处理 UIScrollView 中子视图(uiviews)的触摸问题
我已经使用代码创建了一个 UIScrollView ,并且创建了子视图,我从数据库动态创建这些子视图,并将其添加到视图数组和 UIScrollviews 中。我正在使用 TouchBegan 和 TouchMoved 方法。我选择的子视图无法识别,但是控件进入touchesBegan并触摸移动方法。我已经发布了下面的代码。请任何人帮助我克服这个问题。
我已经通过代码创建了滚动视图,并且在名为“arrayofviews”的数组中有子视图。这些子视图与数组中的视图相同。我可以在普通视图上移动来自数据库的这些子视图,但是当我将这些视图添加到滚动视图中,但它不起作用。
我已经尝试了网上的很多解决方案,但我无法得到合适的解决方案。
.m 文件
- (void)viewDidAppear:(BOOL)animated { scrollview=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 374)]; scrollview.backgroundColor=[UIColor clearColor]; [scrollview setScrollEnabled:YES]; [scrollview setContentSize:CGSizeMake(300, 600)]; scrollview.showsVerticalScrollIndicator = YES; scrollview.delaysContentTouches=NO; . . . . //here i am retrieving the controls from the DB and adding into the "arrayofviews" array which is an NSMutableArray //I have added subviews in this part to the scroll like [scrollview addSubview:vw1]; [scrollview addSubview:vw2]; . . . scrollview.userInteractionEnabled=NO; scrollview.scrollEnabled=FALSE; [self.view addSubview:scrollview]; [self.view bringSubviewToFront:scrollview]; } -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { scrollview.userInteractionEnabled=YES; [self.nextResponder touchesBegan:touches withEvent:event]; UITouch *touch = [[event allTouches] anyObject]; CGPoint touchLocation; touchLocation.x=scrollview.contentOffset.x; touchLocation.y=scrollview.contentOffset.y; for(UIView *vw in arrayOfViews) { vw.userInteractionEnabled=YES; if([touch view]==vw) { vw.center=touchLocation; } } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event //method to intiate the touch events { [self.nextResponder touchesMoved:touches withEvent:event]; UITouch *touch = [[event touchesForView:scrollview] anyObject]; CGPoint touchLocation1; touchLocation1.x=scrollview.contentOffset.x; touchLocation1.y=scrollview.contentOffset.y; for(UIView *vw in arrayOfViews) { if([touch view]==vw) { vw.center=touchLocation1; //statement to move the control } } }
I have craeted a UIScrollView using code and i have created subviews which i am creating dynamically from the DB that are added to the array of views and to the UIScrollviews.I am using touchesBegan and touchesMoved methods.The subview which i am selecting is not recognized,but the control comes into touchesBegan and touches moved method.I have posted the code below.Please anybody help me to overcome from this issue.
I have created the scrollview through code and i have subviews in an array named "arrayofviews".these subviews are the same views which are in the array.I am able to move these subviews which are from the DB on a normal view,but when i added these views to the scrollview its not working.
I have tried so many solutions which are in the net,but i couldn't get a proper solution.
.m file
- (void)viewDidAppear:(BOOL)animated { scrollview=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 374)]; scrollview.backgroundColor=[UIColor clearColor]; [scrollview setScrollEnabled:YES]; [scrollview setContentSize:CGSizeMake(300, 600)]; scrollview.showsVerticalScrollIndicator = YES; scrollview.delaysContentTouches=NO; . . . . //here i am retrieving the controls from the DB and adding into the "arrayofviews" array which is an NSMutableArray //I have added subviews in this part to the scroll like [scrollview addSubview:vw1]; [scrollview addSubview:vw2]; . . . scrollview.userInteractionEnabled=NO; scrollview.scrollEnabled=FALSE; [self.view addSubview:scrollview]; [self.view bringSubviewToFront:scrollview]; } -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { scrollview.userInteractionEnabled=YES; [self.nextResponder touchesBegan:touches withEvent:event]; UITouch *touch = [[event allTouches] anyObject]; CGPoint touchLocation; touchLocation.x=scrollview.contentOffset.x; touchLocation.y=scrollview.contentOffset.y; for(UIView *vw in arrayOfViews) { vw.userInteractionEnabled=YES; if([touch view]==vw) { vw.center=touchLocation; } } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event //method to intiate the touch events { [self.nextResponder touchesMoved:touches withEvent:event]; UITouch *touch = [[event touchesForView:scrollview] anyObject]; CGPoint touchLocation1; touchLocation1.x=scrollview.contentOffset.x; touchLocation1.y=scrollview.contentOffset.y; for(UIView *vw in arrayOfViews) { if([touch view]==vw) { vw.center=touchLocation1; //statement to move the control } } }
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更改该行
scrollview.userInteractionEnabled = NO;
到
原因
userInteractionEnabled 告诉设备,是否接受触摸事件。当您禁用滚动视图上的触摸时,它如何接收触摸事件......
干杯!
change the line
scrollview.userInteractionEnabled=NO;
to
reason
userInteractionEnabled tells the device, whether to accept touch events. As you disabled the touch on scrollView then how it could recived touches events...
cheers!!!