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[操作系统]Android中利用AIDL机制调用远程服务


 

服务端://CalculateInterface.aidlpackage com.itheima.aidl.calculate;interface CalculateInterface {double doCalculate(double a, double b);}//CalculateService.javapackage com.itheima.myaidl.server;import com.itheima.aidl.calculate.CalculateInterface;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.os.RemoteException;import android.util.Log;public class CalculateService extends Service{private final CalculateInterface.Stub mBinder = new CalculateInterface.Stub() {@Overridepublic double doCalculate(double a, double b) throws RemoteException {return a+b;}};@Overridepublic IBinder onBind(Intent intent) {Log.i("test","onBind...");return mBinder;}@Overridepublic boolean onUnbind(Intent intent) {Log.i("test","onUnbind...");return super.onUnbind(intent);}@Overridepublic void onCreate() {super.onCreate();Log.i("test","onCreate...");}@Overridepublic void onDestroy() {super.onDestroy();Log.i("test","onDestroy...");}}//服务端manifast文件<manifest   android:versionCode="1"  android:versionName="1.0" >  <uses-sdk    android:minSdkVersion="14"    android:targetSdkVersion="19" />  <application    android:allowBackup="true"    android:icon="@drawable/ic_launcher"    android:label="@string/app_name"    android:theme="@style/AppTheme" >    <activity       android:name="com.itheima.myaidl.server.MainActivity"      android:configChanges="locale|layoutDirection"      android:theme="@android:style/Theme.Light.NoTitleBar"      android:screenOrientation="portrait">       <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>    </activity>    <service android:name="com.itheima.myaidl.server.CalculateService">       <intent-filter>        <action android:name="com.itheima.myaidl.server.CalculateService" />      </intent-filter>    </service>  </application></manifest>//客户端//MainActivity.javapackage com.itheima.myaidl.client;import android.app.Activity;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.os.RemoteException;import android.util.Log;import com.itheima.aidl.calculate.CalculateInterface;public class MainActivity extends Activity {  private CalculateInterface mService;    private ServiceConnection mServiceConnection = new ServiceConnection() {    @Override    public void onServiceDisconnected(ComponentName name) {      Log.i("test","service disconnected...");      mService = null;    }        @Override    public void onServiceConnected(ComponentName name, IBinder service) {      Log.i("test","service connected...");      mService = CalculateInterface.Stub.asInterface(service); //获取接口实例    }  };    @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);        //绑定远程服务    Bundle bundle = new Bundle();    Intent intent = new Intent();    intent.putExtras(bundle);    intent.setAction("com.itheima.myaidl.server.CalculateService");    bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);  }    //TODO activity加载完毕时回调此方法  @Override  public void onWindowFocusChanged(boolean hasFocus) {    if(hasFocus){      try{        double result = mService.doCalculate(1, 2);        Log.i("test","result===>"+result);      }catch(RemoteException e){        e.printStackTrace();      }    }    super.onWindowFocusChanged(hasFocus);  }    @Override  protected void onDestroy() {    unbindService(mServiceConnection); //解绑远程服务    super.onDestroy();  }}
 
 

运行结果截图: