Android 使用AIDL跨进程通信(二)--传递自定义对象

使用AIDL传递自定义Bean结构,必须实现parcelable接口

Server中进行定义Bean结构

// Parcelable与Serializable序列化对比// 1.在使用内存的时候，Parcelable比Serializable性能高，所以推荐使用Parcelable。//// 2.Serializable在序列化的时候会产生大量的临时变量，从而引起频繁的GC。//// 3.Parcelable不能使用在要将数据存储在磁盘上的情况，// 因为Parcelable不能很好的保证数据的持续性在外界有变化的情况下。// 尽管Serializable效率低点，但此时还是建议使用Serializable 。public class User implements Parcelable {    private String userName;    private String passwd;    public User() {    }    public User(String userName, String passwd) {        this.userName = userName;        this.passwd = passwd;    }    protected User(Parcel in) {        userName = in.readString();        passwd = in.readString();    }    //为了能够实现模板参数的传入，这里定义Creator嵌入接口,内含两个接口函数分别返回单个和多个继承类实例    public static final Creator<User> CREATOR = new Creator<User>() {        @Override        public User createFromParcel(Parcel in) {            return new User(in);        }        @Override        public User[] newArray(int size) {            return new User[size];        }    };    // 内容描述方法,基本不用    @Override    public int describeContents() {        return 0;    }    // 写入接口函数,打包    @Override    public void writeToParcel(Parcel dest, int flags) {        dest.writeString(userName);        dest.writeString(passwd);    }    public String getUserName() {        return userName;    }    public void setUserName(String userName) {        this.userName = userName;    }    public String getPasswd() {        return passwd;    }    public void setPasswd(String passwd) {        this.passwd = passwd;    }    @Override    public String toString() {        return "User{" +                "userName='" + userName + '\'' +                ", passwd='" + passwd + '\'' +                '}';    }}
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定义AIDL接口文件

// IGetUser.aidlpackage cn.edu.hebust.aidldemo2;// Declare any non-default types here with import statements// 手动添加import cn.edu.hebust.aidldemo2.User;interface IGetUser {    /**     * 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);    // 自定义的AIDL接口    List<User> getUserInfo(String name);}
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定义AIDLBean文件

这里必须定义AIDL Bean文件,不然会出现import error 的编译错误,将AIDL声明Bean结构即可

// IUser.aidlpackage cn.edu.hebust.aidldemo2;// Declare any non-default types here with import statementsimport cn.edu.hebust.aidldemo2.User;parcelable User;
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Ctrl+B 编译这个项目

这时会生成相应的Java文件, 然后使用这个java文件进行通信 
提供一个Service供通信

public class MyService extends Service {    // 实际的通信对象    private IBinder mStub = new IGetUser.Stub() {        @Override        public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {        }        // 与其他Client通信的接口        @Override        public List<User> getUserInfo(String name) throws RemoteException {            List<User> list = new LinkedList<>();            for (int i = 0; i < 10; i++) {                list.add(new User(name + i, name + (i >> 2)));            }            return list;        }    };    @Override    public int onStartCommand(Intent intent, int flags, int startId) {        return START_STICKY;    }    @Nullable    @Override    public IBinder onBind(Intent intent) {        return mStub;    }}
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client的配置

拷贝相同的aidl文件和bean文件  
注意Bean文件的包名应该一样 

// 另一个进程中的通信代码,通过Servicepublic class MainActivity extends AppCompatActivity {    private static final String TAG = "LOGGER";    private TextView mTvText;    private ServiceConnection mConn = new ServiceConnection() {        @Override        public void onServiceConnected(ComponentName name, IBinder service) {            IGetUser mStub = IGetUser.Stub.asInterface(service);            try {                List<User> list = mStub.getUserInfo("terry");                for (User aUser : list) {                    mTvText.append(aUser.toString() + "\n");                }            } catch (RemoteException e) {                e.printStackTrace();            }        }        @Override        public void onServiceDisconnected(ComponentName name) {            Log.d(TAG, "onServiceDisconnected: ");            Toast.makeText(MainActivity.this, "onServiceDisconnected", Toast.LENGTH_SHORT).show();        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mTvText = (TextView) findViewById(R.id.id_tv_text);        Intent intent = new Intent();        ComponentName componentName = new ComponentName("cn.edu.hebust.aidldemo2"                , "cn.edu.hebust.aidldemo2.MyService");        intent.setComponent(componentName);        bindService(intent, mConn, BIND_AUTO_CREATE);    }    @Override    protected void onDestroy() {        unbindService(mConn);        super.onDestroy();    }}
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