My Activity is not Called Again in Tab-Bars in android
<p>Hi all:
i am making an application in which i am using Tab-bars</p>

<p>i have a class named HomeScreen where i m making all the tab bars and i have 3 tab bars.
1 with the name of Settings, other with Add and the last with View
so the thing is when i start my application View comes First and then i made a check that if file does not exist then show a message that file does not exist. and i did this in the onCreate method of View Activity... 
now i go to Add tab and showed a dialog there. 
now it in both of these Tabs the The MESSAGE and DIALOG appears only once. when i start the application .. 
how can i set that whenever i click on the tab it should display the MESSAGE or DIALOG according to the condition rather True Or False.. 
please guys Guide me in this... </p>

<p>Thnx a bunch in advance
waiting anxiously for ur kind help and positive response...</p>
