Android Tab Layout with Swipeable Views
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i do like this http://www.androidhive.info/2013/10/android-tab-layout-with-swipeable-views-1/ what should i add code each tab? i have a function in MainActivity test() { TextView tv1 = (TextView)findViewById(R.id.tvFrag1); tv1.setText("test"); } just example .. and i call test() in onCreate ... ERROR i try alert that error "java.lang.NullPointerException" but, call test() in viewPageChangeListener no error ( swipetab 1st ) i wanna setText when open activity before swipetab help me pleaseeee ps. sorry for my english