一.服务端

1.创建aidl文件，然后记得build下生成java文件

package com.example.aidlservice31;// Declare any non-default types here with import statementsinterface IMyAidlServer {// 接收一个字符串参数void setData(String value);// 返回一个字符串String getData();
}

2.创建远程MyService.class

class MyService : Service() {private val mBinder by lazy { MyBinder() }override fun onBind(intent: Intent): IBinder {return mBinder}inner class MyBinder : IMyAidlServer.Stub() {private var mData: String = "李小龙"override fun setData(value: String) {Log.e("yjj", "客户端发来的数据== $value")mData = value}override fun getData() = mData+"返回的数据"}
}

3.在AndroidManifest配置MyService

        <serviceandroid:name=".MyService"//远程可访问android:exported="true"//开启远端进程android:process=":remote"><intent-filter><category android:name="android.intent.category.DEFAULT" />//客户端通过action绑定MyService<action android:name="com.example.aidlservice31.MyService" /></intent-filter></service>

二、客户端

1.复制服务端aidl文件夹，啥也别改，然后build下，自动生成java文件。

2.绑定服务，传输数据

class MainActivity : AppCompatActivity() {private var mServer: IMyAidlServer? = nulloverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContentView(R.layout.activity_main)initView()}private var mNumber = 0private fun initView() {val tvGetDataValue: TextView = findViewById(R.id.tvGetDataValue)//绑定服务器findViewById<TextView>(R.id.tvBindService).setOnClickListener {setConnection()}//传递数据给服务端findViewById<TextView>(R.id.tvSetData).setOnClickListener {mNumber++mServer?.data = mNumber.toString()Log.e("yjj", "setData == " + mServer?.data)}//获取服务端数据findViewById<TextView>(R.id.tvGetData).setOnClickListener {Log.e("yjj", "getData == " + mServer?.data)mServer?.data.let {tvGetDataValue.text = it}Toast.makeText(this,tvGetDataValue.text,Toast.LENGTH_LONG).show()}}private val mMyServiceConnection = object : ServiceConnection {override fun onServiceConnected(name: ComponentName?, remoteService: IBinder?) {Log.e("yjj", "绑定远程服务成功！")mServer = IMyAidlServer.Stub.asInterface(remoteService)}override fun onServiceDisconnected(name: ComponentName?) {mServer = null}}private fun setConnection() {try {val intent = Intent()// AIDLServer 项目的包名（applicationId）// AIDLServer 项目中注册的服务的全路径intent.component =ComponentName("com.example.aidlservice31", "com.example.aidlservice31.MyService")intent.flags = Intent.FLAG_ACTIVITY_NEW_TASKvar issuccess = bindService(intent, mMyServiceConnection, Context.BIND_AUTO_CREATE)Log.e("yjj", "开始绑定服务器issuccess=$issuccess")} catch (e: SecurityException) {e.printStackTrace()}}override fun onDestroy() {super.onDestroy()unbindService(mMyServiceConnection)}
}

好像有些手机是不行的，比如华为荣耀v30。不行的话，换个手机试试吧。