GoogleProgressBar.java

package com.appassit.widget.googleprogress;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ProgressBar;

import com.appassit.R;

public class GoogleProgressBar extends ProgressBar {

	private enum ProgressType {
		FOLDING_CIRCLES, GOOGLE_MUSIC_DICES, NEXUS_ROTATION_CROSS
	}

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

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

	public GoogleProgressBar(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.GoogleProgressBar, defStyle, 0);
		final int typeIndex = a.getInteger(R.styleable.GoogleProgressBar_type, context.getResources().getInteger(R.integer.default_type));
		final int colorsId = a.getResourceId(R.styleable.GoogleProgressBar_colors, R.array.google_colors);
		a.recycle();

		Drawable drawable = buildDrawable(context, typeIndex, colorsId);
		if (drawable != null)
			setIndeterminateDrawable(drawable);
	}

	private Drawable buildDrawable(Context context, int typeIndex, int colorsId) {
		Drawable drawable = null;
		ProgressType type = ProgressType.values()[typeIndex];
		switch (type) {
		case FOLDING_CIRCLES:
			drawable = new FoldingCirclesDrawable.Builder(context).colors(getResources().getIntArray(colorsId)).build();
			break;
		case GOOGLE_MUSIC_DICES:
			drawable = new GoogleMusicDicesDrawable.Builder().build();
			break;
		case NEXUS_ROTATION_CROSS:
			drawable = new NexusRotationCrossDrawable.Builder(context).colors(getResources().getIntArray(colorsId)).build();
		}

		return drawable;
	}
}