Android通过AIDL远程调用service

来源：互联网发布：c 知乎编辑：程序博客网时间：2024/06/10 02:17

AIDL的作用

AIDL (Android Interface Definition Language) 是一种IDL 语言，用于生成可以在Android设备上两个进程之间进行进程间通信(interprocess communication, IPC)的代码。如果在一个进程中（例如Activity）要调用另一个进程中（例如Service）对象的操作，就可以使用AIDL生成可序列化的参数。
AIDL IPC机制是面向接口的，像COM或Corba一样，但是更加轻量级。它是使用代理类在客户端和实现端传递数据。

实现的简单列子
下面小编写了一个简单登录

1.MainActivity.xml

    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="MyQQ登录"        android:textSize="30sp"        android:gravity="center"        />    <EditText        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="请输入MyQQ号："        android:inputType="number"        android:id="@+id/et_main_num"        />    <EditText        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:hint="请输入MyQQ密码："        android:inputType="numberPassword"        android:id="@+id/et_main_pass"        />     <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"         android:text="登录"         android:onClick="login"        />   <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="结果："        android:id="@+id/tv_main_result"        android:textSize="25sp"        />

2.QQUser.java

public class QQUser implements Parcelable{    private String num;    private String pass;    private String netName;    private String address;    private String sex;    private String age;    public QQUser() {    }    public QQUser(String num, String pass, String netName, String address, String sex, String age) {        this.num = num;        this.pass = pass;        this.netName = netName;        this.address = address;        this.sex = sex;        this.age = age;    }    protected QQUser(Parcel in) {        num = in.readString();        pass = in.readString();        netName = in.readString();        address = in.readString();        sex = in.readString();        age = in.readString();    }    public static final Creator<QQUser> CREATOR = new Creator<QQUser>() {        @Override        public QQUser createFromParcel(Parcel in) {            return new QQUser(in);        }        @Override        public QQUser[] newArray(int size) {            return new QQUser[size];        }    };    public String getNum() {        return num;    }    public void setNum(String num) {        this.num = num;    }    public String getPass() {        return pass;    }    public void setPass(String pass) {        this.pass = pass;    }    public String getNetName() {        return netName;    }    public void setNetName(String netName) {        this.netName = netName;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }    public String getAge() {        return age;    }    public void setAge(String age) {        this.age = age;    }    @Override    public int describeContents() {        return 0;    }    @Override    public void writeToParcel(Parcel parcel, int i) {        parcel.writeString(num);        parcel.writeString(pass);        parcel.writeString(netName);        parcel.writeString(address);        parcel.writeString(sex);        parcel.writeString(age);    }}

3.MyQQLoginService.java

public class MyQQLoginService extends Service {    class MyIBinder extends QQLoginOut.Stub{        @Override        public boolean login(String num, String pass) throws RemoteException {            if("admin".equals(num)&&"123456".equals(pass)){                return true;            }else{                return false;            }        }        @Override        public QQUser loginGetUser(Map map) throws RemoteException {            String num=map.get("num").toString();            String pass=map.get("pass").toString();            if("5201314".equals(num)&&"123456".equals(pass)){                return new QQUser(num,pass,"vampire","湖南","女","18");            }else{                return null;            }        }    }    @Nullable    @Override    public IBinder onBind(Intent intent) {        Log.i("test","onBind");        return new MyIBinder();    }}

4.AndroidManifest.xml

        <service android:name=".MyQQLoginService"            android:exported="true"            android:enabled="true"            >        </service>

5.QQUserOut.aidl

package com.zking.android25_myqq;//定义QQUserparcelable QQUser;

6.QQLoginOut.aidl

package com.zking.android25_myqq;import  com.zking.myqq.QQUserOut;interface QQLoginOut {     boolean login(String num,String pass);     QQUser loginGetUser(in Map map);}

7.MainActivity.java

public class MainActivity extends AppCompatActivity {    private EditText et_main_num;    private EditText et_main_pass;    private TextView tv_main_result;    private Intent intent;    private QQLoginOut qqLoginOut;    //初始化ServiceConnection    ServiceConnection connection=new ServiceConnection() {        @Override        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {            Log.i("test","连接成功");            qqLoginOut = QQLoginOut.Stub.asInterface(iBinder);        }        @Override        public void onServiceDisconnected(ComponentName componentName) {            Log.i("test","连接失败");        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initviews();        intent = new Intent(this,MyQQLoginService.class);    }    @Override    protected void onResume() {        super.onResume();        //绑定服务        bindService(intent,connection, Service.BIND_AUTO_CREATE);    }    @Override    protected void onDestroy() {        super.onDestroy();        //和服务解除绑定        unbindService(connection);    }    private void initviews() {        et_main_num = (EditText) findViewById(R.id.et_main_num);        et_main_pass = (EditText) findViewById(R.id.et_main_pass);        tv_main_result = (TextView) findViewById(R.id.tv_main_result);    }    public void login(View view){        String num=et_main_num.getText().toString();        String pass=et_main_pass.getText().toString();        //连接后台        boolean b= false;        try {            Map map=new HashMap();            map.put("num",num);            map.put("pass",pass);            QQUser qqUser= qqLoginOut.loginGetUser(map);            if(qqUser!=null){                tv_main_result.setText("雷好："+qqUser.getNetName()+" 年芳："+qqUser.getAge()+" 性别："+qqUser.getSex());            }else{             tv_main_result.setText("用户名或密码错误");            }        } catch (RemoteException e) {            e.printStackTrace();        }    }}

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