Android 安卓中的警报

及

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上午10秒后，将toast设为alarm worke.。但没有默认声音？如何在android中获取报警声音，而不是toas？如何显示对话框？

AlarmManager

与声音无关。您可能将

AlarmManager

与闹钟应用程序混淆了。欢迎您通过广播接收器播放声音，尽管我没有尝试过。

Commonware。如何通过广播接收器播放声音？请帮助我。

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

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

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);