How to disable Japanese-mode input on a UITextField object? - uitextfield

I have a simple question.
In an iApp in Japanese I have one UITextField object which do not need Japanese input.
Is it possible to disable Japanese-mode input only for this one object.
(That would make the input much easier for the user)
I have already tried:
myTextField.autocorrectionType=UITextAutocorrectionTypeNo;
and it does not work.
Thanks for any tip.

UITextField has keyboardType property.
When the keyboardType is set to UIKeyboardTypeDefault, Japanese keyboard could be shown as a default keyboard.
typedef enum {
UIKeyboardTypeDefault,
UIKeyboardTypeASCIICapable,
UIKeyboardTypeNumbersAndPunctuation,
UIKeyboardTypeURL,
UIKeyboardTypeNumberPad,
UIKeyboardTypePhonePad,
UIKeyboardTypeNamePhonePad,
UIKeyboardTypeEmailAddress,
UIKeyboardTypeDecimalPad,
UIKeyboardTypeTwitter,
UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable
} UIKeyboardType;
To set keyboadType Programmatically, you can use setKeyboardType as folows:
[myTextField setKeyboardType:UIKeyboardTypeASCIICapable];
The document is here:
http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UITextInputTraits_Protocol/Reference/UITextInputTraits.html

Related

Restrict input on NSTextField

I want to restrict character input on NSTextField, i.e. so that disallowed characters aren't even appearing. Most of what I found about this topic were solutions that only validate after text input finished or using NSFormatter which still allows the character to appear.
So far I came up with this solution, sub-classing NSTextField:
class RestrictedTextField : NSTextField
{
static let VALID_CHARACTERS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890'-.& ";
override func textDidChange(notification:NSNotification)
{
for c in stringValue
{
if (RestrictedTextField.VALID_CHARACTERS.rangeOfString("\(c)") == nil)
{
stringValue = stringValue.stringByReplacingOccurrencesOfString("\(c)", withString: "", options: .LiteralSearch, range: nil);
break;
}
}
}
}
It works but isn't really optimal because the textcursor still moves by one space if an invalid character is tried to be entered. I also think the loop shouldn't be necessary so I wonder does somebody know a more elegant solution for this?
You have complete control with a subclass of NSFormatter. I'm not sure why you think you don't.
Override isPartialStringValid(_:proposedSelectedRange:originalString:originalSelectedRange:errorDescription:) and implement the desired logic. From the docs (with some minor edits by me):
In a subclass implementation, evaluate [the string pointed to by *partialStringPtr] according to the context. Return YES if partialStringPtr is acceptable and NO if partialStringPtr is unacceptable. Assign a new string to partialStringPtr and a new range to proposedSelRangePtr and return NO if you want to replace the string and change the selection range.
So, if the user tries to insert disallowed characters, you can either reject their edit in its entirety or modify it to strip those disallowed characters. (Remember that user changes can include pasting, so it's not necessarily just a single typed character.) To reject the change entirely, assign origString to *partialStringPtr and origSelRange to *proposedSelRangePtr.

How can I bind the text in a NSTextField to the value of a property on a controller using a storyboard?

I have a custom view with two text subviews, arranged, not that it matters, as per this amazing ASCII art:
/--------\
| lblOne |
| lblTwo |
\--------/
On my controller, I have a property of type Thingy:
class AwesomeController: NSViewController {
var thingy: Thingy! = nil
}
A Thingy has two properties of interest:
class Thingy: NSObject {
var one: String
var two: String
}
I would like to set up a binding between lblOne's string value and thingy.one, and lblTwo's string value and thingy.two, going through a custom view class if necessary.
When thingy is changed, obviously the two text fields should also change. (In other words, it should behave normally for a cocoa binding.)
I think it's probably a combination of learning Swift and my unfamiliarity with storyboards on OS X (last time I did cocoa development, it was still xibs), but I can't work out how to link the damn thing up.
Getting bindings to work in Swift requires two additional steps:
All the vars must be marked with dynamic, eg:
dynamic var one: String
You have to recompile the project (with cmd+B, not just in the background) in order for the var to appear as an option in IB

UITextInputDelegate methods not functioning correctly

I'm working on iOS 8 custom keyboard extension right now, and there are some issues in using UITextInputDelegate Methods.
Does this right: selectionWillChange: and selectionDidChange: methods should be called when user long-presses typing area? And textWillChange: and textDidChange: methods should be called whenever the text is literally changing?
Actually, what I observed is that, when I changed selection in text input area, textWillChange: and textDidChange: are called, and I cannot get a clue that the other two methods are called in what condition. If anyone knows about the usage of these delegate methods, please let me know.
It's not working for me either... what I am currently doing is just using textWillChange and textDidChange which does get called, as you mentioned, when you change your selection... (they get called BEFORE and AFTER) And then comparing the: self.textDocumentProxy.documentContextBeforeInputself.textDocumentProxy.documentContextAfterInput From BEFORE (textWillChange) to the AFTER (textDidChange) to see if selection range or length changed at all.
Something like this (set the 4 NSStrings below in your .h file of course... haven't tested this exact snippet because I wrote it from scratch just now on SO.com but I'm sure the principle works if I made any errors)
- (void)textWillChange:(id<UITextInput>)textInput {
beforeStringOfTextBehindCursor = self.textDocumentProxy.documentContextBeforeInput;
beforeStringOfTextAfterCursor = self.textDocumentProxy.documentContextAfterInput;
}
- (void)textDidChange:(id<UITextInput>)textInput {
afterStringOfTextBehindCursor = self.textDocumentProxy.documentContextBeforeInput;
afterStringOfTextAfterCursor = self.textDocumentProxy.documentContextAfterInput;
BOOL didSelectionChange = NO;
if (![beforeStringOfTextBehindCursor isEqualToString:afterStringOfTextBehindCursor]) {
didSelectionChange = YES;
}
if (![beforeStringOfTextAfterCursor isEqualToString:afterStringOfTextAfterCursor]) {
didSelectionChange = YES;
}
if (didSelectionChange) {
NSLog(#"Selection Changed!");
}
}
I had the same problem with the functions specified in the UITextInput protocol not being called. The reason as far as I can discern is due to the fact that the inputDelegate is set at runtime. According to the ios docs:
The UIKit provides a private text input delegate, which it assigns at runtime to the inputDelegate property of the object whose class adopts the UITextInput protocol. link
The fix which works in my case is to reset the inputDelegate in the function:
textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string
by the following line:
[myUITextField setInputDelegate:self];
where self implements the UITextInputDelegate protocol.

NSTextField with auto-suggestions like Safari's address bar?

What's the easiest way to have an NSTextField with a "recommendation list" dynamically shown below it as the user types? Just like Safari's address bar that has a menu of some sorts (I'm pretty confident Safari's address bar suggestions is menu since it has rounded corners, blue gradient selection, and background blurring).
I've tried using NSTextView's autocompletion facility but found it was inadequate:
It tries to complete words instead of the whole text fields – in other words, selecting an autocomplete suggestion will only replace the current word.
It nudges the autocompletion list forward and align it with the insertion point instead of keeping it align with the text field.
In the sample screenshot above whenever I selected the autocomplete suggestion the text field only replaces K with the suggested item in the list, which results in Abadi Abadi Kurniawan.
These are what I'd like to achieve:
Whenever a suggestion is selected, the entire text field is replaced with the suggestion.
Keep the suggestion list aligned with the text field's left side.
Note: This is not a question about adding progress indicator behind a text field.
The Safari address bar uses a separate window. Apple has example project CustomMenus and it only takes an hour or two to customize it.
Developer session explaining what has to be done Key Event Handling in Cocoa Applications
If you want to be able to select multiple words you need to provide own FieldEditor (credits should go for someone else)
- (id)windowWillReturnFieldEditor:(NSWindow *)sender toObject:(nullable id)client;
{
if ([client isKindOfClass:[NSSearchField class]])
{
if (!_mlFieldEditor)
{
_mlFieldEditor = [[MLFieldEditor alloc] init];
[_mlFieldEditor setFieldEditor:YES];
}
return _mlFieldEditor;
}
return nil;
}
- (void)insertCompletion:(NSString *)word forPartialWordRange:(NSRange)charRange movement:(NSInteger)movement isFinal:(BOOL)flag
{
// suppress completion if user types a space
if (movement == NSRightTextMovement) return;
// show full replacements
if (charRange.location != 0) {
charRange.length += charRange.location;
charRange.location = 0;
}
[super insertCompletion:word forPartialWordRange:charRange movement:movement isFinal:flag];
if (movement == NSReturnTextMovement)
{
[[NSNotificationCenter defaultCenter] postNotificationName:#"MLSearchFieldAutocompleted" object:self userInfo:nil];
}
}
This only addresses half of your answer, but I believe you need to subclass NSTextView and implement the - (NSRange)rangeForUserCompletion method, returning the range of the entire string in the text field. This should make sure that it doesn't just autocomplete the most recently entered word.
If you want a custom menu, you're going to have to do that yourself, probably by implementing the -controlTextDidChange: method and displaying a custom view with a table when appropriate.

Set value to label with a text field

I want to make an app that allows the user to enter a value in a text field and from that, it should change the value of a label. I'm new in programming so I don't really know how to code it. In the .m file how should I connect the text field's value to the value of the label?
Thanks in advance
Bind your textField to this method
– textFieldShouldEndEditing:(UITextField*) txtField
{
[labelField setText: [textField text]]
return YES:
}

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