android显示动态条形图

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创建一个新的类实现自定义View，然后重写onDraw方法，一步一步地画出自己想要的条形图，

效果如图：

代码如下：

package com.viewTest;import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Rect;import android.graphics.Paint.Style; import android.util.AttributeSet; import android.view.View; public class MyView extends View {     public MyView(Context context) {        super(context);        // TODO Auto-generated constructor stub    }    public MyView(Context context,AttributeSet attr) {         super(context,attr);     }     private Paint myPaint;     private static final String myString1 = "2006-2011上半年中国移动互联网行业各年度投资情况";     private static final String myString2 = "来源：清科研究中心 2011.08";     @Override    protected void onDraw(Canvas canvas) {         // TODO Auto-generated method stub         super.onDraw(canvas);        myPaint = new Paint();          //绘制标题        myPaint.setColor(Color.BLACK); //设置画笔颜色        myPaint.setTextSize(18);//设置文字大小        canvas.drawText(myString1, 20, 20, myPaint);         //绘制坐标轴        canvas.drawLine(50, 100, 50, 500, myPaint);//纵坐标轴               canvas.drawLine(50, 500, 400, 500, myPaint);//横坐标轴        int[] array1 = new int[]{0, 50, 100, 150, 200, 250, 300, 350};        //绘制纵坐标刻度        myPaint.setTextSize(10);//设置文字大小        canvas.drawText("单位：百万美元", 20, 90, myPaint);         for (int i = 0; i < array1.length; i++) {            canvas.drawLine(50, 500 - array1[i], 54, 500 - array1[i], myPaint);            canvas.drawText(array1[i] + "", 20, 500 - array1[i], myPaint);        }        //绘制横坐标文字        String[] array2 = new String[]{"2008年", "2009年", "2010年", "2011上半年"};        for (int i = 0; i < array2.length; i++) {            canvas.drawText(array2[i], array1[i] + 80, 520, myPaint);        }        //绘制条形图        myPaint.setColor(Color.BLUE); //设置画笔颜色         myPaint.setStyle(Style.FILL); //设置填充         canvas.drawRect(new Rect(90, 500 - 56, 110, 500), myPaint);//画一个矩形,前两个参数是矩形左上角坐标，后两个参数是右下角坐标                canvas.drawRect(new Rect(140, 500 - 98, 160, 500), myPaint);//第二个矩形             canvas.drawRect(new Rect(190, 500 - 207, 210, 500), myPaint);//第三个矩形            canvas.drawRect(new Rect(240, 500 - 318, 260, 500), myPaint);//第四个矩形        myPaint.setColor(Color.BLACK); //设置画笔颜色        canvas.drawText("56.32", 88, 500 - 58, myPaint);//第一个矩形的数字说明        canvas.drawText("98.00", 138, 500 - 100, myPaint);        canvas.drawText("207.65", 188, 500 - 209, myPaint);        canvas.drawText("318.30", 238, 500 - 320, myPaint);        //绘制出处        myPaint.setColor(Color.BLACK); //设置画笔颜色        myPaint.setTextSize(16);//设置文字大小        canvas.drawText(myString2, 20, 560, myPaint);     } }

具体参考代码下载地址：http://download.csdn.net/detail/fengerfhf/5873463