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package com.czhappy.effectdemo.view;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.FontMetrics;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.View;

import com.czhappy.effectdemo.R;
import com.czhappy.effectdemo.utils.ScreenUtil;


public class MyProgressView extends View {

 // 畫實(shí)心圓的畫筆
 private Paint mCirclePaint;
 // 畫圓環(huán)的畫筆
 private Paint mRingDefaultPaint;
 // 已用環(huán)的畫筆
 private Paint mUsePaint;
 // 畫圓環(huán)的畫筆
 private Paint mRingPaint;
 // 畫白線的畫筆
 private Paint mLinePaint;
 // 畫字體的畫筆
 private Paint mTextPaint;
 // 圓形顏色
 private int mCircleColor;
 // 圓環(huán)顏色
 private int mRingColor;
 // 半徑
 private float mRadius;
 // 圓環(huán)半徑
 private float mRingRadius;
 // 圓環(huán)寬度
 private float mStrokeWidth;
 // 圓心x坐標(biāo)
 private int mXCenter;
 // 圓心y坐標(biāo)
 private int mYCenter;
 // 字的長度
 private float mTxtWidth;
 // 字的高度
 private float mTxtHeight;
 // 總進(jìn)度
 private int mTotalProgress = 100;
 // 當(dāng)前進(jìn)度
 private int mProgress;
 // 實(shí)際展示總進(jìn)度
 private int mShowProgress;
 // 已用流量
 private String usedFlow;

 private Context mContext;

 private Handler circleHandler = new Handler(){

  public void handleMessage(Message msg) {
   super.handleMessage(msg);
   if(msg.what == 1){
    int temp = (Integer)msg.obj;
    setProgress(temp);
   }
  };
 };

 public MyProgressView(Context context, AttributeSet attrs) {
  super(context, attrs);
  mContext = context;
  // 獲取自定義的屬性
  initAttrs(context, attrs);
  initVariable();
 }

 private void initAttrs(Context context, AttributeSet attrs) {
  TypedArray typeArray = context.getTheme().obtainStyledAttributes(attrs,
    R.styleable.TasksCompletedView, 0, 0);
  mRadius = typeArray.getDimension(R.styleable.TasksCompletedView_radius, 80);
  mStrokeWidth = typeArray.getDimension(R.styleable.TasksCompletedView_strokeWidth, 10);
  mCircleColor = typeArray.getColor(R.styleable.TasksCompletedView_circleColor, 0xFFFFFFFF);
  mRingColor = typeArray.getColor(R.styleable.TasksCompletedView_ringColor, 0xFFFFFFFF);

  mRingRadius = mRadius + mStrokeWidth / 2;
 }

 private void initVariable() {
  //畫圓畫筆設(shè)置
  mCirclePaint = new Paint();
  mCirclePaint.setAntiAlias(true);//防鋸齒
  mCirclePaint.setColor(mCircleColor);
  mCirclePaint.setStyle(Paint.Style.FILL);

  //“使用”字畫筆設(shè)置
  mUsePaint = new Paint();
  mUsePaint.setAntiAlias(true);
  mUsePaint.setStyle(Paint.Style.FILL);
  mUsePaint.setColor(getResources().getColor(R.color.ticket_color));
  mUsePaint.setTextSize(ScreenUtil.sp2px(mContext, 10));

  //圓環(huán)畫筆設(shè)置
  mRingDefaultPaint = new Paint();
  mRingDefaultPaint.setAntiAlias(true);
  mRingDefaultPaint.setColor(getResources().getColor(R.color.default_ring_color));
  mRingDefaultPaint.setStyle(Paint.Style.STROKE);
  mRingDefaultPaint.setStrokeWidth(mStrokeWidth);

  //已使用多少圓環(huán)畫筆設(shè)置
  mRingPaint = new Paint();
  mRingPaint.setAntiAlias(true);
  mRingPaint.setColor(mRingColor);
  mRingPaint.setStyle(Paint.Style.STROKE);
  mRingPaint.setStrokeWidth(mStrokeWidth);

  mTextPaint = new Paint();
  mTextPaint.setAntiAlias(true);
  mTextPaint.setStyle(Paint.Style.FILL);
  mTextPaint.setColor(Color.BLACK);
  mTextPaint.setTextSize(ScreenUtil.sp2px(mContext, 22));

  mLinePaint = new Paint();
  mLinePaint.setColor(Color.WHITE);


  //獲取字體高度
  FontMetrics fm = mTextPaint.getFontMetrics();
  mTxtHeight = (int) Math.ceil(fm.descent - fm.ascent);

 }

 @Override
 protected void onDraw(Canvas canvas) {

  mXCenter = getWidth() / 2;
  mYCenter = getHeight() / 2;

  //畫圓
  canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint);

  RectF oval = new RectF();
  oval.left = (mXCenter - mRingRadius);
  oval.top = (mYCenter - mRingRadius);
  oval.right = mRingRadius * 2 + (mXCenter - mRingRadius);
  oval.bottom = mRingRadius * 2 + (mYCenter - mRingRadius);
  //畫整圓弧
  canvas.drawArc(oval, -90, 360, false, mRingDefaultPaint);
  //已使用多少圓弧
  canvas.drawArc(oval, -90, ((float) mProgress / mTotalProgress) * 360, false, mRingPaint);
  //文字繪制
  String txt = mProgress + "%";
  //文字的長度
  mTxtWidth = mTextPaint.measureText(txt, 0, txt.length());
  canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 9, mTextPaint);

  Rect _pb = new Rect();
  String sup = "已用";
  mUsePaint.getTextBounds(sup, 0, sup.length(), _pb);
  int perX = mXCenter - _pb.width() / 2;
  canvas.drawText(sup, perX, mYCenter / 2, mUsePaint);

  if (!TextUtils.isEmpty(usedFlow)) {
   mUsePaint.getTextBounds(usedFlow, 0, usedFlow.length(), _pb);
   perX = mXCenter - _pb.width() / 2;
   canvas.drawText(usedFlow, perX, (float) (mYCenter + mYCenter / 1.7), mUsePaint);
  }

  //畫橫線圖片
  Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.circle_bottom_bg);
  perX = mXCenter - bitmap.getWidth() / 2;
  canvas.drawBitmap(bitmap, perX, (float) (mYCenter + mYCenter / 5), mLinePaint);
 }

 /**
  * 設(shè)置當(dāng)前進(jìn)度
  * @param progress
  */
 public void setProgress(int progress) {
  mProgress = progress;
  postInvalidate();
 }

 /**
  * 實(shí)際展示總進(jìn)度
  * @param progress
  */
 public void setmShowProgress(int progress) {
  mShowProgress = progress;
  new Thread(new CircleThread()).start();
 }

 public void setUsedFlow(String usedFlow) {
  this.usedFlow = usedFlow;
 }


 private class CircleThread implements Runnable{

  int m=0;
  int i=0;

  @Override
  public void run() {
   // TODO Auto-generated method stub
   while(!Thread.currentThread().isInterrupted()){
    try {
     Thread.sleep(50);
     m++;
     Message msg = new Message();
     msg.what = 1;
     if(i < mShowProgress){
      i += m;
     }else{
      i = mShowProgress;
      return;
     }
     msg.obj = i;
     circleHandler.sendMessage(msg);
    } catch (InterruptedException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
   }
  }

 }
}

package com.czhappy.effectdemo.activity;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

import com.czhappy.effectdemo.R;
import com.czhappy.effectdemo.view.MyProgressView;

/**
 * Description:
 * User: chenzheng
 * Date: 2017/1/21 0021
 * Time: 17:17
 */
public class FlowActivity extends AppCompatActivity {

 private MyProgressView mTasksView;

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_flow);

  initView();
 }

 private void initView() {
  mTasksView = (MyProgressView) findViewById(R.id.flow_prgress_view);
 }

 public void beginAnim(View view){
  mTasksView.setUsedFlow("200.0M");
  mTasksView.setmShowProgress(60);
 }
}

<?xml version="1.0" encoding="utf-8"?>