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這裏是我的代碼拖動周圍的UITextField UIView的（SWIFT）
import UIKit
class ForwardTextField: UITextField {
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func drawRect(rect: CGRect) {
// Drawing code
}
*/
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
super.touchesBegan(touches, withEvent: event)
self.nextResponder()!.touchesBegan(touches, withEvent: event)
NSLog("Textfield Touches Began")
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
super.touchesMoved(touches, withEvent: event)
self.nextResponder()!.touchesMoved(touches, withEvent: event)
NSLog("Textfield Touches Moved")
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
super.touchesEnded(touches, withEvent: event)
self.nextResponder()!.touchesEnded(touches, withEvent: event)
NSLog("Textfield Touches Ended")
}
override func touchesCancelled(
touches: Set<UITouch>?, withEvent event: UIEvent?) {
super.touchesCancelled(touches, withEvent: event)
self.nextResponder()!.touchesCancelled(touches, withEvent: event)
//NSLog(@"Textfield Touches Cancelled");
}
// placeholder position
override func textRectForBounds(bounds: CGRect) -> CGRect {
return CGRectInset(bounds, 10, 10)
}
// text position
override func editingRectForBounds(bounds: CGRect) -> CGRect {
return CGRectInset(bounds, 10, 10)
}
}
我繼承我的UITextField和我試圖拖動周圍的景色，但我不知道我做錯了。當第一次觸摸它不能拖動，但在第二次觸摸它跳到另一個位置，可以draggable.Can任何人都可以幫助我解決這個問題，它已經有一段時間了，現在仍然堅持這一點。我試圖做一些像snapchat textfield這是可拖動的。
var textField = ForwardTextField()
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
print("TOUCHES BEGAN\n ")
print("self.textfield == nil = \(self.view.subviews.contains(self.textField))\n")
self.isDrawing = false
if !self.view.subviews.contains(self.textField){
self.textFieldY = 80.0
self.textField = ForwardTextField(frame: CGRectMake(0.0, self.textFieldY, self.view.frame.size.width, 40.0))
self.textField.borderStyle = .None
self.textField.backgroundColor = UIColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.4)
//self.textField.alpha = 0.4;
self.textField.textColor = UIColor.whiteColor()
self.textField.returnKeyType = .Done
self.textField.delegate = self
//ADDED
//self.textField.userInteractionEnabled = true
self.textField.multipleTouchEnabled = false
self.textField.exclusiveTouch = false
self.textField.textAlignment = .Center
self.view.addSubview(self.textField)
print("Show Text BOx")
if self.textField.hidden == true {
self.textField.hidden = false
}
self.textField.becomeFirstResponder()
}else {
let touch: UITouch = touches.first!
//NSLog(@"touchesBegan");
let point: CGPoint = touch.locationInView(self.view)
if self.view.subviews.contains(self.textField) && CGRectContainsPoint(self.textField.frame, point) && !self.textField.hidden{
self.isMovingText = true
}
if self.isDrawing {
self.lastPoint = point
}
}
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
print("TOUCHES MOVED ")
print("ISMOVING TEXT = \(isMovingText)")
if self.isMovingText {
print("MOVESSSS")
let touch: UITouch = touches.first!
var point: CGPoint = touch.locationInView(self.view)
self.textFieldY = point.y
self.textField.frame = CGRectMake(0.0, point.y, self.textField.frame.size.width, self.textField.frame.size.height)
self.view.setNeedsDisplay()
}
if self.isDrawing {
//NSLog(@"touchmoved");
var touch: UITouch = touches.first!
var currentPoint: CGPoint = touch.locationInView(self.view)
self.image.drawAtPoint(CGPointMake(0.0, 0.0))
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), self.lastPoint.x, self.lastPoint.y)
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y)
CGContextSetLineCap(UIGraphicsGetCurrentContext(), .Round)
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brush)
CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), self.drawColor.CGColor)
CGContextSetBlendMode(UIGraphicsGetCurrentContext(),.Normal)
CGContextStrokePath(UIGraphicsGetCurrentContext())
self.image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
self.lastPoint = currentPoint
self.view.setNeedsDisplay()
}
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
if self.isMovingText == true {
var touch: UITouch = touches.first!
var point: CGPoint = touch.locationInView(self.view)
self.textFieldY = point.y
self.textField.frame = CGRectMake(0.0, point.y, self.textField.frame.size.width, self.textField.frame.size.height)
self.view.setNeedsDisplay()
self.isMovingText = false
}
if self.isDrawing {
//NSLog(@"touchended");
self.image.drawAtPoint(CGPointMake(0.0, 0.0))
CGContextSetLineCap(UIGraphicsGetCurrentContext(),.Round)
CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brush)
CGContextSetStrokeColorWithColor(UIGraphicsGetCurrentContext(), self.drawColor.CGColor)
CGContextMoveToPoint(UIGraphicsGetCurrentContext(), self.lastPoint.x, self.lastPoint.y)
CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), self.lastPoint.x, self.lastPoint.y)
CGContextStrokePath(UIGraphicsGetCurrentContext())
CGContextFlush(UIGraphicsGetCurrentContext())
self.image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
self.view.setNeedsDisplay()
}
}
在代碼中寫評論是'//不是羞愧' –
@DanielKrom你讓我笑了^^ – Coder1000