由网友(一生放荡)分享简介：我想提出一个进度条，在通知栏。这个想法是显示进度条，而程序文件上载到服务器。一切是好的，但我想不出如何刷新通知里面的进度条。有谁知道任何图案一起玩？我的意思是，我应该在哪里刷新进度条，在服务或活动等。I would like to put a progress bar in the notification bar....

我想提出一个进度条，在通知栏。这个想法是显示进度条，而程序文件上载到服务器。一切是好的，但我想不出如何刷新通知里面的进度条。有谁知道任何图案一起玩？我的意思是，我应该在哪里刷新进度条，在服务或活动等。

I would like to put a progress bar in the notification bar. The idea is showing the progress bar while the program uploads a file to a server. Everything else is ok, but I can not figure out how to refresh the progress bar inside the notification. Does anybody knows any pattern to play with? I mean, where I should refresh the progress bar, in a service or activity and so.

推荐答案

我不知道你的code的样子，所以我不知道你需要修改，​​布提做了一些搜索通过文档。我发现了一些东西在Notifications, ProgressBars,和RemoteViews.

I don't know what your code looks like, so I don't know what you need to modify, butI did some searching through the documentation. I found some stuff on Notifications, ProgressBars, and RemoteViews.

具体而言，在RemoveView，您可以更新进度条。因此，结合一些例子code中的每一个环节，我得到的是这样的：

Specifically, in RemoveView, you can update the Progress bar. So combining some of the example code in each link, I get something like this:

public class MyActivity extends Activity {
    private static final int PROGRESS = 0x1;
    private static final int MAX_PROGRESS = 100;

    private int mProgressStatus = 0;

    private Handler mHandler = new Handler();

    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        //define Notification
        //...

        RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification_layout);
        contentView.setProgressBar(R.id.progress_bar, MAX_PROGRESS, mProgressStatus, false);
        notification.contentView = contentView;

        // Start file upload in a background thread
        new Thread(new Runnable() {
            public void run() {
                while (mProgressStatus < MAX_PROGRESS) {
                    mProgressStatus = doWork();

                    // Update the progress bar
                    mHandler.post(new Runnable() {
                        public void run() {
                            contentView.setProgressBar(R.id.progress_bar, MAX_PROGRESS, mProgressStatus, false);
                        }
                    });
                }
            }
        }).start();
    }
}