android canvas 二

引用：http://hi.baidu.com/xdsh99/blog/item/1ae160ec0733dae5b2fb9591.html

注：1.数据都是从前一个页面传递过来的；

       2.不同区域设置不同的颜色，通过设置画笔的颜色即可；

       3.左上角定点坐标为（0,0）；

       4.包含画点，画线，画矩形，画椭圆，画圆形，写字

package com.xdsh.weeklyaccount;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import com.xdsh.entity.*;

public class PaintGraphy extends Activity
{
 CountEntity entity = new CountEntity();

 @Override
 protected void onCreate(Bundle savedInstanceState)
 {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  DrawView myView = new DrawView(PaintGraphy.this);
  setContentView(myView);
 }

 public class DrawView extends View
 {
  private int value, location;
  // 用于统计
  private double flagIn, flagOut, flagLeft;
  private float clotheRate, studyRate, trafficRate, otherRate;

  public DrawView(Context context)
  {
   super(context);
   // TODO Auto-generated constructor stub
  }

  @Override
  protected void onDraw(Canvas canvas)
  {
   // TODO Auto-generated method stub
   super.onDraw(canvas);
   // 设置背景色为浅灰色
   canvas.drawColor(Color.LTGRAY);
   // 定义一个画笔
   Paint paint = new Paint();
   // 抗锯齿
   paint.setAntiAlias(true);
   /*
    * 绘制小计柱状图
    */
   // 绘制 横坐标
   paint.setColor(Color.BLACK);
   canvas.drawLine(40, 200, 300, 200, paint);
   // for (int i = 70; i <= 250; i += 30)
   // {
   // paint.setColor(Color.WHITE);
   // // 绘制横坐标上的点
   // canvas.drawPoint(i, 200, paint);
   // }
   // 绘制纵坐标
   paint.setColor(Color.BLACK);
   canvas.drawLine(40, 30, 40, 200, paint);
   // for (int i = 170; i > 40; i -= 30)
   // {
   // // 绘制纵坐标上的点
   // paint.setColor(Color.WHITE);
   // canvas.drawPoint(40, i, paint);
   // }
   // 绘制水平线
   paint.setColor(Color.BLACK);
   for (int i = 170; i > 20; i -= 30)
   {
    canvas.drawLine(40, i, 280, i, paint);
   }
   // 设置标题字体大小
   paint.setTextSize(18);
   paint.setColor(Color.RED);
   canvas.drawText(getResources().getString(R.string.graph_page_count), 65, 26, paint);
   canvas.drawText(getResources().getString(R.string.graph_page_consume), 100, 250, paint);
   // 设置各项目字体为黑色
   paint.setColor(Color.BLACK);
   paint.setTextSize(15);
   // 收入，支出，余额
   canvas.drawText(getResources().getString(R.string.second_page_countIn), 60, 220, paint);
   canvas.drawText(getResources().getString(R.string.second_page_countOut), 130, 220, paint);
   canvas.drawText(getResources().getString(R.string.second_page_countLeft), 200, 220, paint);
   canvas.drawText(getResources().getString(R.string.graph_page_top), 5, 40, paint);
   canvas.drawText(getResources().getString(R.string.graph_page_right), 265, 218, paint);
   // 纵坐标对应的值
   for (value = 300, location = 180; value <= 1500; value += 300, location -= 30)
   {
    canvas.drawText("" + value, 5, location, paint);
   }
   canvas.drawText("0", 9, 210, paint);
   // 向右的箭头
   Path path1 = new Path();
   path1.moveTo(300, 200);
   path1.lineTo(295, 195);
   path1.lineTo(305, 200);
   path1.lineTo(295, 205);
   canvas.drawPath(path1, paint);
   // 向上的箭头
   Path path = new Path();
   path.moveTo(40, 30);
   path.lineTo(35, 35);
   path.lineTo(40, 25);
   path.lineTo(45, 35);
   canvas.drawPath(path, paint);
   // 接收数据
   Intent intent = getIntent();
   Bundle bundle = intent.getExtras();
   entity.setOutClothe(bundle.getDouble("first"));
   entity.setOutStudy(bundle.getDouble("second"));
   entity.setOutTraffic(bundle.getDouble("third"));
   entity.setOutOther(bundle.getDouble("fourth"));
   entity.setIncome(bundle.getDouble("inTotal"));
   entity.setOutcome(bundle.getDouble("outTotal"));
   entity.setLeft(bundle.getDouble("leftTotal"));
   flagIn = entity.getIncome();
   flagOut = entity.getOutcome();
   flagLeft = entity.getLeft();
   clotheRate = (float) (entity.getOutClothe() / entity.getOutcome());
   studyRate = (float) (entity.getOutStudy() / entity.getOutcome());
   trafficRate = (float) (entity.getOutTraffic() / entity.getOutcome());
   otherRate = (float) (entity.getOutOther() / entity.getOutcome());
   /*
    * 绘制小计矩形 canvas.drawRect(left, top, right, bottom, paint) (float)
    * clothe * 30 / 300得到高度 200 - (float) clothe * 30 / 300 得到坐标
    */
   paint.setColor(Color.RED);
   /*
    * 对收入进行判断 ，大于1500，设为1500，并显示金额 ；大于等于0小于等于1500，显示为柱状图；收入小于等于0，设为0
    */
   if (entity.getIncome() > 1500)
   {
    entity.setIncome(1500);
    canvas.drawText(flagIn + "", 100, 45, paint);
   } else if (entity.getIncome() > 0 && entity.getIncome() <= 1500)
   {
    canvas.drawText(flagIn + "", 100, 195 - (float) (entity.getIncome() * 30 / 300), paint);
   } else
   {
    entity.setIncome(0);
    canvas.drawText("0", 100, 195, paint);
   }
   canvas.drawRect(85, 200 - (float) (entity.getIncome() * 30 / 300), 115, 200, paint);
   /*
    * 对支出进行判断 ，大于1500，设为1500，并显示金额； 大于等于0小于等于1500，显示为柱状图；支出小于等于0，设为0
    */
   paint.setColor(Color.BLUE);
   if (entity.getOutcome() > 1500)
   {
    entity.setOutcome(1500);
    canvas.drawText(flagOut + "", 160, 45, paint);
   } else if (entity.getOutcome() >0 && entity.getOutcome() <= 1500)
   {
    canvas.drawText(flagOut + "", 160, 195 - (float) (entity.getOutcome() * 30 / 300), paint);
   } else
   {
    entity.setOutcome(0);
    canvas.drawText("0", 160, 195, paint);
   }
   canvas.drawRect(145, 200 - (float) (entity.getOutcome() * 30 / 300), 175, 200, paint);

   paint.setColor(Color.GREEN);
   /*
    * 对余额进行判断 ，大于1500，设为1500，并显示金额； 大于等于0小于等于1500，显示为柱状图；
    * 小于等于0；设置为0，显示超支金额
    */
   if (entity.getLeft() > 1500)
   {
    entity.setLeft(1500);
    canvas.drawText(flagLeft + "", 220, 45, paint);
   } else if (entity.getLeft() >= 0 && entity.getLeft() <= 1500)
   {
    canvas.drawText(flagLeft + "", 220, 195 - (float) (entity.getLeft() * 30 / 300), paint);
   } else
   {
    entity.setLeft(0);
    canvas.drawText("-" + flagLeft, 220, 195, paint);
   }
   canvas.drawRect(205, 200 - (float) entity.getLeft() * 30 / 300, 235, 200, paint);

   /*
    * 消费项明细
    * 
    * void drawArc (RectF oval, float startAngle, float sweepAngle,
    * boolean useCenter, Paint paint) 第1个参数oval表示这个弧形的边界。
    * 第2个参数startAngle是指开始的角度。 第3个参数sweepAngle是指圆弧的角度。
    * 第4个参数useCenter是指卖描画的图形包不包括圆心。 第5个参数是Paint的实例。
    */
   RectF rectF = new RectF(10, 265, 160, 415);

   // canvas.drawCircle(85, 340, 75, paint);
   
   // 衣服饰品
   paint.setColor(Color.rgb(200, 255, 180));
   canvas.drawArc(rectF, 0, clotheRate * 360, true, paint);
   // 矩形图例
   canvas.drawRect(175, 270, 195, 290, paint);
   // 文字图例
   canvas.drawText(getResources().getString(R.string.second_page_moneyoutOne), 203, 285, paint);
   // 百分比
   canvas.drawText(Math.round(clotheRate * 100) + "%", 273, 285, paint);
   // 学习
   paint.setColor(Color.rgb(180, 60, 250));
   canvas.drawArc(rectF, clotheRate * 360, studyRate * 360, true, paint);
   canvas.drawRect(175, 310, 195, 330, paint);
   canvas.drawText(getResources().getString(R.string.second_page_moneyoutTwo), 203, 325, paint);
   canvas.drawText(Math.round(studyRate * 100) + "%", 273, 325, paint);
   // 交通
   paint.setColor(Color.rgb(240, 180, 40));
   canvas.drawArc(rectF, (clotheRate + studyRate) * 360, trafficRate * 360, true, paint);
   canvas.drawRect(175, 350, 195, 370, paint);
   canvas.drawText(getResources().getString(R.string.second_page_moneyoutThree), 203, 365, paint);
   canvas.drawText(Math.round(trafficRate * 100) + "%", 273, 365, paint);
   // 其它
   paint.setColor(Color.rgb(240, 100, 220));
   canvas.drawArc(rectF, (clotheRate + studyRate + trafficRate) * 360, otherRate * 360, true, paint);
   canvas.drawRect(175, 390, 195, 410, paint);
   canvas.drawText(getResources().getString(R.string.second_page_moneyoutFour), 203, 405, paint);
   if((entity.getOutClothe()==0.0) && (entity.getOutStudy()==0.0) && (entity.getOutTraffic()==0.0) && (entity.getOutOther()==0.0)){
    canvas.drawText("0" + "%", 273, 405, paint);
   }else{
    canvas.drawText(100 - (Math.round(trafficRate * 100) + Math.round(studyRate * 100) + Math.round(clotheRate * 100)) + "%", 273, 405, paint);
   }
   
  }
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu)
 {
  // TODO Auto-generated method stub
  menu.add(0, 0, 1, "Back").setIcon(android.R.drawable.ic_menu_revert);
  return super.onCreateOptionsMenu(menu);
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item)
 {
  // TODO Auto-generated method stub
  if (item.getItemId() == 0)
  {
   Intent intent = new Intent();
   intent.setClass(PaintGraphy.this, CountAccount.class);
   startActivity(intent);
  }
  return super.onOptionsItemSelected(item);
 }
}