在ios应用程序中创建浮动文本框

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我想在单击单元格时添加一个选项，它将在键盘上方显示浮动文本框并使背景变模糊。在ios应用程序中创建浮动文本框

任何人都知道这一点，以及如何实施它？与添加一些属性类 Floating Text Box

2015-04-02 Tamir' o

论索引路径没有选择行你会想使用UITextField创建一个新视图，然后呈现视图并使文本字段成为第一响应者，您将希望根据触发键盘时发送的NSNotification信息更新文本框的框架。为了模糊背景，您可以使用iOS 8（如果您使用它）？模糊背景图层，可以将UITextField添加到它的活力层，以确保前景色鲜明。 - 您的屏幕截图看起来非常像黑色层，大约80％的不透明度 - 您可以直接在UIView上做到这一点。 – 2015-04-02 13:59:31

开始：您可以通过下面的链接查看图像

var textField = UITextField() 
var composeBarView = UIView() 
var blurView = UIView() 
let barHeight:CGFloat = 44

下创建的模糊观点，文本框和容器视图。在viewWillAppear中做到这一点：

blurView = UIView(frame: self.view.frame) 
blurView.alpha = 0.5 
blurView.backgroundColor = UIColor.blackColor(); 
self.view.addSubview(blurView); 
blurView.hidden = true;// Note its hidden! 

textField = UITextField(frame: CGRectMake(0, 0, UIScreen.mainScreen().bounds.width, barHeight)) 
composeBarView = UIView(frame: CGRectMake(0, UIScreen.mainScreen().bounds.height-64, UIScreen.mainScreen().bounds.width, barHeight)); 
composeBarView.addSubview(textField); 

self.view.addSubView(composeBarView);

那么你应该为UIKeyboardWillShowNotification和UIKeyboardWillHideNotification注册通知：

NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillToggle:", name: UIKeyboardWillShowNotification, object: nil); 
NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillToggle:", name: UIKeyboardWillHideNotification, object: nil);

落实keyboardWillToggle方法：

func keyboardWillToggle(notfication: NSNotification){ 
    if let userInfo = notfication.userInfo { 

     let endFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as NSValue).CGRectValue() 
     let startFrame = (userInfo[UIKeyboardFrameBeginUserInfoKey] as NSValue).CGRectValue(); 

     let duration:NSTimeInterval = (userInfo[UIKeyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue ?? 0 

     let animationCurveRawNSN = userInfo[UIKeyboardAnimationCurveUserInfoKey] as? NSNumber 
     let animationCurveRaw = animationCurveRawNSN?.unsignedLongValue ?? UIViewAnimationOptions.CurveEaseInOut.rawValue 
     let animationCurve:UIViewAnimationOptions = UIViewAnimationOptions(rawValue: animationCurveRaw) 


     var signCorrection:CGFloat = 1; 
     if (startFrame.origin.y < 0 || startFrame.origin.x < 0 || endFrame.origin.y < 0 || endFrame.origin.x < 0){ 
      signCorrection = -1; 
     } 

     let widthChange = (endFrame.origin.x - startFrame.origin.x) * signCorrection; 
     let heightChange = (endFrame.origin.y - startFrame.origin.y) * signCorrection; 

     let sizeChange = UIInterfaceOrientationIsLandscape(self.interfaceOrientation) ? widthChange : heightChange; 

     var frame = composeBarView.frame 

     frame.origin.y += (sizeChange - barHeight ?? 0.0) 
     composeBarView.frame = frame; 
     UIView.animateWithDuration(duration, 
      delay: NSTimeInterval(0), 
      options: animationCurve, 
      animations: { self.view.layoutIfNeeded() }, 
      completion: nil) 
    } 
}

请注意，我们必须考虑酒吧高度，当你显示键盘。您需要将视图调整回原来的位置。然后，当didSelectRowAtIndexPath方法是叫你拨打：

textFiled.becomeFirstResponder() 
blureView.hidden = false;

来源

2015-04-02 14:13:24 Jbryson

没有测试，但是我认为你可以用一个模式赛格瑞办呢？

对于为例，当成为编辑，你可以Segue公司到会出现实际泰伯维上述新CellViewcontroller和插入此参数的文本字段：

func prensentationController(controller: UIPresentationController, viewControllerdaptivePresentationStyle style: UIModalPresentationtyle) -> UIViewController 
    let navcon = UINavigationController(UIPresentationViewController: controller.presentedViewController) 
    let visualEffectView = UIVisualEffectView(effect:UIBlurEffect(style: .ExtraLight)) 
    visualEffectView.frame = navcon.view.bounds 
    navcon.view.insertSubview(visualEffectView, atIndex: 0) 
    return navcon 
}

来源

2015-04-02 14:28:53

在ios应用程序中创建浮动文本框

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