I am new to xcode. I have one string variable and one text box. I want to get the strings from the text box to the string variable. How can I do this?
You can just get the text property of the text box (I assume you mean a UITextField).
NSString *myString = myTextField.text;
Related
I'm working on a swift project and have a Text Field. The user can input a string into this field. Currently if the user types too much then the string scrolls horizontally on the one line. How do I build a text field where once the first line is full it adds a line.
aaaaaaaaaaaaaaaaaaaaaaaaa
vs.
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
UITextField is one-line only.
You can replace your UITextField with UITextView in your storyboard. They are editable and selectable by default.
I am going to develop the iPhone app. But I got stuck with one place. I want to write some symbol on the label from the xib file.
The symbols are not on the keyboard but we can get it by the ASCII value.
e.g: the ACSII value for the character sign "mue" is 230 but how to print that symbol "mue" on the label that i dont know.
So please help me for that.
Thanks in advance.
Use whatever editor you like to produce that character, and open your xib in XCode and just copy/paste it in?
Use NSUTF8StringEncoding to encode your string.
For example,
NSString *str = [NSString stringWithUTF8String:"your string for encoding"];
[lblName setText:str];
Following function will also help :
- (NSString *) decodedString:(NSString *) originalString {
NSString *newString = [NSString stringWithUTF8String:[originalString cStringUsingEncoding:[NSString defaultCStringEncoding]]];
return newString;
}
I suggest to use above function.
Pressing Cmd+Ctrl+Space will open a special characters menu. Check if the desired symbol is present. If it isn't, click the gear icon, then select the desired category — add it to the list.
See screenshot below
I think you mean the character 'µ', yes?
If so, you can simply type it into the label by clicking "option" and "m" on your Macintosh keyboard, when you are editing the label in your XIB.
If you can use the unicode number instead, you can do it like this:
NSString *muString = [NSString stringWithFormat:#"%C", 0x03BC];
Write 0x then the unicode number.
Open the "Special Characters"-Panel and search for your character. You can find it at the bottom of the edit menu. There is a shortcut for it too, cmd+opt+t
Copy and paste your character from there to your UILabel.
and btw: option + m = µ
You can simply type into label by using 'Alt' key + 'm' key on key board, when you are editing the label in your XIB and rest of symbols, you can get easily using 'Alt' key and other keys. You can fix 'Alt' key and change other keys(one by one).
Is it possible to replace a word with emoticons?
For example
NSString *myString = #"I am sad of him"
now i want to check the word whether it contains the word "sad", if it has i want to replace that word with sad emoticons.
I am not sure how to have emoticons in the nsstring
Please let me know
yeah, you can do this using this:
myString = [NSString stringByReplacingOccurrencesOfString:#"sad" withString:#"\ue058"];
Check this link for emoji codes: (replace the &#x with \u though)
http://barrow.io/posts/iphone-emoji/
you can use NSAttributed String to show emotion icon but before that you have to search "sad" word in whole paragraph by using normal search method. :)
I am working on a math app and need to output exponents to the screen.
I've found that this code will work:
NSLog(#"x\u2070 x\u00B9 x\u00B2 x\u00B3 x\u2074 x\u2075 x\u2076 x\u2077 x\u2078 x\u2079");
it displays: x⁰ x¹ x² x³ x⁴ x⁵ x⁶ x⁷ x⁸ x⁹
This also works:
NSString *testString = #"8.33x10\u00B3";
NSLog(#"test string: %#", testString);
it displays: test string: 8.33x10³
Even setting it to a label displays correctly on the iPhone screen:
NSString *testString = #"8.33x10\u00B3";
Answer1Label.text = testString;
However, when I pull the string from a .plist that says "8.33x10\u00B3" and display it on the screen, it just shows up as "8.33x10\u00B3" instead of 8.33x10³
Is there an additional character I need to put in front of the \u00B3 to get it to recognize?
Thanks for your help!
The \uXXXX is converted into unicode at compile time, so you wouldn't expect that to be magically converted by reading a .plist.
Try opening the the plist file in Xcode in "text mode" (right click your plist file, Open As -> Plan Text File), then edit the desired string to contain the special characters by using text of the form:
⁰
rather than the usual \u2070 you've been using in-code. Then if you save your plist, close it, and open it again by double clicking, you'll see the usual plist editor view and it will contain your special characters.
Alternatively, consider using OS X's character viewer (aka character palette) to input the text directly into the plist editor in Xcode. More info.
I retrieve an NSString from a Property list and display it in a UILabel. The NSString already includes \n s, however the UILabel just displays them as text. How can I tell the UILabel to actually use the \n s as line breaks?
Everything you type into a plist in the plist editor is interpreted as plain text. Try it... put a ' into a field and right click -> view as "plain text" and you'll see it substitutes it for '. Therefore you can't put \n into a plist because it thinks you're just typing text and will treat it as such. Instead of putting \n into your plist use Alt+Enter to get your newline. If you view this as a text file now you'll see \ns printed and new lines acctually shown in the text file.
Now when you output it it won't display \n it will just give it a new line.
Plus, as has been mentioned UITextField is only one line anyway and you probably would benefit from using UITextView.
Well, first, you are going to need a string that you can modify. To accomplish that, you can simply do:
NSMutableString* correctedPath = [path mutableCopy];
At that point, you can use -insertString:atIndex: to insert any characters you need.
You're using the wrong class here.
UITextField doesn't (for all that I know) support multi-line input. For that, you will need a UITextView (it has editing enabled by default). It should interpret \n's without any problems. It also has a lineBreakMode property, if you want to make use of that.