The view you're trying to get the text from resides in the dialog, not the
activity layout.
In your click listener, call findViewByID on the dialog you get in the
arguments, not the activity itself.
Something like this.
// ... snip ...
public void onClick(DialogInterface dialog, int whichButton)
{
AlertDialog ad = (AlertDialog) dialog;
EditText valueText = (EditText) ad.findViewById(R.id.viewText);
getvalue(valueText );
}
})
-------------------------------------------------------------------------------------------------
TreKing - Chicago transit tracking app for Android-powered devices
http://sites.google.com/site/rezmobileapps/treking
On Thu, Jan 7, 2010 at 10:27 PM, mapper <[email protected]> wrote:
> Hi Treking,
> I have tried as you have suggested but not able to get the value.
> May be i missing something.
> Here is my code:
>
>
> public class GetDialog extends Activity
> {
>
>
> public void onCreate(Bundle savedInstanceState)
> {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
>
> Button valueButton = (Button) findViewById(R.id.viewButton);
> valueButton.setOnClickListener(new OnClickListener() {
> public void onClick(View v) {
> showDialog(0);
> }
> });
>
> }
>
> protected Dialog onCreateDialog(int id) {
>
> LayoutInflater factory = LayoutInflater.from(this);
> final View textEntryView = factory.inflate
> (R.layout.viewlayout, null);
>
> return new AlertDialog.Builder(this)
> .setIcon(R.drawable.view)
> .setTitle("Enter Value")
> .setView(textEntryView)
> .setPositiveButton("OK", new
> DialogInterface.OnClickListener() {
> public void onClick(DialogInterface dialog, int
> whichButton) {
> EditText valueText = (EditText) findViewById
> (R.id.viewText);
> getvalue(valueText );
> }
> })
> .setNegativeButton("Cancel", new
> DialogInterface.OnClickListener() {
> public void onClick(DialogInterface dialog, int
> whichButton) {
>
> }
> })
> .create();
>
> }
>
> void getvalue(EditText val)
> {
> try{
> String value= val.getText().toString();
> Log.i("Value ",value);
> }catch(Exception e){
> Log.i("Error", e.toString() );
> }
> }
>
> }
>
> It gives me error as: Java.lang.NullPointerException
>
> please suggest.
>
> Thanks
>
>
>
> On Jan 5, 11:45 pm, TreKing <[email protected]> wrote:
> > Another (simpler) option:
> > - Add a click listener to you dialog
> > - When it fires, get the EditText from the dialog (it's passed in as a
> > parameter to the listener)
> > - Get the text from the EditText object and pass it to the TextView
> (which I
> > assume you have / can get a reference to) since it's in the same
> actitivty
> > - Profit
> >
> >
> -------------------------------------------------------------------------------------------------
> > TreKing - Chicago transit tracking app for Android-powered deviceshttp://
> sites.google.com/site/rezmobileapps/treking
> >
> > On Tue, Jan 5, 2010 at 1:10 AM, Lenea <[email protected]> wrote:
> > > I've got it done. I just created a new class and set the Theme to
> > > @android:style/Theme.Dialog, then i created an intent and called
> > > startActivityForResult() and
> > > passed the parameters through Bundle. hope this helps others with the
> > > same problem as me
> >
> > > Cheers,
> > > Lenea
> >
> > > On Jan 5, 8:48 am, Kevin Duffey <[email protected]> wrote:
> > > > If the dialog you open is to return a value, I forget the call..
> still
> > > > learning myself.. I think it's like onWaitForDialog or something. You
> can
> > > > have it return a response to the activity that displayed it, which
> would
> > > > probably be the same activity you want to update the textview with.
> Just
> > > > update the textview, possibly in a thread to update the UI with the
> > > > response.
> >
> > > > On Mon, Jan 4, 2010 at 10:29 PM, Justin Anderson <
> > > [email protected]>wrote:
> >
> > > > > There are several methods available for dealing with dialogs within
> an
> > > > > activity... Have a look at onCreateDialog(), onPrepareDialog(),
> > > > > showDialog(), and removeDialog():
> >
> > > > >
> http://developer.android.com/reference/android/app/Activity.html#onCr.
> > > ..
> >
> > > > > Thanks,
> > > > > Justin
> >
> > > > >
> ----------------------------------------------------------------------
> > > > > There are only 10 types of people in the world...
> > > > > Those who know binary and those who don't.
> > > > >
> ----------------------------------------------------------------------
> >
> > > > > On Sat, Jan 2, 2010 at 6:55 AM, Lenea <[email protected]> wrote:
> >
> > > > >> Hello, everyone.
> > > > >> I've got an application in which a button triggers a custom
> dialog.
> > > > >> In the custom dialog i have an EditText.
> > > > >> I want to collect data from the EditText and set the text of a
> > > > >> TextView to that data.
> > > > >> The problem is, the TextView is located in my main Activity(the
> one
> > > > >> which triggered the custom dialog)
> > > > >> How do I do that?
> >
> > > > >> Cheers,
> > > > >> Lenea
> >
> > > > >> --
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