AndroidグラフィックスPath類の使用

package com.javaeye.android.my;     
         
import android.app.Activity;     
import android.os.Bundle;     
import android.view.View;     
import android.content.Context;     
import android.graphics.Canvas;     
import android.graphics.Color;     
import android.graphics.Paint;     
import android.graphics.RectF;     
import android.graphics.Path;     
import android.graphics.Shader;     
import android.graphics.LinearGradient;     
  
//       Android.view.View  MyView ，   MyView onDraw（）  ，      
//            ， onDraw（）  Paint        Canvas ，      
//  paint.setColor()       、  paint.setStyle()                
//         。       ，     Canvas    ，  Paint       
//       ，          。   
  
public class GraphicesActivity extends Activity {     
    /** Called when the activity is first created. */    
    @Override    
    public void onCreate(Bundle savedInstanceState) {     
        super.onCreate(savedInstanceState);     
        /*  ContentView     MyVieW*/    
        MyView myView=new MyView(this);     
        setContentView(myView);     
    }     
          
    /*      View  MyView*/    
    private class MyView extends View {     
         public MyView(Context context){     
            super(context) ;     
         }     
              
         /*  onDraw（）*/    
         @Override    
         protected void onDraw(Canvas canvas)     
         {        
              super.onDraw(canvas);     
              /*       */    
              canvas.drawColor(Color.WHITE);     
                    
              Paint paint=new Paint();     
              /*   */    
              paint.setAntiAlias(true);     
              /*  paint   */    
              paint.setColor(Color.RED);     
              /*  paint  style  STROKE：  */    
              paint.setStyle(Paint.Style.STROKE);     
              /*  paint     */    
              paint.setStrokeWidth(3);     
                    
              /*       */    
              canvas.drawCircle(40, 40, 30, paint);     
              /*        */    
              canvas.drawRect(10, 90, 70, 150, paint);     
              /*        */    
              canvas.drawRect(10, 170, 70,200, paint);     
              /*        */    
              canvas.drawOval(new RectF(10,220,70,250), paint);     
              /*        */    
              Path path=new Path();     
              path.moveTo(10, 330);     
              path.lineTo(70,330);     
              path.lineTo(40,270);     
              path.close();     
              canvas.drawPath(path, paint);     
              /*       */    
              Path path1=new Path();     
              path1.moveTo(10, 410);     
              path1.lineTo(70,410);     
              path1.lineTo(55,350);     
              path1.lineTo(25, 350);     
              path1.close();     
              canvas.drawPath(path1, paint);     
                    
              /*  paint   */    
              paint.setColor(Color.BLUE);     
              /*  paint  style  FILL：  */    
              paint.setStyle(Paint.Style.FILL);     
              /*      */    
              canvas.drawCircle(120,40,30, paint);     
              /*        */    
              canvas.drawRect(90, 90, 150, 150, paint);     
              /*        */    
              canvas.drawRect(90, 170, 150,200, paint);     
              /*       */    
              RectF re2=new RectF(90,220,150,250);     
              canvas.drawOval(re2, paint);     
              /*        */    
              Path path2=new Path();     
              path2.moveTo(90, 330);     
              path2.lineTo(150,330);     
              path2.lineTo(120,270);     
              path2.close();     
              canvas.drawPath(path2, paint);     
              /*       */    
              Path path3=new Path();     
              path3.moveTo(90, 410);     
              path3.lineTo(150,410);     
              path3.lineTo(135,350);     
              path3.lineTo(105, 350);     
              path3.close();     
              canvas.drawPath(path3, paint);     
                    
              /*     */    
              Shader mShader=new LinearGradient(0,0,100,100,     
                      new int[]{Color.RED,Color.GREEN,Color.BLUE,Color.YELLOW},     
                      null,Shader.TileMode.REPEAT);     
              //Shader.TileMode          
              //REPEAT:                
              //CLAMP:              ，              
              //MIRROR: REPEAT        ，              
              paint.setShader(mShader);// Shader                
                 
              /*       */    
              canvas.drawCircle(200,40,30, paint);     
              /*         */    
              canvas.drawRect(170, 90, 230, 150, paint);     
              /*         */    
              canvas.drawRect(170, 170, 230,200, paint);     
              /*        */    
              RectF re3=new RectF(170,220,230,250);     
              canvas.drawOval(re3, paint);     
              /*         */    
              Path path4=new Path();     
              path4.moveTo(170,330);     
              path4.lineTo(230,330);     
              path4.lineTo(200,270);     
              path4.close();     
              canvas.drawPath(path4, paint);     
              /*        */    
              Path path5=new Path();     
              path5.moveTo(170, 410);     
              path5.lineTo(230,410);     
              path5.lineTo(215,350);     
              path5.lineTo(185, 350);     
              path5.close();     
              canvas.drawPath(path5, paint);     
                    
              /*  */    
              paint.setTextSize(24);     
              canvas.drawText("  ", 240, 50, paint);     
              canvas.drawText("   ", 240, 120, paint);     
              canvas.drawText("   ", 240, 190, paint);     
              canvas.drawText("   ", 240, 250, paint);     
              canvas.drawText("   ", 240, 320, paint);     
              canvas.drawText("  ", 240, 390, paint);       
         }     
    }     
}   

テキストリンク:http://www.linuxidc.com/Linux/2011-12/49307.htm