Can you center a Button in RelativeLayout?
AndroidLayoutAndroid Problem Overview
I'm trying to center a button in relative layout, is this possible? I've tried the Gravity and Orientation functions but they don't do anything.
Android Solutions
Solution 1 - Android
Try
android:layout_centerHorizontal="true"
Exactly like this, it works for me:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ff0000">
<Button
android:id="@+id/btn_mybutton"
android:layout_height="wrap_content"
android:layout_width="124dip"
android:layout_marginTop="5dip"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
Solution 2 - Android
You can use CENTER_IN_PARENT for relative layout.
Add android:layout_centerInParent="true"
to element which you want to center in the RelativeLayout
Solution 3 - Android
Arcadia, just try the code below. There are several ways to get the result you're looking for, this is one of the easier ways.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relative_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center">
<Button
android:id="@+id/the_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Centered Button"/>
</RelativeLayout>
Setting the gravity of the RelativeLayout itself will affect all of the objects placed inside of it. In this case, it's just the button. You can use any of the gravity settings here, of course (e.g. center_horizontal, top, right, and so on).
You could also use this code below:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/relative_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="@+id/the_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Centered Button"
android:layout_centerInParent="true"/>
</RelativeLayout>
Solution 4 - Android
Summarized
Adding:
android:layout_centerInParent="true"
just works on RelativeLayout, if one of the following attributes is also set for the view:
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
which alignes the child view to the parent view. The "center" is based on the axis of the alignement you have chosen:
left/right -> vertical
top/bottom -> horizontal
Setting the gravity of childs/content inside the view:
android:gravity="center"
is centering the child inside the parent view in any case, if there is no alignment set. Optional you can choose:
<!-- Axis to Center -->
android:gravity="center_horizontal"
android:gravity="center_vertical"
<!-- Alignment to set-->
android:gravity="top"
android:gravity="bottom"
android:gravity="left"
android:gravity="right"
android:gravity="fill"
...
Then there is:
android:layout_gravity="center"
which is centering the view itself inside it's parent
And at last you can add the following attribute to the parents view:
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
Solution 5 - Android
Its easy, don't align it to anything
<Button
android:id="@+id/the_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Centered Button"/>
Solution 6 - Android
Use the attribute android:centerInParent="true"
inside a view ,
when you want to center the view in Relative layout.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="NWE"
android:textSize="30dp"/>
</RelativeLayout>
Solution 7 - Android
To center align in one of the direction use android:layout_centerHorizontal="true" or android:layout_centerVertical="true" in the child layout
Solution 8 - Android
It's really easy. Try the code below,
<RelativeLayout
android:id="@+id/second_RL"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/first_RL"
android:background="@android:color/holo_blue_bright"
android:gravity="center">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</RelativeLayout>
Solution 9 - Android
It's pretty simple, just use Android:CenterInParent="true"
to center both in horizontal and vertical, or use Android:Horizontal="true"
to center in horizontal and Android:Vertical="true"
And make sure you write all this in RelaytiveLayout
Solution 10 - Android
Removing any alignment like android:layout_alignParentStart="true" and adding centerInParent worked for me. If the "align" stays in, the centerInParent doesn't work
Solution 11 - Android
you must have aligned it to left or right of parent view
don't use any of these when using android:centerInParent="true"
codes:-
android:layout_alignParentLeft="true"
android:layout_alignParentLeft="true"
android:layout_alignRight=""
etc.