Android: Center an image

Technically both answers above are correct, but since you are setting your ImageView to fill_parent instead of wrap_content, the image within is not centered, but the ImageView itself is.

Give your ImageView the attributes:

android:scaleType="centerInside"
android:gravity="center"

The scaleType is really only necessary in this case if the image exceeds the size of the ImageView. You may also want different scaleTypes. In conclusion, android:gravity is what you're looking for in this case, but if your ImageView is set to wrap_content, you should set the ImageView's gravity (android:layout_gravity) to be centered within the parent.

In LinearLayout, use: android:layout_gravity="center".

In RelativeLayout, use: android:layout_centerInParent="true".

If you are using a LinearLayout , use the gravity attribute :

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <ImageView android:layout_width="wrap_content"
        android:id="@+id/imageView1"
        android:src="@drawable/icon"
        android:layout_height="wrap_content"
        android:scaleType="centerInside" />
</LinearLayout>

If you are using a RelativeLayout , you can use android:layout_centerInParent as follows :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/icon"
        android:scaleType="centerInside"
        android:layout_centerInParent="true" />

</RelativeLayout>