java - Android development toggling TextView visibility -


im having trouble setting textview invisible/visible.

basicly want happen when on/off button has been clicked.

what did kind of like

textview.setvisibility(textview.visible); textview.setvisibility(textview.invisible);

when try executing emultor says app has stopped unexcpetedly

are building xml or programmatically?

i make xml file when activity runs change property. sure use setcontentview(r.layout.main); before try textview findviewbyid(...).

call .setvisibility(view.gone); on textview hide it.

call .setvisibility(view.visible); on textview show it.

i have example this. can see code here: https://github.com/ethankhall/morse-messenger/blob/master/src/com/kopysoft/morsemessenger/translate.java


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