Use of the relative layout of Android)

Android: layout_above = "@ ID/label": place the bottom of the control above the given control

Android: layout_below = "@ ID/label" place the top of the control under the given control

Android: layout_toleftof = "@ ID/label" align the right edge of the control with the left edge of the control with the given ID

Android: layout_torightof = "@ ID/label" align the left of the control with the right edge of the control with the given ID

Android: layout_alignbaseline = "@ ID/" align the baseline of this control with the baseline of the control with the given ID

Android: layout_alignleft = "@ ID/" align the left edge of the control with the given ID

Android: layout_aligntop = "@ ID/" align the top edge of the control with the given ID

Android: layout_alignright = "@ ID/" align the right edge of the control with the specified ID

Android: layout_alignbottom = "@ ID/" align the bottom edge of the control with the specified ID

Android: layout_alignparentleft = "true" if the value is true, the current control is aligned with the left edge of its parent control.

Android: layout_alignparenttop = "true" if the value is true, the current control is aligned with the top of its parent control.

Android: layout_alignparentright = "true" if the value is true, the current control is aligned with the right of its parent control.

Android: layout_alignparentbottom = "true" if the value is true, the current control is aligned with the bottom of its parent control.

Android: layout_centerinparent = "true" if "true", the current control is centered horizontally and vertically by its parent control.

Android: layout_centerhorizontal = "true" if "true", the current control is centered in the vertical direction of its parent control.

Android: layout_centervertical = "true" if "true", the current control is centered in the horizontal direction of its parent control.