alertDialog.getButton() method gives null pointer exception android

Question

Iam planing to give create 3 buttons with layout_weight=1, not interested in custom dialog.So I have written below code.It is not working.Always yes button gives me null. Wh

Answer 1

Thanks wieux. But for new developers understanding purpose I am re-writing code below

AlertDialog dialog= new AlertDialog.Builder(this).create();             
dialog.setIcon(R.drawable.alert_icon);             
dialog.setTitle("title");            
dialog.setMessage("Message");             
dialog.setButton(AlertDialog.BUTTON_POSITIVE,"Yes", new DialogInterface.OnClickListener() {                 
    @Override                 
    public void onClick(DialogInterface arg0, int arg1) {                                                
    }             
}); 
dialog.show(); 
Button yesButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);             
Log.w("Button",""+yesButton); //here getting null             
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 1f);             
yesButton.setLayoutParams(layoutParams);