自定义圆环进度条

package com.example.carlos.myapplication;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.view.View;
/**
* Created by carlos on 2015/10/24.
*/
public class CustomView extends View {
private Paint mPaintBackCircle;
private Paint mPaintFrontCircle;
private Paint mPaintText;
private float mStrokeWith =50;
private float mHalfStrokeWith = mStrokeWith/2;
private float mX = 200 + mHalfStrokeWith;
private float mY = 200 + mHalfStrokeWith;
private float mRadius = 200;
private RectF mRectF;
private int mProgess;
public CustomView(Context context) {
super(context);
init();
}
public CustomView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public CustomView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init(){
mPaintBackCircle = new Paint();
mPaintBackCircle.setColor(Color.BLUE);
mPaintBackCircle.setAntiAlias(true);
mPaintBackCircle.setStyle(Paint.Style.STROKE);
mPaintBackCircle.setStrokeWidth(mStrokeWith);
mPaintFrontCircle = new Paint();
mPaintFrontCircle.setColor(Color.YELLOW);
mPaintFrontCircle.setAntiAlias(true);
mPaintFrontCircle.setStyle(Paint.Style.STROKE);
mPaintFrontCircle.setStrokeWidth(mStrokeWith);
mPaintText = new Paint();
mPaintText.setColor(Color.RED);
mPaintText.setAntiAlias(true);
mPaintText.setTextSize(50);
mPaintText.setTextAlign(Paint.Align.CENTER);
mRectF = new RectF(mHalfStrokeWith,mHalfStrokeWith,mRadius*2 + mHalfStrokeWith,mRadius*2 + mHalfStrokeWith);
mProgess =75;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawCircle(mX, mY, mRadius, mPaintBackCircle);
canvas.drawArc(mRectF,0,270,false,mPaintFrontCircle);
canvas.drawText(mProgess+"%",mX,mY,mPaintText);
}
}