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我有以下代码使用AsyncTask下载视频。Android进度对话框从类文件设置消息
//DOWNLOAD VIDEOS
private class downloadVideosAsync extends AsyncTask <String, String, String>{
protected void onPreExecute(){
super.onPreExecute();
MyActivity.this.mProgressDialog.setMessage("Downloading Videos...");
}
@Override
protected String doInBackground(String... strings){
try{
VideosC.downloadVideos(VideosM.getVideoNames(), VideosM.getVideoUrls(),
VideosM.getVideoThumbs(), VideosM.getFileModified());
}catch (NullPointerException e){
Log.e(LOG_TAG, e.toString());
}catch(Exception e){
Log.e(LOG_TAG, e.toString());
}
return null;
}
@Override
protected void onPostExecute(String lenghtOfFile) {
new downloadSlideshowsAsync().execute();
}
}
正如你所看到的,我已经为我的进度对话框设置了消息“下载视频...”。现在我想要做的就是像setMessage(“下载1的5”)。但问题是我的下载视频功能是在另一个类文件VideosController.java
public void downloadVideos(ArrayList<String> VideoNames, ArrayList<String> VideoUrls,
ArrayList<String> VideoThumbs, ArrayList<String> fileModified){
try{
int x;
int videoNamesLenght = VideoNames.size();
File vidFile;
for(x = 0; x < videoNamesLenght; x++) {
String[] videoName = VideoNames.get(x).split("/");
String currentFile = videoName[0] + "." + videoName[1];
String currentFileURL = VideoUrls.get(x) + VideoNames.get(x);
Log.v(LOG_TAG, "currentFileURL: " + currentFileURL);
vidFile = new File(Environment.getExternalStorageDirectory()
+ "/MyApp/Downloads/Videos/", currentFile);
//I want to do maybe here something like
//mProgressDialog.setMessage("Downloading x of y")
downloadVideoFile(currentFile, currentFileURL, vidFile, fileModified.get(x));
}
}catch(Exception e){
Log.e(LOG_TAG, e.toString());
}
}
任何想法?非常感谢您的帮助! :)
感谢您的回复@rafeal朴,但你有一个示例代码,它实际上是一个初学者。 :) – MiD 2012-03-02 02:57:16
对不起,我手里没有任何样品。 – 2012-03-02 03:08:24
当调用VideosController时,您可以传递上下文对象。从Context可以访问静态函数,请在onPostExecute方法中设置此代码。 – 2012-03-02 03:09:44