android tutorial - Developer android | Linear Layout in Android Layout - android app development - android studio - android app developement
Linear Layout
LinearLayout is a view group that aligns all children in a single direction, vertically or horizontally.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:orientation="vertical" >
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/to" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/subject" />
<EditText
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="top"
android:hint="@string/message" />
<Button
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="@string/send" />
</LinearLayout>click below button to copy code from our android learning website - android tutorial - team
- One more important attribute in linear layout is Layout Weight
- LinearLayout also supports assigning a weight to individual children with the android:layout_weight attribute. This attribute assigns an "importance" value to a view in terms of how much space it should occupy on the screen.
LinearLayout Attributes
| Attribute | Description |
|---|---|
| android:orientation | This specifies the direction of arrangement and you will use "horizontal" for a row, "vertical" for a column. The default is horizontal. |
| android:weightSum | Sum up of child weight |
| android:gravity | This specifies how an object should position its content, on both the X and Y axes. Possible values are top, bottom, left, right, center, center_vertical, center_horizontal etc. |
| android:divider | This is drawable to use as a vertical divider between buttons. You use a color value, in the form of "#rgb", "#argb", "#rrggbb", or "#aarrggbb". |