android - 为什么 NotificationManager 不接受我的通知

Question

我无法获得 NotificationManager的 Notifiy接受我的论点。该方法应该采用 3 个参数。

String        tag
int           id
Notification  notification

为了构建通知，我使用了 NotificationCompat类，但我什至尝试过Notification.Builder .

import android.app.Notification;
import android.support.v4.app.NotificationCompat;

关于我的构建配置，如下:

compileSdkVersion 23
buildToolsVersion "23.0.2"

minSdkVersion 14
targetSdkVersion 21

编辑:代码记录:

import android.app.Notification;
import android.support.v4.app.NotificationCompat;

private void showNotification(Context context, String category, String title, String text, int tag, boolean ongoing)
{
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

    Intent intent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);
    PendingIntent pendingIntent = PendingIntent.getActivity(context, new Random().nextInt(), intent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
    builder.setContentTitle(title);
    builder.setContentText(text);
    builder.setContentIntent(pendingIntent);
    builder.setOngoing(ongoing);
    builder.setSmallIcon(R.drawable.ic_launcher);

    Notification notification = builder.build();
    notificationManager.showNotification(context, category, title, text, new Random().nextInt(), ongoing);
    notificationManager.notify(null, 0, notification);
}

Answer 1

使用Compat版本NotificationManagerCompat，初始化notificationManager = NotificationManagerCompat.from(getApplicationContext());。之后，通知管理器 notificationManager.notify(null, 0, notification);

import android.support.v4.app.NotificationCompat;

...

private NotificationManagerCompat notificationManager;

...

// onCreate
notificationManager = NotificationManagerCompat.from(getApplicationContext());

...

// Somewhere in your code
Notification notification = new NotificationCompat.Builder(this)
    .setContentTitle("I'm a title")
    .setContentText("Some text")
    .setSmallIcon(R.drawable.ic_notification)
    .setContentIntent(pendingIntent)
    .build();

notificationManager.notify(null, 0, notification);