我的 inputAccessoryView
的外观遇到了奇怪的错误。在转换过程中,它看起来像这样:
转换后,它看起来应该是这样:
我像这样重写该属性:
override var inputAccessoryView: UIView! {
get {
if composeView == nil {
composeView = CommentComposeView(frame: CGRectMake(0, 0, 0, MinimumToolbarHeight - 0.5))
self.setupSignals()
}
return composeView
}
}
我想知道是否有人可以指出我正在做的事情中的任何明显缺陷,或者提供更多关于如何确保我的 View 在转换之前、期间和之后显示应有的信息。
谢谢!
编辑
这是我的CommentComposeView
:
import UIKit
class CommentComposeView: UIToolbar {
var textView: SAMTextView!
var sendButton: UIButton!
private var didSetConstraints: Bool = false
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
self.initialize()
}
override init(frame: CGRect) {
super.init(frame: frame)
self.initialize()
}
private func initialize() {
textView = SAMTextView(frame: CGRectZero)
sendButton = UIButton.buttonWithType(.System) as UIButton
self.barStyle = .Black
self.translucent = true
textView.backgroundColor = UIColor.presentOffWhite()
textView.font = UIFont.presentLightMedium()
textView.layer.borderWidth = 0.5
textView.layer.cornerRadius = 5
textView.placeholder = "Comment"
textView.scrollsToTop = false
textView.textContainerInset = UIEdgeInsetsMake(4, 3, 3, 3)
textView.keyboardAppearance = .Dark
textView.keyboardType = .Twitter
self.addSubview(textView)
sendButton = UIButton.buttonWithType(.System) as UIButton
sendButton.enabled = false
sendButton.titleLabel!.font = UIFont.presentBoldLarge()
sendButton.setTitle("Send", forState: .Normal)
sendButton.setTitleColor(UIColor.whiteColor(), forState: .Normal)
sendButton.setTitleColor(UIColor.presentCyan(), forState: .Highlighted)
sendButton.setTitleColor(UIColor.presentLightGray(), forState: .Disabled)
sendButton.contentEdgeInsets = UIEdgeInsetsMake(6, 6, 6, 6)
self.addSubview(sendButton)
RAC(self.sendButton, "enabled") <~ self.textView.rac_textSignal()
.map { text in
return (text as NSString).length > 0
}
textView.setTranslatesAutoresizingMaskIntoConstraints(false)
sendButton.setTranslatesAutoresizingMaskIntoConstraints(false)
}
override func updateConstraints() {
super.updateConstraints()
if !didSetConstraints {
// TODO: Replace raw constraints with a friendlier looking DSL
self.addConstraint(
NSLayoutConstraint(item: textView, attribute: .Left, relatedBy: .Equal, toItem: self, attribute: .Left, multiplier: 1, constant: 8)
)
self.addConstraint(
NSLayoutConstraint(item: textView, attribute: .Top, relatedBy: .Equal, toItem: self, attribute: .Top, multiplier: 1, constant: 7.5)
)
self.addConstraint(
NSLayoutConstraint(item: textView, attribute: .Right, relatedBy: .Equal, toItem: sendButton, attribute: .Left, multiplier: 1, constant: -2)
)
self.addConstraint(
NSLayoutConstraint(item: textView, attribute: .Bottom, relatedBy: .Equal, toItem: self, attribute: .Bottom, multiplier: 1, constant: -8)
)
self.addConstraint(
NSLayoutConstraint(item: sendButton, attribute: .Right, relatedBy: .Equal, toItem: self, attribute: .Right, multiplier: 1, constant: 0)
)
self.addConstraint(
NSLayoutConstraint(item: sendButton, attribute: .Bottom, relatedBy: .Equal, toItem: self, attribute: .Bottom, multiplier: 1, constant: -4.5)
)
}
}
}
最佳答案
这是 iOS8 的 inputAccessoryView 自动布局问题。问题是 UIToolbar 类 _UIToolbarBackground
的 subview 在初始布局期间未正确定位。尝试做接下来的事情:
- 使
CommentComposeView
子类化UIView
,而不是UIToolbar
,添加UIToolbar
实例作为 subview 。 - 在
CommentComposeView
中使用自动布局蒙版(而非实际约束) - 在
CommentComposeView
中覆盖-layoutSubviews
,如下所示:
- (void)layoutSubviews
{
[super layoutSubviews];
contentToolbar.frame = self.bounds;
sendButton.frame = CGRectMake(0.f, 0.f, 44.f, self.bounds.size.height);
textView.frame = CGRectMake(44.f, 0.f, self.bounds.size.width - 44.f, self.bounds.size.height);
}
关于ios - Swift inputAccessoryView 覆盖错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25188392/