Relativelayout & framelayout & absolutelayout in Android layout manager

3 relativelayout

The position of the Child control is determined by the relative position of the sibling control or parent control. The position of viewa is determined relative to viewb. Make sure that B appears before.

Attribute name	Attribute description
Android: layout_centerhorizontal	The current widget is located in the middle of the parent widget
Android: layout_centervertical	The current control is located in the vertical middle of the parent Control
Android: layout_centerparent	The current control is located in the middle of the parent control's vertical direction.
Android: layout_alignparentbottom	Low-end alignment of the current control and the low-end alignment of the parent Control
Android: layout_alignparentleft	Align the left side of the current control with the left side of the parent Control
Android: layout_alignparentright	Align the right of the current control with the right of the parent Control
Android: layout_alignparenttop	The upper end of the current control is aligned with the upper end of the parent control.
Android: layout_alignwithparentifmissing	When the reference control does not exist or is invisible, refer to the parent Control
Android: layout_torightof	Place the current control on the right of the ID Control
Android: layout_toleftof
Android: layout_abve
Android: layout_below
Android: layout_aligntop
Android: layout_alignbottom
Android: layout_alignleft
Android: layout_alignright
Android: layout_marginleft	White on the left of the Current Control
Android: layout_marginright
Android: layout_margintop
Android: layout_marginbottom

Relavitelayout. xml

<? XML version = "1.0" encoding = "UTF-8"?>
<Relativelayout xmlns: Android = "http://schemas.android.com/apk/res/android"
Android: layout_width = "fill_parent" Android: layout_height = "fill_parent">
<Imageview Android: Id = "@ + ID/iv01" Android: Background = "@ drawable/img01"
Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"
Android: layout_centerhorizontal = "true"/>
<Imageview Android: Id = "@ + ID/iv02" Android: Background = "@ drawable/img02"
Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"
Android: layout_torightof = "@ ID/iv01" Android: layout_aligntop = "@ ID/iv01"/>
<Imageview Android: Id = "@ + ID/IV03" Android: Background = "@ drawable/img03"
Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"
Android: layout_below = "@ ID/iv01" Android: layout_alignleft = "@ ID/iv01"/>
</Relativelayout>

4 framelayout

In framelayout, child controls are drawn through stacks, and all the child controls added later are drawn on the upper layer.

Attribute name	Method	Description
Android: foreground	Setforeground (drawable)	Set to draw on all controls
Android: foregroundgravity	Setforegroundgravity (INT)	Set the gravity attribute of the content drawn on all child Controls

<? XML version = "1.0" encoding = "UTF-8"?>
<Framelayout xmlns: Android = "http://schemas.android.com/apk/res/android"
Android: layout_width = "match_parent" Android: layout_height = "match_parent">
<Textview Android: Id = "@ + ID/big" Android: text = "big" Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content" Android: textsize = "60px"
Android: textcolor = "@ drawable/White"/>
<Textview Android: text = "medium" Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content" Android: textsize = "40px"
Android: textcolor = "@ drawable/darkgray"/>
<Textview Android: text = "small" Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content" Android: textsize = "20px"
Android: textcolor = "@ drawable/ABC"/>
</Framelayout>

5 absolutelayout

<? XML version = "1.0" encoding = "UTF-8"?>
<Absolutelayout xmlns: Android = "http://schemas.android.com/apk/res/android"
Android: layout_width = "match_parent" Android: layout_height = "match_parent">
<Imageview Android: layout_height = "wrap_content" Android: src = "@ drawable/img01"
Android: Id = "@ + ID/imageview1" Android: layout_width = "wrap_content"
Android: layout_x = "57dip" Android: layout_y = "41dip"> </imageview>
<Imageview Android: layout_height = "wrap_content" Android: src = "@ drawable/img02"
Android: Id = "@ + ID/imageview2" Android: layout_width = "wrap_content"
Android: layout_x = "174dip" Android: layout_y = "38dip"> </imageview>
<Textview Android: layout_height = "wrap_content" Android: text = "textview"
Android: layout_x = "98dip" Android: Id = "@ + ID/textview1"
Android: layout_width = "wrap_content" Android: layout_y = "122dip"> </textview>
<Button Android: layout_height = "wrap_content" Android: Id = "@ + ID/button1"
Android: layout_x = "93dip" Android: text = "button" Android: layout_width = "wrap_content"
Android: layout_y = "173dip"> </button>
</Absolutelayout>