How can i hide the keyboard when the uitextView is in focus~~ - ios

I hava a UITextView ,and after some characters' input, I want to use a button click to hide the keyboard and the UITextView is still in focus....[Attention:the button is not a return key or a done key];

Have you set delegate to your UITextView instance?
If so, try using [_textView resignFirstResponder];
else
Try using [self.view endEditing:YES];

mplement following code to your view controller .m file & .h file add delegate of textView
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if([text isEqualToString:#"\n"])
[textView resignFirstResponder];
return YES;
}
Now goto interface builder, select your textview & set return key type done.

Related

White spaces in Objective-c

I added a feedback box inside my IOS application, and I want it to take only text to submit the response from the user, but when I tried to enter a white spaces inside the box it took it as a text and accept the submitting! How can I prevent that?
Specify the UIViewController as the delegate to your text view (you can do this either programmatically or specify the delegate in Interface Builder); and
Your UITextViewDelegate method shouldChangeTextInRange needs to check to see if the string to be inserted contains a space:
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {
if ([text rangeOfCharacterFromSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]].location != NSNotFound) {
return NO;
}
return YES;
}

UITextView resignFirstResponder not working

I'm trying to hide the keyboard after the user clicked on the return button of the keyboard.
I'm using this function to hide it:
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
replacementText:(NSString *)text
{
if ([text isEqualToString:#"\n"]) {
[textView resignFirstResponder];
return NO;
}
return YES;
}
When the textview is empty this function works but once there is a characters in the textview,nothing happens and the keyboard doesnt get hidden.
I would suggest to use [self endEditing:YES]; or self.view endEditing:YES]
Found the answer. Was my fault. I had a function which once the user finished editing i'm checking if it's empty or not. For some reason returned no instead of yes. Thanks for the help

Text View has to Detect links automatically in iOS

I have a textView in which I type a url address and press a button. There is a service which detects the link and display links information like image, description etc,
My question is, do we have any option that without pressing a button can the service be automatically called.
For Example I am typing "facebook.com" now with out pressing a button can i call my web service
If you are using a UITextField then use do this to detect text change;
[textField addTarget:self
action:#selector(textFieldDidChange:)
forControlEvents:UIControlEventEditingChanged];
This is the method:
-(void)textFieldDidChange :(UITextField *)aTextField{
NSLog( #"text changed: %#", aTextField.text);
//Call your web Service
}
For UITextView implement its delegate methods:
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
//text is the new part that is added to textView
return YES;
}
Note: Don't forget to add the delegate.

iOS toggle default keyboard from ABC mode to 123 mode via code?

I can see how to set the keyboard's overall type via:
self.myTextView.keyboardType = UIKeyboardTypeDefault;
How can I toggle the default keyboard's mode from ABC to 123 and back again via code? Basically the moment the user taps the # character (the # symbol is available when they're in 123 mode) I want to switch their keyboard back to ABC mode.
Any ideas?
You might be able to accomplish this in by using the UITextViewDelegate. It allows you to intercept the keys as they are pressed in the UITextView. This will allow you to switch keyboards when the user presses a certain key. In order to revert back to the default state of the UIKeyboardTypeDefault keyboard, you'll need to change the keyboard type to another, then back to the default.
In your ViewController.h file, make it implement the UITextViewDelegate protocol:
#interface ViewController : UIViewController <UITextViewDelegate>
In your ViewController's viewDidLoad method in the ViewController.m, set the textField's delegate to the view controller:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.myTextView.delegate = self;
}
Finally, we need to capture the key as it is being entered and change the keyboard appropriately. We do this in the shouldChangeCharactersInRange: method.
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if( [#"#" isEqualToString:text] )
{
NSLog( #"Toggling keyboard type");
textView.inputView = nil;
[textView resignFirstResponder];
[textView setKeyboardType:UIKeyboardTypeEmailAddress];
[textView becomeFirstResponder];
[textView reloadInputViews];
textView.inputView = nil;
[textView resignFirstResponder];
[textView setKeyboardType:UIKeyboardTypeDefault];
[textView becomeFirstResponder];
[textView reloadInputViews];
}
return YES;
}
So I was originally confused and thought you actually wanted to change the keyboard type. Now that I'm reading your comment, I realize that you're actually wanting to reset the keyboard to it's default state of showing the letters, instead of numbers and special characters. The above code now does that.

Focus of cursor is not shifting to next UITextView in ios

This is my First question on ios
I am using two UITextView objects (textView1 and textView2) in a View, Each of them has some character limit with some following Scenario:
Initially user can only enter into textView1.
When the entered character limit of textView1 is over, the cursor will automatically shift to textView2.
After building the project, If user tap the textView2 and try to write into it, Cursor must shifted to textView1 (because it is empty).
I wrote the code and everything works fine except the third scenario, User can only enter into textView1 but focus is still on textView2
Steps to reproduce:
Build the project
user tap the textView2 first and try to write something.
According to written code, Focus remain in textView2 but user are writing into textView1 (see the attachment)
Here is the snapshot:
Here is the written code:
- (void)viewDidLoad
{
[super viewDidLoad];
[self.textView1 becomeFirstResponder];
}
- (void)textViewDidChange:(UITextView *)textView{
NSInteger restrictedLengthForTextView1 = 110;
NSInteger restrictedLengthForTextView2 = 130;
NSString *temp=textView.text;
if(textView == self.textView1){
if([[textView text] length] > restrictedLengthForTextView1){
textView.text=[temp substringToIndex:[temp length]-1];
[textView resignFirstResponder];
[self.textView2 becomeFirstResponder];
}
}else{
if([[textView text] length] > restrictedLengthForTextView2){
textView.text=[temp substringToIndex:[temp length]-1];
[self.textView2 resignFirstResponder];
}
}}
- void()textViewDidBeginEditing:(UITextView *)textView{
NSInteger restrictedLengthForTextView1 = 110;
NSLog(#"dalknwdlakwd");
if([[self.textView1 text] length] < restrictedLengthForTextView1){
if(textView == self.textView2){
[self.textView2 resignFirstResponder];
[self.textView1 becomeFirstResponder];
}
}}
Please help me here..
please do as per following:
in .h file
#interface ViewController : UIViewController<UITextViewDelegate>
{
IBOutlet UITextView *txtView1;
IBOutlet UITextView *txtView2;
}
#end
in .m file
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[txtView1 becomeFirstResponder];
txtView2.editable=NO;
}
implement the textView delegate method like below:
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if(textView.tag==1)
{
if([textView.text length]>25)
{
txtView2.editable=YES;
[txtView2 becomeFirstResponder];
}
}
return YES;
}
i have taken text length limit in first textview as 24 characters as an example.
i hope this will help you.
It is a known bug, with resigning and becoming first responder within the same runloop. Try the following
[textView2 resignFirstResponder];
[textView1 performSelector:#selector(becomeFirstResponder) withObject:nil afterDelay:0.0];
An update to Annadurai's answer: it's still a bug in 2016! After trying others' suggestions to deselect the surrounding tableview cell, and/or change the tint color only this answer worked for me:
[textView1 performSelector:#selector(becomeFirstResponder) withObject:nil afterDelay:0.0];
FYI My case was that I was resigning a textView, reloading the table, and returning to the same textView. Before this fix - no cursor on the reloaded textView (Yes I could type and see characters.) After the performSelector... afterDelay - the cursor was visible again.

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