在tableview中插入行并设置textfield first responder

我有一个nstableview，包含3列和一个自定义单元格视图。使用此代码我添加一个新行到我的表：在tableview中插入行并设置textfield first responder

tableView.beginUpdates() 
tableView.insertRows(at: IndexSet(integer: tableView.numberOfRows), withAnimation: .effectFade) 
tableView.endUpdates() 

let view = tableView.view(atColumn: 1, row: tableView.numberOfRows-1, makeIfNecessary: false) as! CustomCell 
view.txtName.becomeFirstResponder()

这个作品近乎完美，但问题是：

行将插入的文本框成为第一个响应者，我可以写一个值，但如果我改变焦点到这一行的另一个文本框我的应用程序崩溃：

2017-06-14 09:20:13.282076+0200 Programm[2206:105520] [General] An uncaught exception was raised 
2017-06-14 09:20:13.282112+0200 Programm[2206:105520] [General] Row -1 out of row range [0-0] for rowViewAtRow:createIfNeeded: 
2017-06-14 09:20:13.289941+0200 Programm[2206:105520] [General] (
    0 CoreFoundation      0x00007fffb49ac57b __exceptionPreprocess + 171 
    1 libobjc.A.dylib      0x00007fffc9bf01da objc_exception_throw + 48 
    2 AppKit        0x00007fffb25329fb -[NSTableRowData rowViewAtRow:createIfNeeded:] + 690 
    3 AppKit        0x00007fffb25fdb11 -[NSTableView viewAtColumn:row:makeIfNecessary:] + 28 
    4 Programm       0x000000010002019a _TFC8Programm18DokumentController7controlfTCSo9NSControl20textShouldEndEditingCSo6NSText_Sb + 394 
    5 Programm       0x00000001000227cf _TToFC8Programm18DokumentController7controlfTCSo9NSControl20textShouldEndEditingCSo6NSText_Sb + 79 
    6 AppKit        0x00007fffb25e7ba7 -[NSTextField textShouldEndEditing:] + 161 
    7 AppKit        0x00007fffb25d5f1f -[NSTextView(NSSharing) resignFirstResponder] + 483 
    8 AppKit        0x00007fffb24d7923 -[NSWindow _realMakeFirstResponder:] + 235 
    9 AppKit        0x00007fffb24d77e4 -[NSWindow makeFirstResponder:] + 123 
    10 AppKit        0x00007fffb2773fef -[NSTextView(NSPrivate) _giveUpFirstResponder:] + 261 
    11 AppKit        0x00007fffb25d42b7 -[NSTextView doCommandBySelector:] + 192 
    12 AppKit        0x00007fffb25d41d1 -[NSTextInputContext(NSInputContext_WithCompletion) doCommandBySelector:completionHandler:] + 118 
    13 AppKit        0x00007fffb25b1e00 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] + 2218 
    14 AppKit        0x00007fffb2df37b1 __84-[NSTextInputContext _handleEvent:options:allowingSyntheticEvent:completionHandler:]_block_invoke.1096 + 355 
    15 AppKit        0x00007fffb2df35e5 __84-[NSTextInputContext _handleEvent:options:allowingSyntheticEvent:completionHandler:]_block_invoke_3 + 80 
    16 AppKit        0x00007fffb25b9f59 -[NSTextInputContext tryHandleEvent_HasMarkedText_withDispatchCondition:dispatchWork:continuation:] + 93 
    17 AppKit        0x00007fffb2df3560 __84-[NSTextInputContext _handleEvent:options:allowingSyntheticEvent:completionHandler:]_block_invoke.1086 + 262 
    18 HIToolbox       0x00007fffb3eb689f __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_5 + 70 
    19 HIToolbox       0x00007fffb3eb56e2 ___ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec_block_invoke + 108 
    20 AppKit        0x00007fffb2dec4f8 __55-[NSTextInputContext handleTSMEvent:completionHandler:]_block_invoke.314 + 2874 
    21 AppKit        0x00007fffb25b3835 __55-[NSTextInputContext handleTSMEvent:completionHandler:]_block_invoke_2 + 80 
    22 AppKit        0x00007fffb25b37b4 -[NSTextInputContext tryHandleTSMEvent_HasMarkedText_withDispatchCondition:dispatchWork:continuation:] + 93 
    23 AppKit        0x00007fffb25b319f -[NSTextInputContext handleTSMEvent:completionHandler:] + 2221 
    24 AppKit        0x00007fffb25b2883 _NSTSMEventHandler + 321 
    25 HIToolbox       0x00007fffb3e5bd85 _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1708 
    26 HIToolbox       0x00007fffb3e5aff6 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 428 
    27 HIToolbox       0x00007fffb3e5ae3f SendEventToEventTargetWithOptions + 43 
    28 HIToolbox       0x00007fffb3eb26d6 SendTSMEvent_WithCompletionHandler + 408 
    29 HIToolbox       0x00007fffb3eb2bb1 __SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler_block_invoke + 400 
    30 HIToolbox       0x00007fffb3eb2a12 __SendFilterTextEvent_WithCompletionHandler_block_invoke + 215 
    31 HIToolbox       0x00007fffb3eb2727 SendTSMEvent_WithCompletionHandler + 489 
    32 HIToolbox       0x00007fffb3eb2511 SendFilterTextEvent_WithCompletionHandler + 236 
    33 HIToolbox       0x00007fffb3eb21d6 SendUnicodeTextAEToUnicodeDoc_WithCompletionHandler + 284 
    34 HIToolbox       0x00007fffb3eb1f8c __utDeliverTSMEvent_WithCompletionHandler_block_invoke_2 + 296 
    35 HIToolbox       0x00007fffb3eb1e32 __utDeliverTSMEvent_WithCompletionHandler_block_invoke + 439 
    36 HIToolbox       0x00007fffb3eb1bf9 TSMKeyEvent_WithCompletionHandler + 632 
    37 HIToolbox       0x00007fffb3eb1948 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_4 + 251 
    38 HIToolbox       0x00007fffb3eb1775 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_3 + 281 
    39 HIToolbox       0x00007fffb3eb148b __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke_2 + 308 
    40 HIToolbox       0x00007fffb3eb11c2 __TSMProcessRawKeyEventWithOptionsAndCompletionHandler_block_invoke + 300 
    41 HIToolbox       0x00007fffb3eb073a TSMProcessRawKeyEventWithOptionsAndCompletionHandler + 3604 
    42 AppKit        0x00007fffb2df33d1 __84-[NSTextInputContext _handleEvent:options:allowingSyntheticEvent:completionHandler:]_block_invoke.1077 + 116 
    43 AppKit        0x00007fffb2df2689 __204-[NSTextInputContext tryTSMProcessRawKeyEvent_orSubstitution:dispatchCondition:setupForDispatch:furtherCondition:doubleSpaceSubstitutionCondition:doubleSpaceSubstitutionWork:dispatchTSMWork:continuation:]_block_invoke.1003 + 121 
    44 AppKit        0x00007fffb2df24f3 -[NSTextInputContext tryTSMProcessRawKeyEvent_orSubstitution:dispatchCondition:setupForDispatch:furtherCondition:doubleSpaceSubstitutionCondition:doubleSpaceSubstitutionWork:dispatchTSMWork:continuation:] + 285 
    45 AppKit        0x00007fffb2df2e1b -[NSTextInputContext _handleEvent:options:allowingSyntheticEvent:completionHandler:] + 1515 
    46 AppKit        0x00007fffb2df2362 -[NSTextInputContext _handleEvent:allowingSyntheticEvent:] + 114 
    47 AppKit        0x00007fffb25b128b -[NSView interpretKeyEvents:] + 232 
    48 AppKit        0x00007fffb25b10a1 -[NSTextView keyDown:] + 704 
    49 AppKit        0x00007fffb2d132cc -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 4086 
    50 AppKit        0x00007fffb2d11f0a -[NSWindow(NSEventRouting) sendEvent:] + 541 
    51 AppKit        0x00007fffb2b974a8 -[NSApplication(NSEvent) sendEvent:] + 4768 
    52 AppKit        0x00007fffb2411427 -[NSApplication run] + 1002 
    53 AppKit        0x00007fffb23dbe0e NSApplicationMain + 1237 
    54 Programm       0x000000010001388d main + 13 
    55 libdyld.dylib      0x00007fffca4d1235 start + 1 
    56 ???         0x0000000000000003 0x0 + 3 
)

来源

2017-06-14 Ghost108

您尝试更改数据源并重新加载tableview。 –

sry？我不明白。你的答案应该是问题还是解决方案？ – Ghost108

这是第一次发生 - 表中最初没有行吗？看起来你的错误是你正在尝试访问第-1行。应该'tableView.numberOfRows-1'实际上是'tableView.numberOfRows'？ – Russell

问题解决！ EndEditing中的我预计选定的一行。但如果我添加一行，这一行没有被选中。我添加以下行到我的addRow函数，现在它工作：

tableView.selectRowIndexes(IndexSet(integer: tableView.numberOfRows-1), byExtendingSelection: false)

来源

2017-06-14 08:28:07 Ghost108

在tableview中插入行并设置textfield first responder

回答

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