aidl 中通过RemoteCallbackList 运用到的回调机制： service回调 android aidl 回调

发布时间：2018年04月10日 19:07:05分享人:不帅你报警来源:互联网19
说明：我没有写实例代码，直接拿项目中的代码，有点懒了，这里我省略贴出两个aidl文件。

TtsService extends Service

[java]view plaincopy

privatefinalRemoteCallbackList<ITtsCallback>mCallbacks

=newRemoteCallbackList<ITtsCallback>();

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privatefinalandroid.speech.tts.ITts.StubmBinder=newStub(){

publicintregisterCallback(StringpackageName,ITtsCallbackcb){

if(cb!=null){

mCallbacks.register(cb);

mCallbacksMap.put(packageName,cb);

returnTextToSpeech.SUCCESS;

}

returnTextToSpeech.ERROR;

}

publicintunregisterCallback(StringpackageName,ITtsCallbackcb){

if(cb!=null){

mCallbacksMap.remove(packageName);

mCallbacks.unregister(cb);

returnTextToSpeech.SUCCESS;

}

returnTextToSpeech.ERROR;

}

publicintspeak(StringcallingApp,Stringtext,intqueueMode,String[]params){

ArrayList<String>speakingParams=newArrayList<String>();

if(params!=null){

speakingParams=newArrayList<String>(Arrays.asList(params));

}

returnthis.speak(callingApp,text,queueMode,speakingParams);

}

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privatevoiddispatchProcessingCompletedCallback(StringpackageName){

ITtsCallbackcb=mCallbacksMap.get(packageName);

if(cb==null){

return;

}

//Log.i("TtsService","TTScallback:dispatchstarted");

//Broadcasttoallclientsthenewvalue.

finalintN=mCallbacks.beginBroadcast();

try{

cb.processingCompleted();

}catch(RemoteExceptione){

//TheRemoteCallbackListwilltakecareofremoving

//thedeadobjectforus.

}

mCallbacks.finishBroadcast();

//Log.i("TtsService","TTScallback:dispatchcompletedto"+N);

}

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@Override

publicvoidonDestroy(){

super.onDestroy();

//TODOreplacethecalltostopAll()withamethodtoclearabsolutelyallupcoming

//usesofthenativesynth,includingsynthesistoafile,anddeletefilesforwhich

//synthesiswasnotcomplete.

stopAll();

//Unregisterallcallbacks.

mCallbacks.kill();

}

在activity中

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mITtscallback=newITtsCallback.Stub(){

publicvoidprocessingCompleted()throwsRemoteException{

if(listener!=null){

listener.onProcessingCompleted();

}

}

};

result=mITts.registerCallback(mPackageName,mITtscallback);

上面只是一个贴代码没有做任何说明，基本的意思我想大家也能通过代码来看懂。

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//intN=mCallbacks.beginBroadcast();

//try{

//for(inti=0;i<N;i++){

//mCallbacks.getBroadcastItem(i).showResult(mSlot);

//}

//}catch(RemoteExceptione){

//Log(""+e);

//}

//mCallbacks.finishBroadcast();

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

上传一个写的工作中用到的demo

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packagecom.pateo.aidl;

interfaceICallback{

voidshowResult(Stringresult);

}

packagecom.pateo.aidl;

importcom.pateo.aidl.ICallback;

interfaceIMyService{

voidinit(StringpackageName,Stringslot);

voidregisterCallback(StringpackageName,ICallbackcb);

voidunregisterCallback(StringpackageName,ICallbackcb);

}

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packagecom.pateo.service;

importjava.util.HashMap;

importandroid.app.Service;

importandroid.content.Intent;

importandroid.os.Handler;

importandroid.os.IBinder;

importandroid.os.Message;

importandroid.os.RemoteCallbackList;

importandroid.os.RemoteException;

importcom.pateo.aidl.ICallback;

importcom.pateo.aidl.IMyService;

publicclassVuiServiceextendsService{

privateRemoteCallbackList<ICallback>mCallbacks=newRemoteCallbackList<ICallback>();

privateHashMap<String,ICallback>mCallbacksMap=newHashMap<String,ICallback>();

privateStringmSlot="";

privateStringmPackageName="";

@Override

publicvoidonStart(Intentintent,intstartId){

super.onStart(intent,startId);

}

@Override

publicIBinderonBind(Intentintent){

returnremoteBinder;

}

@Override

publicvoidonDestroy(){

mHandler.removeMessages(0);

mCallbacks.kill();

super.onDestroy();

}

@Override

publicbooleanonUnbind(Intentintent){

returnsuper.onUnbind(intent);

}

publicvoidonRebind(Intentintent){

super.onRebind(intent);

}

privateIMyService.StubremoteBinder=newIMyService.Stub(){

@Override

publicvoidinit(StringpackageName,Stringslot)throwsRemoteException{

mSlot=slot;

mPackageName=packageName;

//?￡?a?aê????ˉê?±e￡??aà?μ?4000oá???àμ±óú??óèμ?ê?±e1y3ìμ?ê±??￡??a???éò??úê?±e?á1?à???è￥μ÷ó?

mHandler.sendEmptyMessageDelayed(0,4000);

}

@Override

publicvoidunregisterCallback(StringpackageName,ICallbackcb){

if(cb!=null){

mCallbacks.unregister(cb);

mCallbacksMap.remove(packageName);

}

}

//°ü??×￠2áμ?·?ê?￡??a?ù?í±ü?aá?oü?àó?ó?×￠2á??è￥??μ÷￡??aà?í?1yó?ó???óèμ?packageNameà??￥????ì???μ÷??ò???ó?ó?μ?callback

@Override

publicvoidregisterCallback(StringpackageName,ICallbackcb){

if(cb!=null){

mCallbacks.register(cb);

mCallbacksMap.put(packageName,cb);

}

}

};

//?aà?í?1yó?ó???óèμ?packageNameà??￥????ì???μ÷??ò???ó?ó?μ?callback

privatevoiddispatchProcessingCompletedCallback(){

ICallbackcb=mCallbacksMap.get(mPackageName);

if(cb==null){

return;

}

finalintN=mCallbacks.beginBroadcast();

try{

cb.showResult(mSlot);

}catch(RemoteExceptione){

}

mCallbacks.finishBroadcast();

}

privateHandlermHandler=newHandler(){

@Override

publicvoidhandleMessage(Messagemsg){

dispatchProcessingCompletedCallback();

super.handleMessage(msg);

}

};

}

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packagecom.pateo;

importcom.pateo.service.VuiService;

importcom.pateo.aidl.ICallback;

importcom.pateo.aidl.IMyService;

importcom.pateo.R;

importandroid.app.Activity;

importandroid.content.ComponentName;

importandroid.content.Context;

importandroid.content.Intent;

importandroid.content.ServiceConnection;

importandroid.os.Bundle;

importandroid.os.Handler;

importandroid.os.IBinder;

importandroid.os.Message;

importandroid.os.RemoteException;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

importandroid.widget.TextView;

publicclassAppActivityextendsActivity{

TextViewtv;

IMyServicemyservice;

StringmResult;

@Override

publicvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

tv=(TextView)findViewById(R.id.tv);

//?￡?a°?mode?ü

Buttonbtn=(Button)findViewById(R.id.startBtn);

btn.setOnClickListener(newOnClickListener(){

@Override

publicvoidonClick(Viewv){

Intentintent=newIntent(AppActivity.this,VuiService.class);

bindService(intent,serviceConnection,Context.BIND_AUTO_CREATE);

}

});

}

privateServiceConnectionserviceConnection=newServiceConnection(){

@Override

publicvoidonServiceDisconnected(ComponentNamename){

myservice=null;

}

@Override

publicvoidonServiceConnected(ComponentNamename,IBinderservice){

myservice=IMyService.Stub.asInterface(service);

try{

if(myservice!=null){

myservice.registerCallback("com.pateo",mCallback);

myservice.init("com.pateo","??ìy|????");//?aá?ó?ò??ò?ü?óê?μ??aD??êoó°??aá????ê2?è?2?2?￡??a?ù?í?éò?·??§D?ìá??ê?±e

//?aà??1?éò?×?°?ò????êì?ò2·￠1yè￥￡?2?è?2?2??￡

}

}catch(RemoteExceptione){

}

}

};

/**

*serviceμ???μ÷·?·?

*/

privateICallback.StubmCallback=newICallback.Stub(){

//μè?yê?±e?á1?è?oóshow3?à?

@Override

aidl 中通过RemoteCallbackList 运用到的回调机制： service回调 android aidl 回调
publicvoidshowResult(Stringresult){

try{

mResult=result;

Messagemsgget=Message.obtain();

msgget.what=1;

mHandler.sendMessage(msgget);

}catch(Exceptione){

}

}

};

privateHandlermHandler=newHandler(){

@Override

publicvoidhandleMessage(Messagemsg){

super.handleMessage(msg);

switch(msg.what){

case1:

tv.setText("result:"+mResult);

break;

}

}

};

@Override

protectedvoidonDestroy(){

unbindService(serviceConnection);

super.onDestroy();

}

}

来源：http://blog.csdn.net/jianguo_liao19840726/article/details/6729598

  
aidl 回调 

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