当我点击uitableviewcell中的uiimageview时,应用程序崩溃
我是iOS开发新手,使用xcode 8.2.1 & swift 3.我在视图控制器中使用uitableview,在uitableviewcell中使用uiimageview当我点击它时,应用程序崩溃并且当我采取按钮并执行按钮操作时,会发生同样的问题。当我点击uitableviewcell中的uiimageview时,应用程序崩溃
错误是:
sampleToRunBuild [3752:1620857] - [sampleToRunBuild.TapViewController TappedOnImage:]:无法识别的选择发送到实例0x141e07bc0 2017年4月13日18:18:00.531126 sampleToRunBuild [3752 :1620857] * 终止应用程序由于未捕获的异常 'NSInvalidArgumentException' 的,理由是: ' - [sampleToRunBuild.TapViewController TappedOnImage:]:无法识别 选择发送到实例0x141e07bc0' *第一掷通话堆栈:(0x18343d1b8 0x181e7455c 0x183444268 0x183441270 0x18333a80c 0x1898b3f80 0x1898b7688 0x18947e73c 0x18931d0f0 0x1898a7680 0x1898a71e0 0x1898a649c 0x18931b30c 0x1892ebda0 0x189ad575c 0x189acf130 0x1833eab5c 0x1833ea4a4 0x1833e80a4 0x1833162b8 0x184dca198 0x1893567fc 0x189351534 0x100065f30 0x1822f95b8)的libC++ abi.dylib:与未捕获 异常类型的终止NSException
我的代码是:
import UIKit
class TapViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate {
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "mycell")
let img: UIImageView = cell?.viewWithTag(1) as! UIImageView
let img2: UIImageView = cell?.viewWithTag(2) as! UIImageView
img.tag = indexPath.row
img2.tag = indexPath.row
img.isUserInteractionEnabled = true
img2.isUserInteractionEnabled = true
let tapped:UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: Selector(("TappedOnImage:")))
tapped.numberOfTapsRequired = 1
tapped.delegate = self
img.addGestureRecognizer(tapped)
let tapped1:UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: Selector(("TappedOnImage:")))
tapped1.numberOfTapsRequired = 1
tapped1.delegate = self
img.addGestureRecognizer(tapped1)
return cell!
}
func TappedOnImage(sender:UITapGestureRecognizer){
print("tap on imageview")
}
}
在此先感谢...
下面的代码添加UITapGestureRecognizer
像
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageTapped(tapGestureRecognizer:)))
imageView.isUserInteractionEnabled = true
imageView.addGestureRecognizer(tapGestureRecognizer)
func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
let tappedImage = tapGestureRecognizer.view as! UIImageView
// Your action
}
你需要使用
#selector(TapViewController.imageTapped(sender:))
如果您使用SWIFT 3,不要使用Selector()
了,请改为使用#selector
语法。
例如
let tapped1:UITapGestureRecognizer =
UITapGestureRecognizer(target: self, action: #selector(TappedOnImage))
之所以你的代码没有工作是你忘了参数标签sender
添加到选择的字符串。这是使用旧语法的缺点之一 - 它不会在编译时告诉你错误。使用新的语法,如果您错误地编写了选择器,将会出现编译器错误,而且您甚至不需要关心参数标签,只需要名称即可。
谢谢你这是我的工作 –
欢迎你回复我的回答@KunalMalve –