本文只是一个关于Android线程之间通信的例子,高手请自动略过。例子主要实现如下功能:进度条,音乐播放进度显示,图片的移动。

游戏部分源码:

LoadBar.java

  1. package com.dance.mrljdx;  
  2.  
  3. import android.app.Activity;  
  4. import android.content.Intent;  
  5. import android.os.Bundle;  
  6. import android.os.Handler;  
  7. import android.os.Message;  
  8. import android.util.DisplayMetrics;  
  9. import android.util.Log;  
  10. import android.widget.ProgressBar;  
  11. import android.widget.TextView;  
  12.  
  13. public class LoadBar extends Activity {  
  14.     /** Called when the activity is first created. */  
  15.     TextView txview=null,txload=null;  
  16.     ProgressBar pBar=null;  
  17.     protected static final int stop=1;  
  18.     protected static final int start=2;  
  19.     int intCounter=1;  
  20.     @Override  
  21.     public void onCreate(Bundle savedInstanceState) {  
  22.         super.onCreate(savedInstanceState);  
  23.         setContentView(R.layout.loadbar);  
  24.         //DisplayMetrics 获取屏幕信息  
  25.         DisplayMetrics dm=new DisplayMetrics();  
  26.         getWindowManager().getDefaultDisplay().getMetrics(dm);  
  27.         int screenwith=dm.widthPixels;  
  28.         int screenheigh=dm.heightPixels;  
  29.         txview=(TextView)findViewById(R.id.textwh);  
  30.         txload=(TextView)findViewById(R.id.loadtext);  
  31.         pBar=(ProgressBar)findViewById(R.id.pb);  
  32.         txview.setText("屏幕宽度:"+screenwith+"\n屏幕长度:"+screenheigh);        //通过线程来改变ProgressBar的值  
  33.           
  34.         new Thread(new Runnable() {  
  35.             public void run()  
  36.             {  
  37.                 for (int i = 0; i <=pBar.getMax(); i++)  
  38.                 {  
  39.                     try  
  40.                     {  
  41.                         Thread.sleep(100);  
  42.                         iintCounter=i+1;  
  43.                         if (i == pBar.getMax())  
  44.                         {  
  45.                             Message m = new Message();  
  46.                             m.what=LoadBar.stop; //what是一个整形值  
  47.                             LoadBar.this.myMessageHandler.sendMessage(m);  
  48.                             //将处理信息发送给myMessageHandler处理  
  49.                             break;  
  50.                         }  
  51.                         else  
  52.                         {  
  53.                             Message m = new Message();  
  54.                             m.what=LoadBar.start;  
  55.                             LoadBar.this.myMessageHandler.sendMessage(m);  
  56.                         }  
  57.                     }  
  58.                     catch (Exception e)  
  59.                     {  
  60.                         e.printStackTrace();  
  61.                     }  
  62.                 }  
  63.             }  
  64.         }).start();  
  65. }  
  66. //重构Handler方法  
  67. Handler myMessageHandler = new Handler()  
  68. {  
  69.   // @Override   
  70.       public void handleMessage(Message msg)  
  71.       {  
  72.           switch (msg.what)  
  73.           {  
  74.           //ProgressBar已经是对大值  
  75.           case LoadBar.stop:  
  76.               //设置Intent,跳转到其他Activity  
  77.               Intent mIntent=new Intent();  
  78.               mIntent.setClass(LoadBar.this, Menu.class);  
  79.               startActivity(mIntent);  
  80.               Log.d("Lua", "Main==class");  
  81.               Thread.currentThread().interrupt();  
  82.               finish();  
  83.               break;  
  84.           case LoadBar.start:  
  85.               if (!Thread.currentThread().isInterrupted())  
  86.               {  
  87.                   // 改变ProgressBar的当前值  
  88.                   pBar.setProgress(intCounter);  
  89.                   // 设置标题栏中前景的一个进度条进度值  
  90.                   Log.d("Lua", "LoadBar线程");  
  91.                   txload.setText("  加载中 "+intCounter+"%");  
  92.               }  
  93.               break;  
  94.           }  
  95.           super.handleMessage(msg);  
  96.      }  
  97.     };  

Game.java

 

  1. package com.dance.mrljdx;  
  2.  
  3. import android.app.Activity;  
  4. import android.media.MediaPlayer;  
  5. import android.os.Bundle;  
  6. import android.os.Handler;  
  7. import android.os.Message;  
  8. import android.util.Log;  
  9. import android.view.KeyEvent;  
  10. import android.view.View;  
  11. import android.view.View.OnClickListener;  
  12. import android.view.animation.Animation;  
  13. import android.view.animation.AnimationUtils;  
  14. import android.widget.ImageButton;  
  15. import android.widget.ImageView;  
  16. import android.widget.SeekBar;  
  17. public class Game extends Activity {  
  18.     MediaPlayer mediaPlayer;  
  19.     ImageButton imgbt1,imgbt2,imgbt3,openbt;  
  20.     OnClickListener listener1=null;  
  21.     OnClickListener listener2=null;  
  22.     OnClickListener listener3=null;  
  23.     OnClickListener listener4=null;  
  24.     OnClickListener openlistener=null;  
  25.     SeekBar sBar;  
  26.     Animation myAnimation;  
  27.     ImageView img1;  
  28.     private static final int start=1;  
  29.     private static final int end=2;  
  30. //  int position=mediaPlayer.getCurrentPosition();  
  31.     int pb,i;  
  32.     double current;  
  33.     @Override  
  34.     public void onCreate(Bundle savedInstanceState) {  
  35.         super.onCreate(savedInstanceState);  
  36.         setContentView(R.layout.game);  
  37.         setListener();  
  38.         imgbt1=(ImageButton)findViewById(R.id.btleft);  
  39.         imgbt1.setOnClickListener(listener1);  
  40.         imgbt2=(ImageButton)findViewById(R.id.btright);  
  41.         imgbt2.setOnClickListener(listener2);  
  42.         imgbt3=(ImageButton)findViewById(R.id.btup);  
  43.         imgbt3.setOnClickListener(listener3);  
  44. //        openbt=(ImageButton)findViewById(R.id.btopen);  
  45.         sBar=(SeekBar)findViewById(R.id.seek);  
  46.         pb=sBar.getProgress();  
  47.         myAnimationAnimationUtils.loadAnimation(this,R.anim.img);  
  48.         img1=(ImageView) this.findViewById(R.id.img1);  
  49.          
  50.     }  
  51.     void setListener(){  
  52.         listener1=new OnClickListener() {  
  53.             public void onClick(View v) {  
  54.                 initSound();  
  55.             }  
  56.         };  
  57.         listener2=new OnClickListener() {  
  58.             public void onClick(View v) {  
  59.                 stopMusic();  
  60.             }  
  61.         };  
  62.         listener3=new OnClickListener() {  
  63.             public void onClick(View v) {  
  64.                 img1.setVisibility(View.INVISIBLE);  
  65.             }  
  66.         };  
  67.         openlistener=new OnClickListener() {  
  68.             public void onClick(View v) {  
  69.                 // TODO Auto-generated method stub  
  70.                 choosMusic();  
  71.             }  
  72.         };  
  73.     }  
  74.         //游戏音效  
  75.     void initSound(){  
  76.         mediaPlayer=MediaPlayer.create(this,R.raw.gf);  
  77.         if(!mediaPlayer.isPlaying()){  
  78.             mediaPlayer.start();//播放声音  
  79.             img1.setVisibility(View.VISIBLE);  
  80.             img1.startAnimation(myAnimation);  
  81.         }  
  82.         new Thread(new Runnable() {  
  83.               
  84.             public void run() {  
  85.                 // TODO Auto-generated method stub  
  86.                   
  87.                 while(current<1){  
  88.                     Message m=new Message();  
  89.                     if(mediaPlayer.isPlaying()){  
  90.                         current=(double)mediaPlayer.getCurrentPosition()/mediaPlayer.getDuration();  
  91. //                      Log.d("Lua", "==当前音乐是否播放="+mediaPlayer.isPlaying());  
  92.                         m.what=Game.start;  
  93.                         Game.this.musicHandler.sendMessage(m);  
  94.                     }else {  
  95.                         Log.d("Lua", "当前音乐是否播放="+mediaPlayer.isPlaying());  
  96.                         m.what=Game.end;  
  97.                         Game.this.musicHandler.sendMessage(m);  
  98.                         break;  
  99.                     }  
  100.                 }  
  101.             }  
  102.         }).start();  
  103.     }  
  104.     //停止播放音乐  
  105.     void stopMusic(){  
  106.         if(mediaPlayer.isPlaying()){  
  107.             mediaPlayer.stop();//暂停声音  
  108.         }  
  109.         this.finish();  
  110.     }  
  111.     //选择播放的音乐  
  112.     void choosMusic(){  
  113.           
  114.     }  
  115.     Handler musicHandler = new Handler(){  
  116.         public void handleMessage(Message msg) {  
  117.             switch(msg.what)  
  118.             {  
  119.             case Game.start:  
  120.                 if (!Thread.currentThread().isInterrupted())  
  121.                 {  
  122.                     int i=new Double(current*100).intValue();  
  123.                     Log.d("Lua", "==当期音乐播放位置="+i);  
  124.                     // 改变ProgressBar的当前值  
  125.                     sBar.setProgress(i+1);  
  126.                 }  
  127.               break;  
  128.             case Game.end:  
  129.                 Log.d("Lua", "当前音乐是否播放="+mediaPlayer.isPlaying());  
  130.                 Thread.currentThread().interrupt();  
  131.                 break;  
  132.             }  
  133.               
  134.         }  
  135.     };  
  136. }  

游戏截图: