質問編集履歴
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具体的なコードに変更
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File without changes
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@@ -3,11 +3,20 @@
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Objective-Cでのコード
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```lang-Objective-C
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6
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@interface ViewController ()
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@property (strong, nonatomic) IBOutlet UIImageView *canvas;
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@end
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@implementation ViewController
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- (void)viewDidLoad {
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-
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[self viewDidLoad];
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CALayer *layer = [_canvas layer];
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[layer setMasksToBounds:YES];
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[layer setBorderWidth: 3.f];
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[layer setBorderColor:[[UIColor blackColor] CGColor]];
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[self.view insertSubview:_canvas atIndex:0];
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//省略
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}
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//省略
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@end
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```
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