Getting started with Android: Layout

Absolutelayout is not introduced because it has been abolished;
As long as there is an interface, there will be a layout, like swing. Although one is a desktop application and the other is a mobile application, they are similar.

1. linearlayout

Default layout. Components are arranged in a very orderly manner in the predefined direction, similar to flowlayout in swing;
Note:

(1) You can add Android: orientation: vertical/horizontal in <linearlayout>. (2) You can nest <linearlayout>;

2. framelayout

Each component is in the upper left corner. If multiple components appear together, they overlap, similar to the animations superimposed by git;
Application: Online Video Player

Click the button to start playing the video;Main. xml

<? XML version = "1.0" encoding = "UTF-8"?> <Framelayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: Orientation = "vertical"> <imageview Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: src = "@ drawable/frame3"/> <imageview Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: src = "@ drawable/frame2" Android: layout_gravity = "center" // center/> </framelayout>

3. relativelayout

Positioning of each component is based on the up and down, left and right of other components. The default positioning is the top left;
(1) Positioning and componentsAndroid: layout_below = "@ ID/.." Android: layout_above = "@ ID/" Android: layout_toleftof = "@ ID/" Android: layout_torightof = "@ ID /"(2) Positioning and component edge alignmentAndroid: layout_alignleft = "@ ID/" Android: layout_alignright = "@ ID/" Android: layout_aligntop = "@ ID/" Android: layout_alignbottom = "@ ID /"(3) Align positioning with the edge of the parent componentAndroid: layout_alignparenttop = "true" Android: layout_alignparentbottom = "true" Android: layout_alignparentleft = "true" Android: layout_alignparentright = "true"(4) relationships with the entire ScreenAndroid: layout_centerhorizontal = "true" Android: layout_centervertical = "true" Android: layout_centerinparent = "true"(5) distance between componentsAndroid: layout_margintop = "5dp" Android: layout_marginleft = "5dp" Android: layout_marginright = "5dp" Android: layout_marginbottom = "5dp" Android: layout_margin = "5dp"

4. tablelayout

Similar to gridlayout in swing;
Each row in the table layout is enclosed by <tabrow>. The following attributes can be defined in <tablelayout>:
(1) Android: shrinkcolumns = "1" indicates that if there is too much content in the 2nd controls, it will contract and expand to the second line, instead of extending. (2) Android: stretchcolumns = "2" if there is blank, 3rd controls are filled;
In the control, set: (1) Android: layout_column = "2" to place the control in 3rd positions; (2) Android: layout_span = "2" to occupy 2 Unit positions;

TIPS: simple layout tool droiddrawhttp: // code.google.com/p/droiddraw/downloads/detail? Name1_droiddraw-r1b22.zip & can = 2 & Q =