Android之AIDL

两个应用分别是anotherapp和app，本次从anotherapp启动app中的AppService并进行通信。

app中AppService.java:

package com.minardwu.learnaidl;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;

public class AppService extends Service {

    private String data = "默认数据";
    private boolean isRunning;

    public AppService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        return new IAppServiceInterface.Stub() {
            @Override
            public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

            }

            @Override
            public void setData(String data) throws RemoteException {
                AppService.this.data = data;
            }
        };
    }

    @Override
    public void onCreate() {
        super.onCreate();
        System.out.println("onCreate");
        isRunning = true;
        new Thread(){
            @Override
            public void run() {
                super.run();
                while (isRunning){
                    System.out.println(data);
                    try {
                        sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }.start();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        isRunning = false;
        System.out.println("onDestory");
    }
}
app中IAppServiceInterface.aidl(在anotherapp中也要复制一份):

// IAppServiceInterface.aidl
package com.minardwu.learnaidl;

// Declare any non-default types here with import statements

interface IAppServiceInterface {
    /**
     * 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);
    void setData(String data);
}

anotherapp中的ManActivity.java:

package com.minardwu.anotherapp;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

import com.minardwu.learnaidl.IAppServiceInterface;

public class MainActivity extends AppCompatActivity implements View.OnClickListener, ServiceConnection {

    private Intent intent;
    private EditText et;
    private IAppServiceInterface appServiceInterface = null;//若绑定外部服务成功则在onServiceConected函数中被赋值

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        intent = new Intent();
        intent.setComponent(new ComponentName("com.minardwu.learnaidl","com.minardwu.learnaidl.AppService"));
        et = (EditText) findViewById(R.id.et);
        et.setText("另一个应用的数据");
        findViewById(R.id.start).setOnClickListener(this);
        findViewById(R.id.stop).setOnClickListener(this);
        findViewById(R.id.bind).setOnClickListener(this);
        findViewById(R.id.unbind).setOnClickListener(this);
        findViewById(R.id.change).setOnClickListener(this);
    }

    //如果只是单纯的startService和stopService不需要AIDL
    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.start:
                startService(intent);
                break;
            case R.id.stop:
                stopService(intent);
                break;
            case R.id.bind:
                bindService(intent,this, Context.BIND_AUTO_CREATE);
                break;
            case R.id.unbind:
                unbindService(this);
                appServiceInterface = null;
                break;
            case R.id.change:
                if(appServiceInterface!=null)
                    try {
                        appServiceInterface.setData(et.getText().toString());
                    } catch (RemoteException e) {
                        e.printStackTrace();
                    }
                break;
        }
    }


    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
        System.out.println("onServiceConnected");
        appServiceInterface = IAppServiceInterface.Stub.asInterface(service);
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {

    }
}