How to align LinearLayout at the center of its parent?
AndroidAndroid LayoutAndroid UiAndroid Problem Overview
I've looked through numerous similar questions here at SO, but nothing helps.
I have a hierarchy of different nested layouts, all have android:layout_width="fill_parent", and the inner-most layout has android:layout_width="wrap_content - I need to align it at the center (horizontally). How do I do that?
Update:: I've found the cause of the problem - if I put the inner LinearLayout into RelativeLayout with android:layout_width="fill_parent", it still wraps it's content. The TableRow, however, is really filling the screen.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableRow >
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="1"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="2"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
</TableRow>
</TableLayout>
</FrameLayout>
</LinearLayout>
Android Solutions
Solution 1 - Android
These two attributes are commonly confused:
android:gravitysets the gravity of the content of the View it's used on.android:layout_gravitysets the gravity of the View or Layout relative to its parent.
So either put android:gravity="center" on the parent or android:layout_gravity="center" on the LinearLayout itself.
I have caught myself a number of times mixing them up and wondering why things weren't centering properly...
Solution 2 - Android
Please try this in your linear layout
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
Solution 3 - Android
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<LinearLayout
android:orientation="horizontal"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="1"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="2"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
</RelativeLayout>
consider wrapping relativeLayout over LinearLayout. android:layout_centerHorizontal="true" will position the view center horizontal.
Solution 4 - Android
add layout_gravity="center" or "center_horizontal" to the parent layout.
On a side note, your LinearLayout inside your TableRow seems un-necessary, as a TableRow is already an horizontal LinearLayout.
Solution 5 - Android
This worked for me.. adding empty view ..
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
<com.google.android.gms.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
ads:adSize="BANNER"
ads:adUnitId="@string/banner_ad_unit_id" >
</com.google.android.gms.ads.AdView>
<View
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="1"
/>
</LinearLayout>
Solution 6 - Android
If your parent is a LinearLayout, you can add to it :
android:orientation="vertical"
android:gravity="center"
And to it's child
android:gravity="center"
It should at least center horizontally !
Solution 7 - Android
Try this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableRow >
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:layout_gravity="center_horizontal" >
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="1"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="2"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
</TableRow>
</TableLayout>
</FrameLayout>
</LinearLayout>
Solution 8 - Android
Try <TableRow android:gravity="center_horizontal"> This will center the inner LinearLayout within the tablerow.
Solution 9 - Android
I have faced the same situation while designing custom notification. I have tried with the following attribute set with true.
android:layout_centerInParent.
Solution 10 - Android
this worked for me.
<LinearLayout>
.
.
.
android:gravity="center"
.
.>
<TextView
android:layout_gravity = "center"
/>
<Button
android:layout_gravity="center"
/>
</LinearLayout>
so you're designing the Linear Layout to place all its contents(TextView and Button) in its center and then the TextView and Button are placed relative to the center of the Linear Layout
Solution 11 - Android
@jksschneider explation is almost right. Make sure that you haven't set any gravity to parent layout, and then set layout_gravity="center" to your view or layout.
Solution 12 - Android
I experienced this while working with nested RelativeLayouts. My solution ended up being simple, but it's a little gotcha that's worth being aware of.
My layout was defined with...
android:layout_height="fill_parent"
android:layout_below="@id/someLayout
android:gravity="center"
...however, I didn't think that the layout below this one was placed on top of it. Everything inside this layout was shifted towards the bottom instead of centered. Adding...
android:layout_above="@id/bottomLayout"
...fixed my issue.
Solution 13 - Android
Try this:
android:layout_gravity="center_horizontal"
Solution 14 - Android
for ImageView or others views who layout-gravity or gravity does not exist use :
android:layout_centerInParent="true" in the child
(I had a relative layout with an ImageView as a child).
Solution 15 - Android
The problem is that the root's (the main layout you store the other elements) gravity is not set. If you change it to center the other elements' gravity must work just fine.
Solution 16 - Android
Below is code to put your Linearlayout at bottom and put its content at center. You have to use RelativeLayout to set Layout at bottom.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#97611F"
android:gravity="center_horizontal"
android:layout_alignParentBottom="true"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:text="View Saved Searches"
android:textSize="15dp"
android:textColor="#fff"
android:gravity="center_vertical"
android:visibility="visible" />
<TextView
android:layout_width="30dp"
android:layout_height="24dp"
android:text="12"
android:textSize="12dp"
android:textColor="#fff"
android:gravity="center_horizontal"
android:padding="1dp"
android:visibility="visible" />
</LinearLayout>
</RelativeLayout>