通过ID从以编程方式添加的EditText中获取文本

Question

I have a series of programmatically added EditTexts in a Linearlayout with id's that I assigned using the

int id = 100;
EditText field =  new EditText(getActivity());
field.setId(id);

I need to get the text from the EditText's and I keep getting nullPointerException when I try to get the text from it.

EditText temp = (EditText)view.findViewById(id);
ans = ans+Double.parseDouble(temp.getText().toString());

Also the view is in a fragment if that makes any difference.

Thanks for any answers.

Answer 1

just make the field as a member variable instead a local variable. Or make sure that view is the view where you have added your field

Answer 2

将id变量声明为private并继续使用id ++添加edittext，然后尝试获取id即可获取EditText的id，直到获得空指针异常为止。