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我知道这是一个难以调试的问题。我会尽力解释,你可以从评论部分提问。用swift消息气泡限制
我想在我的应用程序中使用消息气泡。我为约束编写了一些代码,但效果不佳。
我怎么可以把蓝色气泡的左边缘到红线?
这里是我的代码:
当的tableview细胞加载此方法运行:
private func setup() {
bubbleImageView = UIImageView(image: bubbleImage.incoming, highlightedImage: bubbleImage.incomingHighlighed)
bubbleImageView.userInteractionEnabled = true
messageLabel = UILabel(frame: CGRectZero)
messageLabel.font = UIFont.systemFontOfSize(15)
messageLabel.numberOfLines = 0
messageLabel.userInteractionEnabled = true
selectionStyle = .None
contentView.addSubview(bubbleImageView)
bubbleImageView.addSubview(messageLabel)
messageLabel.translatesAutoresizingMaskIntoConstraints = false
bubbleImageView.translatesAutoresizingMaskIntoConstraints = false
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Left, relatedBy: .Equal, toItem: contentView, attribute: .Left, multiplier: 1, constant: 10))
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Top, relatedBy: .Equal, toItem: contentView, attribute: .Top, multiplier: 1, constant: 4.5))
bubbleImageView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Width, relatedBy: .Equal, toItem: messageLabel, attribute: .Width, multiplier: 1, constant: 30))
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: .Bottom, relatedBy: .Equal, toItem: contentView, attribute: .Bottom, multiplier: 1, constant: -4.5))
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterX, relatedBy: .Equal, toItem: bubbleImageView, attribute: .CenterX, multiplier: 1, constant: -2))
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterY, relatedBy: .Equal, toItem: bubbleImageView, attribute: .CenterY, multiplier: 1, constant: -0.5))
messageLabel.preferredMaxLayoutWidth = 218
bubbleImageView.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Height, relatedBy: .Equal, toItem: bubbleImageView, attribute: .Height, multiplier: 1, constant: -15))
}
正如你看到的,我创建文本泡沫背景和标签。
而第二种方法:
func setCell(message:Message) {
messageLabel.text="testtesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttest"
var layoutAttribute: NSLayoutAttribute
var layoutConstant: CGFloat
if message.incoming {
bubbleImageView.image=bgImage.incoming
messageLabel.textColor = UIColor.blackColor()
layoutAttribute = .Left
layoutConstant = 10
}else{
if message.isSent == 1 {
bubbleImageView.image = bgImage.outgoing
}
if message.isSent == 0 {
bubbleImageView.image = bgImage.notYetSent
}
messageLabel.textColor = UIColor.whiteColor()
layoutAttribute = .Right
layoutConstant = -10
}
contentView.addConstraint(NSLayoutConstraint(item: bubbleImageView, attribute: layoutAttribute, relatedBy: .Equal, toItem: contentView, attribute: layoutAttribute, multiplier: 1, constant: layoutConstant))
}
什么是我的代码的问题?它对传入消息(灰色气泡)工作良好,对于传出消息不起作用(蓝色泡泡)
I M面临的一个问题有同样的事情 –