Question

我正在尝试创建一个简单的应用程序，以每天在特定时间发出通知，但是不知何故，它在所有代码中均不返回错误：

按下通知后开始通知的按钮：

setRenider.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.HOUR_OF_DAY,18);
            calendar.set(Calendar.MINUTE,14);
            calendar.set(Calendar.SECOND,0);

            Intent intent = new Intent(getApplicationContext(),Notification_reciever.class);

            PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(),100,intent,PendingIntent.FLAG_UPDATE_CURRENT);

            AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(),AlarmManager.INTERVAL_DAY,pendingIntent);

        }
    });

然后这是通知类：

public class Notification_reciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {

    NotificationManager notificationManager = (NotificationManager) context.getSystemService(context.NOTIFICATION_SERVICE);
    Intent repeating_intent = new Intent(context,ReaptingActivity.class);
    repeating_intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(context,100,repeating_intent,PendingIntent.FLAG_UPDATE_CURRENT);
    NotificationCompat.Builder builder = new NotificationCompat.Builder(context).setContentIntent(pendingIntent).setSmallIcon(R.drawable.ic_free_breakfast_black_24dp)
            .setContentTitle("Water Time").setContentText("Drink Water").setAutoCancel(true);

    notificationManager.notify(100,builder.build());


  }
}

，然后创建一个简单的空活动，命名为ReaptingActivity 然后在清单中输入这些代码：

<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>

<application
    <receiver android:name=".Notification_reciever"/>
</application>

基于我遵循的教程，它应该可以运行，但是还没有。请注意，我输入的时间是正确的，但没有任何通知！！！

Answer 1

我只需要它在通知类onRecieve方法上添加一个频道。这是我创建频道的方式：

    int notificationId = 1;
    String channelId = "channel-01";
    String channelName = "Channel Name";
    int importance = NotificationManager.IMPORTANCE_HIGH;

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        NotificationChannel mChannel = new NotificationChannel(
                channelId, channelName, importance);
        notificationManager.createNotificationChannel(mChannel);
    }

然后在通知兼容性构建器上，我需要它来传递频道

NotificationCompat.Builder builder = new NotificationCompat.Builder(context, channelId)

andriod通知无法正常工作，不会返回任何错误

1 个答案: