Custom Checkable View which responds to Selector

Question

I have a group of FrameLayout which I want to be checkable/selectable,

That is, after a click I would like the FrameLayout to display as checked - when pressed again I would like it to become unchecked. What's more, I want this visual que to be described as usual through though the use of a <selector>.

I can't seem to get this working - I'm not sure what I'm missing:

public class CheckableFrameLayout extends FrameLayout implements Checkable {     private boolean mChecked = false;     public CheckableFrameLayout(Context context, AttributeSet attrs) {         super(context, attrs);     }      @Override     public void setChecked(boolean checked) {         mChecked = checked;         refreshDrawableState();     }      public boolean isChecked() {         return mChecked;     }      public void toggle() {         setChecked(!mChecked);     } } 

The layout of the CheckableFrameLayout:

<com.test.view.CheckableFrameLayout     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="@drawable/selector_horizontal"     android:clickable="true" > 

The selector backing it (selector_horizontal.xml):

<item android:drawable="@drawable/selector_vertical_selected" android:state_pressed="false" android:state_checked="true"/>   <item android:drawable="@drawable/selector_vertical_pressed" android:state_pressed="true" android:state_checked="false"/> <item android:drawable="@drawable/selector_vertical_normal" android:state_pressed="false" android:state_checked="false"/> 

Using the above code the "state_pressed" is working fine, but the View itself is not becoming checked (not is the Checkable code being called as discovered through debug).

Answer 1

Adding the following code to a Checkable class allows Selectors to work:

private static final int[] CheckedStateSet = {     android.R.attr.state_checked, };  @Override protected int[] onCreateDrawableState(int extraSpace) {     final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);     if (isChecked()) {         mergeDrawableStates(drawableState, CheckedStateSet);     }     return drawableState; }  @Override public boolean performClick() {     toggle();     return super.performClick(); }