What is exact difference between gravity and layout
Possible Duplicate:
Android - gravity and layout_gravity
I have been working on android xml's. I have used android:layout_gravity="center"
to align components in specific position.
Now a days, when I was working on a Dialog like Activity , I came across android:gravity="center"
. What I found there was, gravity
was used to align its child
to a specific position.
I would share an example of what it is,
android:gravity="center"
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="vertical" >
<EditText
android:id="@+id/enterNumberEdit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:hint="Enter No." >
<requestFocus />
</EditText>
</LinearLayout>
It aligns the child of LinearLayout
in center.
android:layout_gravity="center"
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical"
android:background="@drawable/dialog_background" >
</LinearLayout>
It aligns the LinearLayout
itself in center.
Now my questions are:
gravity
is for child components and layout_gravity
is for parent component. gravity
over layout_gravity
. I have found this much explanation working on xml's so far. I would like to hear much better explanation of it. Let me know, if I am wrong somewhere
layout_
attribute gives instructions to the parent view. layout_gravity
, you'll probably find gravity
more useful. If your view does not take up an entire dimension of its' parent, you might want to align it depending on your desired look. Their name should help you :
android:gravity
sets the gravity of the content of the View
its used on.
android:layout_gravity
sets the gravity of the View
or Layout
in its parent.
For more info visit this site
android:gravity sets the gravity of the content of the View its used on.
android:layout_gravity sets the gravity of the View or Layout in its parent.
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