Service示例代码

代码清单：

ServiceDemoAct.java

package foolstudio.demo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class ServiceDemoAct extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_view);

        Button btnStart = (Button)findViewById(R.id.BTN_START);
        Button btnStop = (Button)findViewById(R.id.BTN_STOP);
        btnStart.setOnClickListener(this);
        btnStop.setOnClickListener(this);
    }

    @Override
    //按钮被点击时回调
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch(v.getId() ) {
            case R.id.BTN_START: { //点击启动服务按钮
                doStart();
                break;
            }
            case R.id.BTN_STOP: {  //点击停止服务按钮
                doStop();
                break;
            }
        }
    }

    //启动服务操作
    private void doStart() {
        Intent startService = new Intent(this, DummyService.class);
        this.startService(startService);
    }

    //停止服务操作
    private void doStop() {
        Intent startService = new Intent(this, DummyService.class);
        this.stopService(startService);
    }
};

DummyService.java

package foolstudio.demo;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;


public class DummyService extends Service {

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

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();

        Log.d(getClass().getName(), "Service created.");
    }

    @Override
    public void onStart(Intent intent, int startId) {
        // TODO Auto-generated method stub
        super.onStart(intent, startId);

        Toast.makeText(this, "I'm a service!", Toast.LENGTH_LONG).show();

        Log.d(getClass().getName(), "Service starting...");
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();

        Log.d(getClass().getName(), "Service destroyed.");
    }
};

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=""
      package="foolstudio.demo"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".ServiceDemoAct"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:label="DummyService" android:name=".DummyService">
            <intent-filter>
                <action android:name="foolstudio.demo.DummyService" />
            </intent-filter>
        </service>
    </application>
    <uses-sdk android:minSdkVersion="3" />
</manifest>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/app_name"
        android:gravity="center_horizontal"
        android:padding="10sp"
        android:textSize="8pt"
        android:textColor="#00FF00" />
    <Button android:id="@+id/BTN_START"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Start service" />
    <Button android:id="@+id/BTN_STOP"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Stop service" />
</LinearLayout>