java - 我在状态条码中有一条通知，但 AIDE 将两件事标记为错误

Question

MainActivity.java我需要制作一个状态栏通知，并且我从研究中获得了此代码，但是当我将代码放入AIDE时，它似乎并没有奏效

NotificationManager
mNotificationManager = (NotificationManager)
getSytemService(Context.N);
Notification notification = new notification(R.drawble.ic_launcher,
"Notification Test", System.currentT;
Context context = getApplicationContext();
CharSequence contentTitle = "My notification Title";
CharSequence contentText ="This is the message";
Intent notificationIntent = new Intent(this, MainActivity.class);

错误似乎Line 3与出现错误消息的(Context.N)位置有关： 。另一条错误消息在第五行，它读取的错误消息为.NUnknown member 'N' of 'android.content.Context'System.currentTUnknown member 'currentT' of 'java.lang.Sytem'

Answer 1

Context.N应该是Context.NOTIFICATION_SERVICE。

System.currentT应该是System.currentTimeMillis()。

似乎您正在从某个地方复制代码，但代码被截断了？

---

这是生成通知的示例方法。

^{这是基于 Android 的文档：Building a Notification。有关更多详细信息（例如如何显示进度条或扩展视图），请阅读文档。}

private static void generateNotification(Context context, String messageTitle, String messageText)
{
    // Get notification manager.
    final NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

    // Setup notification builder.
    final NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context)
        .setSmallIcon(R.drawable.ic_notification)
        .setContentTitle(messageTitle)
        .setContentText(messageText)
        .setAutoCancel(true)
        .setDefaults(Notification.DEFAULT_ALL);

    // Create intent.
    final Intent resultIntent = new Intent(context, MainActivity.class);

    // Setup task stack builder.
    final TaskStackBuilder taskStackBuilder = TaskStackBuilder.create(context);
    taskStackBuilder.addParentStack(MainActivity.class);
    taskStackBuilder.addNextIntent(resultIntent);

    // Create pending intent.
    final PendingIntent resultPendingIntent = taskStackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

    // Update notification builder.
    notificationBuilder.setContentIntent(resultPendingIntent);

    // Post notification.
    notificationManager.notify(0, notificationBuilder.build());
}

该类NotificationCompat.Builder需要 Android 的第 4 版支持库。