Android(安卓)使用 AIDL 实现进程间通信，使用基本类型作为输入和输出参数

RemoteService

1. 定义 IRemoteService.aidl

packagecom.zaoqibu.remoteservice;//Declareanynon-defaulttypesherewithimportstatementsinterfaceIRemoteService{/**RequesttheprocessIDofthisservice,todoevilthingswithit.*/intgetPid();/**DemonstratessomebasictypesthatyoucanuseasparametersandreturnvaluesinAIDL.*/voidbasicTypes(intanInt,longaLong,booleanaBoolean,floataFloat,doubleaDouble,StringaString);}

定义了两个方法，输入和输出参数都是简单类型（int, long, boolean, float, double, String）。
编译程序，将会在 build/generated/ 目录下生成 IRemoteService.java 的文件，里面有 IRemoteService.Stub 服务的存根代理类。

2. 创建服务 RemoteService 类

publicclassRemoteServiceextendsService{privatestaticfinalStringTAG="RemoteService";@OverridepublicvoidonCreate(){super.onCreate();}@OverridepublicIBinderonBind(Intentintent){returnbinder;}privatefinalIRemoteService.Stubbinder=newIRemoteService.Stub(){publicintgetPid(){returnProcess.myPid();}publicvoidbasicTypes(intanInt,longaLong,booleanaBoolean,floataFloat,doubleaDouble,StringaString){Stringstr=String.format("anInt:%d,aLong:%d,aBoolean:%b,aFloat:%f,aDouble:%f,aString:%s",anInt,aLong,aBoolean,aFloat,aDouble,aString);Log.i(TAG,str);}};}

实现存根代理类 IRemoteService.Stub。

3. 在 AndroidManifest.xml 中声明 RemoteService

<serviceandroid:name=".RemoteService"android:process=":remote"><intent-filter><!--Thesearetheinterfacessupportedbytheservice,whichyoucanbindto.--><actionandroid:name="com.zaoqibu.remoteservice.IRemoteService"/></intent-filter></service>

Client

1. 从 RemoteService 工程中拷贝 IRemoteService.aidl 文件

保持原路径

2. 调用 IRemoteService 方法。

publicclassMainActivityextendsActionBarActivity{privatestaticfinalStringTAG="MainActivity";privateIRemoteServiceiremoteService;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);bindService(newIntent(IRemoteService.class.getName()),serviceConnection,BIND_AUTO_CREATE);}privateServiceConnectionserviceConnection=newServiceConnection(){//CalledwhentheconnectionwiththeserviceisestablishedpublicvoidonServiceConnected(ComponentNameclassName,IBinderservice){//FollowingtheexampleaboveforanAIDLinterface,//thisgetsaninstanceoftheIRemoteInterface,whichwecanusetocallontheserviceiremoteService=IRemoteService.Stub.asInterface(service);}//CalledwhentheconnectionwiththeservicedisconnectsunexpectedlypublicvoidonServiceDisconnected(ComponentNameclassName){Log.e(TAG,"Servicehasunexpectedlydisconnected");iremoteService=null;}};publicvoidonRemoteServiceProcessIDClick(Viewview){intprocessID=0;try{processID=iremoteService.getPid();iremoteService.basicTypes(1,2,true,3.3f,4.4,"hello");}catch(RemoteExceptione){e.printStackTrace();}TextViewremoteServiceProcessID=(TextView)findViewById(R.id.remoteServiceProcessID);remoteServiceProcessID.setText(String.valueOf(processID));}}

RemoteService

1. 定义 IRemoteService.aidl

2. 创建服务 RemoteService 类

3. 在 AndroidManifest.xml 中声明 RemoteService

Client

1. 从 RemoteService 工程中拷贝 IRemoteService.aidl 文件

2. 调用 IRemoteService 方法。

3. 运行

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