我在 UIViewController 中有一个 UITableView。在我的 tableView(_:cellForRowAt:
中,我配置了一个带有自定义 detailDisclosure 按钮的单元格,如下所示:
cell.accessoryType = .detailDisclosureButton
我还实现了 tableView(_:accessoryButtonTappedForRowWith:)
。使用“工厂”detailDisclosureButton
效果很好。我不喜欢这个图标,所以我试图改变它。
设置cell.accessoryType后,我添加了如下代码:
// declare the button
let customDetailDisclosureButton = UIButton.init(type: .detailDisclosure)
// set the image for .normal and .selected
customDetailDisclosureButton.setImage(UIImage(named: "info")?.withRenderingMode(.alwaysTemplate), for: .normal)
customDetailDisclosureButton.setImage(UIImage(named: "info")?.withRenderingMode(.alwaysTemplate), for: .selected)
// add a target action
customDetailDisclosureButton.addTarget(self, action: #selector(tableView(_:accessoryButtonTappedForRowWith:)), for: .touchUpInside)
cell.accessoryView = customDetailDisclosureButton
当我加载 tableView
时,它显示正常。当我点击 detailDisclosureButton 时,它崩溃了。我做错了什么?
这是控制台输出:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UITouchesEvent length]: unrecognized selector sent to instance 0x6180000f1000'
*** First throw call stack:
(
0 CoreFoundation 0x0000000102e9ab0b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x00000001024ea141 objc_exception_throw + 48
2 CoreFoundation 0x0000000102f0a134 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x0000000102e21840 ___forwarding___ + 1024
4 CoreFoundation 0x0000000102e213b8 _CF_forwarding_prep_0 + 120
5 libswiftFoundation.dylib 0x000000010425c1a0 _TTSf4g_d___TFV10Foundation9IndexPathCfT11nsIndexPathCSo11NSIndexPath_S0_ + 32
6 libswiftFoundation.dylib 0x0000000104210a57 _TZFV10Foundation9IndexPath36_unconditionallyBridgeFromObjectiveCfGSqCSo11NSIndexPath_S0_ + 23
7 MyApp 0x0000000101e43ae7 _TToFC10MyApp22PlaylistViewController9tableViewfTCSo11UITableView31accessoryButtonTappedForRowWithV10Foundation9IndexPath_T_ + 71
8 UIKit 0x0000000104f17d22 -[UIApplication sendAction:to:from:forEvent:] + 83
9 UIKit 0x000000010509c25c -[UIControl sendAction:to:forEvent:] + 67
10 UIKit 0x000000010509c577 -[UIControl _sendActionsForEvents:withEvent:] + 450
11 UIKit 0x000000010509b4b2 -[UIControl touchesEnded:withEvent:] + 618
12 UIKit 0x0000000105440ea9 _UIGestureEnvironmentSortAndSendDelayedTouches + 5553
13 UIKit 0x000000010543bec0 _UIGestureEnvironmentUpdate + 1409
14 UIKit 0x000000010543b8f3 -[UIGestureEnvironment _deliverEvent:toGestureRecognizers:usingBlock:] + 484
15 UIKit 0x000000010543aaba -[UIGestureEnvironment _updateGesturesForEvent:window:] + 274
16 UIKit 0x0000000104f86b9a -[UIWindow sendEvent:] + 4092
17 UIKit 0x0000000104f337b0 -[UIApplication sendEvent:] + 352
18 UIKit 0x0000000105716adc __dispatchPreprocessedEventFromEventQueue + 2926
19 UIKit 0x000000010570ea3a __handleEventQueue + 1122
20 CoreFoundation 0x0000000102e40c01 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
21 CoreFoundation 0x0000000102e260cf __CFRunLoopDoSources0 + 527
22 CoreFoundation 0x0000000102e255ff __CFRunLoopRun + 911
23 CoreFoundation 0x0000000102e25016 CFRunLoopRunSpecific + 406
24 GraphicsServices 0x0000000108d83a24 GSEventRunModal + 62
25 UIKit 0x0000000104f160d4 UIApplicationMain + 159
26 MyApp 0x0000000101e4df47 main + 55
27 libdyld.dylib 0x0000000104dfa65d start + 1
28 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of
最佳答案
替换
// add a target action
customDetailDisclosureButton.addTarget(self, action: #selector(tableView(_:accessoryButtonTappedForRowWith:)), for: .touchUpInside)
与
customDetailDisclosureButton.addTarget(self, action: #selector(ViewController.accessoryButtonTapped(sender:)), for: .touchUpInside)
然后
func accessoryButtonTapped(sender : UIButton){
let buttonPosition: CGPoint = (sender as! UIButton).convert(.zero, to: tableView)
let indexPath = tableView.indexPathForRow(at: buttonPosition)
// do what you gotta do with the indexPath
}
关于ios - 为 UITableView 自定义详细信息披露按钮配置操作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44134699/