android - setVisibility(View.Gone) with SwipeyTabs -

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i'm beginner android programmer, , i'm trying figure out how work swipeytabs. first of all, way find view:

rb2 = (radiobutton) getview().findviewbyid(r.id.rb2); rb2.setonclicklistener(this);

my second question how set visibility of textview or edittext swipeytabs. i've made simple application without swipeytabs, , there use code:

tvplayer1.setvisibility(view.gone);

once use same line of code within swipeytabs, crashes. can explain me why can't work?

thank in advance!

turned out had grammar mistake in line of code.

etplayer1 = (textview) getview().findviewbyid(r.id.etplayer1);

had be:

etplayer1 = (edittext) getview().findviewbyid(r.id.etplayer1);


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