ActionIconButton.java

package org.getlantern.firetweet.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.PorterDuff.Mode;
import android.util.AttributeSet;
import android.widget.ImageButton;

/**
 * Created by mariotaku on 14/11/5.
 */
public class ActionIconButton extends ImageButton {

    private final int mDefaultColor;

    public ActionIconButton(Context context) {
        this(context, null);
    }

    public ActionIconButton(Context context, AttributeSet attrs) {
        this(context, attrs, android.R.attr.imageButtonStyle);
    }

    public ActionIconButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        final TypedArray a = context.obtainStyledAttributes(attrs, new int[]{android.R.attr.color,
                android.R.attr.colorForeground});
        if (a.hasValue(0)) {
            mDefaultColor = a.getColor(0, 0);
        } else {
            mDefaultColor = a.getColor(1, 0);
        }
        setColorFilter(mDefaultColor, Mode.SRC_ATOP);
        a.recycle();
    }

    public int getDefaultColor() {
        return mDefaultColor;
    }
}