回答編集履歴
1
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test
CHANGED
@@ -73,3 +73,169 @@
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@end
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回答追記
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---
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画面の幅にから`20px`づつ控えられたサイズで画像の幅を固定して、その比率に合わせて高さを計算して画像をリサイズして、最後に角丸にするコードを書いてみました。
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※ 幅を基準にしているので横長の画像は大丈夫ですが、縦長の画像だと下にはみ出す可能性があります、あとは好きなように調整してください。
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参考にしてみてください。
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```
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// ViewController.h
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#import <UIKit/UIKit.h>
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@interface ViewController : UIViewController
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@end
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@interface UIImage (Additional)
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- (UIImage*) btk_ImageResized : (CGSize)size;
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@end
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```
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```
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// ViewController.m
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#import "ViewController.h"
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@interface ViewController ()
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@end
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@implementation ViewController
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- (void)viewDidLoad {
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[super viewDidLoad];
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CGFloat imageMargin = 20;
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CGFloat width = [UIScreen mainScreen].bounds.size.width - imageMargin * 2;
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UIImage *image = [UIImage imageNamed:@"mm2"];
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CGFloat imageWidth = image.size.width;
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CGFloat imageHeight = image.size.height;
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CGFloat w = width / imageWidth;
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CGFloat h = imageHeight * w;
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// 画像リサイズ
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UIImage * resizeImage = [image btk_ImageResized:CGSizeMake(width, h)];
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//UIImageViewの生成
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UIImageView *imageView = [[UIImageView alloc] initWithImage: resizeImage];
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imageView.frame = CGRectMake(20, 100, width, h);
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imageView.contentMode = UIViewContentModeScaleAspectFit;
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[self.view addSubview:imageView];
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[imageView layer].masksToBounds = YES;
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[imageView layer].cornerRadius = 10;
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}
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@end
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@implementation UIImage (Additional)
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- (UIImage*) btk_ImageResized : (CGSize)size
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{
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if(CGSizeEqualToSize(self.size, size) && self.imageOrientation == UIImageOrientationUp){
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// No need to resize nor convert orientation
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return self;
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}
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UIGraphicsBeginImageContext(size);
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@try {
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CGContextRef context = UIGraphicsGetCurrentContext();
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CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
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[self drawInRect:CGRectMake(0, 0, size.width, size.height)];
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return UIGraphicsGetImageFromCurrentImageContext();
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}
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@finally {
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UIGraphicsEndImageContext();
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}
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}
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@end
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```
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