自定义MaterialProgressBarSupport

package com.ybzf.mobile.pharmacist.views;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;

import com.ybzf.mobile.pharmacist.R;

/**
* Created on 15/08/01
*/
public class MaterialProgressBarSupport extends ViewGroup {
// Default background for the progress spinner
private static final int CIRCLE_BG_LIGHT = 0xFFFAFAFA;
private static final int CIRCLE_LIGHT = Color.BLACK;
// Default offset in dips from the top of the view to where the progress spinner should stop
private static final int DEFAULT_CIRCLE_TARGET = 64;
private static final int CIRCLE_DIAMETER = 40;
private static final int CIRCLE_DIAMETER_LARGE = 56;
private static final int MAX_ALPHA = 255;
private MaterialProgressDrawableSupport mProgress;
private CircleImageViewSupport mCircleView;

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

public MaterialProgressBarSupport(Context context, AttributeSet attrs) {
super(context, attrs);
createProgressView(attrs);
}

private void createProgressView(AttributeSet attrs) {
int progressSize = CIRCLE_DIAMETER;
int bgColor = CIRCLE_BG_LIGHT;
int progressColor = CIRCLE_LIGHT;

final TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MaterialProgressBarSupport);
if (a.hasValue(R.styleable.MaterialProgressBarSupport_progressSmallSize)) {
boolean isSmallSize = a.getBoolean(R.styleable.MaterialProgressBarSupport_progressSmallSize, true);
progressSize = isSmallSize ? CIRCLE_DIAMETER : CIRCLE_DIAMETER_LARGE;
}
if (a.hasValue(R.styleable.MaterialProgressBarSupport_progressBackgroundColor)) {
bgColor = a.getColor(R.styleable.MaterialProgressBarSupport_progressBackgroundColor, CIRCLE_BG_LIGHT);
}

if (a.hasValue(R.styleable.MaterialProgressBarSupport_progressColor)) {
progressColor = a.getColor(R.styleable.MaterialProgressBarSupport_progressColor, CIRCLE_LIGHT);
}
//TypedArray使用完回收
a.recycle();

mCircleView = new CircleImageViewSupport(getContext(), bgColor, progressSize / 2);
mProgress = new MaterialProgressDrawableSupport(getContext(), this);
mProgress.setColorSchemeColors(progressColor);
mCircleView.setImageDrawable(mProgress);
addView(mCircleView);
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
mCircleView.layout(l, t, r, b);
}

public void startProgress(){
mCircleView.setVisibility(View.VISIBLE);
mProgress.setAlpha(MAX_ALPHA);
mProgress.start();
}
public void stopProgress(){
mCircleView.setVisibility(View.GONE);
mProgress.stop();
}
}