为什么 android studio 设计器不适用于相对布局

Question

is not auto generating XML codes for relative layout, it only works for constraint layout.

When I try to position a view inside a relative layout it only gets positioned at the top corner of the screen.

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".MainActivity">
    <Button
        android:id="@+id/button7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />
</RelativeLayout

What should I do?

Answer 1

I faced the same issue and the i tried the following step;

• Click on the magnet icon (next to the eye icon, top left, next to the Palette menu) so that it's not crossed out: this turns on Autoconnect.
• this will now help you to move the button where ever you want to place it.

Try it and let me know.

Answer 2

Yes if you pull the component on ConstraintLayout, it will guess what you want and set the attributes for you. For RelativeLayout, you need to make the attribute view visible and edit from there. You need to edit parameters like these:

 android:layout_below="@id/name"
 android:layout_alignParentLeft="true"
 android:layout_toLeftOf="@+id/times"