android – 将下载进度条更新为AsynTask的通知区域

2023年12月17日 189次阅读

我已经将Async Task实现为Service.这是初始化进度通知,我从onPreExecute调用.

mProgressNotificationManager = (NotificationManager) this
            .getSystemService(Context.NOTIFICATION_SERVICE);

    CharSequence tickerText = "Download";

    mProgressNotification = new Notification(R.drawable.ic_launcher, tickerText, System.currentTimeMillis());
    context = this.getApplicationContext();

    Intent mNotificationIntent = new Intent(context, ActivityClass.class);
    PendingIntent mPendingIntent = PendingIntent.getActivity(context, 0, mNotificationIntent, 0);
    //mProgressNotification.flags |= Notification.FLAG_AUTO_CANCEL;
    mProgressNotification.flags = mProgressNotification.flags | Notification.FLAG_ONGOING_EVENT;
    CharSequence title = "Downloading initializing...";
    RemoteViews contentView = new RemoteViews(getPackageName(),
            R.layout.noti);
    contentView.setImageViewResource(R.id.status_icon,
            R.drawable.ic_launcher);
    contentView.setTextViewText(R.id.status_text, title);
    contentView.setProgressBar(R.id.status_progress, 100, 0, false);
    mProgressNotification.contentView = contentView;
    mProgressNotification.contentIntent = mPendingIntent;
    mProgressNotificationManager.notify(STATUS_BAR_NOTIFICATION, mProgressNotification);

之后在doInBackground中,我实现了我的下载程序,之后我正在更新下载进度,

@Override
    protected void onProgressUpdate(Integer... progress) {
        super.onProgressUpdate(progress);

        int mDownloadProgress = progress[0];
        // Log.d(TAG,"AsyncTask : download In progress");           
        CharSequence title =  "fileName" +":  "  + mDownloadProgress + "%";
        mProgressNotification.contentView.setTextViewText(R.id.status_text, title);
        mProgressNotification.contentView.setProgressBar(R.id.status_progress, 100,
                mDownloadProgress, false);
        mProgressNotificationManager.notify(STATUS_BAR_NOTIFICATION, mProgressNotification);            

    }

它正常工作..正确更新,但问题是,通知栏被绞死.我无法向上通知栏.我想更新通知栏,例如从谷歌市场下载任何应用程序(播放).

谢谢…

最佳答案 似乎正在发生的是您正在替换通知,这意味着要显示新通知.

您需要做的是更新通知而不是替换它.

看看这个:)

http://developer.android.com/guide/topics/ui/notifiers/notifications.html#Updating

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