ios – 如何使用宽度和比例来缩放UIImage

参见英文答案 > Resize UIImage by keeping Aspect ratio and width12个
我有一个比UIImageView小的UIImage,我也应用它,我想知道如何扩展UIImage以适应UIImageView的宽度,但保持原始小图像的宽x高比.

这是我的代码看起来像任何类型的缩放

playerImageView = [[UIImageView alloc] initWithFrame:CGRectMake(10.0,222.0,self.playerView.frame.size.width-20,245.0)];
playerImageView.contentMode = UIViewContentModeBottom;
UIImage *placeholderImage = [UIImage imageNamed: @"placeHolderVault.png"];
[playerImageView setimage:placeholderImage];

任何帮助将不胜感激.

解决方法

使用正确的contentMode.

playerImageView.contentMode = UIViewContentModeScaleAspectFit;