1). development/samples/ApiDemos/src/com/example/android/apis/app/*.aidl, Localservice**.java RemoteService*.java, ServiceStartArguments*.java2). 深入解析Android 的AIDL Interface （高焕堂）http://wenku.baidu.com/view/920f92ea998fcc22bcd10d28.html 3). http://wzw19191.blog.163.com/blog/static/131135470201051675520369/在android中，进程通讯是通过aidl机制来完成的。aidl模型如下： |<--------------------aidl---------------------->| client端 -->proxy ----------parcel数据包-------- stub<---server端也就是说：proxy+parcel+stub构成了aidl.只不过，proxy运行在客户进程，而 stub运行在服务端进程。当你通过aidl去访问服务端时，客户端会阻塞在proxy,服务端处理完后，通知proxy返回。补充1：应用程序获取相关服务的代码：private AlarmManager getAlarmManager() { synchronized (sSync) { if (sAlarmManager == null) { IBinder b = ServiceManager.getService(ALARM_SERVICE); IAlarmManager service = IAlarmManager.Stub.asInterface(b); sAlarmManager = new AlarmManager(service); } } return sAlarmManager; }补充2：AIDL文件生成的java文件中的Stub 类。public static abstract class Stub extends android.os.Binder implements android.net.softap.ISoftApManager { private static final java.lang.String DESCRIPTOR = "android.net.softap.ISoftApManager"; /** Construct the stub at attach it to the interface. */ public Stub() { this.attachInterface(this, DESCRIPTOR); } /** * Cast an IBinder object into an ISoftApManager interface, generating a * proxy if needed. */ public static android.net.softap.ISoftApManager asInterface( android.os.IBinder obj) { if ((obj == null)) { return null; } android.os.IInterface iin = (android.os.IInterface) obj .queryLocalInterface(DESCRIPTOR); if (((iin != null) && (iin instanceof android.net.softap.ISoftApManager))) { return ((android.net.softap.ISoftApManager) iin); } return new android.net.softap.ISoftApManager.Stub.Proxy(obj); } public android.os.IBinder asBinder() { return this; } @Override public boolean onTransact(int code, android.os.Parcel data, android.os.Parcel reply, int flags) throws android.os.RemoteException { switch (code) { case INTERFACE_TRANSACTION: { reply.writeString(DESCRIPTOR); return true; } case TRANSACTION_getApEnabledState: { data.enforceInterface(DESCRIPTOR); int _result = this.getApEnabledState(); reply.writeNoException(); reply.writeInt(_result); return true; } case TRANSACTION_setApEnabled: { data.enforceInterface(DESCRIPTOR); boolean _arg0; _arg0 = (0 != data.readInt()); boolean _result = this.setApEnabled(_arg0); reply.writeNoException(); reply.writeInt(((_result) ? (1) : (0))); return true; } case TRANSACTION_setApSettings: { data.enforceInterface(DESCRIPTOR); android.net.softap.SoftApConfigure _arg0; if ((0 != data.readInt())) { _arg0 = android.net.softap.SoftApConfigure.CREATOR .createFromParcel(data); } else { _arg0 = null; } boolean _result = this.setApSettings(_arg0); reply.writeNoException(); reply.writeInt(((_result) ? (1) : (0))); return true; } case TRANSACTION_getApSettings: { data.enforceInterface(DESCRIPTOR); android.net.softap.SoftApConfigure _result = this .getApSettings(); reply.writeNoException(); if ((_result != null)) { reply.writeInt(1); _result .writeToParcel( reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE); } else { reply.writeInt(0); } return true; } } return super.onTransact(code, data, reply, flags); } private static class Proxy implements android.net.softap.ISoftApManager { private android.os.IBinder mRemote; Proxy(android.os.IBinder remote) { mRemote = remote; } public android.os.IBinder asBinder() { return mRemote; } public java.lang.String getInterfaceDescriptor() { return DESCRIPTOR; } public int getApEnabledState() throws android.os.RemoteException { android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); int _result; try { _data.writeInterfaceToken(DESCRIPTOR); mRemote.transact(Stub.TRANSACTION_getApEnabledState, _data, _reply, 0); _reply.readException(); _result = _reply.readInt(); } finally { _reply.recycle(); _data.recycle(); } return _result; } public boolean setApEnabled(boolean enable) throws android.os.RemoteException { android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); boolean _result; try { _data.writeInterfaceToken(DESCRIPTOR); _data.writeInt(((enable) ? (1) : (0))); mRemote.transact(Stub.TRANSACTION_setApEnabled, _data, _reply, 0); _reply.readException(); _result = (0 != _reply.readInt()); } finally { _reply.recycle(); _data.recycle(); } return _result; } public boolean setApSettings( android.net.softap.SoftApConfigure datas) throws android.os.RemoteException { android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); boolean _result; try { _data.writeInterfaceToken(DESCRIPTOR); if ((datas != null)) { _data.writeInt(1); datas.writeToParcel(_data, 0); } else { _data.writeInt(0); } mRemote.transact(Stub.TRANSACTION_setApSettings, _data, _reply, 0); _reply.readException(); _result = (0 != _reply.readInt()); } finally { _reply.recycle(); _data.recycle(); } return _result; } public android.net.softap.SoftApConfigure getApSettings() throws android.os.RemoteException { android.os.Parcel _data = android.os.Parcel.obtain(); android.os.Parcel _reply = android.os.Parcel.obtain(); android.net.softap.SoftApConfigure _result; try { _data.writeInterfaceToken(DESCRIPTOR); mRemote.transact(Stub.TRANSACTION_getApSettings, _data, _reply, 0); _reply.readException(); if ((0 != _reply.readInt())) { _result = android.net.softap.SoftApConfigure.CREATOR .createFromParcel(_reply); } else { _result = null; } } finally { _reply.recycle(); _data.recycle(); } return _result; } } static final int TRANSACTION_getApEnabledState = (IBinder.FIRST_CALL_TRANSACTION + 0); static final int TRANSACTION_setApEnabled = (IBinder.FIRST_CALL_TRANSACTION + 1); static final int TRANSACTION_setApSettings = (IBinder.FIRST_CALL_TRANSACTION + 2); static final int TRANSACTION_getApSettings = (IBinder.FIRST_CALL_TRANSACTION + 3); }补充3：通常服务程序该Stub类，也即间接继承了 android.os.Binder，进而可以作为 SystemManager.addService 等的参数而使用。
