一、创建 AIDL 文件

1、创建 AIDL 目录

在 Android Studio 工程中 , 创建 aidl 文件 ;

右键点击 main 目录 , 选择 " New / Directory " ,

选择创建 " aidl " 目录 ,

创建好的 aidl 目录如下 :

2、创建 AIDL 文件

右键点击 " aidl " 目录 , 选择 " New / AIDL / AIDL File " 文件 ;

弹出对话框 , 输入 AIDL 接口名称 , 输入完毕后 , 选择 " Finish " 选项 ;

3、创建 Parcelable 类

创建 Parcelable 类 :

package kim.hsl.aidl_demo;import android.os.Parcel;
import android.os.Parcelable;public class Student implements Parcelable {private String name;public Student(String name) {this.name = name;}public String getName() {return name;}public void setName(String name) {this.name = name;}protected Student(Parcel in) {name = in.readString();}public static final Creator<Student> CREATOR = new Creator<Student>() {@Overridepublic Student createFromParcel(Parcel in) {return new Student(in);}@Overridepublic Student[] newArray(int size) {return new Student[size];}};@Overridepublic int describeContents() {return 0;}@Overridepublic void writeToParcel(Parcel dest, int flags) {dest.writeString(name);}public void readFromParcel(Parcel desc) {name = desc.readString();}@Overridepublic String toString() {return "name=" + name;}
}

4、AIDL 目录下声明 Parcelable 类

在 aidl 目录下声明 Parcelable 类 : 在 aidl 目录下创建 Student.aidl 文件 , 然后声明如下内容 ;

package kim.hsl.aidl_demo;parcelable Student;

5、AIDL 中使用 Parcelable 类

在创建的 AIDL 接口中使用 Student 类 :

① 首先要导入 Student 类 , import kim.hsl.aidl_demo.Student;

② 参数的输入输出 , in 写入, out 输出, inout 写入和输出 ;

// IMyAidlInterface.aidl
package kim.hsl.aidl_demo;import kim.hsl.aidl_demo.Student;// Declare any non-default types here with import statementsinterface IMyAidlInterface {/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,double aDouble, String aString);/*** in 写入, out 输出, inout 写入和输出*/void addStudent(inout Student student);/*** 获取 Student 集合*/List<Student> getStudents();
}

二、编译工程生成 AIDL 文件对应的 Java 源文件

1、编译工程

点击 " 菜单栏 / Build / Make Project " 选项 , 即可编译当前的工程 , 进而生成 AIDL 接口对应的 Java 源文件 ;

编译后 , 在 " AIDL_Demo\app\build\generated\aidl_source_output_dir\debug\out\kim\hsl\aidl_demo " 目录 , 生成了 AIDL 文件对应的源码 :

2、生成的 AIDL 对应 Java 源文件

下面的源码是编译生成的 Java 源文件 :

/** This file is auto-generated.  DO NOT MODIFY.*/
package kim.hsl.aidl_demo;
// Declare any non-default types here with import statementspublic interface IMyAidlInterface extends android.os.IInterface
{/** Default implementation for IMyAidlInterface. */public static class Default implements kim.hsl.aidl_demo.IMyAidlInterface{/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/@Override public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, java.lang.String aString) throws android.os.RemoteException{}/*** in 写入, out 输出, inout 写入和输出*/@Override public void addStudent(kim.hsl.aidl_demo.Student student) throws android.os.RemoteException{}/*** 获取 Student 集合*/@Override public java.util.List<kim.hsl.aidl_demo.Student> getStudents() throws android.os.RemoteException{return null;}@Overridepublic android.os.IBinder asBinder() {return null;}}/** Local-side IPC implementation stub class. */public static abstract class Stub extends android.os.Binder implements kim.hsl.aidl_demo.IMyAidlInterface{private static final java.lang.String DESCRIPTOR = "kim.hsl.aidl_demo.IMyAidlInterface";/** Construct the stub at attach it to the interface. */public Stub(){this.attachInterface(this, DESCRIPTOR);}/*** Cast an IBinder object into an kim.hsl.aidl_demo.IMyAidlInterface interface,* generating a proxy if needed.*/public static kim.hsl.aidl_demo.IMyAidlInterface asInterface(android.os.IBinder obj){if ((obj==null)) {return null;}android.os.IInterface iin = obj.queryLocalInterface(DESCRIPTOR);if (((iin!=null)&&(iin instanceof kim.hsl.aidl_demo.IMyAidlInterface))) {return ((kim.hsl.aidl_demo.IMyAidlInterface)iin);}return new kim.hsl.aidl_demo.IMyAidlInterface.Stub.Proxy(obj);}@Override 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{java.lang.String descriptor = DESCRIPTOR;switch (code){case INTERFACE_TRANSACTION:{reply.writeString(descriptor);return true;}case TRANSACTION_basicTypes:{data.enforceInterface(descriptor);int _arg0;_arg0 = data.readInt();long _arg1;_arg1 = data.readLong();boolean _arg2;_arg2 = (0!=data.readInt());float _arg3;_arg3 = data.readFloat();double _arg4;_arg4 = data.readDouble();java.lang.String _arg5;_arg5 = data.readString();this.basicTypes(_arg0, _arg1, _arg2, _arg3, _arg4, _arg5);reply.writeNoException();return true;}case TRANSACTION_addStudent:{data.enforceInterface(descriptor);kim.hsl.aidl_demo.Student _arg0;if ((0!=data.readInt())) {_arg0 = kim.hsl.aidl_demo.Student.CREATOR.createFromParcel(data);}else {_arg0 = null;}this.addStudent(_arg0);reply.writeNoException();if ((_arg0!=null)) {reply.writeInt(1);_arg0.writeToParcel(reply, android.os.Parcelable.PARCELABLE_WRITE_RETURN_VALUE);}else {reply.writeInt(0);}return true;}case TRANSACTION_getStudents:{data.enforceInterface(descriptor);java.util.List<kim.hsl.aidl_demo.Student> _result = this.getStudents();reply.writeNoException();reply.writeTypedList(_result);return true;}default:{return super.onTransact(code, data, reply, flags);}}}private static class Proxy implements kim.hsl.aidl_demo.IMyAidlInterface{private android.os.IBinder mRemote;Proxy(android.os.IBinder remote){mRemote = remote;}@Override public android.os.IBinder asBinder(){return mRemote;}public java.lang.String getInterfaceDescriptor(){return DESCRIPTOR;}/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/@Override public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, java.lang.String aString) throws android.os.RemoteException{android.os.Parcel _data = android.os.Parcel.obtain();android.os.Parcel _reply = android.os.Parcel.obtain();try {_data.writeInterfaceToken(DESCRIPTOR);_data.writeInt(anInt);_data.writeLong(aLong);_data.writeInt(((aBoolean)?(1):(0)));_data.writeFloat(aFloat);_data.writeDouble(aDouble);_data.writeString(aString);boolean _status = mRemote.transact(Stub.TRANSACTION_basicTypes, _data, _reply, 0);if (!_status && getDefaultImpl() != null) {getDefaultImpl().basicTypes(anInt, aLong, aBoolean, aFloat, aDouble, aString);return;}_reply.readException();}finally {_reply.recycle();_data.recycle();}}/*** in 写入, out 输出, inout 写入和输出*/@Override public void addStudent(kim.hsl.aidl_demo.Student student) throws android.os.RemoteException{android.os.Parcel _data = android.os.Parcel.obtain();android.os.Parcel _reply = android.os.Parcel.obtain();try {_data.writeInterfaceToken(DESCRIPTOR);if ((student!=null)) {_data.writeInt(1);student.writeToParcel(_data, 0);}else {_data.writeInt(0);}boolean _status = mRemote.transact(Stub.TRANSACTION_addStudent, _data, _reply, 0);if (!_status && getDefaultImpl() != null) {getDefaultImpl().addStudent(student);return;}_reply.readException();if ((0!=_reply.readInt())) {student.readFromParcel(_reply);}}finally {_reply.recycle();_data.recycle();}}/*** 获取 Student 集合*/@Override public java.util.List<kim.hsl.aidl_demo.Student> getStudents() throws android.os.RemoteException{android.os.Parcel _data = android.os.Parcel.obtain();android.os.Parcel _reply = android.os.Parcel.obtain();java.util.List<kim.hsl.aidl_demo.Student> _result;try {_data.writeInterfaceToken(DESCRIPTOR);boolean _status = mRemote.transact(Stub.TRANSACTION_getStudents, _data, _reply, 0);if (!_status && getDefaultImpl() != null) {return getDefaultImpl().getStudents();}_reply.readException();_result = _reply.createTypedArrayList(kim.hsl.aidl_demo.Student.CREATOR);}finally {_reply.recycle();_data.recycle();}return _result;}public static kim.hsl.aidl_demo.IMyAidlInterface sDefaultImpl;}static final int TRANSACTION_basicTypes = (android.os.IBinder.FIRST_CALL_TRANSACTION + 0);static final int TRANSACTION_addStudent = (android.os.IBinder.FIRST_CALL_TRANSACTION + 1);static final int TRANSACTION_getStudents = (android.os.IBinder.FIRST_CALL_TRANSACTION + 2);public static boolean setDefaultImpl(kim.hsl.aidl_demo.IMyAidlInterface impl) {// Only one user of this interface can use this function// at a time. This is a heuristic to detect if two different// users in the same process use this function.if (Stub.Proxy.sDefaultImpl != null) {throw new IllegalStateException("setDefaultImpl() called twice");}if (impl != null) {Stub.Proxy.sDefaultImpl = impl;return true;}return false;}public static kim.hsl.aidl_demo.IMyAidlInterface getDefaultImpl() {return Stub.Proxy.sDefaultImpl;}}/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, java.lang.String aString) throws android.os.RemoteException;/*** in 写入, out 输出, inout 写入和输出*/public void addStudent(kim.hsl.aidl_demo.Student student) throws android.os.RemoteException;/*** 获取 Student 集合*/public java.util.List<kim.hsl.aidl_demo.Student> getStudents() throws android.os.RemoteException;
}

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