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Re: The Case of the Dancing Keyboard
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Re: The Case of the Dancing Keyboard


  • Subject: Re: The Case of the Dancing Keyboard
  • From: "Gerriet M. Denkmann" <email@hidden>
  • Date: Tue, 28 Apr 2015 09:46:37 +0700

> On 27 Apr 2015, at 19:04, Alex Zavatone <email@hidden> wrote:
>
> By any chance is the searchBar wired through an IBOutlet?
>
> If so, do you have two connections to it?

No, it is not connected to any IBOutlets.

The reason is simply: programmer error.

When I click in the searchBar the following happens:

	42:38.530  -[MasterViewController searchBarTextDidBeginEditing:] searchBar 0x7a79a810 isFirstResponder YES
	42:38.530  -[MasterViewController presentSearchController:]      searchBar 0x7a79a810 isFirstResponder YES
	42:38.530  -[MasterViewController willPresentSearchController:]  searchBar 0x7a79a810 isFirstResponder YES
	42:38.536  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
	42:38.536  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
	42:38.537  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
				-[ResultsTableController scrollViewDidScroll:] 	rows: (none) - (none).
				-[ResultsTableController scrollViewDidScroll:] 	rows: (none) - (none).
				-[ResultsTableController scrollViewDidScroll:] 	 rows: (none) - (none).
	42:38.858  -[MasterViewController didPresentSearchController:]   searchBar 0x7a79a810 isFirstResponder YES

I had in scrollViewDidScroll:
	[searchBar resignFirstResponder ];
because I wanted the keyboard not to obscure the list when the user scrolls the tableView.

I did not anticipate that scrollViewDidScroll: is also called when nobody actually scrolls the tableView (which is quite empty at this point).

Once I fixed this, everything went back to normal.

Sorry for the noise.

Gerriet.



> On Apr 27, 2015, at 2:04 AM, Gerriet M. Denkmann wrote:
>
>>
>>> On 23 Apr 2015, at 12:04, Gerriet M. Denkmann <email@hidden> wrote:
>>>
>>>
>>> An UITableViewController with an UISearchController in iOS 8.3
>>>
>>> When I click in the SearchBar the following dance happens:
>>> Keyboard comes;
>>> Keyboard goes away;
>>> Background becomes gray;
>>> Keyboard comes again and now stays.
>>>
>>> This is sort of difficult to see in the Simulator because it happens too fast.
>>> But clearly seen (and rather annoying) on iPhone 4s.
>>>
>>> Any ideas how this silly dance can be avoided?
>>>
>>> Gerriet.
>>
>> Further investigation shows:
>>
>> In my app with the dancing keyboard I see:
>>
>> 	Click in SearchBar → Keyboard appears and vanishes again
>> 	42:38.530  -[MasterViewController searchBarTextDidBeginEditing:] searchBar 0x7a79a810 isFirstResponder YES
>> 	42:38.530  -[MasterViewController presentSearchController:]      searchBar 0x7a79a810 isFirstResponder YES
>> 	42:38.530  -[MasterViewController willPresentSearchController:]  searchBar 0x7a79a810 isFirstResponder YES
>> 	42:38.536  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
>> 	42:38.536  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
>> 	42:38.537  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
>> *	42:38.539  -[MasterViewController searchBarShouldEndEditing:]    searchBar 0x7a79a810 isFirstResponder YES
>> *	42:38.542  -[MasterViewController searchBarTextDidEndEditing:]   searchBar 0x7a79a810 isFirstResponder NO
>> *	42:38.858  -[MasterViewController didPresentSearchController:]   searchBar 0x7a79a810 isFirstResponder NO
>>
>> 	Click again to make Keyboard appear:
>> 	43:15.282  -[MasterViewController searchBarTextDidBeginEditing:] searchBar 0x7a79a810 isFirstResponder YES
>>
>> The lines marked with “*” differ from those below.
>>
>> In another app (TableSearchwithUISearchController) I see:
>>
>> 	Click in SearchBar → Keyboard appears
>> 	47:02.041  -[APLMainTableViewController searchBarTextDidBeginEditing:] searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.041  -[APLMainTableViewController presentSearchController:]      searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.041  -[APLMainTableViewController willPresentSearchController:]  searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.046  -[APLMainTableViewController searchBarShouldEndEditing:]    searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.047  -[APLMainTableViewController searchBarShouldEndEditing:]    searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.047  -[APLMainTableViewController searchBarShouldEndEditing:]    searchBar 0x7d5ad7d0 isFirstResponder YES
>> 	47:02.368  -[APLMainTableViewController didPresentSearchController:]   searchBar 0x7d5ad7d0 isFirstResponder YES
>>
>> Somehow I seem to have messed up my searchBar: there is an additional searchBarShouldEndEditing + searchBarTextDidEndEditing (which seems to call resignFirstResponder, which removes the keyboard).
>>
>> I tried to follow all steps in my app same as TableSearchwithUISearchController.
>>
>> Any ideas?
>>
>> Gerriet.
>>
>>
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References: 
 >The Case of the Dancing Keyboard (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: The Case of the Dancing Keyboard (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: The Case of the Dancing Keyboard (From: Alex Zavatone <email@hidden>)

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