android - Dynamically created TextViews in Java - NullPointerException -

i try add dinamically textviews in java. assume when want use settext() method, should earlier connect java's textview object xml's textview - use setid().

at end, got nullpointerexception in line use setid().

my code:

textview[] tvquestion = new textview[numberofquestions]; textview[] tvanswer1 = new textview[numberofquestions]; textview[] tvanswer2 = new textview[numberofquestions]; textview[] tvanswer3 = new textview[numberofquestions];  layoutparams params = new layoutparams(layoutparams.wrap_content,             layoutparams.wrap_content);  (int = 0; < numberofquestions; i++) {     tvquestion[i].setid(view.generateviewid()); // nullpointerexception!     tvanswer1[i].setid(view.generateviewid());     tvanswer2[i].setid(view.generateviewid());     tvanswer3[i].setid(view.generateviewid());      tvquestion[i].setlayoutparams(params);     tvanswer1[i].setlayoutparams(params);     tvanswer2[i].setlayoutparams(params);     tvanswer3[i].setlayoutparams(params);      tvquestion[i].settext(question[i]);     tvanswer1[i].settext(option1[i]);     tvanswer2[i].settext(option2[i]);     tvanswer3[i].settext(option3[i]);      layall.addview(tvquestion[i]);     layall.addview(tvanswer1[i]);     layall.addview(tvanswer2[i]);     layall.addview(tvanswer3[i]); } 

edit:

solution: philipp jahoda's post.

you created array textviews. the textviews inside array null long not initialized.

so need call

tvquestion[i] = new textview(context); tvanswer[i] = new textview(context); // , on ...  // , later tvquestion[i].setid(view.generateviewid()); // , on ... 

before setting id , other stuff.