Android | How to Center Views & Content Horizontally and Vertically?
How to center a view or its content e.g. TextView or Button horizontally and vertically? layout_gravity can be used to position a view in the center of its parent. While gravity attribute is used to position view’s content e.g. “text” in the center of the view.
( 1 ) Center Views Horizontally

- Place target views in a
<LinearLayout> - Set
LinearLayoutattributeandroid:orientation="vertical"" - Set views attribute
android:layout_gravity="center"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_margin="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="TextView"
android:layout_gravity="center"
android:background="#333"
android:textColor="#fff"
/>
<Button
androida:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Button"/>
</LinearLayout>
( 2 ) Center Views Vertically

- Place target views in a
<LinearLayout> - Set
LinearLayoutattributeandroid:orientation="horizontal"" - Set views attribute
android:layout_gravity="center"
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_margin="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="TextView"
android:layout_gravity="center"
android:background="#333"
android:textColor="#fff"
/>
<Button
androida:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Button"/>
</LinearLayout>
( 3 ) Center Views Horizontally & Vertically

- Place a
<LinearLayout>with vertical orientation within a parent<LinearLayout>with horizontal orientation - Set views & child
<LinearLayout>attributeandroid:layout_gravity="center"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_margin="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="TextView"
android:layout_gravity="center"
android:background="#333"
android:textColor="#fff"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Button"/>
</LinearLayout>
</LinearLayout>
( 4 ) Center Text Horizontally

- Set view attribute
android:gravity="center_horizontal"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_margin="10dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="TextView"
android:gravity="center_horizontal"
android:background="#333"
android:textColor="#fff" />
</LinearLayout>
( 5 ) Center Text Horizontally & Vertically

- Set view attribute
android:gravity="center_horizontal"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_margin="10dp">
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:padding="5dp"
android:text="TextView"
android:gravity="center"
android:background="#333"
android:textColor="#fff" />
</LinearLayout>