该实例所传输的数据类型是自定义类型。
Android 要求调用远程Service的参数和返回值都需要实现Parcelable接口。
实现Parcelable接口相当于Android提供的一种自定义序列化机制。
实现Parcelable接口不仅要求实现该接口里定义的方法，而且要求在实现类中定义一个名为CREATOR
类型为Parcelable.Creator的静态Filed。除此之外，还要求使用AIDL代码来定义这些自定义类型。
服务端：
自定义两个类型：Person与Pet，其中Person对象作为调用远程Service的参数，而Pet将作为返回值。
Person 和 Pet类都必须实现 Parcelable接口，并在实现类中定义一个名为CREATOR的静态Filed。
要定义Person类，先要AIDL来定义Person类：
parcelable Person;
接下来定义Person实现Parcelable的类
public class Person implements Parcelable {
private Integer id;
private String name;
private String pass;
public Person() {
super();
// TODO Auto-generated constructor stub
}
public Person(Integer idInteger, String name, String pass) {
super();
this.id = idInteger;
this.name = name;
this.pass = pass;
}
public Integer getIdInteger() {
return id;
}
public void setIdInteger(Integer idInteger) {
this.id = idInteger;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
@Override
public int hashCode() {
// TODO Auto-generated method stub
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((pass == null) ? 0 : pass.hashCode());
return result;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null) {
return false;
}
if (getClass() != o.getClass()) {
return false;
}
Person other = (Person) o;
if (name == null) {
if (other.name != null) {
return false;
}
} else if (!name.equals(other.name)) {
return false;
}
if (pass == null) {
if (other.pass != null) {
return false;
}
} else if (!pass.equals(other.pass)) {
return false;
}
return true;
}
// 实现Parcelable必须要实现的方法
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
// 把该对象所包含的数据写到Parcel
dest.writeInt(id);
dest.writeString(name);
dest.writeString(pass);
}
public static final Parcelable.Creator<Person> CREATOR = new Parcelable.Creator<Person>() {
@Override
public Person createFromParcel(Parcel source) {
// 从Parcel中读取数据，返回Person对象
return new Person(source.readInt(), source.readString(),
source.readString());
}
@Override
public Person[] newArray(int size) {
// TODO Auto-generated method stub
return new Person[size];
}
};
}
然后是Pet类，也是先定义AIDL中的Pet：
parcelable Pet;
然后是定义Pet类实现Parcelable：
public class Pet implements Parcelable {
private String name;
private double weight;
public Pet(String name, double weight) {
super();
this.name = name;
this.weight = weight;
}
public Pet() {
super();
// TODO Auto-generated constructor stub
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getWeight() {
return weight;
}
public void setWeight(double weight) {
this.weight = weight;
}
@Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
@Override
public String toString() {
return "Pet [name=" + name + ", weight=" + weight + "]";
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeDouble(weight);
}
// 添加一个静态成员，名为CREATOR，该对象实现了Parcelable.Creator接口
public static final Parcelable.Creator<Pet> CREATOR = new Parcelable.Creator<Pet>() {
@Override
public Pet createFromParcel(Parcel source) {
// 从Parcel中读取数据，返回Pet对象
return new Pet(source.readString(), source.readDouble());
}
@Override
public Pet[] newArray(int size) {
return new Pet[size];
}
};
}
有了Person和Pet自定义的类，接下来就要定义用于通信的接口了：IPet
还是先是AIDL中定义：
package com.example.complexaidlservice;
import com.example.complexaidlservice.Pet;
import com.example.complexaidlservice.Person;
//定义一个Person对象作为传入对象
interface IPet{
List<Pet> getPets (in Person owner );
}
接下来就是开发Service类了：
public class ComplexService extends Service {
private PetBinder petBinder;
private static Map<Person, List<Pet>> pets = new HashMap<Person, List<Pet>>();
static {
ArrayList<Pet> list1 = new ArrayList<Pet>();
list1.add(new Pet("旺财", 4.3));
list1.add(new Pet("来福", 5.4));
pets.put(new Person(1, "sun", "sun"), list1);
ArrayList<Pet> list2 = new ArrayList<Pet>();
list2.add(new Pet("Kitty", 2.3));
list2.add(new Pet("garfiled", 3.1));
pets.put(new Person(2, "bai", "bai"), list2);
}
@Override
public void onCreate() {
super.onCreate();
petBinder = new PetBinder();
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return petBinder;
}
// 继承Stub，也就是实现了IPet接口，并实现了IBinder接口
public class PetBinder extends Stub {
@Override
public List<Pet> getPets(Person owner) throws RemoteException {
// TODO Auto-generated method stub
return pets.get(owner);
}
}
@Override
public void onDestroy() {
}
}
接下来该写客户端的代码了：
还记得在上一篇中写到的，需要把服务端的AIDL接口复制过来，传递复杂数据的时候，不仅仅只将IPet复制过来
同时也要将 Person.java,Person.aidl Pet.aidl,Pet.java 一起复制到客户端。
还是按照之前绑定远程Service的方式即可，并在ServiceConnection实现类的onServiceConnected方法中
获取远程Service的onBind方法返回的代理对象即可。
public class ComplexClient extends Activity {
private IPet petService;
private Button get;
EditText personView;
ListView showView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
personView = (EditText) findViewById(R.id.person);
showView = (ListView) findViewById(R.id.show);
get = (Button) findViewById(R.id.get);
Intent intent = new Intent();
intent.setAction("com.example.complexaidlservice.COMPLEXSERVICE");
// 绑定远程Service
bindService(intent, conn, Service.BIND_AUTO_CREATE);
get.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
String personName = personView.getText().toString();
// 调用远程Service的方法
List<Pet> pets = petService.getPets(new Person(1,
personName, personName));
// 将程序返回的List包装成ArrayAdapterpter
ArrayAdapter<Pet> adapter = new ArrayAdapter<>(
ComplexClient.this,
android.R.layout.simple_list_item_1, pets);
showView.setAdapter(adapter);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
this.unbindService(conn);
}
private ServiceConnection conn = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
// 获取远程Service的onBind方法返回的对象的代理
petService = IPet.Stub.asInterface(service);
}
@Override
public void onServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub
petService = null;
}
};
}
时间： 2024-08-04 17:06:09