Question

我是Android编程新手，在Java方面经验不足。

我在活动中加载带有webview的url，然后调用asynctask来解析url中的文本。解析后，我想通过通知将其发布到状态栏。在doInBackground之后，我将解析后的字符串传递给onPostExecute但是有编译器错误。

不确定我是否可以从中调用notificationcompat.builder asynctask中的onPostExecute或者是否需要从中调用活性。
在doInBackground之后会自动调用onPostExecute吗？

谢谢，克雷格

protected void onPostExecute(String mycontent) {
// set up for notification in the notification status bar
        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(getApplicationContext())

.setSmallIcon(R.drawable.ic_stat_notify_lightning)
                        .setContentTitle("My Title Here")
                        .setContentText(mycontent);


        // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(this, WebViewActivity.class);

// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(WebViewActivity.class);
// Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );
        mBuilder.setContentIntent(resultPendingIntent);

        // Sets an ID for the notification
        int mNotificationId = 001;
// Gets an instance of the NotificationManager service
        NotificationManager mNotifyMgr =
                (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// Builds the notification and issues it.
        mNotifyMgr.notify(mNotificationId, mBuilder.build());
}

Answer 1

在onPostExecute之后将在主线程上自动调用

doInBackground，你能告诉编译器错误的更多细节吗？

是否可以从asynctask调用状态栏的通知

1 个答案: