nm;
@Override
public void onReceive(Context context, Intent intent) {
    nm = (NotificationManager) context.getSystemService(
        Context.NOTIFICATION_SERVICE);
    CharSequence from = "Check your..";
    CharSequence message = "It's time !";
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
        new Intent(), 0);
    Notification notif = new Notification(R.drawable.ic_launcher,
        "ut text", System.currentTimeMillis());
    notif.setLatestEventInfo(context, from, message, contentIntent);
    notif.defaults |= Notification.DEFAULT_SOUND; 
    notif.flags |= Notification.FLAG_AUTO_CANCEL; 
    nm.notify(1, notif);