How to use activity indicator in tabbar controller while switching tab item?

Finally I got the solution of my issue... I called the parsing class in view will appear method that makes me the problem..instead of calling the parsing class in view will appear method I created one user defined method(GetData). In that method I called the parsing class. In view will appear I called the user defined method(GetData) by following code.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.