and thanks for your responses in advance.
I have been looking around for the possibility of having a 10-key, numeric only, input available when a user clicks on certain fields that do not require the use of the full size keyboard.
I know that popovers can properly display custom types of input, but does anyone know if there is a way for a standard 10-keypad to display in a popover? And if so, can you point me in the right direction.
Again, thanks in advance.
-Rick
You don't need to use popover if you try to enter numeric value in a UITextField/UITextView.
You can replace the keyboard by your own view.
You just do :
[yourTextField setInputView:myInputView];
You can have a look at KeyboardAccessory sample from apple
http://developer.apple.com/iphone/library/samplecode/KeyboardAccessory/Introduction/Intro.html
In this example, they provide an accessory view to the input view but if you modify the code and set inputView instead of inputViewAccessory, you should be able to do what you need.
If you use a UITextView, you can append text where the carret is with the following code:
NSMutableString *text = [textView.text mutableCopy];
NSRange selectedRange = textView.selectedRange;
[text replaceCharactersInRange:selectedRange withString:#"\n"];
textView.text = text;
If you use a UITextField, it seems you can only append text at the end of the string (no mean to retrieve carret position).
Related
How would I go about adding text to a UITextView without replacing the previous text?
So far I have a UITextView and a UIButton that adds the text to the UITextView, but I would like the text field to append more text every time you hit the button instead of completely deleting the text and replacing it.
Here are some ways to overcome obstacles in iOS development:
Look at the documentation for the particular class you're trying to manipulate. In this case, UITextView documentation can be found within Xcode or online.
Command-Click on UITextView or any other object anywhere in your code, and it will bring you to the header file for that class. The header file will list every public method and property.
Look at your existing code. I'm assuming that since you have a button that adds text to a UITextView, you understand how to set its text. 99% of the time you'll find that any setter (mutator) methods will have a corresponding getter (accessor) method. In this case, UITextView has a method called setText: and a matching method just called text.
Finally, NSString has a convenience method called stringWithFormat: that you can use to concatenate (join) two strings, among other very useful things. %# is the format specifier for a string. For example, to combine two strings, stringOne and stringTwo, you could do the following:
NSString *string = [NSString stringWithFormat:#"%# %#", stringOne, stringTwo];
I will leave you to come up with the answer as to how to combine NSString stringWithFormat: and UITextField text and setText: to achieve what you'd like to accomplish.
Edit:
The OP was unable to figure out how to utilize the information above so a complete code sample has been provided below.
Assume you have synthesized property (possibly an IBOutlet) UITextView that you have initialized called myTextView. Assume also that we are currently in the method scope of the method that gets called (your IBAction, if you're using IB) when you tap your UIButton.
[myTextView setText:[NSString stringWithFormat:#"%# %#", myTextView.text, #"this is some new text"]];
Explanation: myTextView.text grabs the existing text inside of the UITextView and then you simply append whatever string you want to it. So if the text view is originally populated with the text "Hello world" and you clicked the button three times, you would end up with the following progression:
Initial String: #"Hello world"
Tap one: #"Hello world this is some new text"
Tap Two: #"Hello world this is some new text this is some new text"
Tap Three: #"Hello world this is some new text this is some new text text this is some new text"
If all you are doing is appending text, you might find this a little simpler:
myTextView.text = [myTextView stringByAppendingString:#"suffix\n"];
I found this on UITextView insert text in the textview text. Sadly, I have not found a way to append text directly without a wholesale replacement of the text in the UITextView. It bugs me that the effort involved is proportional to the total length of the existing string and the suffix, rather than just the suffix.
A more efficient way to append text is to use replace() at the end:
extension UITextInput {
func append(_ string : String) {
let endOfDocument = self.endOfDocument
if let atEnd = self.textRange(from: endOfDocument, to: endOfDocument) {
self.replace(atEnd, withText: string)
}
}
}
#Jack Lawrence: Your answer doesn't cover the question completely.
The example below will not scroll neatly while running off the bottom when called every second:
self.consoleView.text = [NSString stringWithFormat:#"%#%#%#", self.consoleView.text, data, #"\n"];
[self.consoleView scrollRangeToVisible:NSMakeRange(self.consoleView.text.length, 0)];
This is caused by setText replacing the original text every time thereby resetting associated contentOffsets etc.
This was possible prior to iOS 7, but since iOS 7 it seems that setText cannot be prevented from exhibiting jumpy behaviour. Appending does not seem to be an option for TextViews in this scenario?
i have two UITextView items, how can i fetch what is written using a button on iphone?
Imagine something like a translate app, the user enters a word in UITextView 1 and by pressing the button the UITextView 2 is getting filled with data.
UITextView has a property text. Simply use this.
Set up IBOutlets for textView1 and textView2. Then have the button do something along these lines:
-(IBAction)moveTextOver:(id)sender {
[textView2 setText:textView1.text];
}
To get fancier, you can have a method -(NSString *)transformText:(NSString *)text that translates or does whatever you like. Then use
-(IBAction)moveTextOver:(id)sender {
[textView2 setText:[self transformText:textView1.text]];
}
Create an IBAction method that is linked to a button and in that method read the "text" property of the textView or textField, do your calculations on it and assign the results to the text property of thee second field.
I have a textField created in IB. I have set the keypad type to Numeric Pad in IB.
When i make secureTextEntry = YES in -(void)textFieldDidBeginEditing:(UITextField *)textField method , my keypad changes from numberpad to generic keypad. I even tried to make the keypad to be numeric programatically but still it doesnot changes.
I have set it like this
-(void)textFieldDidBeginEditing:(UITextField *)textField{
if(textField == self.activationCodeTextField){
self.activationCodeTextField.secureTextEntry = YES;
self.activationCodeTextField.keyboardType = UIKeyboardTypeNumberPad;
}
}
FYI,
I cannot set the textField to be secure in IB because i have an hint text like "4-digits" displayed to the user in the textfield till he starts typing in the text filed. Once he starts typing in the textfield, i want the entries to be a secure text so that it displays only * instead of actual characters he types.
Can you please let me know whats wrong in what I am doing?
I also have two more query
I have a textField where i have some default text (like hint text). I want this hint text to be displayed to the user till the moment he starts typing. I dont want to clear this text when the user clicks on the textfield and then the default text clears away. but, i want this text to be displayed till the moment he actually starts to type something on the keypad, then the default must be cleared and then the actual typed in text to be displayed on the textfield. IS it possible to acheive this ?
Is it possible to set the cursor position of textfield to the first character programatically. This is needed because, i have some default text (hint text) and the cursor is at end of the text. I want the cursor to be at the start of the text. How to make this possible programatically?
Have you tried using -setPlaceholder: on your UITextField? That way you wouldn't need to do put text in the text field, and then later manually convert it to be secure. e.g.
- (void)viewDidLoad {
...
[textField setSecureTextEntry:YES];
[textField setPlaceholder:#"4-digits"];
...
}
That will completely take care of your last two questions. Regarding the first, though, I'm not sure if you can have a numeric keyboard for a secure UITextField or not. It would seem that you can't if setting it programmatically has no effect.
All I want to have is a full-screen simple text editor. However, I don't want the scrolling component, but rather let the user flick through the pages (instead of scrolling). So I need to import or open a TXT and then format it by braking it down (e.g. by dividing its contents to 10 lines per screen/page).
My question is how I will display the txt? UITextView is scrollable (even though I can disable this in IB)... I did not find any method for UIWebView to let it format my contents on different 'pages' or screens.
Where will I need to start? Ideally I'd need some sample code. All the samples for UIWebView do not tell me anything about how to format editable text on several pages.
So all I really want is an UITextView which is not scrollable and opens up a new page/screen if I run out of space on the first page/screen.
Thanks for any help to get me started.
first thing first ...... there is no particular method to achieve this
1.You need to break your single string into multiple strings, to do that you can use
int pageNumber; // suppose this keep track of on what page you are
int count; //suppose this keep track of how long string your one screen support
NSString* completeString; //suppose this is your string
NSRange range = NSMakeRange(pageNumber * count, count);
NSString* temp = [completeString substringWithRange:range];
2.Now instead of using UITextView (if you don't want user interaction ) you should use UILable
just change the property of UILabel (this one is of your interest)
UILabel* myLabel; //suppose this is that label
myLabel.numberOfLines = 0; //this will chage your label to go multyline.
You should be able to achieve this by putting your UITextView into a UIScrollView and setting pagingEnabled on the UIScrollView to YES.
I need to format text in a label like this:
username: some text from this user. This will
create additional lines of text that will go
on and on and on.
Where "username" is bold. This will go into a UILabel, which is in a custom table cell. Is there a way to get this type of layout?
For this relatively simple case, you might be able to fake it. Have one label with the bold username, and another label with the plain text in the same position. Insert enough spaces before the plain text to leave room for the username. You can use UIStringDrawing methods to measure the bold text and the spaces.
CGSize usernameSize = [theUsername sizeWithFont:theBoldUsernameFont];
CGSize spaceSize = [#" " sizeWithFont:thePlainCommentFont];
NSString *indentedComment = [NSString stringWithFormat:#"%*s%#" , (int)ceil( usernameSize.width / spaceSize.width ) , "" , theComment];
If you use plain UILabel it's not available. Use two labels for this task.
You need to use either a UIWebView or CoreText to do this kind of advanced text layout. A web view has a lot of overhead but is most flexible and you can't use it effectively in a UITableView cell. CoreText is low level and not that well documented. You could ditch the table view and just lay out the table with CSS and HTML in the web view, which is how I do it.
You can still use a UITableViewCell but have the cell use a UIWebView subview. Set up a custom cell subclass with a clever setter method that allows you to send nsstrings to the method with turns those into a pretty formatted view.