AIDL簡單例子

摘要： AIDL （Android Interface Definition Language）， Android介面定義語言，Android提供的IPC （Inter Process Communication，程序間通訊）的一種獨特實現。 實現AIDL呼叫示例： 1.AIDL公...

AIDL （Android Interface Definition Language）， Android介面定義語言，Android提供的IPC （Inter Process Communication，程序間通訊）的一種獨特實現。

實現AIDL呼叫示例：

1.AIDL公用介面端：

在main下建立aidl包，在專案路徑下建立aidl介面，以aidl結尾

package com.example.apple.aidluse;
import com.example.apple.aidluse.UserBean;

interface IGetUser {
UserBean getUserBean();
}

2.建立UserBean實體類，需要實現Parcelable。

import android.os.Parcel;
import android.os.Parcelable;

public class UserBean implements Parcelable{
private String name;
private int age;

public UserBean(String name, int age) {
this.name = name;
this.age = age;
}


protected UserBean(Parcel in) {
name = in.readString();
age = in.readInt();
}

public static final Creator<UserBean> CREATOR = new Creator<UserBean>() {
@Override
public UserBean createFromParcel(Parcel in) {
return new UserBean(in);
}

@Override
public UserBean[] newArray(int size) {
return new UserBean[size];
}
};

@Override
public int describeContents() {
return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeInt(age);
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}
}

3.建立UserBean.aidl

package com.example.apple.aidluse;
parcelable UserBean;

4.建立Service類

public class UserService extends Service{

@Nullable
@Override
public IBinder onBind(Intent intent) {
return binder;
}

//使用IGetUser之前，需要編譯或執行一下，不然找不到介面
private Binder binder = new IGetUser.Stub(){

@Override
public UserBean getUserBean(){
return new UserBean("小王",23);
}
};
}

5.註冊UserService

<service android:name=".UserService"
android:exported="true"
android:enabled="true" >
<intent-filter>
<action android:name="com.example.apple.aidluse.UserService" />
</intent-filter>
</service>

客戶端

1.建立ServiceConnection物件，繫結服務連線上Service後，使用IBinder物件，IGetUser.Stub.asInterface(service)獲取介面，呼叫介面方法遠端呼叫服務端的方法進行處理，獲取想要的結果。

private ServiceConnection serviceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
IGetUser iGetUser = IGetUser.Stub.asInterface(service);
try {
UserBean userBean = iGetUser.getUserBean();
Toast.makeText(getApplication(),userBean.getName() + "------" + userBean.getAge(),Toast.LENGTH_SHORT).show();

} catch (RemoteException e) {
e.printStackTrace();
}
}

@Override
public void onServiceDisconnected(ComponentName name) {

}
};

2.啟動服務端：

public void startService(View view) {
Intent intent = new Intent(this, UserService.class);
startService(intent);
}

3.客戶端繫結服務端：

public void bindService(View view) {
Intent intent1 = new Intent();
intent1.setAction("com.example.apple.aidluse.UserService");
Intent explicitIntent = createExplicitFromImplicitIntent(this,intent1);
bindService(explicitIntent, serviceConnection, Context.BIND_AUTO_CREATE);
}

public static Intent createExplicitFromImplicitIntent(Context context, Intent implicitIntent) {
// Retrieve all services that can match the given intent
PackageManager pm = context.getPackageManager();
List<ResolveInfo> resolveInfo = pm.queryIntentServices(implicitIntent, 0);

// Make sure only one match was found
if (resolveInfo == null || resolveInfo.size() != 1) {
return null;
}

// Get component info and create ComponentName
ResolveInfo serviceInfo = resolveInfo.get(0);
String packageName = serviceInfo.serviceInfo.packageName;
String className = serviceInfo.serviceInfo.name;
ComponentName component = new ComponentName(packageName, className);

// Create a new intent. Use the old one for extras and such reuse
Intent explicitIntent = new Intent(implicitIntent);

// Set the component to be explicit
explicitIntent.setComponent(component);

return explicitIntent;
}

這裡是github程式碼直通車