Android开发 AIDL使用自定义对象作参数或返回值

默认，AIDL支持对象作参数，但需要该对象实现Parcelable接口，且aidl文件应该是该类在同一包下，需要单独给该类定义一个aidl文件. 定义模型类: EnglishItem.java:

package com.pocketdigi.english.aidl;

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

import com.j256.ormlite.field.DatabaseField;
import com.j256.ormlite.table.DatabaseTable;
import com.pocketdigi.english.utils.Constants;
import com.pocketdigi.english.utils.Des;

@DatabaseTable(tableName = "listenlist")
public class EnglishItem implements Parcelable {
    /**
     * 
     */
    private static final long serialVersionUID = -1756522544697525757L;
    @DatabaseField(id = true)
    private int id;
    @DatabaseField
    private String title;
    @DatabaseField
    private String category;
    @DatabaseField
    private String mp3url;
    @DatabaseField
    private String lrcurl;
    @DatabaseField
    private String txturl;

    public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
        public EnglishItem createFromParcel(Parcel in) {
            return new EnglishItem(in);
        }

        public EnglishItem[] newArray(int size) {
            return new EnglishItem[size];
        }
    };
    
    private EnglishItem(Parcel in)
    {
        readFromParcel(in);
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getCategory() {
        return category;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public String getMp3url() {
        return Des.decodeValue(Constants.DES_KEY, mp3url);
    }

    public void setMp3url(String mp3url) {
        this.mp3url = mp3url;
    }

    public String getLrcurl() {
        return Des.decodeValue(Constants.DES_KEY, lrcurl);
    }

    public void setLrcurl(String lrcurl) {
        this.lrcurl = lrcurl;
    }

    public String getTxturl() {
        return Des.decodeValue(Constants.DES_KEY, txturl);
    }

    public void setTxturl(String txturl) {
        this.txturl = txturl;
    }

    @Override
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public void writeToParcel(Parcel out, int flag) {
        // TODO Auto-generated method stub
        out.writeInt(id);
        out.writeString(title);
        out.writeString(category);
        out.writeString(mp3url);
        out.writeString(lrcurl);
        out.writeString(txturl);
    }
    /**
     * 读
     * @param in
     */
    public void readFromParcel(Parcel in)
    {
        id=in.readInt();
        title=in.readString();
        category=in.readString();
        category=in.readString();
        lrcurl=in.readString();
        txturl=in.readString();
    }
}

Parcelable.Creator不可少。 同包下定义一个EnglishItem.aidl：

package com.pocketdigi.english.aidl;
parcelable EnglishItem;

最后是调用接口aidl： PlayerAidl.aidl:

package com.pocketdigi.english.aidl;

import com.pocketdigi.english.aidl.EnglishItem;

interface PlayerAidl {
    /**
    *传入列表
    **/
    void putList(inout List item);
    /**
    *播放指定音频
    **/
    void play(int index);
    void pause();
    /**
    *暂停后恢复播放
    **/
    void resume();
    /**
    *删除指定项
    **/
    void delete(int position);
    /**
    *停止服务
    **/
    void stopService();
}