android实现节点进度条效果

package utils.android.view.lxz; 
 
import java.util.ArrayList; 
import java.util.List; 
import com.community.custom.android.R; 
 
import android.app.Activity; 
import android.content.Context; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.drawable.BitmapDrawable; 
import android.graphics.drawable.Drawable; 
import android.graphics.drawable.ShapeDrawable; 
import android.graphics.drawable.shapes.OvalShape; 
import android.util.AttributeSet; 
import android.util.DisplayMetrics; 
import android.util.Log; 
import android.view.View; 
 
/** 
 * 2015-1-24 
 * 小林爱 
 * */ 
public class NodeProgressBar extends View implements Runnable { 
 
 private float dn=1f; 
 DisplayMetrics metrics; 
 { 
 metrics=new DisplayMetrics(); 
 ((Activity) getContext()).getWindowManager().getDefaultDisplay().getMetrics(metrics); 
 dn=1*3/metrics.density; 
 } 
 /**读取空进度条图片*/ 
 private BitmapDrawable db_empty; 
 /**View宽度*/ 
 private int viewWidth; 
 /**View高度*/ 
 private int viewHeight; 
 /** 
 * 白色空心圆图片集合 
 * */ 
 private List<BitmapDrawable> list_whitecircle ; 
 /** 
 * 蓝色实心圆图片集合 
 * */ 
 private List<BitmapDrawable> list_bluecircle ; 
 /**蓝色进度条*/ 
 private BitmapDrawable db_blue; 
 
 /**进度比值 控制蓝色进度条*/ 
 private double ratio = 0; 
 /**节点名称*/ 
 private String[] textArr=new String[]{"等待服务","服务中","等待评价","成功"}; 
 /**节点数*/ 
 private int count=textArr.length;; 
 /**当前节点进度*/ 
 private int index = 0; 
 /**X轴对称 偏移值*/ 
 private int offX=(int) (50/dn); 
 /**Y轴 偏移值*/ 
 private int offY=(int) (70/dn); 
 /**文字与节点 偏移值*/ 
 private int offTextY=(int) (65/dn); 
 /**白色空心圆偏移值*/ 
 private int offWhiteCirle_y=(int) (-3/dn); 
 /**白色空心进度条偏移值*/ 
 private int offWhiteRect_y=(int) (-2/dn); 
 /**白色空心进度条偏移值*/ 
 private BitmapDrawable db_blue_half_circle; 
 /**创建一只新画笔*/ 
 private Paint paint = new Paint(); 
 /**白色空心圆半径*/ 
 private int r_white = (int) (76/dn); 
 /**蓝色空心圆半径*/ 
 private int r_blue = (int) (56/dn); 
 /**白色进度条高度*/ 
 private int whiteProgressHeight = (int) (30/dn); 
 /**蓝色进度条高度*/ 
 private int blueProgressHeight = (int) (16/dn); 
 
 /**文本颜色j*/ 
 private String textColor="#46A3FF"; 
 /**文本未激活颜色*/ 
 private String textColorNotEnabled="#7E7E81"; 
// /**View 背景颜色*/ 
// private String bgColor="#e0000000"; 
 /**文本框大小*/ 
 private int textSize=(int) (32/dn); 
 
 /**白色空心进度条宽度*/ 
 private int maxProgressWidth; 
 /**半圆蓝色进度条宽度*/ 
 private int half_blueWidth = (int) (12/dn); 
 
 
 
 public String[] getTextArr() { 
 return textArr; 
 } 
 
 public void setTextArr(String[] textArr) { 
 this.textArr = textArr; 
 count=textArr.length;; 
 init(); 
 this.post(new Runnable() { 
 
 @Override 
 public void run() { 
 //读取View宽度 
 viewWidth = NodeProgressBar.this.getWidth(); 
 //读取View高度 
 viewHeight = NodeProgressBar.this.getHeight(); 
 // 进度条宽度计算 
 maxProgressWidth = viewWidth - r_white-offX*2; 
 //绘制 
 
 invalidate(); 
 } 
 }); 
 
 } 
 
 @SuppressWarnings("deprecation") 
 public NodeProgressBar(Context context) { 
 super(context); 
 init(); 
 } 
 
 public NodeProgressBar(Context context, AttributeSet attrs) { 
 super(context, attrs); 
 init(); 
 } 
 /**控制蓝色进度条*/ 
 public void setProgressOnly(int i) { 
 ratio = i / 100d; 
 invalidate(); 
 } 
 
 /**以节点数来空值进度条 至少大于1*/ 
 public void setProgressByNode(final double d) 
 { 
 this.post(new Runnable() { 
 
 @Override 
 public void run() { 
 // TODO Auto-generated method stub 
 int progress; 
 if(d==1) 
 { 
  progress=1; 
 }else 
 { 
  progress= (int) ( (100d/((count-1)*1.0d))*(d-1)); 
 } 
 setProgressAndIndex(progress); 
  
 } 
 }); 
 } 
 
 
 /**控制蓝色进度条并且对节点染色*/ 
 public void setProgressAndIndex(int i){ 
 if(i==0){ 
 index=0; 
 ratio=0; 
 invalidate(); 
 return ; 
 } 
 //获得相对进度条长度 
 int adbProgress = maxProgressWidth-(count-1)*r_white; 
 //得到每一个节点所需进度值 
 int k=100/(count-1); 
 //计算当前进度需要染色的节点个数 
 index=1+i/k; 
 if(index!=count) 
 { 
 //获得节点磁力比率 
 double wh=1.0d*(r_white/2)/(double)maxProgressWidth; 
 //计算蓝色进度条和染色节点宽度 
 ratio=i%100==0?ratio=1:wh+wh*2*(index-1)+1.0d*((double)adbProgress/(double)maxProgressWidth)*(i/100d); 
 }else 
 { 
 //设置进度条为满 
 ratio=1; 
 } 
 invalidate(); 
 } 
 
 /** 
 * 初始化图片资源，和基础数值 
 * */ 
 @SuppressWarnings("deprecation") 
 private void init() { 
 metrics=new DisplayMetrics(); 
 ((Activity) getContext()).getWindowManager().getDefaultDisplay().getMetrics(metrics); 
 Log.d("lxz", ""+metrics.density); 
 dn=1*3/metrics.density; 
 list_whitecircle=new ArrayList<BitmapDrawable>(); 
 list_bluecircle=new ArrayList<BitmapDrawable>(); 
 //根据节点个数 初始化空心圆和实心圆 
 for (int i = 0; i < count; i++) { 
 BitmapDrawable drawable1 = new BitmapDrawable( 
  BitmapFactory.decodeResource(getResources(), 
  R.drawable.progress_white_circle)); 
 list_whitecircle.add(drawable1); 
 BitmapDrawable drawable2 = new BitmapDrawable( 
  BitmapFactory.decodeResource(getResources(), 
  R.drawable.progress_blue_circle)); 
 list_bluecircle.add(drawable2); 
 } 
 //初始化蓝色小半圆 
 db_blue_half_circle = new BitmapDrawable(BitmapFactory.decodeResource( 
 getResources(), R.drawable.progress_blue_half_circle)); 
 //初始化空心进度条 
 db_empty = new BitmapDrawable(BitmapFactory.decodeResource( 
 getResources(), R.drawable.progress_whtie_groove)); 
 //初始化 
 db_blue = new BitmapDrawable(BitmapFactory.decodeResource( 
 getResources(), R.drawable.progress_blue_groove)); 
 //UI线程初始化数值 
 this.post(this); 
 } 
 @Override 
 public void run() { 
 //读取View宽度 
 viewWidth = NodeProgressBar.this.getWidth(); 
 //读取View高度 
 viewHeight = NodeProgressBar.this.getHeight(); 
 // 进度条宽度计算 
 maxProgressWidth = viewWidth - r_white-offX*2; 
 //绘制 
 invalidate(); 
 } 
 
 
 @Override 
 public void draw(Canvas canvas) { 
 // TODO Auto-generated method stub 
 super.draw(canvas); 
 //获得X轴偏转值 
 int offAbs_x=(int)((viewWidth-maxProgressWidth)/2.0d); 
 //获得X轴偏转值 
// canvas.drawColor(Color.parseColor(bgColor)); 
 canvas.drawColor(Color.TRANSPARENT); 
 //绘制空心进度条 
 drawRect(canvas, db_empty, viewWidth / 2, r_white / 2+offY+offWhiteRect_y, maxProgressWidth,whiteProgressHeight); 
 
 paint.setTextSize(textSize); 
 paint.setFakeBoldText(true); 
 
 //绘制白色空心园 
 for (int i = 0, j = list_whitecircle.size(); i < j; i++) { 
 BitmapDrawable db_whitecircle = list_whitecircle.get(i); 
 int x=maxProgressWidth / (count - 1)* i+offAbs_x; 
 int y=r_white/2 + offWhiteCirle_y+offY; 
 drawCircle(canvas, db_whitecircle,x, y, r_white); 
  
 String str=textArr[i]; 
 if(i<index) 
 { 
  paint.setColor(Color.parseColor(textColor)); 
 }else 
 { 
  paint.setColor(Color.parseColor(textColorNotEnabled)); 
 } 
 float textWidht = paint.measureText(str); 
 canvas.drawText(str, x-textWidht/2, y+offTextY, paint); 
 } 
 
 //绘制蓝色进度条 
 drawRect(canvas, db_blue, (int) 
  ((maxProgressWidth * ratio) / 2)+offAbs_x , 
  r_white / 2+offY, 
  (int) (maxProgressWidth * ratio),blueProgressHeight); 
 
 //绘制蓝色小半圆 
 if (ratio > 0) { 
 
 drawRect(canvas, db_blue_half_circle,(int) ((maxProgressWidth * ratio) / 2) 
  + (int) (maxProgressWidth * ratio) / 2 + half_blueWidth 
  / 2+offAbs_x, r_white / 2+offY, half_blueWidth, 
  blueProgressHeight); 
 } 
 //绘制蓝色圆 
 for (int i = 0, j = index; i < j; i++) { 
 BitmapDrawable db_bluecircle = list_bluecircle.get(i); 
 drawCircle(canvas, db_bluecircle, 
  maxProgressWidth / (count - 1) * i+offAbs_x, r_white/2+offY, r_blue); 
 } 
 
 } 
 
 /**传统矩形坐标方法*/ 
 public void drawRect(Canvas canvas, Drawable d, int x, int y, int width, 
 int height) { 
 d.setBounds(x - width / 2, y - height / 2, x + width / 2, y + height 
 / 2); 
 d.draw(canvas); 
 } 
 /**传统圆点坐标计算方法*/ 
 public void drawCircle(Canvas canvas, Drawable d, int x, int y, int r) { 
 d.setBounds(x - r / 2, y - r / 2, x + r / 2, y + r / 2); 
 d.draw(canvas); 
 } 
 /**绘制文字 传统坐标计算方法*/ 
 public void drawText(Canvas canvas,Paint paint, String str, int x, int y, int w,int h) { 
 canvas.drawText(str, x-w/2, y-h/2, x+w, y+h, paint); 
 } 
 
 public double getRatio() { 
 return ratio; 
 } 
 
 public void setRatio(double ratio) { 
 this.ratio = ratio; 
 } 
 
 public int getCount() { 
 return count; 
 } 
 
 public void setCount(int count) { 
 this.count = count; 
 } 
 
 public int getIndex() { 
 return index; 
 } 
 
 public void setIndex(int index) { 
 this.index = index; 
 } 
 
}