Android開發零點起飛(第七章)筆記-單純Android執行Service執行計數只能在Log看到變化

Android開發零點起飛(第七章)筆記-單純Android執行Service執行計數只能在Log看到變化

 

//CountService.java

package com.example.jashsample;

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

public class CountService extends Service {

    private boolean threadDisable;

    private int count;

    @Override
    public IBinder onBind(Intent intent) {
        return null ;
    }

    @Override
    public void onCreate() {
        super.onCreate();
        new Thread( new Runnable() {

            @Override
            public void run() {
                while ( ! threadDisable) {
                    try {
                        Thread.sleep( 1000 );
                    } catch (InterruptedException e) {
                    }
                    count ++ ;
                    Log.v( " CountService " , " Count is " + count);
                }
            }
        }).start();
    }

    @Override
    public void onDestroy() {
        super .onDestroy();
        this .threadDisable = true ;
        Log.v( " CountService " , " on destroy " );
    }

    public int getCount() {
        return count;
    }

}

//MainActivity.java

package com.example.jashsample;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
/*
 00.目的新增一個有Service功能的範例
 01.新增CountService
 02.在設定檔新增<service android:name ="CountService" /> 
 */
public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		this .startService( new Intent( this , CountService. class ));
	}
    @Override
    protected void onDestroy() {
        super .onDestroy();
        this .stopService( new Intent( this , CountService. class ));
    }
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

//AndroidManifest.xml: 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.jashsample"
    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.jashsample.MainActivity"
            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:name="CountService"/> 
    </application>

</manifest>