iOS---UIViewContentMode各类型效果

UIViewContentMode

typedef enum {

UIViewContentModeScaleToFill,

UIViewContentModeScaleAspectFit, // contents scaled to fit with fixed aspect. remainder is transparent

UIViewContentModeScaleAspectFill, // contents scaled to fill with fixed aspect. some portion of content may be clipped.

UIViewContentModeRedraw, // redraw on bounds change (calls -setNeedsDisplay)

UIViewContentModeCenter, // contents remain same size. positioned adjusted.

UIViewContentModeTop,

UIViewContentModeBottom,

UIViewContentModeLeft,

UIViewContentModeRight,

UIViewContentModeTopLeft,

UIViewContentModeTopRight,

UIViewContentModeBottomLeft,

UIViewContentModeBottomRight,

} UIViewContentMode;