[英]How to add a View to a ScrollView at a specific position?
我有一个UIView
,矩形大小为(414,736)。 我使ScrollView
的宽度比UIView
大50,高50。 当我将UIView
添加到ScrollView
, UIView
保持水平是可以的 ,但在垂直方向上它位于ScrollView
的底部。 因此,我的滚动部分是顶部。 但是我希望UIView
停留在顶部,而底部成为滚动区域。 如何在ScrollView
上找到具有特定位置的UIView
? 以下代码显示了ScrollView的实现方式。
CGRect screenRect = [[UIScreen mainScreen] bounds];
self.scrollView=[[UIScrollView alloc] initWithFrame:screenRect];
self.scrollView.delegate = self;
self.scrollView.clipsToBounds = YES;
[self.scrollView addSubview:self.drawChart];
self.scrollView.contentSize=CGSizeMake(screenRect.size.width+100,screenRect.size.height+50);
self.scrollView.decelerationRate = UIScrollViewDecelerationRateFast;
self.scrollView.backgroundColor = [UIColor colorWithRed:0.564 green:0.439 blue:0.561 alpha:1];
self.view=self.scrollView;
编辑:
- (void)viewDidLoad {
[super viewDidLoad];
CGRect screenRect = [[UIScreen mainScreen] bounds];
//Database
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
// Build the path to the database file
databasePath = [[NSString alloc]initWithString:[docsDir stringByAppendingPathComponent: @"RECORDS.db"]];
//scroll view
//
self.scrollView=[[UIScrollView alloc] initWithFrame:screenRect];
self.scrollView.delegate = self;
self.scrollView.clipsToBounds = YES;
[self.scrollView addSubview:self.drawChart];
CGRect frame = self.drawChart.frame;
frame.origin = CGPointZero;
self.drawChart.frame = frame;
self.scrollView.contentSize=CGSizeMake(screenRect.size.width+100,screenRect.size.height+50);
self.scrollView.decelerationRate = UIScrollViewDecelerationRateFast;
self.scrollView.backgroundColor = [UIColor colorWithRed:0.564 green:0.439 blue:0.561 alpha:1];
self.view=self.scrollView;
}
谢谢
将chartview添加到scrollview之后
[self.scrollView addSubview:self.drawChart];
请执行下列操作:
CGRect frame = self.drawChart.frame;
frame.origin = CGPointZero;
self.drawChart.frame = frame;
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