CODEWITHSUNDEEP
androidandroid-alertdialog
Bart Friederichs
Bart Friederichs

Reputation: 33521

Change the NegativeButton's text in an AlertDialog.Builder

I have subclassed AlertDialog.Builder to create my own customised dialog. In that dialog I added a CheckBox. What I want is to change the text of the NegativeButton from Cancel to something else, when the CheckBox is checked:

myCheckbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {           
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        if (isChecked) {
            // change text of negative button
        }
    }
});

How should I do that?

I have tried to get a reference to the button using

Button btnNegative = (Button)dlgView.findViewById(android.R.id.button1);

but that returns null.

Upvotes: 0

Views: 123

Answers (2)

Bart Friederichs
Bart Friederichs

Reputation: 33521

I was able to get an instance of the created AlertDialog, and use its buttons like this:

class MyBuilder extends AlertDialog.Builder {
    AlertDialog myDialog;

    @Override
    public AlertDialog show() {
        myDialog = super.show();

        return myDialog;
    }

    public MyBuilder(Activity act) {
        CheckBox cb = ... ;
        cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {           
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Button btnNegative = myDialog.getButton(AlertDialog.BUTTON_NEGATIVE);
            }
        });
    }
}

Upvotes: 0

Viswanath Lekshmanan
Viswanath Lekshmanan

Reputation: 10083

UPDATE

Calling findViewById() will search for views within your Activity's layout and not your dialog's view. You need to call findViewById() on the specific View that you set as your dialog's layout.

View dialogView = inflater.inflate(R.layout.search_dialog, null);
searchDialog.setView(dialogView);
EditText tagText = (EdiText) dialogView.findViewById(R.id.tagField); 
searchDialog.setPositiveButton( ... ) ...
AlertDialog myAlert = searchDialog.create(); //returns an AlertDialog from a Builder.
myAlert.show();

Try this may be useful read from a blog , may be useful

AlertDialog dialog = your_builder.create();

Button b = dialog.getButton(DialogInterface.BUTTON_NEGATIVE);

Upvotes: 1

Related Questions