Question

我正在制作一个Android应用程序，我必须在android中使用进度对话框。我想在我点击登录按钮时加载进度图像。实际上我正在解析响应，我想要直到响应被解析的时候它应该显示进度对话框。任何帮助将不胜感激。感谢。

Answer 1

是的，你可以像下面的代码那样做并链接。 http://developer.android.com/reference/android/os/AsyncTask.html

  private class DownloadFilesTask extends AsyncTask<URL, Integer, Long> {
         protected Long doInBackground(URL... urls) {
             int count = urls.length;
             long totalSize = 0;
             for (int i = 0; i < count; i++) {
                 totalSize += Downloader.downloadFile(urls[i]);
                 publishProgress((int) ((i / (float) count) * 100));
             }
             return totalSize;
         }

         protected void onProgressUpdate(Integer... progress) {
             setProgressPercent(progress[0]);
         }

         protected void onPostExecute(Long result) {
             showDialog("Downloaded " + result + " bytes");
         }
     }

Answer 2

显示像这样的对话框

ProgressDialog pd=new ProgressDialog(context);
pd.setMessage("Loading..");pd.setTitle("Please wait");
Thread thread=new Thread(new Runnable() {
    @Override
    public void run() {

            //do your parsing;  //But do not update user interface here
            handler1.sendEmptyMessage(1);
    }
});
pd.show();
thread.start();

现在使用处理程序类

处理程序消息和解除对话框

 private Handler handler=new Handler(){
    //Handle message here and dismiss dialog box
};

按钮上的进度对话框单击android

2 个答案: