android gravity vs android layout gravity
This simple example show how android:gravity and android:layout_gravity affect the placement.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android_layout_width="match_parent"
android_layout_height="match_parent"
android_padding="16dp"
android_orientation="vertical"
tools_context="com.blogspot.android_er.androidgravity.MainActivity">
<TextView
android_layout_width="wrap_content"
android_layout_height="wrap_content"
android_layout_margin="20dp"
android_layout_gravity="center_horizontal"
android_autoLink="web"
android_text="http://android-er.blogspot.com/"
android_textStyle="bold"/>
<LinearLayout
android_layout_width="match_parent"
android_layout_height="match_parent"
android_layout_margin="10dp"
android_background="#D00000">
<TextView
android_layout_width="match_parent"
android_layout_height="200sp"
android_layout_margin="10dp"
android:gravity="center"
android_layout_gravity="center"
android_background="#0000C0"
android_textSize="28sp"
android_textStyle="bold"
android_text="android-er"/>
</LinearLayout>
</LinearLayout>
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