Android带进度的圆形进度条

<?xml version="1.0" encoding="UTF-8"?> 
<resources> 
 <declare-styleable name="RoundProgressBar"> 
  <attr name="roundColor" format="color"/> 
  <attr name="roundProgressColor" format="color"/> 
  <attr name="roundWidth" format="dimension"></attr> 
  <attr name="textColor" format="color" /> 
  <attr name="textSize" format="dimension" /> 
  <attr name="max" format="integer"></attr> 
  <attr name="textIsDisplayable" format="boolean"></attr> 
  <attr name="style"> 
   <enum name="STROKE" value="0"></enum> 
   <enum name="FILL" value="1"></enum> 
  </attr> 
 </declare-styleable> 
</resources> 

roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.RED); 
  roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN); 
  textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN); 
  textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15); 
  roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5); 
  max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100); 
  textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true); 
  style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0); 

package com.example.roundprogressbar; 
 
import android.content.Context; 
import android.content.res.TypedArray; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.RectF; 
import android.graphics.Typeface; 
import android.util.AttributeSet; 
import android.util.Log; 
import android.view.View; 
 
import com.example.circlepregress.R; 
 
/** 
 * 仿iphone带进度的进度条，线程安全的View，可直接在线程中更新进度 
 * @author xiaanming 
 * 
 */ 
public class RoundProgressBar extends View { 
 /** 
  * 画笔对象的引用 
  */ 
 private Paint paint; 
  
 /** 
  * 圆环的颜色 
  */ 
 private int roundColor; 
  
 /** 
  * 圆环进度的颜色 
  */ 
 private int roundProgressColor; 
  
 /** 
  * 中间进度百分比的字符串的颜色 
  */ 
 private int textColor; 
  
 /** 
  * 中间进度百分比的字符串的字体 
  */ 
 private float textSize; 
  
 /** 
  * 圆环的宽度 
  */ 
 private float roundWidth; 
  
 /** 
  * 最大进度 
  */ 
 private int max; 
  
 /** 
  * 当前进度 
  */ 
 private int progress; 
 /** 
  * 是否显示中间的进度 
  */ 
 private boolean textIsDisplayable; 
  
 /** 
  * 进度的风格，实心或者空心 
  */ 
 private int style; 
  
 public static final int STROKE = 0; 
 public static final int FILL = 1; 
  
 public RoundProgressBar(Context context) { 
  this(context, null); 
 } 
 
 public RoundProgressBar(Context context, AttributeSet attrs) { 
  this(context, attrs, 0); 
 } 
  
 public RoundProgressBar(Context context, AttributeSet attrs, int defStyle) { 
  super(context, attrs, defStyle); 
   
  paint = new Paint(); 
 
   
  TypedArray mTypedArray = context.obtainStyledAttributes(attrs, 
    R.styleable.RoundProgressBar); 
   
  //获取自定义属性和默认值 
  roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.RED); 
  roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN); 
  textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN); 
  textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15); 
  roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5); 
  max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100); 
  textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true); 
  style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0); 
   
  mTypedArray.recycle(); 
 } 
  
 
 @Override 
 protected void onDraw(Canvas canvas) { 
  super.onDraw(canvas); 
   
  /** 
   * 画最外层的大圆环 
   */ 
  int centre = getWidth()/2; //获取圆心的x坐标 
  int radius = (int) (centre - roundWidth/2); //圆环的半径 
  paint.setColor(roundColor); //设置圆环的颜色 
  paint.setStyle(Paint.Style.STROKE); //设置空心 
  paint.setStrokeWidth(roundWidth); //设置圆环的宽度 
  paint.setAntiAlias(true); //消除锯齿 
  canvas.drawCircle(centre, centre, radius, paint); //画出圆环 
   
  Log.e("log", centre + ""); 
   
  /** 
   * 画进度百分比 
   */ 
  paint.setStrokeWidth(0); 
  paint.setColor(textColor); 
  paint.setTextSize(textSize); 
  paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体 
  int percent = (int)(((float)progress / (float)max) * 100); //中间的进度百分比，先转换成float在进行除法运算，不然都为0 
  float textWidth = paint.measureText(percent + "%"); //测量字体宽度，我们需要根据字体的宽度设置在圆环中间 
   
  if(textIsDisplayable && percent != 0 && style == STROKE){ 
   canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比 
  } 
   
   
  /** 
   * 画圆弧 ，画圆环的进度 
   */ 
   
  //设置进度是实心还是空心 
  paint.setStrokeWidth(roundWidth); //设置圆环的宽度 
  paint.setColor(roundProgressColor); //设置进度的颜色 
  RectF oval = new RectF(centre - radius, centre - radius, centre 
    + radius, centre + radius); //用于定义的圆弧的形状和大小的界限 
   
  switch (style) { 
  case STROKE:{ 
   paint.setStyle(Paint.Style.STROKE); 
   canvas.drawArc(oval, 0, 360 * progress / max, false, paint); //根据进度画圆弧 
   break; 
  } 
  case FILL:{ 
   paint.setStyle(Paint.Style.FILL_AND_STROKE); 
   if(progress !=0) 
    canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧 
   break; 
  } 
  } 
   
 } 
  
  
 public synchronized int getMax() { 
  return max; 
 } 
 
 /** 
  * 设置进度的最大值 
  * @param max 
  */ 
 public synchronized void setMax(int max) { 
  if(max < 0){ 
   throw new IllegalArgumentException("max not less than 0"); 
  } 
  this.max = max; 
 } 
 
 /** 
  * 获取进度.需要同步 
  * @return 
  */ 
 public synchronized int getProgress() { 
  return progress; 
 } 
 
 /** 
  * 设置进度，此为线程安全控件，由于考虑多线的问题，需要同步 
  * 刷新界面调用postInvalidate()能在非UI线程刷新 
  * @param progress 
  */ 
 public synchronized void setProgress(int progress) { 
  if(progress < 0){ 
   throw new IllegalArgumentException("progress not less than 0"); 
  } 
  if(progress > max){ 
   progress = max; 
  } 
  if(progress <= max){ 
   this.progress = progress; 
   postInvalidate(); 
  } 
   
 } 
  
  
 public int getCricleColor() { 
  return roundColor; 
 } 
 
 public void setCricleColor(int cricleColor) { 
  this.roundColor = cricleColor; 
 } 
 
 public int getCricleProgressColor() { 
  return roundProgressColor; 
 } 
 
 public void setCricleProgressColor(int cricleProgressColor) { 
  this.roundProgressColor = cricleProgressColor; 
 } 
 
 public int getTextColor() { 
  return textColor; 
 } 
 
 public void setTextColor(int textColor) { 
  this.textColor = textColor; 
 } 
 
 public float getTextSize() { 
  return textSize; 
 } 
 
 public void setTextSize(float textSize) { 
  this.textSize = textSize; 
 } 
 
 public float getRoundWidth() { 
  return roundWidth; 
 } 
 
 public void setRoundWidth(float roundWidth) { 
  this.roundWidth = roundWidth; 
 } 
 
 
 
} 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:android_custom="http://schemas.android.com/apk/res/com.example.circlepregress" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" > 
 
 
 <com.example.roundprogressbar.RoundProgressBar 
  android:id="@+id/roundProgressBar2" 
  android:layout_width="80dip" 
  android:layout_height="80dip" 
  android:layout_alignLeft="@+id/roundProgressBar1" 
  android:layout_alignParentBottom="true" 
  android:layout_marginBottom="78dp" 
   
   
  android_custom:roundColor="#D1D1D1" 
  android_custom:roundProgressColor="@android:color/black" 
  android_custom:textColor="#9A32CD" 
  android_custom:textIsDisplayable="false" 
  android_custom:roundWidth="10dip" 
  android_custom:textSize="18sp"/> 
</RelativeLayout>