1 package com.yarin.android.Examples_05_04;  
 2   
 3 import android.content.Context;  
 4 import android.graphics.Canvas;  
 5 import android.graphics.Color;  
 6 import android.graphics.Paint;  
 7 import android.graphics.Rect;  
 8 import android.view.KeyEvent;  
 9 import android.view.MotionEvent;  
10 import android.view.View;  
11   
12 public class GameView extends View implements Runnable {  
13       
14     private Paint mPaint = null;  
15   
16     public GameView(Context context) {  
17         super(context);  
18           
19         mPaint = new Paint();  
20   
21           
22         new Thread(this).start();  
23     }  
24   
25     public void onDraw(Canvas canvas) {  
26         super.onDraw(canvas);  
27   
28           
29         canvas.drawColor(Color.BLACK);  
30   
31           
32         mPaint.setAntiAlias(true);  
33   
34           
35         canvas.clipRect(10, 10, 280, 260);  
36   
37           
38         canvas.save();  
39           
40         canvas.rotate(45.0f);  
41   
42           
43         mPaint.setColor(Color.RED);  
44         canvas.drawRect(new Rect(15, 15, 140, 70), mPaint);  
45   
46           
47         canvas.restore();  
48   
49           
50         mPaint.setColor(Color.GREEN);  
51         canvas.drawRect(new Rect(150, 75, 260, 120), mPaint);  
52     }  
53   
54     // 触笔事件  
55     public boolean onTouchEvent(MotionEvent event) {  
56         return true;  
57     }  
58   
59     // 按键按下事件  
60     public boolean onKeyDown(int keyCode, KeyEvent event) {  
61         return true;  
62     }  
63   
64     // 按键弹起事件  
65     public boolean onKeyUp(int keyCode, KeyEvent event) {  
66         return false;  
67     }  
68   
69     public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {  
70         return true;  
71     }  
72   
73     public void run() {  
74         while (!Thread.currentThread().isInterrupted()) {  
75             try {  
76                 Thread.sleep(100);  
77             } catch (InterruptedException e) {  
78                 Thread.currentThread().interrupt();  
79             }  
80             // 使用postInvalidate可以直接在线程中更新界面  
81             postInvalidate();  
82         }  
83     }  
84 }