uitouch

问题 3D touch seems really cool and I wanted to see how it would work in a musical context. I was reading a bit about 3D touch and it seems like the force property almost always reads as 0 when a touch begins ( touchesBegan method). How do I get a usable force when a touch begins because even if I'm pressing with maximum "force" I'm still getting that initial 0? I was thinking about just approximating a value within a time frame but that would involve me moving the touch. I just want a usable

问题 My button is as follows Created label1 Created label2 Created customView ( UIView ) Added label1 and label2 on custom view Created myCustomButton( UIButton ) Added customView on myCustomButton I have already done userInteractionEnable for custom_View, label1 and label2. Then added [myCustomButton addTarget:self action:@selector(OnButtonClick:) forControlEvents:UIControlEventTouchUpInside]; And -(void)OnButtonClick:(UIButton *)sender { } But above function is never called even when I touch the

问题 My button is as follows Created label1 Created label2 Created customView ( UIView ) Added label1 and label2 on custom view Created myCustomButton( UIButton ) Added customView on myCustomButton I have already done userInteractionEnable for custom_View, label1 and label2. Then added [myCustomButton addTarget:self action:@selector(OnButtonClick:) forControlEvents:UIControlEventTouchUpInside]; And -(void)OnButtonClick:(UIButton *)sender { } But above function is never called even when I touch the

问题 tl;dr- How can I programmatically perform a native touch in specific point on the screen? Within the web view there is HTML that contains an Iframe, so the web view code and elements are not accessible and sanding massages to JS is not possible either. There is a button in the web view on specific coordinates. How can I press it programmatically? 回答1: To simulate the touch you will need to write a javascript function in your web page that can click the button on your behalf. Let's assume the

问题 i am trying to change the shape of UIBezierPath that i have created like in this tutorial: [https://www.appcoda.com/bezier-paths-introduction/] thats my code: class Geometry: UIView { //var path: UIBezierPath! var path = UIBezierPath() override func draw(_ rect: CGRect) { createLine(x: 100, y: 100) } override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = UIColor.white } required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) } func transformShape(x

问题 i am trying to change the shape of UIBezierPath that i have created like in this tutorial: [https://www.appcoda.com/bezier-paths-introduction/] thats my code: class Geometry: UIView { //var path: UIBezierPath! var path = UIBezierPath() override func draw(_ rect: CGRect) { createLine(x: 100, y: 100) } override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = UIColor.white } required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) } func transformShape(x

问题 i am trying to change the shape of UIBezierPath that i have created like in this tutorial: [https://www.appcoda.com/bezier-paths-introduction/] thats my code: class Geometry: UIView { //var path: UIBezierPath! var path = UIBezierPath() override func draw(_ rect: CGRect) { createLine(x: 100, y: 100) } override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = UIColor.white } required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) } func transformShape(x

问题 I am working with multitouch while writing, So basically what I am doing is, I am writing with hand support, because typically, its how user writes, I followed this link How to ignore certain UITouch Points in multitouch sequence Everything is working fine with single touch, but their is some problem when I write with my hand touching the screen i.e multiple UItouches Below is my code In touches began, I go through all touches and I find the touch with highest y position, below is my code

问题 I am modifying the "MoveMe" example from the apple web site. When my controller gets the "touchesMoved" message it moves the object being moved to the centre of the touch, because (pseudocode) object.center = touch.center. How can I store the offset of the initial touch so that if I start the touch/drag to the side my finger will stay on that spot while I drag it around? 回答1: You can store target_view.frame in an instance variable when touchBegan message arrives. 回答2: Can't you store that in

问题 I am modifying the "MoveMe" example from the apple web site. When my controller gets the "touchesMoved" message it moves the object being moved to the centre of the touch, because (pseudocode) object.center = touch.center. How can I store the offset of the initial touch so that if I start the touch/drag to the side my finger will stay on that spot while I drag it around? 回答1: You can store target_view.frame in an instance variable when touchBegan message arrives. 回答2: Can't you store that in