IOS develops UITextView to recycle or close the keyboard

IOS develops UITextView to recycle or close the keyboard

In the development of iOS, it is found that UITextView does not have a method like textFieldShouldReturn: in UITextField. In order to achieve UITextView to close the keyboard, other methods must be used. The following are several methods that can be used.

1. If your application has a navigation bar, you can add an Done button to the navigation bar to exit the keyboard.

- (void)textViewDidBeginEditing:(UITextView *)textView { 
  UIBarButtonItem *done =  [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(leaveEditMode)] autorelease]; 
  self.navigationItem.rightBarButtonItem = done;   
} 
 
- (void)textViewDidEndEditing:(UITextView *)textView { 
  self.navigationItem.rightBarButtonItem = nil; 
} 
 
- (void)leaveEditMode { 
  [self.textView resignFirstResponder]; 
} 

2. If you don't use the enter key in your textview, use the enter key as a response to the exit keyboard.

-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text 
{ 
  if ([text isEqualToString:@"\n"]) { 
    [textView resignFirstResponder]; 
    return NO; 
  } 
  return YES; 
} 

Whether you use the enter key on your computer keyboard or the return key in the pop-up keyboard, you can exit the keyboard.

3. The third method, which feels better than the above two, is to add an view to the pop-up keyboard to place the Done button to exit the keyboard.

UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 30)]; 
  [topView setBarStyle:UIBarStyleBlack]; 
   
  UIBarButtonItem * helloButton = [[UIBarButtonItem alloc]initWithTitle:@"Hello" style:UIBarButtonItemStyleBordered target:self action:nil]; 
   
  UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; 
   
  UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)]; 
   
  NSArray * buttonsArray = [NSArray arrayWithObjects:helloButton,btnSpace,doneButton,nil]; 
  [doneButton release]; 
  [btnSpace release]; 
  [helloButton release]; 
   
  [topView setItems:buttonsArray]; 
  [tvTextView setInputAccessoryView:topView]; 
 
-(IBAction)dismissKeyBoard 
{ 
  [tvTextView resignFirstResponder]; 
} 
 

Thank you for reading, I hope to help you, thank you for your support of this site!