ios 如何管理 UIImageView 内容模式？
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How to manage UIImageView content mode?
提问by DipakSonara
I have an UIImageView with some fixed rect size. But my images are not fixed in size. I want to display images according to UIImageView's rect size. Whether image is big or large in resolution it must be in fixed display according to UIImageView's size. I am confused in using below assets.
我有一个固定矩形大小的 UIImageView。但是我的图像大小不固定。我想根据 UIImageView 的矩形大小显示图像。无论图像是大还是大，都必须根据 UIImageView 的大小固定显示。我对使用以下资产感到困惑。
UIViewContentModeScaleToFill,
UIViewContentModeScaleAspectFit,
UIViewContentModeScaleAspectFill,
UIViewContentModeRedraw
What to set in autoresize mask ? How do they behave ?
在自动调整大小掩码中设置什么？他们表现如何？
回答by sagarcool89
Please try this code, Hope it will work for you.
请试试这个代码，希望它对你有用。
set UIImageViewcontentModeto UIViewContentModeScaleAspectFillas below :
设置UIImageViewcontentMode于UIViewContentModeScaleAspectFill如下：
imageView.contentMode = UIViewContentModeScaleAspectFill;
set autoresizingMask of UIImageView as below :
设置 UIImageView 的 autoresizingMask 如下：
imageView.autoresizingMask =
( UIViewAutoresizingFlexibleBottomMargin
| UIViewAutoresizingFlexibleHeight
| UIViewAutoresizingFlexibleLeftMargin
| UIViewAutoresizingFlexibleRightMargin
| UIViewAutoresizingFlexibleTopMargin
| UIViewAutoresizingFlexibleWidth );
回答by atulkhatri
You just need these two lines:
你只需要这两行：
imageView.contentMode = UIViewContentModeScaleAspectFill;
imageView.layer.clipsToBounds = YES; // Must do this or else image will overflow
回答by Ali Raza
In swift you set content mode as well
在 swift 中，您也可以设置内容模式
var newImgThumb : UIImageView
newImgThumb = UIImageView(frame:CGRectMake(0, 0, 100, 70))
newImgThumb.contentMode = .ScaleAspectFit
回答by Urkman
Here a solution for swift:
这里有一个快速的解决方案：
let imageView = UIImageView(image: UIImage(named: "backgroundImage"))
imageView.frame = tableView.frame
imageView.contentMode = .ScaleAspectFill
tableView.backgroundView = imageView
回答by kickinbahk
Worth noting that swift 3 has changed as following
值得注意的是，swift 3 已更改如下
.ScaleAspectFitto scaleAspectFit
. ScaleAspectFit到 scaleAspectFit
.ScaleAspectFillto .scaleAspectFill
. ScaleAspectFill到 。scaleAspectFill
回答by NiravPatel
If you want to make your UIImageViewsize according to ratio ,then you must set it's mode to UIViewContentModeScaleAspectFit
如果你想UIImageView根据比例制作你的尺寸，那么你必须将它的模式设置为UIViewContentModeScaleAspectFit
yourimage.contentMode=UIViewContentModeScaleAspectFit;
let me know it is working or not!!!
让我知道它是否有效！！！
Happy Coding.
快乐编码。
回答by SachinVsSachin
Hope this helpful for you
希望这对你有帮助
CGImageRef imageRef = CGImageCreateWithImageInRect([largeImage CGImage], cropRect);
image = [UIImage imageWithCGImage:imageRef]];
CGImageRelease(imageRef);
