cocoa-touch - 大きな画像を配置するとUIImageViewの画像が歪む

Question

UIImageView で大きな画像を設定しようとすると、画像の解像度が歪みます。小さいビューに合わせながら、画像を同じ解像度に保つ方法はありますか?

Answer 1

imageviewコンテンツモードをアスペクトフィットに設定してみてください。

imageView.contentMode = UIViewContentModeScaleAspectFit;

Answer 2

UIViewContentModeScaleToFill
Scales the content to fit the size of itself by changing the aspect ratio of the content if necessary.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeScaleAspectFit
Scales the content to fit the size of the view by maintaining the aspect ratio. Any remaining area of the view’s bounds is transparent.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeScaleAspectFill
Scales the content to fill the size of the view. Some portion of the content may be clipped to fill the view’s bounds.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeRedraw
Redisplays the view when the bounds change by invoking the setNeedsDisplay method.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeCenter
Centers the content in the view’s bounds, keeping the proportions the same.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeTop
Centers the content aligned at the top in the view’s bounds.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeBottom
Centers the content aligned at the bottom in the view’s bounds.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeLeft
Aligns the content on the left of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeRight
Aligns the content on the right of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeTopLeft
Aligns the content in the top-left corner of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeTopRight
Aligns the content in the top-right corner of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeBottomLeft
Aligns the content in the bottom-left corner of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.

UIViewContentModeBottomRight
Aligns the content in the bottom-right corner of the view.
Available in iOS 2.0 and later.
Declared in UIView.h.