廢話不多說，直接上代碼 --

//保護(hù)左右側(cè)，中間1像素進(jìn)行mode

UIImage * imageProtectLeftRight(UIImage *image, UIImageResizingMode mode)

{

? ? CGFloat top = 0;

? ? CGFloat bottom = 0;

? ? CGFloat left = image.size.width*0.5-1;

? ? CGFloat right = image.size.width*0.5-1;

? ? UIEdgeInsets insets = UIEdgeInsetsMake(top, left, bottom, right);

? ? UIImage *img = [image resizableImageWithCapInsets:insets resizingMode:mode];

? ? return img;

}

//保護(hù)上下側(cè)，中間1像素進(jìn)行mode

UIImage * imageProtectTopBottom(UIImage *image, UIImageResizingMode mode)

{

? ? CGFloat top = image.size.height*0.5-1;

? ? CGFloat bottom = image.size.height*0.5-1;

? ? CGFloat left = 0;

? ? CGFloat right = 0;

? ? UIEdgeInsets insets = UIEdgeInsetsMake(top, left, bottom, right);

? ? UIImage *img = [image resizableImageWithCapInsets:insets resizingMode:mode];

? ? return img;

}

//保護(hù)上下左右側(cè)，中間1像素進(jìn)行mode

UIImage * imageProtect(UIImage *image, UIImageResizingMode mode)

{

? ? CGFloat top = image.size.height*0.5-0.5;

? ? CGFloat bottom = image.size.height*0.5-0.5;

? ? CGFloat left = image.size.width*0.5-0.5;

? ? CGFloat right = image.size.width*0.5-0.5;

? ? UIEdgeInsets insets = UIEdgeInsetsMake(top, left, bottom, right);

? ? UIImage *img = [image resizableImageWithCapInsets:insets resizingMode:mode];

? ? return img;

}