I've probably missed something...
First, I inherited from UITextField and added a Tap gesture recogniser to a UITextField (in the designated initialiser):
UITapGestureRecognizer * ges = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(pressed:)];
[self addGestureRecognizer:ges];
-(void)pressed:(id)sender
{
didPressed = YES;
[self becomeFirstResponder];
}
Then I set my viewController to be the textField delegate and implemented this:
- (BOOL)textField:(UIOneLetterTextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSLog(#"Key Pressed %#", string);
textField.text = string;
[textField resignFirstResponder];
UITapGestureRecognizer * ges = [[UITapGestureRecognizer alloc] initWithTarget:textField action:#selector(pressed:)];
[textField addGestureRecognizer:ges];
[self gotoNextTextfield:textField.cellLoc];
return NO;
}
From this point, for some reason, pressed: doesn't get called when tapping on the textField.
Any Idea why?
The delegate should implement
gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer:
and return YES.
Is there a specific reason why you are using a UITapGestureRecognizer? The UITextFieldDelegate has a methods that are called whenever a textField starts editing :
textFieldShouldBeginEditing:
textFieldDidBeginEditing:
Unless you have some code that conflicts with these methods, you do not need a UITapGestureRecognizer
Related
I write a simple application with Xcode 5 on iPhone iOS7 device.
I have a label that increments by +/- Buttons, but i want to give option for user to insert his number to this label.
How can i do it with long press recogniser?
Thanks.
Use a UILongPressGestureRecognizer and a UITextView.
Add a UILongPressGstureRecognizer property to your view controller:
#property UILongPressGestureRecognizer *gestureRecognizer;
You need to declare that your view controller conforms to the UITextViewDelegate and UIGestureRecognizerDelegate protocols:
#interface ViewController : UIViewController<UITextViewDelegate, UIGestureRecognizerDelegate>
In viewDidLoad:
self.textView.editable = NO;
self.textView.delegate = self;
self.gestureRecognizer = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:#selector(textViewLongPressed:)];
self.gestureRecognizer.delegate = self;
[self.textView addGestureRecognizer:self.gr];
This is the method that will be called when you long press the text view:
-(void) textViewLongPressed:(UILongPressGestureRecognizer *)sender
{
self.textView.editable = YES;
[self.textView becomeFirstResponder];
}
Implement this method from the UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
if (self.gestureRecognizer == gestureRecognizer){
return YES;
}
return NO;
}
When you finish editing the text view
-(void) textViewDidEndEditing:(UITextView *)textView
{
self.textView.editable = NO;
}
To dismiss the keyboard when you press return:
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if ([text isEqualToString:#"\n"])
[textView resignFirstResponder]; // or [textView endEditing:YES]
return YES;
}
In my app I have a UITextField on the navigationController toolbar.
#import "ViewController.h"
#interface ViewController ()
#property (nonatomic,strong) NSArray *toolBarButtonItems;
#property (nonatomic,strong) UITextField *textField;
#property (nonatomic,strong) UITextField *textField2;
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.textField = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, 60, 40)];
self.textField.delegate = self;
self.textField.borderStyle = UITextBorderStyleRoundedRect;
UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc]initWithCustomView:self.textField];
self.toolBarButtonItems = #[flexibleSpace,barButtonItem,flexibleSpace];
self.toolbarItems = self.toolBarButtonItems;
self.navigationController.toolbar.barTintColor = [UIColor blueColor];
[self.navigationController setToolbarHidden:NO animated:NO];
}
When the textField is clicked the keyboard opens up and I create a new inputAccessoryView toolbar with another textField.
-(UIToolbar *)addToolBar{
UIToolbar *toolbar = [[UIToolbar alloc]initWithFrame:self.navigationController.toolbar.frame];
toolbar.barTintColor = [UIColor darkGrayColor];
self.textField2 = [[UITextField alloc]initWithFrame:CGRectMake(0, 0, 60, 40)];
self.textField2.delegate = self;
self.textField2.borderStyle = UITextBorderStyleRoundedRect;
UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc]initWithCustomView:self.textField2];
[toolbar setItems:#[flexibleSpace,barButtonItem,flexibleSpace]];
return toolbar;
}
The idea is to change the firstResponder to the textField on the inputAccessoryView so this way I can see what I'm editing. The reason I am doing this is cause I can't scroll the Navigation toolbar up past the keyboard and I want to see the text that I am editing.
-(void)textFieldDidBeginEditing:(UITextField *)textField{
textField.inputAccessoryView = [self addToolBar];
if(self.textField2.isFirstResponder != NO){
[self.textField2 becomeFirstResponder];
}
}
It doesn't seem to be working when I click on the textField in the navigationController toolbar. The new inputAccessoryView toolbar shows up over the keyboard but I can't edit the field because the responder doesn't seem to be changing. The return key doesn't work either. I have to hit it twice in order to close the keyboard and when I do the text doesn't match up between the two text fields.
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
self.textField.text = self.textField2.text;
return YES;
}
I got it to work like this:
#import "KJMViewController.h"
#interface KJMViewController ()
#property (strong, nonatomic) UITextField *textField1;
#property (strong, nonatomic) UITextField *textField2;
#end
#implementation KJMViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.textField1 = [[UITextField alloc]initWithFrame:CGRectMake(30, 7, 260, 30)];
self.textField1.borderStyle = UITextBorderStyleRoundedRect;
self.textField1.delegate = self;
UIToolbar *navToolbar = self.navigationController.toolbar;
[navToolbar addSubview:self.textField1];
UIToolbar *toolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];
self.textField2 = [[UITextField alloc]initWithFrame:CGRectMake(30, 7, 260, 30)];
self.textField2.borderStyle = UITextBorderStyleRoundedRect;
self.textField2.delegate = self;
[toolbar addSubview:self.textField2];
self.textField1.inputAccessoryView = toolbar;
[[NSNotificationCenter defaultCenter]addObserver:self selector:#selector(firstRes:) name:UIKeyboardDidShowNotification object:nil];
}
- (void)firstRes:(id)sender
{
[self.textField2 becomeFirstResponder];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if (textField == self.textField2) {
self.textField1.text = self.textField2.text;
}
[textField resignFirstResponder];
[self.textField1 resignFirstResponder];
return YES;
}
- (void)viewDidDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter]removeObserver:self forKeyPath:UIKeyboardDidShowNotification];
[super viewDidDisappear:animated];
}
#end
Here's what's happening in viewDidLoad:
Initialise toolbar and textField2
Set the inputAccessory for textField1 (the one hidden by the keyboard) here so it's ready to become firstResponder
Then in the viewDidAppear method:
Sign up for a notification that's sent when the keyboard is shown. You'll then write some code in the "firstRes" method to make textField2 the firstResponder. You need to make it the firstResponder using this notification because you know that it's in the view hierarchy by this time, which means it's able to become firstResponder. Calling it in the -(void)textFieldDidBeginEditing:(UITextField *)textField seems to fire it before textField2 comes on screen, meaning that it can't become firstResponder. We sign up for it in the viewDidAppear method because we only want to get the notification if we're on screen.
After textField2 resignsFirstResponder, textField1 becomes first responder again, so you have to call resignFirstResponder twice in the textFieldShouldReturn method.
Also, if we leave the screen, we need to remove ourself as an observer of the keyboard notification in the viewDidDisappear method.
Here's a link to the project I made in Xcode so you can see how it works:
https://github.com/kylejm/UIToolBar-UITextView
I have an application with UIScrollView added as a subview of UIView. i have added UITextField,UITextview as a subView of UIScrollView .I want to dismiss the keyboard when i tap in the scroll view. how can i do this?
Just add UITapGestureRecognizer
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(singleTapGestureCaptured:)];
[scr addGestureRecognizer:singleTap];
}
- (void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
{
//Get touch point
CGPoint touchPoint=[gesture locationInView:scr];
//Hide keyBoard
[self.view endEditing:YES];
}
In iOS 7, you can achieve this easily.
scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
Try this,
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(dismissKeyboard)];
tapGesture.cancelsTouchesInView = NO;
[scrollView addGestureRecognizer:tapGesture];
[tapGesture release];
}
-(void)dismissKeyboard
{
[txtNotes resignFirstResponder];
[textView resignFirstResponder];
}
When I added the gesture to a subclass of UIScrollView, I was having problems with the various gestures in my view tree interfering with each other, such as being able to click on subviews, scroll the view, and have the keyboard dismiss in all cases. I came up with this solution, which can be setup from a superclass of UIScrollView or from a UIViewController.
The DismissKeyboardTapGesture class uses ARC, works with any text fields under the view, and doesn't take over any clicks from subviews like buttons. Also takes advantage of iOS7 scrolling effect to dismiss keyboard.
Setting up from UISScrollView superclass:
_dismissKeyboard = [[DismissKeyboardTapGesture alloc] initWithView:self];
or from UIViewController:
_dismissKeyboard = [[DismissKeyboardTapGesture alloc] initWithView:self.view];
Here is the class:
#interface DismissKeyboardTapGesture : NSObject <UIGestureRecognizerDelegate>
#end
#implementation DismissKeyboardTapGesture
- (id)initWithView:(UIView *)view
{
self = [super init];
if (self) {
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(singleTap:)];
singleTap.cancelsTouchesInView = NO;
singleTap.delegate = self;
[view addGestureRecognizer:singleTap];
if ([view respondsToSelector:#selector(setKeyboardDismissMode:)]) {
// Bonus effect to dismiss keyboard by scrolling
((UIScrollView *)view).keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
}
}
return self;
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
// Don't stop any existing gestures in our view from working
if (otherGestureRecognizer.view == gestureRecognizer.view) {
return YES;
}
return NO;
}
- (void)singleTap:(UIGestureRecognizer*)gestureRecognizer
{
// Close keyboard for any text edit views that are children of the main view
[gestureRecognizer.view endEditing:YES];
}
#end
The below code shows that when a user does a long press gesture on a Table View Cell, then a UIActionSheet launches with a UITextField inside of it. When tapping the UITextField, the keyboard launches, and textFieldShouldBeginEditing and textFieldDidBeginEditing get called, but the text field won't accept the key taps.
Hitting the return key won't trigger the delegate methods, but tapping one of the UIActionSheet buttons will trigger textFieldShouldEndEditing and then textFieldDidEndEditing.
I'm setting the textField to become the first responder, so I'm not sure why it's not accepting input from the keyboard. Any suggestions?
- (void)longPress:(UILongPressGestureRecognizer *)gesture
{
// only when gesture was recognized, not when ended
if (gesture.state == UIGestureRecognizerStateBegan)
{
// get affected cell
SinTableViewCell *cell = (SinTableViewCell *)[gesture view];
// get indexPath of cell
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
// do something with this action
NSLog(#"Long-pressed cell at row %d", indexPath);
AppDelegate_Shared *appDelegate = (AppDelegate_Shared*)[UIApplication sharedApplication].delegate;
//setup UITextField for the UIActionSheet
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 170, 320, 200)];
textField.borderStyle = UITextBorderStyleBezel;
textField.backgroundColor = UIColorFromRGB(0XFFFFFF);
textField.text = #"";
textField.delegate = self;
[textField setKeyboardType:UIKeyboardTypeAlphabet];
[textField setKeyboardAppearance:UIKeyboardAppearanceAlert];
//setup UIActionSheet
UIActionSheet *asheet = [[UIActionSheet alloc] initWithTitle:#"Add Notes"
delegate:self
cancelButtonTitle:#"Cancel"
destructiveButtonTitle:nil
otherButtonTitles: #"Save", nil];
[asheet showFromTabBar:appDelegate.tabBarController.tabBar];
[asheet setFrame:CGRectMake(0, 100, 320,380)];
[asheet insertSubview:textField atIndex:0];
//[textField becomeFirstResponder];
//memory management
[textField release];
[asheet release];
}
}
#pragma mark -
#pragma mark UIActionSheetDelegate
- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex {
}
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
}
#pragma mark -
#pragma mark UITextFieldDelegate
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
NSLog(#"textFieldShouldBeginEditing");
return YES;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField {
NSLog(#"textFieldDidBeginEditing");
[textField becomeFirstResponder];
}
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField {
NSLog(#"textFieldShouldEndEditing");
return YES;
}
//should save the notes value here, I think
- (void)textFieldDidEndEditing:(UITextField *)textField {
NSLog(#"textFieldDidEndEditing");
[textField resignFirstResponder];
}
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
return YES;
}
- (BOOL)textFieldShouldClear:(UITextField *)textField {
NSLog(#"textFieldShouldClearEditing");
return YES;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
NSLog(#"in textFieldShouldReturn");
return YES;
}
Your question is a little bit old but not marked as answered, so if it is helpful for you or other viewers I post my solution from my own SO question. I started up with the same problem as you had and ended up in the fact that UIActionSheet really eats up some important events which are necessary to get the keyboard working properly.
My linked posted code unfortunately works only in portrait orientation, anyway it does it.
Is UITextFieldDelegate and UIActionSheetDelegate in your header?
If not, there could be problems while setting the textfield.delegate to self
Hey, I want to be able to check if user touches my UIView so I can dismiss my picker how can I do it actually? Thanks!
Try adding a UITapGestureRecognizer to your UIView class in the viewDidLoad of the UIViewController subclass that contains your UIView. It would look something like this:
- (void)viewDidLoad {
[super viewDidLoad];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(viewTapped:)];
tap.numberOfTapsRequired = 1;
[self.aView addGestureRecognizer:tap];
[tap release];
}
Then implement a handler for the tap which, based on the above code, would look like this:
-(void)viewTapped:(UITapGestureRecognizer *)recognizer {
//Add in your picker dismissal code here
}
Hope this helps,
Justin