Mars Chen Service代码实现小结

Mars Chen Service代码实现总结

总结：

(1)自定义的Service必须和 Activity一样在mainifest中的<application>中进行注册。Manifest中配置常用"."符号，解释如下

例如：

<!-- 注册一个service -->
 <service android:name=".FirstService"></service>

其中FirstService前面"."是接

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.testservice"
    android:versionCode="1"
    android:versionName="1.0" >

中package中包名后面，因此可以组成完整的service名称com.example.testservice.FirstService，找到对应service类。

(1)AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.testservice"
    android:versionCode="1"
    android:versionName="1.0" >


    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />


    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.testservice.TestActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />


                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!-- 注册一个service -->
        <service android:name=".FirstService"></service>
    </application>


</manifest>

(2)FirstService.java:自定义service类

package com.example.testservice;


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


public class FirstService extends Service {


/* (non-Javadoc)
* @see android.app.Service#onBind(android.content.Intent)
*/
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
System.out.println("Service onBind");
return null;
}


/* (non-Javadoc)
* @see android.app.Service#onCreate()
*/
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
System.out.println("Service onCreate");
}


/* (non-Javadoc)
* @see android.app.Service#onDestroy()
*/
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
System.out.println("Service onDestory");
}


/* (non-Javadoc)
* @see android.app.Service#onStartCommand(android.content.Intent, int, int)
*/
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
System.out.println("flag -- >" + flags);
System.out.println("startid -->" + startId);
System.out.println("Service onStartCommand");
return START_NOT_STICKY;
}


}

(3)TestActivity.java:acitivy类，调用service对象

package com.example.testservice;


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


public class TestActivity extends Activity {

private Button start = null;
private Button stop = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);
        
        start = (Button)findViewById(R.id.start);
        stop = (Button)findViewById(R.id.stop);
        
        start.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(TestActivity.this, FirstService.class);
startService(intent);
}
});
        
        stop.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(TestActivity.this, FirstService.class);
stopService(intent);
}
});
    }




    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.test, menu);
        return true;
    }
    
}