Set default(unfocused) TextInputLayout hint textSize

Question

I am trying to change hint text size programmatically, but I just can't find the right method. I'm using setHintTextAppearance, like it's shown in example, but it works only when input is focused or filled with some data. I tried to set EditText textSize also, but still no luck.

textInputLayout.setHintTextAppearance(Vabaco_TextInputLayout_hint_small);
EditText a = textInputLayout.getEditText();
a.setTextSize(8);

felix · Accepted Answer · 2019-08-08T08:58:21.040

2

You can change hint text size when it unfocused using reflection like this;

 try {
        Field filed = TextInputLayout.class.getDeclaredField("mCollapsingTextHelper");
        filed.setAccessible(true);
        Object helper = filed.get(textInputLayout);

        Field f1 = helper.getClass().getDeclaredField("mExpandedTextSize");
        f1.setAccessible(true);

        f1.set(helper,100);
    }
    catch (NoSuchFieldException | IllegalAccessException e) {
        e.printStackTrace();
    }

name of mExpandedTextSize may be different according to the dependency version for TextInputLayout. You should check TextInputLayout and CollapsingTextHelper classes for the name of variables.

Hope this helps you.

edited Aug 08 '19 at 08:58

answered Aug 08 '19 at 08:49

felix

36
1
3

It actually worked! Thanks. The only question is, does f1.set(), second parameter user percent? Because it's for sure not a points. Sorry for late response, though. Had a hard time at job. – Leo Odishvili Aug 14 '19 at 06:32
Actually, I gave a random number but you can give this size like [this](https://stackoverflow.com/questions/8295986/how-to-calculate-dp-from-pixels-in-android-programmatically/19953871#19953871) @LeoOdishvili – felix Aug 15 '19 at 13:02

score 1 · Answer 2 · answered Nov 01 '19 at 18:33

Reflection solution doesn't work on support:design:28.0.0(mExpandedTextSize-> expandedTextSize). Also, Android Q (and later) doesn't support some non-sdk solutions.

Create your custom layout:

public  class CustomTextInputLayout extends TextInputLayout {
    public CustomTextInputLayout(Context context) {
        super(context);
    }

    @Override
    public void addView(View child, int index, ViewGroup.LayoutParams params) {
        if(child instanceof EditText) {
            ((EditText)child).setTextSize(16);
        }

        super.addView(child, index, params);
    }
}

Thank you! Will try to do that on my spare time. – Leo Odishvili Nov 04 '19 at 04:25 — Leo Odishvili, Nov 04 '19 at 04:25

score 0 · Answer 3 · answered Aug 08 '19 at 09:09

If setting the text size programmatically is not required you can try like below,I have disabled TextInputLayout hint,

<android.support.design.widget.TextInputLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:hintEnabled="false">

            <EditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/edittext"
                android:hint="yorhint"
                android:inputType="text"
                android:textColorHint="@color/colorLightBlack"
                android:textSize="10sp" />
        </android.support.design.widget.TextInputLayout>

If required programmatically you can find edittext by id and set the text size.

Set default(unfocused) TextInputLayout hint textSize

3 Answers3