In Android RelativeLayout maxWidth doesn't work

Question

I got RelativeLayout in content:

<RelativeLayout xmlns:
    android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:maxWidth="350dp"
    ></RelativeLayout>

android:maxWidth="350dp" doesn't work. With wrap_content for layout_width and layout_height neither works `.

You got android:layout_width="match_parent" that means your layout will be as alrge in width as it's possible — A. Shevchuk
@A.Shevchuk I changed it for wrap_content but its the same. — Janusz j.
I just checked the documentation for RelativeLayout or even ViewGroupp and their isn't an attribute for android:maxWidth. It's been declared per View and not all, so for example the Views EditText and ContraintLayout all have that attribute. — cincy_anddeveloper

cincy_anddeveloper cincy_anddeveloper · Accepted Answer · 2017-12-01T16:54:13

The documentation for RelativeLayout and even ViewGroup doesn't mention an attribute for android:maxWidth. This attribute, as well maxHeight, are instead declared per View, inside of the attrs.xml file of the Android SDK. So, for example the Views TextView, EditText, ImageView and ContraintLayout, all have that attribute, but Spinner does not. You have to implement complex layouts, create custom ViewGroups that support maxWidth/maxHeight or use multiple layout files with dimension modifiers to achieve the same effect.

In Android RelativeLayout maxWidth doesn't work

2 Answers