Android Interface Layout

First, LinearLayout

LinearLayout, also known as linear layout, is a very common layout that contains controls that are arranged in a linear direction.

android:orientation ="Horizontal" layout direction,vertical vertical layout, horizontal horizontal orientation

android:layout_gravity= "center" specifies how the control is aligned in the layout. It is important to note, however, that only alignment in the vertical direction will take effect when the linearlayout is in the horizontal direction, because the horizontal length is not fixed at this point, and each time a control is added, the length in the horizontal direction will change, so you cannot specify Alignment in that direction. In the same way, when the LinearLayout is vertical, only the horizontal alignment will take effect.

android:layout_weight= "1" distributes the space on the layout direction proportionally. Note: If the layout is horizontal android:layout_width= "0DP", if the vertical direction will android:layout_height= "0DP"

Second, relativelayout

Also known as relative layout, is a very common layout that allows controls to appear anywhere in the layout in a relatively positioned way.

Android:layout_alignparentleft= "True" is based on the left alignment of the parent space, with the same as the top, right, and bottom alignment.

android:layout_alignleft= "@id/button3" aligns the left edge of a space with the xxx space, while the top, right, and bottom are aligned.

Android:layout_centerinparent= "True" is based on the display in the parent space play.

Android:layout_above= "@id/button3" place space on top of xxx space

android:layout_below= "@id/button3" place space under XXX space

android:layout_toleftof= "@id/button3" place space on the left of xxx space

android:layout_torightof= "@id/button3" place space on the right side of xxx space

Third, Framelayout

Also known as a single-frame layout, is a less-used layout, and all controls are overlapped by the upper-left corner of the parent space.

Iv. Tablelayout

Using tables to arrange controls, this layout is also not very common. Each addition to a TableRow in Tablelayout indicates that a row has been added to the table.

android:stretchcolumns= "1" is used in tablelayout, which means that a column in the tablelayout is allowed to be stretched to automatically fit the screen width.

Android:layout_span= "2" is used in controls under TableRow to represent merged cells

Android Interface Layout