在提示上设置自定义字体，TextInputLayout

<com.google.android.material.textfield.TextInputLayout
    android:id="@+id/textInputLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <com.google.android.material.textfield.TextInputEditText
        android:id="@+id/editText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入内容" />

</com.google.android.material.textfield.TextInputLayout>

TextInputLayout textInputLayout = findViewById(R.id.textInputLayout);
Typeface typeface = Typeface.createFromAsset(getAssets(), "fonts/your_custom_font.ttf");
textInputLayout.setTypeface(typeface);