midp2eventgame_canvas.java

MIDP1.0标准按键测试 MIDP1.0标准按键测试 MIDP1.0标准按键测试 MIDP1.0标准按键测试

/*
 *MIDP2.0游戏按键测试
 *MIDP2EventGame_Canvas.java
 *Editer:Jinlong He
 *Date:2008-01-24
 */
 import javax.microedition.lcdui.*;
 import javax.microedition.lcdui.game.*;
 
 public class MIDP2EventGame_Canvas extends GameCanvas{
 	private int width;		//mobile screen width
 	private int height;		//mobile screen height
 	
 	String text = "MIDP2.0游戏按键测试";
 	
 	/*
 	 *1.构造
 	 *
 	 */
 	MIDP2EventGame_Canvas(){
 		super(false);		//suppressKeyEvents取值为true时不响应键盘事件，所以在此为false
 		width = this.getWidth();
 		height = this.getHeight();
 		if(this.hasPointerEvents()){
 			text ="特性：设备支持手写笔";
 		}else{
 			text ="特性：设备不支持手写笔";			
 		}
 		if(this.hasPointerMotionEvents()){				//是否支持触控笔拖曳pointerDragged(),和上面的方法是2.0里有的
 			text +="、支持触控笔拖曳";	
 		}else{
 			text +="、不支持触控笔拖曳";
 		}
 		if(this.hasRepeatEvents()){
 			text +="、支持持继按键";
 		}else{
 			text += "、不支持持继按键";
 		}
 		flushGraphics();
 		//repaint();
 		
 	}
 	
 	/*
 	 *2.实现paint()方法
 	 *
 	 */
 	public void paint(Graphics g){
 		
 		g.setColor(0,0,255);
 		g.fillRect(0,0,width,height);
 		g.setColor(255,255,255);
 		g.drawString(text,0,height/2,Graphics.LEFT | Graphics.TOP);	//写字符四个参数：字符串、始宽、始高、格式
 		
 	}
 	
 	/*
 	 *3.响应按键事件
 	 *keyReleased为keyPressed的相反事件，松开按钮时触发
 	 */
 	protected void keyPressed(int keyCode){
 		//↓↑←→↖↗↙↘
 		text="游戏按键测试";
 		int keyState = this.getKeyStates();
 
 		if ((UP_PRESSED & keyState) != 0){	
 			text += "游戏上";		//"↑" or "2"
 		}
 		if ((DOWN_PRESSED & keyState) != 0){
 			text += "游戏下";		//"↓" or "8"
 		} 			
 		if ((LEFT_PRESSED & keyState) != 0){
 			text += "游戏左";		//"→" or "6"
 		}
 		if ((RIGHT_PRESSED & keyState) != 0){
 			text += "游戏右";		//"←" or "4"
 		} 		
 		if ((FIRE_PRESSED & keyState) != 0){
 			text += "游戏开火";	//"OK" or "5"
 		} 		
 		if ((GAME_A_PRESSED & keyState) != 0){
 			text += "游戏A↖";		//"1"
 		} 			
 		if ((GAME_B_PRESSED & keyState) != 0){			
 			text += "游戏B↗";		//"3"
 		} 			
 		if ((GAME_C_PRESSED & keyState) != 0){
 			text += "游戏C↙";		//"7"
 		} 			
 		if ((GAME_D_PRESSED & keyState) != 0){
 			text += "游戏D↘";		//"9"				
 		}			

 		repaint();
 	}
 	
 	/*
 	 *4.响应按键事件
 	 *keyReleased为keyPressed的相反事件，松开按钮时触发
 	 */
 	protected void keyReleased(int keyCode){
 		//↓↑←→↖↗↙↘
 		text = "松开";
 		int keyState = this.getKeyStates();
 		if ((UP_PRESSED & keyState) != 0){	
 			text += "游戏上";		//"↑" or "2"
 		}
 		if ((DOWN_PRESSED & keyState) != 0){
 			text += "游戏下";		//"↓" or "8"
 		} 			
 		if ((LEFT_PRESSED & keyState) != 0){
 			text += "游戏左";		//"→" or "6"
 		}
 		if ((RIGHT_PRESSED & keyState) != 0){
 			text += "游戏右";		//"←" or "4"
 		} 		
 		if ((FIRE_PRESSED & keyState) != 0){
 			text += "游戏开火";	//"OK" or "5"
 		} 		
 		if ((GAME_A_PRESSED & keyState) != 0){
 			text += "游戏A↖";		//"1"
 		} 			
 		if ((GAME_B_PRESSED & keyState) != 0){			
 			text += "游戏B↗";		//"3"
 		} 			
 		if ((GAME_C_PRESSED & keyState) != 0){
 			text += "游戏C↙";		//"7"
 		} 			
 		if ((GAME_D_PRESSED & keyState) != 0){
 			text += "游戏D↘";		//"9"				
 		}
 		repaint();
 	}
 	
 }