Tinted Progress Bar

TintedProgressBar.java

/***
This progressbar is tinted with the accent color of an application
set a color filter to the progressbar drawable
so change the color of the progressbar in pre-lollipop versions
**/

package com.urbanity.wallet.ui.components;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.PorterDuff;
import android.os.Build;
import android.support.annotation.ColorInt;
import android.support.v4.content.ContextCompat;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.ProgressBar;

import com.urbanity.wallet.R;

public class TintedProgressBar extends ProgressBar {

    public TintedProgressBar(Context context) {
        super(context);
        init();
    }

    public TintedProgressBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public TintedProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public TintedProgressBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init();
    }

    public void init(){

        int accentColor;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            accentColor = android.R.attr.colorAccent;
        } else {
            accentColor = R.attr.colorAccent;
        }

        this.getIndeterminateDrawable().mutate()
                .setColorFilter(resolveColor(accentColor),
                        PorterDuff.Mode.SRC_ATOP);
    }

    /**
     * Resolve a color data from an attribute
     * @param attr Attribute color to resolve
     * @return int resolved color.
     */
    @ColorInt
    private int resolveColor(int attr) {
        TypedValue a = new TypedValue();
        getContext().getTheme().resolveAttribute(attr, a, true);
        return a.data;
    }
}