android - Can't access a compoent after casting set.id() manually -

android - Can't access a compoent after casting set.id() manually -

September 15, 2013

i have 1 little problem, can guys me.

i have code this:

textview tz; textview tv = new textview(this); tv.setid(0x7f090024); tv.settext("hello"); view vv = findviewbyid(0x7f090024);  if (vv != null) {     log.e("number_id", "not null"); } else     log.e("number_id", "null");  // return error (java lang null pointer exception) tz = (textview) findviewbyid(0x7f090024); log.e("test", tz.gettext().tostring());

why result return null , can't value second textfield tz?

it returns null because findviewbyid refers view hierarchy built setcontentview. textview not belong it, can not retrieve findviewbyid.

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