Um, unless I'm missing something...
You can't use the same button because presumably the button to launch
the long-running operation is not in the dialog, it's in the activity
- and dialogs prevent interaction with activity UI elements while
displayed.
What you can do is one of:
1) Build your own dialog with a cancel button;
2) Use Dialog.setOnCancelListener which gets called if the user
presses the Back key; here the dialog is dismissed automatically;
3) Set a key listener in the dialog and check for when the back key is
pressed, something like:
mProgressDialog = new ProgressDialog(mActivity);
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.setMax(item.fetch_decoded_size / 1024);
mProgressDialog.setTitle(R.string.attachment_dialog_title);
mProgressDialog.setCancelable(false);
mProgressDialog.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog,
int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK &&
event.getAction() ==
KeyEvent.ACTION_UP
&&
event.getRepeatCount() == 0) {
cancelDownload();
return true;
}
return false;
}
});
In this code, canceling the operation can take some time, so I made
the dialog non-cancelable to be able display "Canceling...".
-- Kostya
20 декабря 2011 г. 15:32 пользователь B.Arunkumar
<[email protected]> написал:
> Hi,
>
> This can be done. What I want is a way to use the same button for
> showing the progressdialog and later cancelling it. Probably I should
> go in for some animated imagview instead of progressdialog for my
> requirement, I guess.
>
> Thank you,
> B.Arunkumar
>
> On Dec 20, 3:58 pm, srihari babu <[email protected]> wrote:
>> build custom progress dialog, which is a combination of progress bar and a
>> button.
>>
>> Regards,
>> Srihari
>
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