progressdialog

问题 progress dialog appear to, late probably after async task is finished,in doInBackground it calls a web service and parse an xml,the activity have to wait for some seconds if in xml is a bigger file @Override protected void onPreExecute(){ super.onPreExecute(); completed=false; this.progressDialog.show(); } @Override protected Boolean doInBackground(Integer... params) { t=HttpHelper.callWebService( url, soapAction,xml); if (t.equals("")){ return false; } else { try { SAXParserFactory spf =

问题 In my app, I am calling an async task on a button click and I am using onpreexecute method to start "progress dialog" and onpostexecute to end the same. I am getting this error while implementing the above - "View not attached to window manager." Here is my async code - /** * Async task class to get json by making HTTP call */ private class questionfeed_async extends AsyncTask<Void, Void, Void> { @Override protected void onPreExecute() { // TODO Auto-generated method stub super.onPreExecute()

问题 I am fully aware on how to display progress dialogues in my application. I just want to know if there is anyway that we can set a "timeout" interval for this progress dialog. [I mean is there any API for this] I can always run a thread for this, but thought it would be better if there was an inbuilt API already.. 回答1: There is no built-in api. Just use AsyncTask or thread, how you have already mentioned. 回答2: You can use a Handler as well (post a delayed message to the handler and the handler

问题 I am selecting an image from gallery and moving to MainActivity to display the image selected.I need to display a progress dialog over gallery screen only after I click on an image from gallery and display it for 3 seconds and then i should move to MainActivity to display the selected image.I am getting the dialog here over first activity not over the gallery screen.How should i achieve this?I have spent so much time to solve this.But i did not get it.Please help me .I am providing my updated

问题 I am selecting an image from gallery and moving to MainActivity to display the image selected.I need to display a progress dialog over gallery screen only after I click on an image from gallery and display it for 3 seconds and then i should move to MainActivity to display the selected image.I am getting the dialog here over first activity not over the gallery screen.How should i achieve this?I have spent so much time to solve this.But i did not get it.Please help me .I am providing my updated

问题 I want to show a progress dialog while loading some data from remote server : I'm using the following thread in order to get the data and it's working, but i'm not able to show the progress bar on the activity: public class Request { public String text ; public boolean downloadText(String urlStr) { final String url = urlStr; new Thread () { public void run() { int BUFFER_SIZE = 2000; InputStream in = null; Message msg = Message.obtain(); msg.what=2; try { in = openHttpConnection(url);

问题 I'm new to Android.. In my app I'm using a progress dialog. I want to set background image for progress dialog. How do I implement this? protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(FrontActivity.this); pDialog.setMessage("Loading Grades. Please wait..."); pDialog.setIndeterminate(false); pDialog.setCancelable(false); pDialog.show(); } 回答1: This is my layout for custom progress dialog : <LinearLayout xmlns:android="http://schemas.android.com/apk/res

问题 I'm trying to download an image from url and I need to display the size of the file and the progress of the file downloading. This is what I have. int bytes_downloaded = cursor.getInt(cursor .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)); int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES)); final int dl_progress = (int) ((bytes_downloaded * 100l) / bytes_total); runOnUiThread(new Runnable() { @Override public void run() {

问题 I'm trying to download an image from url and I need to display the size of the file and the progress of the file downloading. This is what I have. int bytes_downloaded = cursor.getInt(cursor .getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR)); int bytes_total = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES)); final int dl_progress = (int) ((bytes_downloaded * 100l) / bytes_total); runOnUiThread(new Runnable() { @Override public void run() {

问题 At the moment, i have a viewpager,when page scroll,i have load api for get new information. But in the first load viewpager,progress loading display two twice because it load first page and next page. I only want to load the first page in viewpager. How must I do? 回答1: best way is to create one interface. and implement this interface to all fragment. e.g. public interface FragmentInterface { void fragmentBecameVisible(); } in ur viewpager activity put like this e.g viewPager