Show ProgressDialog Android
Solution 1
Declare your progress dialog:
ProgressDialog progress;
When you're ready to start the progress dialog:
progress = ProgressDialog.show(this, "dialog title",
"dialog message", true);
and to make it go away when you're done:
progress.dismiss();
Here's a little thread example for you:
// Note: declare ProgressDialog progress as a field in your class.
progress = ProgressDialog.show(this, "dialog title",
"dialog message", true);
new Thread(new Runnable() {
@Override
public void run()
{
// do the thing that takes a long time
runOnUiThread(new Runnable() {
@Override
public void run()
{
progress.dismiss();
}
});
}
}).start();
Solution 2
I am using the following code in one of my current projects where i download data from the internet. It is all inside my activity class.
// ---------------------------- START DownloadFileAsync // -----------------------//
class DownloadFileAsync extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// DIALOG_DOWNLOAD_PROGRESS is defined as 0 at start of class
showDialog(DIALOG_DOWNLOAD_PROGRESS);
}
@Override
protected String doInBackground(String... urls) {
try {
String xmlUrl = urls[0];
URL u = new URL(xmlUrl);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
int lengthOfFile = c.getContentLength();
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
long total = 0;
while ((len1 = in.read(buffer)) > 0) {
total += len1; // total = total + len1
publishProgress("" + (int) ((total * 100) / lengthOfFile));
xmlContent += buffer;
}
} catch (Exception e) {
Log.d("Downloader", e.getMessage());
}
return null;
}
protected void onProgressUpdate(String... progress) {
Log.d("ANDRO_ASYNC", progress[0]);
mProgressDialog.setProgress(Integer.parseInt(progress[0]));
}
@Override
protected void onPostExecute(String unused) {
dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
}
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DIALOG_DOWNLOAD_PROGRESS:
mProgressDialog = new ProgressDialog(this);
mProgressDialog.setMessage("Retrieving latest announcements...");
mProgressDialog.setIndeterminate(false);
mProgressDialog.setMax(100);
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.setCancelable(true);
mProgressDialog.show();
return mProgressDialog;
default:
return null;
}
}
Solution 3
While creating the object for the progressbar check the following.
This fails:
dialog = new ProgressDialog(getApplicationContext());
While adding the activities context works..
dialog = new ProgressDialog(MainActivity.this);
Solution 4
You should not execute resource intensive tasks in the main thread. It will make the UI unresponsive and you will get an ANR. It seems like you will be doing resource intensive stuff and want the user to see the ProgressDialog
. You can take a look at http://developer.android.com/reference/android/os/AsyncTask.html to do resource intensive tasks. It also shows you how to use a ProgressDialog
.
Solution 5
I am using the following code in one of my current projects where i download data from the internet. It is all inside my activity class.
private class GetData extends AsyncTask<String, Void, JSONObject> {
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = ProgressDialog.show(Calendar.this,
"", "");
}
@Override
protected JSONObject doInBackground(String... params) {
String response;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse responce = httpclient.execute(httppost);
HttpEntity httpEntity = responce.getEntity();
response = EntityUtils.toString(httpEntity);
Log.d("response is", response);
return new JSONObject(response);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(JSONObject result)
{
super.onPostExecute(result);
progressDialog.dismiss();
if(result != null)
{
try
{
JSONObject jobj = result.getJSONObject("result");
String status = jobj.getString("status");
if(status.equals("true"))
{
JSONArray array = jobj.getJSONArray("data");
for(int x = 0; x < array.length(); x++)
{
HashMap<String, String> map = new HashMap<String, String>();
map.put("name", array.getJSONObject(x).getString("name"));
map.put("date", array.getJSONObject(x).getString("date"));
map.put("description", array.getJSONObject(x).getString("description"));
list.add(map);
}
CalendarAdapter adapter = new CalendarAdapter(Calendar.this, list);
list_of_calendar.setAdapter(adapter);
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
else
{
Toast.makeText(Calendar.this, "Network Problem", Toast.LENGTH_LONG).show();
}
}
}
and execute it in OnCreate Method like new GetData().execute();
where Calendar is my calendarActivity and i have also created a CalendarAdapter to set these values to a list view.
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Comments
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captaindroid almost 2 years
I have an EditText which takes a String from the user and a searchButton. When the searchButton is clicked, it will search through the XML file and display it in the ListView.
I am able to take input from the user, search through the XML file and display the usersearched value in the ListView also.
What I want is to display a
ProgressDialog
after the searchButton is clicked like "PLEASE WAIT...RETRIEVING DATA..." or something like that and dismiss it when the data is shown.public class Tab1Activity extends ListActivity { private Button okButton; private Button searchButton; Toast toast; String xml; private TextView searchText; private String searchTextString; HashMap<String, String> o; ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.tab1); searchButton = (Button) findViewById(R.id.search_button); searchButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub System.out.print("hello"); searchText = (TextView) findViewById(R.id.search_text); searchTextString = searchText.getText().toString(); readXml(searchTextString); } }); } private void readXml(String searchTextString1) { ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>(); String xml = XMLfunctions.getXML(); //Here XMLfunctions is class name which parse xml Document doc = XMLfunctions.XMLfromString(xml); int numResults = XMLfunctions.numResults(doc); if ((numResults <= 0)) { Toast.makeText(Tab1Activity.this, "Testing xmlparser", Toast.LENGTH_LONG).show(); finish(); } NodeList nodes = doc.getElementsByTagName("result"); for (int i = 0; i < nodes.getLength(); i++) { HashMap<String, String> map = new HashMap<String, String>(); Element e = (Element) nodes.item(i); String nameMapString = XMLfunctions.getValue(e, "name"); if ( nameMapString.toLowerCase().indexOf(searchTextString1.toLowerCase()) != -1 ) // != -1 means string is present in the search string { map.put("id", XMLfunctions.getValue(e, "id")); map.put("name", XMLfunctions.getValue(e, "name")); map.put("Score", XMLfunctions.getValue(e, "score")); mylist.add(map); } } ListAdapter adapter = new SimpleAdapter(this, mylist, R.layout.parsexml, new String[] { "name", "Score" }, new int[] { R.id.item_title, R.id.item_subtitle }); setListAdapter(adapter); final ListView lv = getListView(); lv.setTextFilterEnabled(true); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { @SuppressWarnings("unchecked") HashMap<String, String> o = (HashMap<String, String>) lv .getItemAtPosition(position); Toast.makeText(Tab1Activity.this, "Name "+o.get("name")+" Clicked", Toast.LENGTH_LONG) .show(); } }); }
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Varvara Kalinina about 7 yearsProgressDialog has been deprecated since API Level O developer.android.com/reference/android/app/ProgressDialog.html
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Wolf359 about 7 yearsIt says "Use a progress indicator such as ProgressBar inline inside of an activity rather than using this modal dialog." Why don't they simply show us how to do it ? :)
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captaindroid about 12 yearsI have write below code but doesnot work: 'searchButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub System.out.print("hello"); searchText = (TextView) findViewById(R.id.search_text); searchTextString = searchText.getText().toString(); progress.show(Tab1Activity.this, "Dialog Title", "Please wait...loading"); readXml(searchTextString); progress.dismiss(); } });'
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captaindroid about 12 yearsnup,it takes very small time as you can see above i have write readXML method also.
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dldnh about 12 yearsI wonder if readXML runs so quickly that you don't see the progress dialog. if you were doing something over the network that really took a couple seconds -- well first of all, you'd do that in a separate thread, but then you'd see the full effect of the progress dialog. if you do end up adding threads, make sure you
show
anddismiss
the progress dialog in the UI thread. -
captaindroid about 12 yearsBut i think it has enough time to show progressDialog. When i clicked searchButton it takes about 2-3 seconds approx.
-
dldnh about 12 yearsyou know what, it's probably because
readXML
isn't allowing the UI to catch its breath. you might want to put it in its own thread -- either with simplenew Thread(...)
(which I prefer) or withAsyncTask
, as Win Myo Htet suggests. -
dldnh about 12 yearsI've added a snippet of threading from my app into the answer
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captaindroid about 12 yearsI am getting progresDialog for some time but gives force close error without any result.
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captaindroid about 12 yearsI have tried this on button click but gives same force close error:<br/>
new Thread() { public void run() { try { sleep(1000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } progress.dismiss(); } }.start();
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dldnh about 12 years
progress.dismiss
needs to be in the UI thread -- seerunOnUiThread
in my answer -
captaindroid about 12 yearsTried this but same error:
new Thread(new Runnable() { public void run() { readXml(searchTextString); runOnUiThread(new Runnable() { public void run() { progress.dismiss(); } }); } }).start();
ProgressDialog appears but gives force close error without any search result. -
captaindroid about 12 yearsNot in code, when i run the program progress dialog appears but close with in a time and says "THE APPLIATION BBS HAS STOPPED UNPECTEDLY.PLEASE TRY AGAIN. FORCE CLOSE"
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dldnh about 12 years
adb logcat
from the shell/command line will help you determine where the crash was. -
the_gesslar about 12 yearsThe orientation changed just fine for me. I just tested in a 2.3.3 AVD and on my ICS phone.
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captaindroid about 12 yearsreadxml method update ui here. I think thats the reason why it gives force close error.
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darrenp about 9 yearsAFAICS,
dismiss()
can be called safely from any thread. :-) See developer.android.com/reference/android/app/… -
Bob over 7 yearsThis works for me but I'm trying to understand why you are creating a new Thread? Because it shouldn't be on the main thread potentially freezing the UI?
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dldnh over 7 yearsthere are a couple new threads @Bob - which one are you referring to?