Buttonにiconと文字を入れる
3002 ワード
私たちはよくbuttonの上にiconも文字もあるbuttonを作る必要があります.左icon右文字か、上icon下文字かもしれません.UIButtonは直接このように配置する機能を提供していないので、皆さんも使えるかもしれません. UIButtonのcategoryを追加します.hファイル .mファイル
- (void)titleImageHorizontalAlignmentWithSpace:(float)space;
- (void)imageTitleHorizontalAlignmentWithSpace:(float)space;
- (void)titleImageVerticalAlignmentWithSpace:(float)space;
- (void)imageTitleVerticalAlignmentWithSpace:(float)space;
- (void)titleImageHorizontalAlignmentWithSpace:(float)space;
{
[self resetEdgeInsets];
[self setNeedsLayout];
[self layoutIfNeeded];
CGRect contentRect = [self contentRectForBounds:self.bounds];
CGSize titleSize = [self titleRectForContentRect:contentRect].size;
CGSize imageSize = [self imageRectForContentRect:contentRect].size;
[self setContentEdgeInsets:UIEdgeInsetsMake(0, 0, 0, space)];
[self setTitleEdgeInsets:UIEdgeInsetsMake(0, -imageSize.width, 0, imageSize.width)];
[self setImageEdgeInsets:UIEdgeInsetsMake(0, titleSize.width+space, 0, -titleSize.width - space)];
}
- (void)imageTitleHorizontalAlignmentWithSpace:(float)space;
{
[self resetEdgeInsets];
[self setTitleEdgeInsets:UIEdgeInsetsMake(0, space, 0, -space)];
[self setContentEdgeInsets:UIEdgeInsetsMake(0, 0, 0, space)];
}
- (void)titleImageVerticalAlignmentWithSpace:(float)space;
{
[self verticalAlignmentWithTitleTop:YES space:space];
}
- (void)imageTitleVerticalAlignmentWithSpace:(float)space;
{
[self verticalAlignmentWithTitleTop:NO space:space];
}
- (void)verticalAlignmentWithTitleTop:(BOOL)isTop space:(float)space ;
{
[self resetEdgeInsets];
[self setNeedsLayout];
[self layoutIfNeeded];
CGRect contentRect = [self contentRectForBounds:self.bounds];
CGSize titleSize = [self titleRectForContentRect:contentRect].size;
CGSize imageSize = [self imageRectForContentRect:contentRect].size;
float halfWidth = (titleSize.width + imageSize.width)/2;
float halfHeight = (titleSize.height + imageSize.height)/2;
float topInset = MIN(halfHeight, titleSize.height);
float leftInset = (titleSize.width - imageSize.width)>0?(titleSize.width - imageSize.width)/2:0;
float bottomInset = (titleSize.height - imageSize.height)>0?(titleSize.height - imageSize.height)/2:0;
float rightInset = MIN(halfWidth, titleSize.width);
if (isTop) {
[self setTitleEdgeInsets:UIEdgeInsetsMake(-titleSize.height-space, - halfWidth, imageSize.height+space, halfWidth)];
[self setContentEdgeInsets:UIEdgeInsetsMake(topInset+space, leftInset, -bottomInset, -rightInset)];
} else {
[self setTitleEdgeInsets:UIEdgeInsetsMake(imageSize.height+space, - halfWidth, -titleSize.height-space, halfWidth)];
[self setContentEdgeInsets:UIEdgeInsetsMake(-bottomInset, leftInset, topInset+space, -rightInset)];
}
}
- (void)resetEdgeInsets
{
[self setContentEdgeInsets:UIEdgeInsetsZero];
[self setImageEdgeInsets:UIEdgeInsetsZero];
[self setTitleEdgeInsets:UIEdgeInsetsZero];
}