Created
February 10, 2017 08:22
-
-
Save mario1in/268f5077c9b751f12656224c6a973978 to your computer and use it in GitHub Desktop.
图片居于顶部对齐显示
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| CGSize imageSize = image.size; | |
| if (imageSize.height > imageSize.width) { | |
| weakSelf.imageView.contentMode = UIViewContentModeScaleAspectFit; | |
| weakSelf.imageView.image = image; | |
| return; | |
| } | |
| CGFloat imageViewOriginX = 0; | |
| CGFloat imageViewOriginY = 0; | |
| CGFloat imageViewWidth; | |
| CGFloat imageViewHeight; | |
| CGFloat widthScaleFactor = CGRectGetWidth(weakSelf.frame) / imageSize.width; | |
| CGFloat heightScaleFactor = CGRectGetHeight(weakSelf.frame) / imageSize.height; | |
| // 计算imageView的缩放大小 | |
| if (widthScaleFactor < heightScaleFactor) { | |
| imageViewWidth = weakSelf.bounds.size.width; | |
| imageViewHeight = weakSelf.bounds.size.width * (imageSize.height / imageSize.width); | |
| } else { | |
| imageViewWidth = weakSelf.bounds.size.height * (imageSize.width / imageSize.height); | |
| imageViewHeight = weakSelf.bounds.size.height; | |
| } | |
| // 计算x | |
| imageViewOriginX += (weakSelf.frame.size.width - imageViewWidth)/2; | |
| // 计算y | |
| if (imageSize.width >= imageSize.height) { | |
| imageViewOriginY += 64.f; | |
| } | |
| [weakSelf.imageView mas_remakeConstraints:^(MASConstraintMaker *make) { | |
| make.top.mas_equalTo(weakSelf).mas_offset(imageViewOriginY); | |
| make.left.mas_equalTo(weakSelf).mas_offset(imageViewOriginX); | |
| make.width.mas_equalTo(imageViewWidth); | |
| make.height.mas_equalTo(imageViewHeight); | |
| }]; | |
| [weakSelf layoutIfNeeded]; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment