Attribute meaning in the Android layout File

Android: layout_below: place the top of the control under the control with the given ID
Android: layout_toLeftOf align the right edge of the control with the left edge of the control with the given ID
Android: layout_toRightOf align the left edge of the control with the right edge of the control with the given ID
Android: layout_alignBottom: Compares the bottom edge of the control with the bottom edge of the given ID control.
Android: layout_alignLeft: Align the left edge of the control with the given ID
Android: layout_alignRight: Align the right edge of the control with the right edge of the given ID Control
Android: layout_alignTop: aligntop

Android: layout_alignParentBottom if the value is true, the bottom of the control is aligned with the bottom of the parent control.
Android: layout_alignParentLeft if the value is true, the left side of the control is aligned with the left side of the parent control.
Android: layout_alignParentRight if the value is true, the right side of the control is aligned with the right side of the parent control.
Android: layout_alignParentTop if the value is true, the top of the space is aligned with the top of the parent control.

Android: layout_centerHorizontal
Android: layout_centerInParent if the value is true, the control is centered in the horizontal and vertical directions of the parent control.
Android: layout_centerVertical if the value is true, the control will be centered in the vertical direction

Android: layout_marginTop
Android: layout_marginBottom distance between the lower side of the control and other controls
Android: layout_marginLeft
Android: layout_marginRight distance between the control and other controls on the right
Android: layout_margin the spacing between the control and other controls

Android: padding distance within the padding Control
Android: paddingLeft left padding distance on the left side of the control
Android: paddingRight fill distance on the right side of the control
Android: paddingBottom padding distance on the top of the control
Android: paddingTop padding distance at the bottom of the control