[Android] Application class and dealing with Singleton

survey Application class and dealing with Singleton,get the article and code resource from Singleton

[MySQL] How can I ignore the difference between upper and lower case when searching with mysql (轉貼)

將所設定的欄位屬性，字型設定為latin1_general_cs 及可。

參考: the difference between upper and lower case when searching with mysql

[Android] Using JSoup in Android(轉貼)

轉貼來源Using JSoup in Android
參考:How to get list of files/directories of an directory url in java?
Jsoup jar

需新增android.permission.INTERNET (permission) 至AndroidManifest.xml

MainActivity.java

activity_main.xml