Android Studio Service 介绍

最近在学习 Android Studio 和eclipse还是有很多不同的地方, 正好用到 AIDL, 发现有些不同的地方,第一次在CSDN写这个,写的不好,希望大家多见谅,有错的地方欢迎大家给我留言,我会虚心的接受,并予以改正,下边进入正题.

转载请注明出处: http://blog.csdn.net/zhaoshiyu1/article/details/50831798

感谢郭老师的文章,帮助我很多http://blog.csdn.net/guolin_blog/article/details/11952435

新建一个module,命名ServiceTest

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private Button startService;

    private Button stopService;
    private Button bindService;

    private Button unbindService;

    private MyService.MyBinder myBinder;

    private boolean isBinder = false;


    private MyAIDLService myAIDLService;
    //ServiceConnection的匿名类
    private ServiceConnection connection = new ServiceConnection() {
        // 这两个方法分别会在Activity与Service建立关联和解除关联的时候调用

        @Override
        public void onServiceDisconnected(ComponentName name) {
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
//            myBinder = (MyService.MyBinder) service;
//            myBinder.startDownload();
            myAIDLService = MyAIDLService.Stub.asInterface(service);
            try {
                int result = myAIDLService.plus(3, 5);
                String upperStr = myAIDLService.toUpperCase("hello world");
                Log.d("TAG", "result is " + result);
                Log.d("TAG", "upperStr is " + upperStr);
            } catch (RemoteException e) {
                e.printStackTrace();
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startService = (Button) findViewById(R.id.start_service);
        stopService = (Button) findViewById(R.id.stop_service);
        bindService = (Button) findViewById(R.id.bind_service);
        unbindService = (Button) findViewById(R.id.unbind_service);
        startService.setOnClickListener(this);
        stopService.setOnClickListener(this);
        bindService.setOnClickListener(this);
        unbindService.setOnClickListener(this);

        Log.d("MyService", "MainActivity thread id is " + Thread.currentThread().getId());
        Log.d("TAG", "process id is " + Process.myPid());
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.start_service:
                Intent startIntent = new Intent(this, MyService.class);
                startService(startIntent);
                break;
            case R.id.stop_service:
                Log.d("MyService", "click Stop Service button");
                Intent stopIntent = new Intent(this, MyService.class);
                stopService(stopIntent);
                break;
            case R.id.bind_service:
                if (isBinder == false) {

                    Intent bindIntent = new Intent(this, MyService.class);
                    bindService(bindIntent, connection, BIND_AUTO_CREATE);
                    isBinder = true;
                }
                break;
            case R.id.unbind_service:
                if (isBinder == true) {

                    Log.d("MyService", "click Unbind Service button");
                    unbindService(connection);
                    isBinder = false;
                }
                break;
            default:
                break;
        }
    }
}

新建一个 MyService 类

public class MyService extends Service {
    public static final String TAG = "MyService";
    private MyBinder mBinder = new MyBinder();
//    private NotificationManager notificationManager = null;

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        //throw new UnsupportedOperationException("Not yet implemented");
       // return mBinder;
        return mBinder2;
    }

    MyAIDLService.Stub mBinder2 = new MyAIDLService.Stub() {

        @Override
        public String toUpperCase(String str) throws RemoteException {
            if (str != null) {
                return str.toUpperCase();
            }
            return null;
        }



        @Override
        public int plus(int a, int b) throws RemoteException {
            return a + b;
        }
    };

    @Override
    public void onCreate() {
        super.onCreate();

        //service线程休眠会导致ANR,
       /*
       try {
            Thread.sleep(60000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        */
        Log.d("MyService", "MyService thread id is " + Thread.currentThread().getId());
        Log.d(TAG, "onCreaMyte() executed");
        Log.d("TAG", "process id is " + Process.myPid());

       
        Notification.Builder builder = new Notification.Builder(this);
        Intent notificationIntent = new Intent(this, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
                notificationIntent, PendingIntent.FLAG_ONE_SHOT);
       		 builder.setContentTitle("这是通知的标题")
                .setContentIntent(pendingIntent)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentText("这是通知的内容");
        //将Notification变为前台service
        startForeground(1, builder.build());
     
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG, "onStartCommand() executed");
        new Thread(new Runnable() {
            @Override
            public void run() {
                // 开始执行后台任务
            }
        }).start();
        return super.onStartCommand(intent, flags, startId);
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "onDestroy() executed");
    }
    class MyBinder extends Binder {

        public void startDownload() {
            Log.d("TAG", "startDownload() executed");
            new Thread(new Runnable() {
                @Override
                public void run() {
                    // 执行具体的下载任务
                }
            }).start();
        }
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.yu.servicetest">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name=".MyService"
            android:enabled="true"
            android:exported="true"
            android:process=":remote">
            <intent-filter>
                <action android:name="com.yu.servicetest.MyAIDLService"/>
            </intent-filter>
        </service>
    </application>

</manifest>

activity_main

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/start_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Start Service" />

    <Button
        android:id="@+id/stop_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Stop Service" />
    <Button
        android:id="@+id/bind_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Bind Service" />

    <Button
        android:id="@+id/unbind_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Unbind Service"
        />
</LinearLayout>

下面是重点,就是和eclipse不太一样的地方.....

新建一个AIDL

Android Studio Service 介绍

点击finish完成.

Android Studio Service 介绍

编辑 MyAIDLService.aidl

// MyAIDLService.aidl
package com.yu.servicetest;

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

interface MyAIDLService {
    /**
     * Demonstrates some basic types that you can use as parameters
     * and return values in AIDL.
     */
     int plus(int a,int b);
     String toUpperCase(String str);
//    void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
//            double aDouble, String aString);
}

之后make project 一下,

Android Studio Service 介绍

看一下,这个路径下是否自动生成了接口....

Android Studio Service 介绍

在新建一个Module 用于访问servicetest,命名为ClientTest

MainActivity

public class MainActivity extends AppCompatActivity {
    private MyAIDLService myAIDLService;

    private ServiceConnection connection = new ServiceConnection() {

        @Override
        public void onServiceDisconnected(ComponentName name) {
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            myAIDLService = MyAIDLService.Stub.asInterface(service);
            try {
                int result = myAIDLService.plus(50, 50);
                String upperStr = myAIDLService.toUpperCase("comes from ClientTest");
                Log.d("TAG", "result is " + result);
                Log.d("TAG", "upperStr is " + upperStr);
            } catch (RemoteException e) {
                e.printStackTrace();
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button bindService = (Button) findViewById(R.id.bind_service);
        bindService.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent("com.yu.servicetest.MyAIDLService");
                bindService(intent, connection, BIND_AUTO_CREATE);
            }
        });
    }

}

activity_main

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/bind_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Bind Service" />

</LinearLayout>

和eclipse不同的地方来了.....

Android Studio Service 介绍

将上个Module写好的aidl文件夹,直接复制到ClientTest Module下的main文件夹下,和java同级

make project 一下

在gen目录下,会生成与serviceTest同样的接口类

最后就是运行下ServiceTest 绑定服务 ,然后运行下 ClientTest.点击按钮

要是有什么写的不对的地方,请给我留言,我会及时改正的,谢谢,

再次感谢郭老师的文章,写的非常好

Android Studio Service 介绍

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