Android mobile phone development uses linear layout and relative layout to realize the vertical and horizontal center of the button

• Android

In the center, there are two different layout methods! LinearLayout and relativelayout, respectively.

1、 The first is the centering under the LinearLayout layout:

Note: Android: Layout_ width="fill_parent" android:layout_ In the height = "fill_parent" attribute, if it is horizontally centered, it will occupy the full screen at least in width; If it is vertically centered, it occupies the full screen in height

2、 Then we talk about the center under the relativelayout layout:

Brief description

Android: gravity = "center_vertical": This is vertically centered

Android: gravity = "bottom": put it at the bottom of the container

Android: gravity = "center": put it in the center of the container

3、 Method of centering two buttons in a row

Method 1:

Method 2:

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