There are two activities.
There are numberpicker and button in the first activity, the second activity will appear after the button of the first activity has been clicked.
There are a textview and a button in the second activity, if the second activity is appear, the number which transfer from the first activity will show in the textview in English.
If you click the button, the first activity will be brought to the front of screen, the number will show in Chinese.
P.S. 請同學別抄襲，老師和助教會知道的哈哈哈哈哈~
by KevinChang