// Copyright 2004-present Facebook. All Rights Reserved. #import "RCTWrapperExampleView.h" #import @implementation RCTWrapperExampleView { NSTimer *_timer; CGSize _intrinsicContentSize; } - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor whiteColor]; _intrinsicContentSize = CGSizeMake(64, 64); _timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(tick) userInfo:nil repeats:YES]; UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tick)]; [self addGestureRecognizer:gestureRecognizer]; } return self; } - (void)tick { _intrinsicContentSize.width = 32 + arc4random() % 128; _intrinsicContentSize.height = 32 + arc4random() % 128; [self invalidateIntrinsicContentSize]; [self.superview setNeedsLayout]; } - (CGSize)intrinsicContentSize { return _intrinsicContentSize; } - (CGSize)sizeThatFits:(CGSize)size { return CGSizeMake( MIN(size.width, _intrinsicContentSize.width), MIN(size.height, _intrinsicContentSize.height) ); } @end RCT_WRAPPER_FOR_VIEW(RCTWrapperExampleView)