pasting

1    进程的概念

    [1]Android下四大组件都运行在主线程下
    [2]服务是在后台下运行    没有界面的activity   
           service 是 activity的大爷
进程的优先级
    [1]Foreground process    前台进程    优先级最高    相当于activity执行了onResume方法    用户正在交互
    [2]Visible    process    可视进程    一直影响用户看得见相当于activity执行了onPause方法
    [3]service    process    服务进程    通过startService方法开启一个服务
    [4]Background    process        后台进程    相当于activity执行了onStop方法    界面不可见    但是activity并没有销毁
    [5]Empty    process    空进程    不会维持任何组件运行
2    start方式开启服务的特点
    [1]定义四大组件的方式是一样的
    [2]定义一个类继承Service
    [3]第一次点击按钮开启服务    服务执行onCreate方法和onStartCommand方法
    [4]第二次点击按钮    再次开启服务    服务执行onStartCommand方法
    [5]服务一旦被开启    服务就会后台长期运行    直到用户手工停止
补充：股票应用
3    电话qie听器案例
    TelephoneManager
实现步骤
    [1]定义一个服务    开启服务    记得在清单文件配置服务
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7QkGR/uYDtl2XWKT41E1s+1fpCUsIbfqNCkvvBXHMW11AA8ZHjyPq1yuTZLOaLj/k7owEnWfeTy8bU1PUNY3nkvigKJbLY3k60+Nz2aJiwIG0p+hEd356oL6W247fWMaaswvqPd/Z/z9T17v/S4s9cSJoMB8F9SCVXSBJ+hE4L5/sMo3/sB7P1Z3kSiS0f1v6Gt+Ej6l/P+i63qn8YhDVUhe8PCdYYkqoJ2iyO2/FxIamohp3r7a8+Ne/llerlXQ/jxNRfqzD2QZhRP8v6/ZjzZvrL9Babwpw9aX2DeU9xVc4Qdn7LyyTFrzHOY1Mp36Q983rMgYnLU0TwyKcL+dEGjnf2/4Ut7f9GpTsfkqq3Ri4E9yBVrAO3o/5siFa4f+g5+KU/e+K6wec9vNPKK+QR0A3ftR1bf0r75T+e4Hwf+vm7wlzid+LY8tFsz3PYw4hQxngqRJhbL2J7M0rIAkIaZzn5LM5KxoqHfCGN3kQa3yl2PrujKf7nb5yPZIevceD2TGRJA75vaDEhSS4Z9yCFpa9dL+AKSUVRWP4mkjbXhfxoA8c7+38r9n91KTsfkpqLeroNAADsgBW/eGl7CEkAAGCVduYlAIQkAACwYtV9vW7fddtQSLKMgFnXixYBAAAaIiQBAAAINnm7DQAAoDMISQAAAAJCEgAAgICQBAAAICAkAQAACAhJAAAAAkISAACAgJAEAAAgICQBAAAIQkLSZDhYGk4iaickAQCAjvKFpNk4V4PRbJwPBvl4Flg7IQkAAHSUOyRNhmYkmo3z4JhESAIAAB3lCkllHDI/nwxD77oRkgAAQEe5QpK1yyg4JRGSAABAR9lDkjYaKXBSHSEJAAB0lDskWcYeEZIAAMCuSwpJwffbCEkAAKCjCEkAAAACQhIAAICAgdsAAAACQhIAAICA9yQBAAAIeOM2AACAwP+32/Q4xN9uAwAAZ4A7JJmRKLwXqSgISQAAoLOyQcUafWbjfDDwF5MQkgAAQEf5epKaISQBAICOIiQBAAAICEkAAAACQhIAAICAkAQAACAgJAEAAAgISQAAAAJCEgAAgICQBAAAICAkAQAACAhJAAAAAkISAACAgJAEAAAgICSluX3x7aWDq0+23Z72KbfQxdvbbgcAAIkCQ9JkOBgM8nFs7bsZkp5cPVAv/9o/UUoOSeX2JH0CALbNE5Imw8ESIako5hd/7dr/5OqBMw8o1/0zc+1v2pN0++IZ2VAAgLayh6TZOB8MBoPBcFIUZVoiJNnjkD0lmWGh/IQA4EZIAgBsWeiYJEJSyRaGyku6+LG1PBnAhZAEANiy1YSk01evZ99+d+Pju1fHt258fHf27Xenr14XOxiSbl+0dBiJIckakYqiKPOWkKtQIiQBALZsBSHp5avXn3z+8M4XXx49e/Hi9T+Onr2488XjTz5/+PLV610LSebNNvUpNy3x+AYqqTFAG7RUz1a1J+nMBZnzWrOF3Nrlp/qMseXNtoaMSTJGbOlbx1mcHjkAwJqsICR9NXt+696j45c/Hr/88fjlP2Yvfzx++eOte48ef/10F0PS8oqsji0ye5K8GUnIAdaOKutEaXi0f8h0uR56K5+UfVuWXBJTPmBt1LbW6qgeFpRDUtr6AgCQYAUh6dc3Pvv86PmfX/zw6MXrP1c/k6O//vrGZ7sckur30syQFBoR6nPVUpht0epnruHi1sXPQ49R55OrB+I8seWXbXBugWX2EiYIXUTJ6wsAQIIVhKT3rnz0h6Pv//lfL6k/fzj6/r0rH+1wSNIu2GLcSQhJttwgBQ53CHGN6Xly9eDtg4OLwfepYsuHtE+MfbWJevvT1xcAgAQrCEm/un7n44fHfzw+uXd8cu/45I/fntw7Pvn44fGvrt8hJLnrk4Z7W++qxWUk6wN3i8ZHdLykvS/T3UBrN5KyyPB7kYVzfQEASLCCkPTwL0//+879B89OHjx7ef/ZyYNnJw+enVy/8+DhX3Z7TNJ8OM3yH6u43TZfSH1GMU+Y45clcgs8AaVx+VJIz497bjUkNVlfAAASrCAk/e3k9MbtL/7ns/v3vvz28V+/v/fV8UefPbhx+4u/nZzuYkiqXYe1C7c6KWXg9nLO2sfifamA+p3r0cmQRAYCAGzOat6T9PeTV19+/ey3v//0P39z87e///Srr5/9/eRVsXvvSYq6UMe8AkCYUhsTbn9/ZdIgnDaEpKTbbQw6AgBsDm/cjhPVneHuLHFVpeQLx/Dm5L6VNoSk+IHb6esLAEACQlKcyJs+tXFLwgR7v8g8QTiThPvBd0dTWxGS4l8BkLy+AAAkICTFin0jj/nnbMP+wO3ti2+/ffGid/R3VZlvoTUtCUlF/Msk09YXAIAE2aAynNSnzMb5wEUvL9nFkCS84dn7hLzxhzdCLubzv/ARkseMP1xi/6O6dkarYsvrw9jFeUK2jrZ0/x8/oQcJALAGoT1JaXYzJBXm8+hcowEA2DWEJAAAAAEhCQAAQEBIAgAAEBCSAAAABIQkAAAAASEJAABAQEgCAAAQEJIAAAAEhCQAAAABIQkAAEBASAIAABAQkgAAAASEJJwNo36WZVl/tO12IAy/L6jYH7Al/pA0G+cDxXASUTshKcRxfm4/21v+9A9D5xydr82Y7e1ne5eCTiOHl+blz99Nb3inbOwkO8172Vwvn659cbuqzb+vad7jl7thhCTRqM+euG7ukDQZarnI+MCNkBTi7IYk5fokUQ7+8JI2mz7Jnu2z107/vvKepWXN1zrANO9lvXwFFa3Ihtqztv2h69uzDOzra4+q2sHPVlZ1haRxPhjkY/3TWfnxLKR2QlKMKriEhyRVFZi6FJLqRn3/0Zf3hDLloduyRHK2Q1JlB39fo35g40P25wRTcZtuT9vaE6tt7Y9uz6i/wS7Xlh21G2EPSZOhLQvNxnlgbxIhKcYmQ1IbJYekoo0HMCGpKHbx92XtRhJrJCS1XtvaH9+eeWxfW4uUxbRoO21O0sBte37SEJJiEJLSQ1L7DmFCUlHs3u9rGp6RCEnd0Lb2J7QnZq9M17YjdmP+Hzy43Ex1cS0mAAAAAElFTkSuQmCC" alt="" />
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    [2]在服务的onCreate方法里面    获取TelephoneManager
  1. // [1]获取teltphonemanager的实例
    2. 

  2. 		TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
    [3]注册电话的监听
  1. / [2]注册电话的监听
    2. 

  2. 		tm.listen(new MyPhoneStateListener(),
    3. 

  3. 				PhoneStateListener.LISTEN_CALL_STATE);
    [4]定义一个类用来监听电话的状态
  1. // 定义一个类用来监听电话的状态
    2. 

  2. 	private class MyPhoneStateListener extends PhoneStateListener {
    3. 

    4. 

  4. 		// 当电话设置状态发生改变的时候调用
    5. 

  5. 		@Override
    6. 

  6. 		public void onCallStateChanged(int state, String incomingNumber) {
    7. 

    8. 

  8. 			// [3]具体判断一下电话的状态
    9. 

  9. 			switch (state) {
    10. 

  10. 			case TelephonyManager.CALL_STATE_IDLE:// 空闲状态
    11. 

  11. 				if(recorder!=null){
    12. 

  12. 					recorder.stop();
    13. 

  13. 					recorder.reset(); // You can reuse the object by going back to
    14. 

  14. 					// setAudioSource() step
    15. 

  15. 					recorder.release(); // Now the object cannot be reused
    16. 

  16. 				}
    17. 

    18. 

  18. 				
    19. 

  19. 				
    20. 

  20. 				break;
    21. 

  21. 			case TelephonyManager.CALL_STATE_OFFHOOK:// 接听状态
    22. 

    23. 

  23. 				System.out.println("开始录音");
    24. 

  24. 				
    25. 

  25. 				recorder.start(); // Recording is now started
    26. 

  26. 				
    27. 

  27. 				break;
    28. 

  28. 			case TelephonyManager.CALL_STATE_RINGING:// 响铃状态
    29. 

    30. 

  30. 				System.out.println("准备录音机");
    31. 

  31. 				
    32. 

  32. 				try {
    33. 

  33. 					//[1]创建MediaRecorder实例
    34. 

  34. 					recorder = new MediaRecorder();
    35. 

  35. 					//[2]设置音频的来源
    36. 

  36. 					recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    37. 

  37. 					//[3]设置输出的格式
    38. 

  38. 					recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    39. 

  39. 					//[4]设置音频的编码方式
    40. 

  40. 					recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    41. 

  41. 					//[5]设置存放的路径
    42. 

  42. 					recorder.setOutputFile("/mnt/sdcard/luyin.3gp");
    43. 

  43. 					//[6]准备录
    44. 

  44. 					recorder.prepare();
    45. 

  45. 				} catch (IllegalStateException e) {
    46. 

  46. 					// TODO Auto-generated catch block
    47. 

  47. 					e.printStackTrace();
    48. 

  48. 				} catch (IOException e) {
    49. 

  49. 					// TODO Auto-generated catch block
    50. 

  50. 					e.printStackTrace();
    51. 

  51. 				}
    52. 

  52. 				
    53. 

  53. 				break;
    54. 

    55. 

  55. 			}
    56. 

  56. 			super.onCallStateChanged(state, incomingNumber);
    57. 

  57. 		}
    58. 

  58. 	}
   [5]加权限
  1. <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    2. 

  2. 

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    

<uses-permission android:name="android.permission.RECORD_AUDIO"/>
   [6]把开启服务的逻辑放到手机重启的广播中
  1. package com.phone.phonelistener;
    2. 

    3. 

  3. import android.content.BroadcastReceiver;
    4. 

  4. import android.content.Context;
    5. 

  5. import android.content.Intent;
    6. 

    7. 

  7. public class BootReceiver extends BroadcastReceiver {
    8. 

    9. 

  9. 	@Override
    10. 

  10. 	public void onReceive(Context context, Intent intent) {
    11. 

  11. 		
    12. 

  12. 		//服务开启
    13. 

  13. 		Intent intent1 = new Intent(context,PhoneService.class);
    14. 

  14.     	context.startService(intent1);
    15. 

  15. 	}
    16. 

    17. 

  17. }


  1. <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>


  1.  <application
    2. 

  2.         android:allowBackup="true"
    3. 

  3.         android:icon="@drawable/ic_launcher"
    4. 

  4.         android:label="@string/app_name"
    5. 

  5.         android:theme="@style/AppTheme" >
    6. 

  6.         <activity
    7. 

  7.             android:name=".MainActivity"
    8. 

  8.             android:label="@string/app_name" >
    9. 

  9.            <!--  <intent-filter>
    10. 

  10.                 <action android:name="android.intent.action.MAIN" />
    11. 

    12. 

  12.                 <category android:name="android.intent.category.LAUNCHER" />
    13. 

  13.             </intent-filter> -->
    14. 

  14.         </activity>
    15. 

  15.         <service android:name="com.phone.phonelistener.PhoneService"></service>
    16. 

  16.         <receiver android:name="com.phone.phonelistener.BootReceiver">
    17. 

  17.             <intent-filter >
    18. 

  18.                 <action android:name="android.intent.action.BOOT_COMPLETED"/>
    19. 

  19.             </intent-filter>
    20. 

  20.         </receiver>
    21. 

  21.     </application>
4    使用服务注册特殊的广播接收者
    操作特别频繁的广播事件    比如屏幕的解锁和锁屏
    实现步骤
    [1]定义广播接收者    接收屏幕解锁屏幕的事件
  1. package com.phone.registerbroadcast;
    2. 

    3. 

  3. import android.content.BroadcastReceiver;
    4. 

  4. import android.content.Context;
    5. 

  5. import android.content.Intent;
    6. 

    7. 

  7. public class ScreenReceiver extends BroadcastReceiver {
    8. 

    9. 

  9. 	@Override
    10. 

  10. 	public void onReceive(Context context, Intent intent) {
    11. 

  11. 		
    12. 

  12. 		//获取当前事件类型
    13. 

  13. 		String action = intent.getAction();
    14. 

  14. 		if("android.intent.action.SCREEN_OFF".equals(action)){
    15. 

  15. 			System.out.println("说明屏幕锁屏了");
    16. 

  16. 		}else if("android.intent.action.SCREEN_ON".equals(action)){
    17. 

  17. 			System.out.println("说明屏幕解屏了");
    18. 

  18. 		}
    19. 

  19. 	}
    20. 

    21. 

  21. }
    [2]写一个服务    用来注册广播接收者
  1. package com.phone.registerbroadcast;
    2. 

    3. 

  3. import android.app.Service;
    4. 

  4. import android.content.Intent;
    5. 

  5. import android.content.IntentFilter;
    6. 

  6. import android.os.IBinder;
    7. 

    8. 

  8. public class ScreenService extends Service {
    9. 

    10. 

  10. 	 private ScreenReceiver receiver;
    11. 

  11. 	
    12. 

  12. 	@Override
    13. 

  13. 	public IBinder onBind(Intent intent) {
    14. 

  14. 		// TODO Auto-generated method stub
    15. 

  15. 		return null;
    16. 

  16. 	}
    17. 

  17. 	
    18. 

  18. 	@Override
    19. 

  19. 	public void onCreate() {
    20. 

  20. 		//[1]创建ScreenReceiver实例
    21. 

  21. 		receiver = new ScreenReceiver();
    22. 

  22. 		
    23. 

  23. 		//[2]获取IntentFilter 实例 目的是添加action
    24. 

  24.         IntentFilter filter = new IntentFilter();
    25. 

  25.         //[3]动态添加action
    26. 

  26.         filter.addAction("android.intent.action.SCREEN_OFF");
    27. 

  27.         filter.addAction("android.intent.action.SCREEN_ON");
    28. 

  28.         //[4]注册服务
    29. 

  29.         registerReceiver(receiver, filter);
    30. 

  30. 		super.onCreate();
    31. 

  31. 	}
    32. 

  32. 	
    33. 

  33. 	@Override
    34. 

  34. 	public void onDestroy() {
    35. 

  35. 		unregisterReceiver(receiver);
    36. 

  36. 		super.onDestroy();
    37. 

  37. 	}
    38. 

    39. 

  39. }
    [3]在MainActivity的onCreate方法中开启服务
  1. package com.phone.registerbroadcast;
    2. 

    3. 

  3. import android.app.Activity;
    4. 

  4. import android.content.Intent;
    5. 

  5. import android.os.Bundle;
    6. 

    7. 

    8. 

  8. public class MainActivity extends Activity {
    9. 

    10. 

  10.    
    11. 

    12. 

  12. 	@Override
    13. 

  13.     protected void onCreate(Bundle savedInstanceState) {
    14. 

  14.         super.onCreate(savedInstanceState);
    15. 

  15.         setContentView(R.layout.activity_main);
    16. 

  16.         Intent intent = new Intent(this,ScreenReceiver.class);
    17. 

  17. 		startService(intent);
    18. 

  18.     }
    19. 

  19.     
    20. 

  20. }
    [4]配置服务
  1. <service android:name="com.phone.registerbroadcast.ScreenService"></service>
5    bindService开启服务
    [1]第一次点击按钮 会执行服务的onCreate方法和onBind方法
    [2]当onBind方法返回null的时候onServiceConnected方法是不执行的
    [3]第二次点击按钮    服务没有响应
    [4]不求同时生 但求同时死    指的是调用者和服务之间
    [5]服务不可以多次解绑    多次解绑会报异常
    [6]通过bind方式开启服务    服务不能在设置页面找到    相当于是一个隐形的服务
6    为什么要引入bindService
    目的是为了调用服务里的方法
7    通过bindservice方式调用 服务方法里面的过程
    [1]在服务的内部定义一个方法    让activity调用
    [2]在服务的内容定义一个中间人对象(IBinder)
    [3]把定义的中间人对象在onBind方法里面返回
    [4]在mainactivity的oncreate方法里面调用bindservice的目的是为了获取我们定义的中间人对象
    [5]获取中间人对象
    [6]拿到中间人对象就可以间接调用到服务里面的方法
    [7]当Activity销毁的时候解绑服务
  1. package com.phone.ban;
    2. 

    3. 

  3. import android.app.Service;
    4. 

  4. import android.content.Intent;
    5. 

  5. import android.os.Binder;
    6. 

  6. import android.os.IBinder;
    7. 

  7. import android.widget.Toast;
    8. 

    9. 

  9. public class BanZhangService extends Service {
    10. 

  10. 	
    11. 

  11. 	//把定义的中间人对象返回
    12. 

  12. 	@Override
    13. 

  13. 	public IBinder onBind(Intent intent) {
    14. 

  14. 		
    15. 

  15. 		return new MyBinder();
    16. 

  16. 	}
    17. 

    18. 

  18. 	public void banZhang(int money) {
    19. 

  19. 		if(money > 1000){
    20. 

  20. 			Toast.makeText(getApplicationContext(), "我是领导 把证给你办了", 1).show();
    21. 

  21. 		}else{
    22. 

  22. 			Toast.makeText(getApplicationContext(), "这点钱还想办事....", 1).show();
    23. 

  23. 		}
    24. 

  24. 	}
    25. 

  25. 	
    26. 

  26. 	//[1]定义中间人对象
    27. 

  27. 	public class MyBinder extends Binder{
    28. 

  28. 		public void callBanZheng(int money){
    29. 

  29. 			//调用办证方法
    30. 

  30. 			banZhang(money);
    31. 

  31. 		}
    32. 

  32. 	}
    33. 

    34. 

  34. }


  1. package com.phone.ban;
    2. 

    3. 

  3. import android.app.Activity;
    4. 

  4. import android.content.ComponentName;
    5. 

  5. import android.content.Intent;
    6. 

  6. import android.content.ServiceConnection;
    7. 

  7. import android.os.Bundle;
    8. 

  8. import android.os.IBinder;
    9. 

  9. import android.view.View;
    10. 

    11. 

  11. import com.phone.ban.BanZhangService.MyBinder;
    12. 

    13. 

    14. 

  14. public class MainActivity extends Activity {
    15. 

  15. 	
    16. 

  16. 	private MyConn conn;
    17. 

  17. 	private MyBinder myBinder;//定义的中间人对象
    18. 

  18. 	
    19. 

  19.     @Override
    20. 

  20.     protected void onCreate(Bundle savedInstanceState) {
    21. 

  21.         super.onCreate(savedInstanceState);
    22. 

  22.         setContentView(R.layout.activity_main);
    23. 

  23.         
    24. 

  24.         Intent intent = new Intent(this,BanZhangService.class);
    25. 

  25.         //绑定服务
    26. 

  26.         conn = new MyConn();
    27. 

  27.         bindService(intent, conn, BIND_AUTO_CREATE);
    28. 

  28.         
    29. 

  29.     }
    30. 

  30.     
    31. 

  31.     //点击按钮调用服务里办证的方法
    32. 

  32.     public void click(View v){
    33. 

  33.     	myBinder.callBanZheng(1001);
    34. 

  34.     }
    35. 

  35.     
    36. 

  36.     //监视服务的状态
    37. 

  37.     private class MyConn implements ServiceConnection{
    38. 

    39. 

    40. 

  40. 		//当服务连接成功调用
    41. 

  41. 		@Override
    42. 

  42. 		public void onServiceConnected(ComponentName name, IBinder service) {
    43. 

  43. 			myBinder = (MyBinder) service;
    44. 

  44. 		}
    45. 

    46. 

  46. 		@Override
    47. 

  47. 		public void onServiceDisconnected(ComponentName name) {
    48. 

  48. 			
    49. 

  49. 		}
    50. 

  50.     }
    51. 

  51.     
    52. 

  52.     @Override
    53. 

  53.     protected void onDestroy() {
    54. 

  54.     	//当activity销毁的时候解绑服务
    55. 

  55.     	unbindService(conn);
    56. 

  56.     	super.onDestroy();
    57. 

  57.     }
    58. 

    59. 

    60. 

  60. }
8    通过接口方式调用服务里面的方法
    接口可以隐藏代码内部的细节    让程序员暴露自己只想暴露的方法
    [1]定义一个接口    把想暴露的方法都定义在接口里面
    [2]我们定义的中间人对象事项我们自己定义的接口
    [3]在获取中间人对象的时候
  1. myBinder = (Iservice) service;
补充：混合方式开启服务
    需求：既想让服务在后台长期运行    又想调用服务里面的方法
    [1]先调用startService方法开启服务    能够保证服务在后台长期运行
    [2]调用bindService方法    去获取中间人对象
    [3]调用unbindSerivce    解绑服务
    [4]调用stopSerivce
9    百度音乐盒框架
  1. package com.phone.baidumusic;
    2. 

    3. 

  3. import android.content.ComponentName;
    4. 

  4. import android.content.Intent;
    5. 

  5. import android.content.ServiceConnection;
    6. 

  6. import android.os.Bundle;
    7. 

  7. import android.os.IBinder;
    8. 

  8. import android.app.Activity;
    9. 

  9. import android.view.View;
    10. 

    11. 

    12. 

  12. public class MainActivity extends Activity {
    13. 

  13. 	
    14. 

  14. 	//中间人对象
    15. 

  15. 	private IService iService;
    16. 

  16. 	
    17. 

  17. 	private MyConn conn;
    18. 

  18. 	
    19. 

  19.     @Override
    20. 

  20.     protected void onCreate(Bundle savedInstanceState) {
    21. 

  21.         super.onCreate(savedInstanceState);
    22. 

  22.         setContentView(R.layout.activity_main);
    23. 

  23.         
    24. 

  24.         //混合方式开启服务
    25. 

  25.         //[1]先调用startservice	目的是可以保证服务在后台长期运行
    26. 

  26.         Intent intent = new Intent(this, MusicService.class);
    27. 

  27.         startService(intent);
    28. 

  28.         //[2]调用bindservice	目的为了获取我们定义的中间人对象	就可以间接的调用服务里面的方法了
    29. 

  29.         conn = new MyConn();
    30. 

  30.         bindService(intent, conn, BIND_AUTO_CREATE);
    31. 

  31.         
    32. 

  32.     }
    33. 

  33.     
    34. 

  34.     @Override
    35. 

  35.     protected void onDestroy() {
    36. 

  36.     	//当Activity销毁的时候	解绑服务
    37. 

  37.     	unbindService(conn);
    38. 

  38.     	super.onDestroy();
    39. 

  39.     }
    40. 

  40.     
    41. 

  41.     //点击按钮	播放音乐
    42. 

  42.     public void click1(View v){
    43. 

  43.     	iService.callPlayMusic();
    44. 

  44.     }
    45. 

  45.     
    46. 

  46.   //点击按钮	暂停音乐
    47. 

  47.     public void click2(View v){
    48. 

  48.     	iService.callPauseMusic();
    49. 

  49.     }
    50. 

  50.     
    51. 

  51.   //点击按钮	继续播放音乐
    52. 

  52.     public void click3(View v){
    53. 

  53.     	iService.callRePlayMusic();
    54. 

  54.     }
    55. 

  55.     
    56. 

  56.     //监听服务的状态
    57. 

  57.     private class MyConn implements ServiceConnection{
    58. 

  58.     	
    59. 

    60. 

  60. 		@Override
    61. 

  61. 		public void onServiceConnected(ComponentName name, IBinder service) {
    62. 

  62. 			iService = (IService) service;
    63. 

  63. 		}
    64. 

    65. 

  65. 		@Override
    66. 

  66. 		public void onServiceDisconnected(ComponentName name) {
    67. 

  67. 			
    68. 

  68. 		}
    69. 

  69.     	
    70. 

  70.     }
    71. 

  71. }


  1. package com.phone.baidumusic;
    2. 

    3. 

  3. import android.app.Service;
    4. 

  4. import android.content.Intent;
    5. 

  5. import android.os.Binder;
    6. 

  6. import android.os.IBinder;
    7. 

  7. import android.view.View;
    8. 

    9. 

  9. public class MusicService extends Service {
    10. 

    11. 

  11. 	@Override
    12. 

  12. 	public IBinder onBind(Intent intent) {
    13. 

  13. 		return new MyBinder();
    14. 

  14. 	}
    15. 

    16. 

  16. 	@Override
    17. 

  17. 	public void onCreate() {
    18. 

  18. 		super.onCreate();
    19. 

  19. 	}
    20. 

    21. 

  21. 	@Override
    22. 

  22. 	public void onDestroy() {
    23. 

  23. 		super.onDestroy();
    24. 

  24. 	}
    25. 

    26. 

  26. 	// 播放音乐
    27. 

  27. 	public void playMusic() {
    28. 

  28. 		// TODO 等讲完多媒体 再完善该案例
    29. 

  29. 		System.out.println("音乐播放了");
    30. 

  30. 	}
    31. 

    32. 

  32. 	// 暂停音乐
    33. 

  33. 	public void pauseMusic() {
    34. 

  34. 		// TODO 等讲完多媒体 再完善该案例
    35. 

  35. 		System.out.println("音乐暂停了");
    36. 

  36. 	}
    37. 

    38. 

  38. 	// 继续播放音乐
    39. 

  39. 	public void rePlayMusic() {
    40. 

  40. 		// TODO 等讲完多媒体 再完善该案例
    41. 

  41. 		System.out.println("音乐继续播放了");
    42. 

  42. 	}
    43. 

    44. 

  44. 	// [1]在服务的内部定义一个中间对象(IBinder)
    45. 

  45. 	private class MyBinder extends Binder implements IService{
    46. 

    47. 

  47. 		@Override
    48. 

  48. 		public void callPlayMusic() {
    49. 

  49. 			playMusic();
    50. 

  50. 		}
    51. 

    52. 

  52. 		@Override
    53. 

  53. 		public void callPauseMusic() {
    54. 

  54. 			pauseMusic();
    55. 

  55. 		}
    56. 

    57. 

  57. 		@Override
    58. 

  58. 		public void callRePlayMusic() {
    59. 

  59. 			rePlayMusic();
    60. 

  60. 		}
    61. 

    62. 

  62. 	}
    63. 

  63. }


  1. package com.phone.baidumusic;
    2. 

    3. 

    4. 

  4. public interface IService {
    5. 

  5. 	public void callPlayMusic();
    6. 

  6. 	public void callPauseMusic();
    7. 

  7. 	public void callRePlayMusic();
    8. 

  8. }


  1. <service android:name="com.phone.baidumusic.MusicService"></service>
10    aidl介绍
    本地服务:运行自己应用里面的服务
    远程服务:运行在其他应用里面的服务
    实现进程间通信    IPC
    aidl:Android Interface defined Language    安卓接口定义语言
            专门是用来解决进程间通信的
    
    总结：使用aidl的步骤
   [1]把IService.java文件变成一个aidl文件
   [2]adil这个语言不认识public 把public去掉
   [3]自动生成一个IService.java文件 系统自动帮助我们生成一个类Stub(在gen目录下)
   [4]我们自己定义的中间人对象直接继承Stub
   [5]保证2应用的aidl文件是同一个    保证aidl文件所在的包名相同
   [6]获取中间人对象的方式不一样了
    IService  = Stub.asInterface(service);
11    aidl的应用场景
    比如    支付宝

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