1. Create and initialize
@property (nonatomic, strong) UITextView *textView; // Create = [[UITextView alloc] initWithFrame:]; // Set the font color in the textview = [UIColor blackColor]; // Set the font name and font size = [UIFont fontWithName:@"Arial" size:18.0]; // Set up a proxy = self; // Set its background color = [UIColor whiteColor]; = @“hehe”; // Return the key type = UIReturnKeyDefault; // Keyboard type = UIKeyboardTypeDefault; // Can it be dragged = YES;
2. Several ways to exit the keyboard with UITextView
(1) If your program has a navigation bar, you can add an additional Done button on the navigation bar to exit the keyboard. Of course, you must first implement UITextViewDelegate.
- (void)textViewDidBeginEditing:(UITextView *)textView {
= [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(getOverEditing)];
}
- (void)textViewDidEndEditing:(UITextView *)textView {
= nil;
}
- (void)getOverEditing{
[ resignFirstResponder];
}
(2) If you do not use the Enter key in your textview, you can use the Enter key as the response key to exit the keyboard.
#pragma mark - UITextView Delegate Methods
-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
{
if ([text isEqualToString:@"\n"]) {
[textView resignFirstResponder];
return NO;
}
return YES;
}
(3) You can also customize other view controls loaded on the keyboard to exit, such as adding a 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)];
UIBarButtonItem * cancelButton= [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(dismissKeyBoard)];
NSArray * buttonsArray = @[cancelButton];
[topView setItems:buttonsArray];
[ setInputAccessoryView:topView];
-(void)dismissKeyBoard
{
[tvTextView resignFirstResponder];
}
Customize the menu after selecting text
Add in ViewDidLoad:
- (void)viewDidLoad
{
[super viewDidLoad];
self._textView = [[UITextView alloc] initWithFrame:CGRectMake(10, 100, 300, 200)];
[ addSubview:_textView];
UIMenuItem *menuItem = [[UIMenuItem alloc]initWithTitle:@“I'm a custom menu" action:@selector(didClickCustomMenuAction)];
UIMenuController *menu = [UIMenuController sharedMenuController];
[menu setMenuItems:[NSArray arrayWithObject:menuItem]];
[menuItem release];
}
Of course, the changeColor method in the @selector above should be written by yourself, which means the method will be triggered after clicking our customized menu item.
Then you have to add a method to the code:
-(BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
if(action ==@selector(changeColor) || action == @selector(copy:))
{
if(_textView.>0)
return YES;
}
return NO;
}
-(void)didClickCustomMenuAction
{
NSLog(@"%@“,__function__);
}
4. Set the UITextView inner margin
When we use UITextView as a UILabel due to some requirements (in order to use the copy, paste, and select functions that come with UITextView), we only need to disable several properties of UITextView.
= NO;//Not editable = NO;//No scrolling = NO;//Not editable = NO;//No scrolling
That's OK;
But when we actually use it, we want to calculate the size of the text and set the display size of the UITextView
UIFont *font = [UIFont systemFontOfSize:14.0f]; //Specify the size of the string [textView setText:content]; CGSize textSize = [content sizeWithFont:font constrainedToSize:CGSizeMake(200, 2000) lineBreakMode:UILineBreakModeCharacterWrap]; CGRect articleframe = [articleLabel frame]; = ; = ; [textView setFrame:articleframe]; UIFont *font = [UIFont systemFontOfSize:14.0f]; //Specify the size of the string [textView setText:content]; CGSize textSize = [content sizeWithFont:font constrainedToSize:CGSizeMake(200, 2000) lineBreakMode:UILineBreakModeCharacterWrap]; CGRect articleframe = [articleLabel frame]; = ; = ; [textView setFrame:articleframe];
However, there is no problem using this method on UILabel, but it is not possible in UITextView. The text is always incomplete. No matter if you actively write too much height for it, when the text is different, it will be incomplete or too high.
You can try it with the following method
[ setContentInset:UIEdgeInsetsMake(-10, -5, -15, -5)];//Set the inner margin of UITextView[ setTextAlignment:NSTextAlignmentLeft];// and set left alignment[ setContentInset:UIEdgeInsetsMake(-10, -5, -15, -5)];//Set the inner margin of UITextView[ setTextAlignment:NSTextAlignmentLeft];// and set left alignment