I have some data I load into the database the first time a user enters my Activity, and want to show a ProgressDialog while this data is loaded for the first time. My Activity is an ExpandableListActivity and I don't create the SimpleExpandableListAdapter or call setListAdapter passing my adapter until I'm sure the data is actually there. My onCreate looks like this:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mCategoryDbHelper = new CategoryDBHelper(this);
// Build default categories... if not there yet
CategoryDbBuilder builder = new CategoryDbBuilder(this);
if (!builder.hasCategoriesInTable()) {
showDialog(PROGRESS_DIALOG_ID);
builder.fillDbWithDefaultCategories();
removeDialog(PROGRESS_DIALOG_ID);
}
populate();
}
I've overwritten onCreateDialog as such:
#Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case PROGRESS_DIALOG_ID: {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setMessage("Loading categories for the first time. Please wait...");
dialog.setIndeterminate(true);
dialog.setCancelable(false);
return dialog;
}
}
return null;
}
The populate() method reads the database and sets up my list adapter, then calls setListAdapter.
This seems like it should be simple, but it's turning out to be a huge pain. Any help would be appreciated. :-)
Use AsynTask put your database loading processing in background function and in post execution display result. and there is another function to processing something until background process running here is example of asynTask
Android - I want to show file upload progress to the user
Just use this simple line:
mProgressDialog = ProgressDialog.show(context, "", "msg to show", true);
You can dismiss it with:
mProgressDialog.dismiss();
Related
i'm trying to add a indeterminate progressDialog to my UI once i click a list element that calls a AsyncTask, but unfortunately, if I call the dialog on the onPreExecute like this:
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog.setProgressStyle(R.style.AppTheme_Dark_Dialog);
dialog.setIndeterminate(true);
dialog.setMessage(activity.getString(R.string.Buscando));
dialog.show();
}
Obs: Worth noting that the Async is not a subClass of the Activity Class, i'm passing the activity as a parameter to the constructor.
and
#Override
protected void onPostExecute(BuscaPendentesFechamento buscaPendentesFechamento) {
super.onPostExecute(buscaPendentesFechamento);
if(dialog.isShowing())
dialog.dismiss();
}
the dialog simply doesn't show at all, although it is created and called(alredy checked, the activity instance is correct)
and if I set the dialog on the activity itself, like:
final ProgressDialog progressDialog = new ProgressDialog(RegistraPeso.this, R.style.AppTheme_Dark_Dialog);
progressDialog.setIndeterminate(true);
progressDialog.setMessage(getString(R.string.Buscando));
progressDialog.show();
BuscaPendentesFechamento exportProjectRequisition = new BuscaPendentesFechamento(getApplicationContext());
response = exportProjectRequisition.execute(nomeEquip,RegistraPeso.this);
progressDialog.dismiss();
the Dialog shows on the Ui, but only after the AsyncTask alredy performed, and not before it is called, and according to the code, it should be showing before the Async even gets created.
What can I do? What am I doing wrong? Please help.
Edit: Added where the Dialog is created:
private ProgressDialog dialog;
private RegistraPeso activity;
BuscaPendentesFechamento(RegistraPeso activity) {
this.dialog = new ProgressDialog(activity);
this.activity = activity;
}
Edit: Added the doInBackground:
#Override
protected BuscaPendentesFechamento doInBackground(String... params) {
ArrayList<UmData> jsonArrayResponse = JSONParser.makeHttpRequestArray(
Constants.URL_PENDENTES_FECHAMENTO,
Constants.METHOD_POST, requisition.writeJSON(params[0]),
requisition.getContext());
if(jsonArrayResponse!=null)
requisition.setJsonArrayResponse(jsonArrayResponse);
else {
UmData umData = new UmData();
umData.setItemUm("Server not responding");
jsonArrayResponse = new ArrayList<>();
jsonArrayResponse.add(umData);
requisition.setJsonArrayResponse(jsonArrayResponse);
}
return requisition;
}
Application context would not work in this case . Replace line below
BuscaPendentesFechamento exportProjectRequisition = new BuscaPendentesFechamento(getApplicationContext());
To
BuscaPendentesFechamento exportProjectRequisition = new BuscaPendentesFechamento(YourActivity.this);
I see your code you are calling dismiss() just after execute(). Remove this line.
progressDialog.dismiss();
OP here, the problem was solved by changing the code based on [this][1]
[1]: How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class? post here, sent to me by #MikeM, The problem was that I was getting the response using the .get() from the AsyncTask, and it was transforming the Async into a Syncronous Task.
Thanks for the support Mike!
I made a progress bar to run for 5 second.it showing perfectly for first time.but for second time it not stopping after 5 second.it keeps running.
Code is here
protected Dialog onCreateDialog(int id) {
switch (id) {
case progress_bar_type:
pDialog = new ProgressDialog(this);
pDialog.setMessage("Finding Nearest Officer...");
pDialog.setTitle("Please Wait...");
pDialog.setIndeterminate(false);
//pDialog.setMax(100);
pDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pDialog.setCancelable(false);
pDialog.show();
Timer timer = new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
pDialog.dismiss();
//delayInMillis=5000;
}
}, 5000);
return pDialog;
default:
return pDialog;
}
}
I assume that you need another callback method to be overriden
#Override
protected void onPrepareDialog(int id, Dialog dialog) {
// perform scheduling for dismiss here
super.onPrepareDialog(id, dialog);
}
In other words - onCreateDialog() is being called only first time, but onPrepareDialog is being called each time before you going to show it, so all your scheduling is better to setup inside onPrepareDialog().
Also it is important to notice that all these APIs are deprecated and it is better to take a look at DialogFragment or something similar.
I think you make object from this method like this:
Dialog dialog = onCreateDialog(progress_bar_type);
And call Dialog by that aboject like this:
dialog.show();
but instead of that please call only method where you want that dialog to show.
like this:
onCreateDialog(progress_bar_type);
when ever you want to show dialog please only call this method directly.
you will get same output every time.
I have a listview and I'm loading dynamically items into it.
The problem is when I'm activating that activity. It takes too long, so I have to show some progress dialog while loading the UI.
I really don't know how to do it, since doInBackground (If using Async task) doesn't allow the developer to mess with the UI.
What should I do ?
Here is my UI load code :
LeagueTableRow leagueTableRow_data[] = new LeagueTableRow[]
{
new LeagueTableRow(1,R.drawable.logo,"aaa",12,9,3,14),
new LeagueTableRow(3,R.drawable.logo,"aaa",12,9,3,14),
new LeagueTableRow(4,R.drawable.logo,"aaa",12,9,3,14),
new LeagueTableRow(5,R.drawable.logo,"aaa",12,9,3,14),
new LeagueTableRow(2,R.drawable.logo,"aaa",12,9,3,14)
};
LeagueTableRowAdapter adapter = new LeagueTableRowAdapter(context,
R.layout.leaguetablecontent, leagueTableRow_data);
listViewLeagueTable = (ListView)findViewById(R.id.listViewLeagueTable);
View header = (View)getLayoutInflater().inflate(R.layout.leaguetableheader, null);
listViewLeagueTable.addHeaderView(header);
listViewLeagueTable.setAdapter(adapter);
That can be achieved with the help of AsyncTask (an intelligent backround thread) and ProgressDialog
A ProgressDialog with indeterminate state would be raised when the AsyncTask starts, and the dialog is would be dismissed once the task is finished .
Example code
What the adapter does in this example is not important, more important to understand that you need to use AsyncTask to display a dialog for the progress.
private class PrepareAdapter1 extends AsyncTask<Void,Void,ContactsListCursorAdapter > {
ProgressDialog dialog;
#Override
protected void onPreExecute() {
dialog = new ProgressDialog(viewContacts.this);
dialog.setMessage(getString(R.string.please_wait_while_loading));
dialog.setIndeterminate(true);
dialog.setCancelable(false);
dialog.show();
}
/* (non-Javadoc)
* #see android.os.AsyncTask#doInBackground(Params[])
*/
#Override
protected ContactsListCursorAdapter doInBackground(Void... params) {
cur1 = objItem.getContacts();
startManagingCursor(cur1);
adapter1 = new ContactsListCursorAdapter (viewContacts.this,
R.layout.contact_for_listitem, cur1, new String[] {}, new int[] {});
return adapter1;
}
protected void onPostExecute(ContactsListCursorAdapter result) {
list.setAdapter(result);
dialog.dismiss();
}
}
If you set the emptyview using listView.setEmptyView . The view will show in the place of list until you do a setadapter on the list. So As soon as you do setAdapter the emptyview will disappear. You can pass Progressbar to the setEmptyview in your case to show the progressbar.
Edit:
Use Setadapter in OnPostExecute of the Asynctask.
OnPostExecute, OnPreExecute, OnProgressUpdate, OnCancelled all run on UI thread. If you still insist on ProgressDialog, then create dialog in OnPreExecute and dismiss it in OnpostExecute and OnCancelled of the Asynctask
Please use AsyncTask if loading of list is taking too much time.Place a progress bar on the top of list view use that in AsyncTask.Hope this will help you
I need to make a transition screen, ou just put a dialog, because the app give a black screen when is creating the database.
I have google, and find some solutions for this. One of then, is just put a progress dialog when the database is been created.
My problem, and newbie question is, where do i put the progress dialog.
A -> BlackScreen -> B where A is the inicial menu, and B the other screen. I have tried to put the dialog on A and/or in B and dont work. So where can i put the code of the progress dialog, so it shows in the BlackScreen ?
Make use of Asyntask . put your database operation of creating database in asyntask in pre execute start dialog post execute cancel dialog in background perform database operation
http://developer.android.com/reference/android/os/AsyncTask.html
For that You have to use Async task :
class DownloadAsyncTask extends AsyncTask<String, String, Void>
{
ProgressDialog progressDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = ProgressDialog.show(Login.this, "", "Please Wait ...");
}
#Override
protected Void doInBackground(String... arg0) {
//Do your Task
}
#Override
protected void onProgressUpdate(String...values){
super.onProgressUpdate(values);
}
#Override
protected void onPostExecute(Void result){
super.onPostExecute(result);
progressDialog.dismiss();
}
}
//Create the Object
DownloadAsyncTask downloadAsyncTask = new DownloadAsyncTask();
downloadAsyncTask.execute();
now till your work get's completed it shows progress dialog inside the doInbackground write your logic and onPostExecute dismiss the dialog and call Intent of other Activity.
I'm trying to create a ProgressDialog for an Android-App (just a simple one showing the user that stuff is happening, no buttons or anything) but I can't get it right. I've been through forums and tutorials as well as the Sample-Code that comes with the SDK, but to no avail.
This is what I got:
btnSubmit.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
(...)
ProgressDialog pd = new ProgressDialog(MyApp.this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage("Working...");
pd.setIndeterminate(true);
pd.setCancelable(false);
// now fetch the results
(...long time calculations here...)
// remove progress dialog
pd.dismiss();
I've also tried adding pd.show(); and messed around with the parameter in new ProgressDialog resulting in nothing at all (except errors that the chosen parameter won't work), meaning: the ProgressDialog won't ever show up. The app just keeps running as if I never added the dialog.
I don't know if I'm creating the dialog at the right place, I moved it around a bit but that, too, didnt't help. Maybe I'm in the wrong context? The above code is inside private ViewGroup _createInputForm() in MyApp.
Any hint is appreciated,
you have to call pd.show before the long calculation starts and then the calculation has to run in a separate thread. A soon as this thread is finished, you have to call pd.dismiss() to close the prgoress dialog.
here you can see an example:
the progressdialog is created and displayed and a thread is called to run a heavy calculation:
#Override
public void onClick(View v) {
pd = ProgressDialog.show(lexs, "Search", "Searching...", true, false);
Search search = new Search( ... );
SearchThread searchThread = new SearchThread(search);
searchThread.start();
}
and here the thread:
private class SearchThread extends Thread {
private Search search;
public SearchThread(Search search) {
this.search = search;
}
#Override
public void run() {
search.search();
handler.sendEmptyMessage(0);
}
private Handler handler = new Handler() {
#Override
public void handleMessage(Message msg) {
displaySearchResults(search);
pd.dismiss();
}
};
}
I am giving you a solution for it,
try this...
First define the Progress Dialog in the Activity before onCreate() method
private ProgressDialog progressDialog;
Now in the onCreate method you might have the Any button click on which you will change the Activity on any action. Just set the Progress Bar there.
progressDialog = ProgressDialog.show(FoodDriveModule.this, "", "Loading...");
Now use thread to handle the Progress Bar to Display and hide
new Thread()
{
public void run()
{
try
{
sleep(1500);
// do the background process or any work that takes time to see progress dialog
}
catch (Exception e)
{
Log.e("tag",e.getMessage());
}
// dismiss the progress dialog
progressDialog.dismiss();
}
}.start();
That is all!
Progress Dialog doesn't show because you have to use a separated thread. The best practices in Android is to use AsyncTask ( highly recommended ).
See also this answer.
This is also possible by using AsyncTask. This class creates a thread for you. You should subclass it and fill in the doInBackground(...) method.