// IOSPCallback.aidl package org.opensmartpos.poshal; interface IOSPCallback { void onQrcodeDecoded(String qrcode); void onIdCardFound(String idCardData); void onCardFound(int sak, String uid); void onCardLived(boolean v); } // IOSPInterface.aidl package org.opensmartpos.poshal; import org.opensmartpos.poshal.IOSPCallback; interface IOSPInterface { void registerCallback(IOSPCallback cb); void unregisterCallback(IOSPCallback cb); void installApp(String packageName, String apkFilePath); }写出调用上述2个aidl的方法，使用kotlin

首先需要在项目的 `build.gradle` 文件中添加以下依赖：

implementation 'com.android.support:support-annotations:28.0.0'

然后，在 Kotlin 中调用 `IOSPInterface` 的方法可以参考以下代码：

class MainActivity : AppCompatActivity() {

    private val serviceConnection = object : ServiceConnection {
        override fun onServiceConnected(name: ComponentName?, service: IBinder?) {
            val ospInterface = IOSPInterface.Stub.asInterface(service)
            registerCallback(ospInterface)
        }

        override fun onServiceDisconnected(name: ComponentName?) {
            // Do something when service disconnected
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val intent = Intent()
        intent.component = ComponentName("org.opensmartpos.poshal", "org.opensmartpos.poshal.OSPService")
        bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE)
    }

    private fun registerCallback(ospInterface: IOSPInterface) {
        val callback = object : IOSPCallback.Stub() {
            override fun onQrcodeDecoded(qrcode: String?) {
                // Do something when qrcode is decoded
            }

            override fun onIdCardFound(idCardData: String?) {
                // Do something when id card is found
            }

            override fun onCardFound(sak: Int, uid: String?) {
                // Do something when card is found
            }

            override fun onCardLived(v: Boolean) {
                // Do something when card is lived
            }
        }

        ospInterface.registerCallback(callback)
    }

    private fun unregisterCallback(ospInterface: IOSPInterface) {
        val callback = object : IOSPCallback.Stub() {
            override fun onQrcodeDecoded(qrcode: String?) {
                // Do something when qrcode is decoded
            }

            override fun onIdCardFound(idCardData: String?) {
                // Do something when id card is found
            }

            override fun onCardFound(sak: Int, uid: String?) {
                // Do something when card is found
            }

            override fun onCardLived(v: Boolean) {
                // Do something when card is lived
            }
        }

        ospInterface.unregisterCallback(callback)
    }

    private fun installApp(ospInterface: IOSPInterface, packageName: String, apkFilePath: String) {
        ospInterface.installApp(packageName, apkFilePath)
    }

    override fun onDestroy() {
        super.onDestroy()
        unbindService(serviceConnection)
    }
}

需要注意的是，需要在 `AndroidManifest.xml` 文件中声明以下权限：

<uses-permission android:name="org.opensmartpos.permission.OSP_SERVICE" />