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Android setOnClickListener 的寫法

         final Button button = (Button) findViewById(R.id.button_id); 


寫法一:
         button.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 // Perform action on click
             }
         }); 
寫法二:
        button.setOnClickListener(new ButtonClick());
        class ButtonClick implements OnClickListener {
                 public void onClick(View v) {
                     // Perform action on click 
                 }
       }

Android 4.0 截圖方法

         Android 4.0 的截圖方法很簡單,只要同時按下電源鍵與降低聲音鍵,等聽到拍照的喀嚓聲音
截圖就完成了!!!

img onmouseover filter or change image

1.Filter
<img src="a.jpg" onmouseover="this.style.filter='alpha(opacity=\'50\')';" onmouseout="this.style.filter='alpha(opacity=\'100\')';">

2.Change Image
function changeimg(id,imgf){
 var chid = document.getElementById(id);
 chid.src = imgf;
}
<img src="a.jpg" id="imgab" onmouseover="changeimg('imgab','b.jpg');" onmouseout="changeimg('imgab','a.jpg');">

Fedora Apache Web Server & MySql Restart

Web Server restart
=======================================
Usage: /usr/sbin/httpd [-k start|restart|graceful|graceful-stop|stop]
example:
        /usr/sbin/httpd -k stop
        /usr/sbin/httpd -k start
        /usr/sbin/httpd -k restart      

MySql Restart
=======================================       
/etc/init.d/mysqld start
/etc/init.d/mysqld stop
/etc/init.d/mysqld restart      

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