实例13---点击速度测试机
在原java me中通过这个例子是想要讲解RecordStore的使用，我在用了另外一种方式来实现同样的效果，就是用SharedPreferences, 然后用触屏点击事件替换了按键点击事件。下面给出小效果图和源代码：
http://dl.iteye.com/upload/attachment/500655/386a36c0-ba39-3699-a83a-24e84b7508f3.png
http://dl.iteye.com/upload/attachment/500657/65342fcd-7ef8-38f3-adb0-8b17d4366e80.png
MainView
package com.wjh.demon_13;import com.wjh.midp_me.AndroidSprite;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Typeface;import android.util.Log;import android.util.MonthDisplayHelper;import android.view.KeyEvent;import android.view.MotionEvent;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.SurfaceHolder.Callback;public class MainView extends SurfaceView implements Callback,Runnable{int keyCode = 0;String keyAction = "";Thread gameThread = null;boolean isGame = true;SurfaceHolder holder = null;Paint backPaint = null;Paint forePaint = null;//具体游戏相关public AndroidSpritem_spButton;//按钮对象public RMSScore m_Score;//记录对象public intm_nTimes = 0;//管理时间public Typefacem_Font;public MainView(Context context) {super(context);// TODO Auto-generated constructor stubsetFocusable(true);getHolder().addCallback(this);holder = this.getHolder();backPaint = new Paint();backPaint.setColor(Color.BLACK);forePaint = new Paint();m_Score = new RMSScore(context);//分配内存空间m_Score.LoadHighScore();//读取最高分m_Font = Typeface.MONOSPACE;forePaint = new Paint();forePaint.setTypeface(m_Font);forePaint.setTextSize(20);forePaint.setColor(Color.WHITE);backPaint = new Paint();backPaint.setColor(Color.BLACK);Bitmap bitmap =BitmapFactory.decodeResource(getResources(), R.drawable.button);m_spButton = new AndroidSprite(bitmap, 25, 25 );m_spButton.setFrame( 0 );}public void StartTime(){//开始计时m_nTimes = 600;//600*100=60000毫秒=1分钟m_Score.m_nCurScore = 0;}@Overridepublic void run() {//获取系统当前时间，并将时间换算成以毫秒为单位的数long T1 = System.currentTimeMillis();long T2 = T1;while(isGame){T2 = System.currentTimeMillis();if( T2 - T1 > 100 ){ //间隔100毫秒T1 = T2;input();logic();doDraw();}}}//开始游戏主线程public void start(){m_spButton.setPosition( getWidth()/2 - 12, 90 );if(gameThread == null){gameThread = new Thread(this);gameThread.start();}}//停止游戏主线程public void stop(){isGame = false;if(gameThread != null){try {gameThread.join();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}//输入判断public void input(){}//逻辑判断public void logic(){if( m_nTimes > 0 ){//计时m_nTimes --;if( m_nTimes <= 0 ){//结束游戏m_Score.SaveHighScore();}}}public void doDraw(){Canvas c = null;try{c = holder.lockCanvas();synchronized (holder) {paint(c);}}finally{if(c != null){holder.unlockCanvasAndPost(c);}}}//画图public void paint(Canvas canvas){//用黑色清屏canvas.drawRect(0, 0, getWidth(), getHeight(), backPaint);//设置当前颜色及当前字体StringBuffer temp = new StringBuffer();StringBuffer temp2 = new StringBuffer();StringBuffer temp3 = new StringBuffer();//拼接字符temp2.append( "最高分:" );temp2.append( m_Score.m_nHighScore );temp3.append( "本次得分:" );temp3.append( m_Score.m_nCurScore );if( m_nTimes <= 0 )temp.append( "滑动开始" );else{temp.append( "剩余时间" );temp.append( m_nTimes / 10 );temp.append( "秒" );}//显示文字信息canvas.drawText(temp.toString(), 20, 30,forePaint);canvas.drawText( temp2.toString(), 20, 50, forePaint );canvas.drawText( temp3.toString(), 20, 70, forePaint );//显示按钮m_spButton.paint(canvas,forePaint);m_spButton.setFrame( 0 );}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {// TODO Auto-generated method stub}@Overridepublic void surfaceCreated(SurfaceHolder holder) {// TODO Auto-generated method stubstart();}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {// TODO Auto-generated method stubstop();}@Overridepublic boolean onTouchEvent(MotionEvent event) {// TODO Auto-generated method stubLog.d("ddd", ""+m_Score.m_nCurScore);if( m_nTimes <= 0 &&event.getAction() == MotionEvent.ACTION_DOWN){//计时尚未开始StartTime();return false;}if(event.getAction() == MotionEvent.ACTION_DOWN){m_Score.m_nCurScore ++;//增加分数m_spButton.setFrame( 1 );return true;}else{return false;}}}RMSSCore.java
package com.wjh.demon_13;import android.content.Context;import android.content.SharedPreferences;public class RMSScore {public int m_nHighScore = 0; // 历史最高分public int m_nCurScore = 0;// 当前得分private SharedPreferences sharedPreferences = null;public RMSScore(Context context){sharedPreferences = context.getSharedPreferences("RsScore", Context.MODE_PRIVATE);}/********* 利用RMS系统存储最高得分 ************/public void SaveHighScore() {if (m_nCurScore <= m_nHighScore) // 如果本次得分低于历史最高分{return; }// 直接返回m_nHighScore = m_nCurScore; // 刷新记录// 打开SharedPreferences，没有则新建this.sharedPreferences.edit().putInt("highScore", m_nHighScore).commit(); // 更改第一条记录}/********* 利用RMS系统读取最高得分 ************/public void LoadHighScore() {m_nHighScore = this.sharedPreferences.getInt("highScore", -1);}} apk文件(将后缀改为apk):Demon_13.zip
源代码文件:Demon_13.rar
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