Android control properties Introduction

top	Object on top of its container, without changing its size.
bottom	The objects on the bottom of its container, without changing its size.
left	The object in the left side of its container, without changing its size.
right	The objects on the right side of its container, without changing its size.
center_vertical	The longitudinal center object does not change its size.  Vertical alignment: Align vertically.
fill_vertical	When necessary to increase the longitudinal size of the object to completely fill its container  is filled vertically
center_horizontal	Laterally centered object, does not change its size.  Horizontal alignment: Align horizontally
fill_horizontal	When necessary to increase the size of the object laterally to completely fill its container  fill level direction
center	Vertical and horizontal center of the object, does not change its size.
fill	When necessary to increase the horizontal and vertical size of the object to completely fill its container.
clip_vertical	Additional options, means for the top and / or bottom of the content object according to shear the shear edge of the container is provided on its longitudinal alignment: alignment when the top, bottom cut; top cut when aligned bottom; Shear addition cutting the top and bottom. Vertical cut
clip_horizontal	Additional options, means for the left and / or right side of the content object according to the shear cut edge of the container is provided on its transverse alignment: the left side are aligned, cut right; right side left aligned shear ; addition to the left and right cut. Horizontal cut