android - Using a background drawable selector on custom button -

i extending "button" create custom button adding functionality -- , currently, background drawable not changing on touch. here sample code shows doing:

/src/custombutton.java

public class custombutton extends button {      public custombutton(final context context) {         this(context, null);     }      public custombutton(final context context, final attributeset attrs) {         this(context, attrs, 0);     }      public custombutton(final context context, final attributeset attrs,             final int defstyle) {          super(context, attrs, defstyle);      }  } 

/res/layout/myview.xml

<com.blah.controls.custombutton             android:layout_width="0dp"              android:layout_height="match_parent"             android:layout_weight="1"             android:background="@drawable/b_gradient_states"             android:text="button" /> 

/res/drawable/b_gradient_states

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android">     <item         android:drawable="@drawable/b_gradient_pressed"         android:state_pressed="true" />     <item         android:drawable="@drawable/b_gradient"         android:state_pressed="false" />  </selector> 

** note **if change

<com.blah.controls.custombutton...

to

<button...

the touch states work expected...

pskink said in comment in question:

why in ctor(contexr) call super(context, null) , in ctor(context, attributeset) use super(context, attributeset, int)

and that's wrong...

public custombutton(final context context, final attributeset attrs) {         this(context, attrs, 0);     } 

should be:

public custombutton(final context context, final attributeset attrs) {         super(context, attrs);     }