how to create simple voting app like hot or not for android

I was looking for some tutorial or any opensource implementation of simple vote up / vote down any pic on android. Something similar to hot or not.

Can you please tell me how can i impleme开发者_JS百科nt it?. Should i keep the up/down button constant and change the pic or whole activity needs to be changed?

Thanks

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You don't need to change the activity. Just implement ImageView. When a vote has been made, simply change the picture in the ImageView. setImageResource(R.drawable.something); or an image file from storage. EDIT: The votes can be stored in Preferences.