我的滚动视图有问题!我有一个名为 Rootview 的视图,我想将三个子视图添加到滚动视图中。当我将滚动视图添加为子视图时,中间视图和三个子视图消失了。这是我的代码.. Rootview(整个窗口)和滚动视图是出口。
UIView *middleView = [[UIView alloc] initWithFrame:CGRectMake(0, 218, 2024, 218)];
[middleView setBackgroundColor: [UIColor yellowColor]];
[RootView addSubview:middleView];
//create new views for sap systems beginning from left
UIView *firstSystem1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 218)];
[firstSystem1 setBackgroundColor: [UIColor grayColor]];
[middleView addSubview:firstSystem1];
UIView *secondSystem1 = [[UIView alloc] initWithFrame:CGRectMake(305, 0, 300, 218)];
[secondSystem1 setBackgroundColor: [UIColor grayColor]];
[middleView addSubview:secondSystem1];
UIView *thirdSystem1 = [[UIView alloc] initWithFrame:CGRectMake(610, 0, 300, 218)];
[thirdSystem1 setBackgroundColor: [UIColor grayColor]];
[middleView addSubview:thirdSystem1];
CGSize scrollViewContentSize1 = CGSizeMake(2024, 218);
[middleScrollView setContentSize:scrollViewContentSize1];
[middleScrollView addSubview:middleView];
任何人都可以帮助我吗?