Question

您好我是Android新手，这也是我第一次使用可在后台运行的服务。我的意思是我想构建一个语音命令应用程序，我希望它能够监听用户的命令，即使它已关闭。我想在按下＆＃39; Back＆＃39;时开始我的服务。任何用户按钮。我将非常感谢你的大力帮助。

Answer 1

试试这个：

import android.app.Service;

import android.content.Intent; import android.os.IBinder;

公共类Startappservice扩展了服务{

@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public void onCreate() {
    // TODO Auto-generated method stub
    super.onCreate();
    Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.example.enwaye_connect.MainActivity");
    startActivity( LaunchIntent );
}

点击后退按钮开始服务：

Intent start= new Intent(this, Startappservice .class);
        startService(start);

添加您的清单：

 <service android:name="your_package_name.Startappservice" >
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
            <action android:name="our_package_name.Startappservice" />
        </intent-filter>
    </service>

Answer 2

您必须使用Service课程。创建一个派生自它的类，然后您可以将您的方法添加到服务中。

public class MyService extends Service {

    // This is used to establish a communication with the service.
    public class LocalBinder extends Binder {
        LocalService getService() {
            return LocalService.this;
        }
    }


    // Called when the service is created
    @Override
    public void onCreate() {
       // YOUR CODE
    }

    // Called when the service is started
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // YOUR CODE
        return START_STICKY;
    }

    // called when the service instance is destroyed
    @Override
    public void onDestroy() {
         // YOUR CODE
    }

    // Returns the binder which is used for communication with the service.
    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }
}

开始使用服务：

Intent start= new Intent(this, MyService.class);
startService(start);

如何为android开发创建后台服务

2 个答案: