But why you put this code on try and catch block. Firat see your layout and check that the imageview with id R.id.imageView is contain or not.

But why u put this code in try, catch block. Check your layout that present this imageview which id is R.id.imageView.

Here I want to know that for implementing InAppPurchase, It is necessary to upload apk on google play store for testing. And Also Suggest me best tutorial. Thank You !

Put your logic in afterTextChange with help of onTextChaneListener.

You can store your spinner data into Arraylist and aftetr that this whole Arraylist can store in sharedprefrence.