StatefulImageButton.java

package com.isobar.operationlife.ui;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageButton;

import com.isobar.operationlife.R;

/**
 * Created by anitasantoso on 18/07/2014.
 */
public class StatefulImageButton extends ImageButton {

    Drawable disabledSrc;
    Drawable enabledSrc;

    public StatefulImageButton(final Context context) {
        this(context, null);
    }

    public StatefulImageButton(final Context context, final AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public StatefulImageButton(final Context context, final AttributeSet attrs, final int defStyle) {
        super(context, attrs, defStyle);

        final TypedArray a = getContext().obtainStyledAttributes(
                attrs, R.styleable.StateImageButton, defStyle, 0);

        disabledSrc = a.getDrawable(R.styleable.StateImageButton_disabledSrc);
        enabledSrc = a.getDrawable(R.styleable.StateImageButton_enabledSrc);
        if(enabledSrc == null) {
            enabledSrc = getDrawable();
        }
        a.recycle();
    }

    /**
     * Set disabled drawable if specified
     * @param enabled
     */
    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);
        setImageDrawable(isEnabled()? enabledSrc : (disabledSrc != null? disabledSrc : enabledSrc));
    }
}