TextInputLayout not showing when View added programmatically

Question

I noticed some strange behaviour of TextInputLayout:

When I add the following to my layout:

Answer 1

You should change hint, not on EditText, but on TextInputLayout. So it will be:

TextInputLayout v = (TextInputLayout) LayoutInflater.from(this).inflate(R.layout.edittext_w_surrounding_textinputlayout, null);
v.setHint("Added programmatically");

TextInputLayout has it's own hint parameter and when inflating from layout it get's hint from it's child EditText and set empty hint on it.

When you want to change hint programatically you have to call textInputLayout.setHint(String text) instead of changing EditText hint

Answer 2

I use this ((FrameLayout) findViewById(R.id.framePreview)).addView(preview); with no issues at all, maybe its the view type? should this

ViewGroup root = (ViewGroup) findViewById(R.id.root);
root.addView(v);

not be this

LinearLayout root = (LinearLayout) findViewById(R.id.root);
root.addView(v);