in my application i have a bunch of textlabels and textviews. Sometimes the textview is underneath the keyboard. My question is if there's a way to check if a textview is behind the keyboard to move it up. I already know how to move views up, and i know about the keyboardWillAppear notifications, but i don't know how to check if the view is behind the keyboard. The thing is that i don't want to move the textview if it's not underneath the kayboard. How can achieve that?
Thanks in advance.
I would do the check for first responder as shown above
[text isFirstResponder];
then I'd check to see if the bounds of the text field's bounds are less than 215 (because i think that's the max height of the keyboard) and accommodate from there. so all together it looks like:
if([text isFirstResponder]){
if(text.bounds.y > 215){
text.bounds.y = CGPointMake(text.bounds.y-(text.bounds.y-215));
}
}
I think the only way to see this is to verify each UITextField and UITextView if it returns YES for
[_text isFirstResponder];
If any UITextField or UITextView is First Responder, than it means that the keyboard is on the bottom of the screen.
You can see the keyboard will appear by listening to UITextFieldDelegate and UITextViewDelegate ShouldBeginEditing events:
for UITextField it is:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField;// return NO to disallow editing.
and for UITextView it is:
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView;
Hope it helps.
Related
I am trying to disable the scrolling (and preferably all background touches) when editing a uitextfiled.
Here is the scenario:
I have a ScrollView setup with several text fields. Upon editing a text field I animate the view up/down so that the text field will sit just above where the keyboard/keypad will appear. In the case where I changed the keyboard style to phone/number pad I have a subview setup with a done button available to dismiss the keyboard when editing is done. All of the animation works as expected. However, the user is able to scroll the background and select other fields. I would like to disable this functionality so that all they can do is view what is shown on the screen and edit the one field.
I've tried doing the [scrollView setUserInteractionEnabled:NO] which locks the scroll view in place, however the keyboard is not available to type information into the text field. Again in the cases where the keyboard is set to phone/number pad my subview appears, just no keyboard.
I have also tried setting the textfield being edited as the first responder but that seems to mess up the view entirely, probably due to my animation of the view subview.
Is there a way for me to still animate the view the way I want and disable the scrolling of the scroll view, or all background touches in that view entirely?
Make your viewController the delegate of the textField and in the - (void)textFieldDidBeginEditing:(UITextField *)textField disable the scrolling.. self.scrollView.scrollEnabled = NO; and in the - (void)textFieldDidEndEditing:(UITextField *)textField set the scrolling enabled again...
You can also disable all the other textfields as your requirement states.
self.otherTextField.userInteractionEnabled = NO;
Hoping this helps.
Try this
- (void)textFieldDidBeginEditing:(UITextField *)textField{
scrollView.scrollEnabled = NO;
}
- (void)textFieldDidEndEditing:(UITextField *)textField{
scrollView.scrollEnabled = YES;
}
Did you try:
scrollView.scrollEnabled = NO
?
I'm pretty new to iPhone development, so please excuse my ignorance. I've googled this a bit and so far come up with nothing useful. Here is what I would like to do:
I would like a subview to popup(with the rest of the screen showing in the background) when a UITextField is touched. The popup is a calculator UIView that I created in the IB. It seems it is better to have a popup show than a customized keyboard, due to Apple's developer guidelines.
Here is my question. How do I capture the touch on the UITextField and how do I show the subview?
I have tried things like below to show the subview, with no luck:
CustomCalculator *customCalc = [[CustomCalculator alloc] initWithNibName:#"CustomCalculator" bundle:nil];
UIViewController *calcController = [self.customCalc.view];
[self.view addSubview:calcController.view];
Use the delegate method:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
//Add your subview here
return NO; //this will stop the keyboard from poping up
}
This way when someone taps the textfield, your view will popup instead of the keyboard.
Now once the user is interacting with your view, you will have to manipulate the string in the textfield.text property directly as a reaction to the User tapping buttons in your view.
Implement the UITextFieldDelegate and the method for it is
-(void) textFieldDidBeginEditing:(UITextField *)textField
The above method is fired when you touch the UITextField. You may then position the UIPopoverController (I'm guessing that is what you're using to show the view in a popup) and as soon as you're done there pass the values back to the UITextField. Hence the popover's/viewcontroller presented's delegate should be your textfield object.
EDIT: After seeing the other answer below it struck me that I forgot to tell you how to stop the keyboard from showing. Just make this the first line in the method I've mentioned above:
[textField resignFirstResponder];
I have the following code...
- (void)textFieldDidBeginEditing:(UITextField *)textField {
//some code here...
NSInteger theTag = textField.tag; //I set the tag to 5 in IB
if (theTag == 5) {
//self.showDatePicker;
[textField resignFirstResponder];
}
}
The problem is, the keyboard never disappears. Another thing to note is that I have some other methods that move the view up and down based on the position of the textfield selected. Maybe that's messing up my Responder, but I just don't understand why the keyboard won't go away.
Also, I might just be doing this all wrong. I want this textField, when pressed, to hide the keyboard and show a date picker. Should this be in a different method?
If you're targeting iOS 3.2+, I'd suggest looking into UITextField's inputView property. You can assign a custom view (i.e. a data picker) to be displayed when the text field becomes the first responder instead of the keyboard.
I have many textfields in my Application which are in a scrollview.
What i need is when user touches on a textfield,
scrollview should scroll in such a way, so that that textfield should not be behind
the keyboard.
I've written a pretty straightforward tutorial on doing this, it mimics as much as possible the behavior of Apple own applications, if it can be of any help:
Adjust UITextField hidden behind Keyboard with UIScrollView
You can use the method - (void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated in UIScrollView, this should scroll to the offset of the point you give it, you will need to figure out the offset through code
Maybe you could set the text fields' delegates to self, and then adopt the UITextFielDelegate protocol for the class, and then in this method:
- (void)textFieldDidBeginEditing:(UITextField *)textField
Make the scroll view scroll down enough so that you can see the text field.. I don't know how to make the scrollview scroll down though.
Here is a free library for keyboard handling http://www.codeproject.com/Tips/509810/Keyboard-Handling-in-iPhone-Applications. You need write just one line of code:
[AutoScroller addAutoScrollTo:scrollView];
Dont confuse with name AutoScroller. Purpose is same what you asked.
I am writing an application that has a UITextView which allows editing. When a user first touches UITextView, a keyboard shows up and I want to retract that keyboard when user again touches the UITextView e.g. I have entered some data in a textview and with keyboard still showing on the screen I tap on the UITextView which should cause the keyboard to retract.
Is there any way to achive this?
(I'm aware of providing a done button and doing this but I want to achive this by tapping on UITextView itself)
As an aside, I would urge you not to use toggle state elements on the iPhone. It's to easy to double tap in real world use. That is why the Apple apps all use the either the "return" key on the keyboard or the done button.
In the interface you contemplate, the users will find themselves closing and then accidentally reopening the keyboard about 10% of the time or more. It will make your app feel cumbersome and flaky.
You should call resignFirstResponder for the UITextView. Let's say you have an IBOutlet for the text view:
#property (nonatomic, retain) IBOutlet UITextView *comment;
Then [comment resignFirstResponder]; can be called from a touchesBegan or the like.
See e.g. How to Dismiss the Keyboard when using a UITextView.
What you are looking for is a large transparent uibutton "overlapButton" which always stays on top of the uitextview.
When the textview appears, you set the button hidden so you can tap on the textview freely.
[overlapButton setHidden:YES];
When tapping the textview, the keyboard will come up and the following method inside your textview delegate will get called:
-(BOOL)textViewShouldBeginEditing:(UITextView *)textView{
[overlapButton setHidden:NO];
}
Here, you need to set visible the "overlapButton" so that while the keyboard is up, you can touch the button which now overlaps the textview. On the button action, you can hide the keyboard:
-(IBAction) overlapButtonTapped{
[myTextView resignFirstResponder];
}
After resigning the first responder, the following method will get called:
-(BOOL)textViewShouldEndEditing:(UITextView *)textView{
[overlapButton setHidden:YES];
}
After setting the hidden property accordingly for the button (like above), you have a "clear" textview again which you can tap again to show the keyboard.. etc .. etc ..
Cheers.
I agree with you TechZen. I've seen this happen! I would not advise this also! It also makes editing very hard if not impossible for edit/copy/paste gestures. On the other hand, if the man still wants this badly.. :P the code provided by me in my other post works a treat! Cheers.