1 package com.example.gameview;
 2 
 3 import android.content.Context;
 4 import android.graphics.Canvas;
 5 import android.graphics.Color;
 6 import android.graphics.Paint;
 7 import android.view.KeyEvent;
 8 import android.view.MotionEvent;
 9 import android.view.View;
10 
11 public class MyView extends View {
12 
13     private int x=10,y=10;
14     
15     public MyView(Context context) {
16         super(context);
17         setFocusable(true);//设置当前view为焦点操作
18         // TODO Auto-generated constructor stub
19     }
20     
21     @Override
22     protected void onDraw(Canvas canvas) {
23         // TODO Auto-generated method stub
24         Paint paint = new Paint();
25         paint.setColor(Color.BLACK);
26         canvas.drawText("GameView", x, y, paint);
27         
28         super.onDraw(canvas);
29     }
30     
31     @Override
32     public boolean onKeyDown(int keyCode, KeyEvent event) {
33         // TODO Auto-generated method stub
34         if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
35             y-=2;
36         } else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN){
37             y+=2;
38         } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT){
39             x-=2;
40         } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT){
41             x+=2;
42         }
43         
44         invalidate();
45         //postInvalidate();
46         return super.onKeyDown(keyCode, event);
47     }
48     
49     @Override
50     public boolean onKeyUp(int keyCode, KeyEvent event) {
51         // TODO Auto-generated method stub
52         return super.onKeyUp(keyCode, event);
53     }
54     
55     @Override
56     public boolean onTouchEvent(MotionEvent event) {
57         // TODO Auto-generated method stub
58         int tx = (int)event.getX();
59         int ty = (int)event.getY();
60         //玩家手指点击屏幕的动作
61         if (event.getAction() == MotionEvent.ACTION_DOWN) {
62             x = tx;
63             y = ty;
64             //玩家手指抬起离开屏幕的动作
65         } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
66             x = tx;
67             y = ty;
68             //玩家手指在屏幕上移动的动作
69         } else if (event.getAction() == MotionEvent.ACTION_UP) {
70             x = tx;
71             y = ty;
72         }
73 //        //获取用户手指触屏的X坐标赋值与文本的X坐标
74 //        x = (int)event.getX();
75 //        //获取用户手指触屏的Y坐标赋值与文本的Y坐标
76 //        y = (int)event.getY();
77 //        //重绘画布
78         
79         //重绘画布
80         invalidate();
81         //postInvalidate();
82         return true;
83     }
84 
85 }

1 // 去掉Activity标题栏
2 this.requestWindowFeature(Window.FEATURE_NO_TITLE);
3 // 去掉 电量、时间等状态栏，全屏显示
4 this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

1 android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

1 Paint paint = new Paint();// 画笔类
2 paint.setColor(Color.BLACK);// 初始画布为白色，设置画笔为黑色
3 canvas.drawText("GameView", x, y, paint);// 坐标无论横屏竖屏都是从右上角为 0,0点开始的
4 
5 super.onDraw(canvas);