iOS Content Properties Summary

Four easy-to-confuse attributes

1, TextAlignment: The horizontal direction of the text alignment method

1> value

Nstextalignmentleft

Nstextalignmentcenter

Nstextalignmentright

2> which controls have this property: A control that is generally capable of displaying text has this property

Uitextfield

UILabel

Uitextview

2.ContentVerticalAlignment: Vertical alignment of content

1> value

Uicontrolcontentverticalalignmentcenter

Uicontrolcontentverticalalignmenttop

Uicontrolcontentverticalalignmentbottom

2> which controls have this property: A control that inherits to Uicontrol or Uicontrol itself

Uicontrol

UIButton

Uitextfield ...

3.contentHorizontalAlignment: Horizontal alignment of content

1> value

Uicontrolcontenthorizontalalignmentcenter

Uicontrolcontenthorizontalalignmentleft

Uicontrolcontenthorizontalalignmentright

2> which controls have this property: A control that inherits to Uicontrol or Uicontrol itself

Uicontrol

UIButton

Uitextfield ...

4.contentMode: Content Mode (controls how content is aligned), generally useful for uiimageview

1> value

Uiviewcontentmodescaletofill: Stretches the picture to fill the entire Uiimageview

Uiviewcontentmodescaleaspectfit: Stretch to fit the entire Uiimageview according to the image's original aspect ratio

Uiviewcontentmodescaleaspectfill: Stretch to the width of the image as the width of the uiimageview, or the height of the image to the height of the Uiimageview, as the picture's original aspect ratio is stretched.

Uiviewcontentmoderedraw: When the size of the control changes, it is redrawn once (call Setneeddisplay again, call DrawRect)

Uiviewcontentmodecenter

Uiviewcontentmodetop

Uiviewcontentmodebottom

Uiviewcontentmodeleft

Uiviewcontentmoderight

Uiviewcontentmodetopleft

Uiviewcontentmodetopright

Uiviewcontentmodebottomleft

Uiviewcontentmodebottomright

2> which controls have this property: All UI controls have