I'm trying to create a tweak for iOS, but when I'm going to compile the tweak, I get this error:
"initializer element is not a compile-time constant".
//Sound path
NSString *soundPath = [[NSBundle bundleWithPath:#"/Library/Application Support/joselito/"] pathForResource:#"joselito" ofType:#"caf"];
NSURL *soundURL = [[NSURL alloc] initFileURLWithPath:soundPath];
Related
I am trying to access a core data model stored in another view controller. Currently, I have a few strings that i combine into one and save to the clipboard. But, when I paste the text, it shows NULL on the places where the three imported core data entries are supposed to be. What have I done wrong? Here is some code:
NSString *namevalue;
NSString *versionvalue;
NSString *companyvalue;
namevalue = [self.device valueForKey:#"name"];
versionvalue = [self.device valueForKey:#"version"];
companyvalue = [self.device valueForKey:#"company"];
NSString *shareString = [NSString stringWithFormat:#"I have performed %# minutes of %# %#",namevalue, versionvalue, companyvalue];
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
[pasteboard setString:shareString];
This extremely simple task was apparantly very hard...
NSDate *date;
date = [someMethod here];
//I've checked with debugger that the method returns an object of type NSDate.
//The description of date at this point is: "2012-02-02 19:42:00 +0000"
NSDateFormatter *dateFormat;
[dateFormat setDateFormat:#"dd-MM-yy hh:mm"];
NSString *dateString = [dateFormat stringFromDate:date];
dateString is just NIL
Does anyone know what's wrong?
Edit: What i really want to achieve is simply:
NSString *receivedDate = #"2012-02-02T20:42:00+01:00";
NSString *fixedDate = [do some magic]
//value of fixedDate is now: "02-02-12 20:42"
As Anna said you need to allocate an instance of NSDateFormatter because all you get is a NULL ptr, which just ignores the messages setDateFormat and stringFromDate, leaving you with NULL.
But also your format is for hours is incorrect. Refer to Date Formatter reference
This works for me:
NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease];
[df setDateFormat:##"dd-MM-yy HH:mm"];
NSString *dateString = [df stringFromDate:date];
I have a JSON feed coming into my app, one of the fields is a combined date & time string which I need to split into discrete date and time strings for display in a table cell. An example of input from the JSON is:
2012-01-18 14:18:00.
I'm getting a bit confused with the date formatter, and clearly I'm not doing it right - I've tried a number of tutorials but most just seem to show how to format a date.
I've tried something a little like this to get just the time:
NSDictionary *rowData = [self.raceData objectAtIndex:[indexPath row]];
NSDateFormatter *dateFormat = [[[NSDateFormatter alloc] init] autorelease];
[dateFormat setDateFormat:#"h:mma"];
NSDate *raceDate = [dateFormat dateFromString:[rowData valueForKey:#"race_time"]];
NSString *raceTime = [dateFormat stringFromDate:raceDate];
but on output raceTime is just null.
Any help appreciated.
maybe the format should be more like
[dateFormatter setDateFormat:#"yyyy-MM-dd 'at' HH:mm"];
have a look at http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/DataFormatting/Articles/dfDateFormatting10_4.html
might clear things up abit
Right, I have this working - it's probably a bit messy but here's what I did:
NSDictionary *rowData = [self.raceData objectAtIndex:[indexPath row]];
NSDateFormatter *dateFormat = [[[NSDateFormatter alloc] init] autorelease];
[dateFormat setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSDate* raceDate = nil;
NSError* dateError = nil;
NSRange dateRange = NSMakeRange(0, [[rowData valueForKey:#"race_time"] length]);
[dateFormat getObjectValue:&raceDate forString:[rowData valueForKey:#"race_time"] range:&dateRange error:&dateError];
[dateFormat setDateFormat:#"HH.mm"];
NSString *raceTime = [dateFormat stringFromDate:raceDate];
I can now output raceTime as a standalone time. I had to use getObjectValue:forString:range:error: to parse the original string to a date before changing the formatting and parsing it again.
As I'm using this in a table I suspect I'll need to use a static formatter so it doesn't slow everything down - if anyone can give a best practice on doing that I'd appreciate it.
If you are sure that the input string format wouldn't change – you might use something similar to:
NSString *date = nil;
NSString *time = nil;
NSDictionary *rowData = [self.raceData objectAtIndex:[indexPath row]];
NSString *raceTime = [rowData valueForKey:#"race_time"];
NSArray *dateParts = [raceTime componentsSeparatedByString:#" "];
if ([dateParts count] == 2) {
date = [dateParts objectAtIndex:0];
time = [dateParts objectAtIndex:1];
}
So I have a long string that has text like:
src="http://antibride.com/wp-content/uploads/2011/06/AttendantsA6.1.11.jpg" alt="" width="197" height="229"
and I want to chop out the value for that src attribute only, I mean that link only for the image.
How can i do it on Objective-C?
Since it is iOS 4.0, you can use NSRegularExpression.
NSString * myString = #" src=\"http://antibride.com/wp-content/uploads/2011/06/AttendantsA6.1.11.jpg\" alt=\"\" width=\"197\" height=\"229\"";
NSRegularExpression * expression = [NSRegularExpression regularExpressionWithPattern:#"(?<=src=\").+?(?=\")"
options:0
error:nil];
NSTextCheckingResult * result = [expression firstMatchInString:myString
options:0
range:NSMakeRange(0, [myString length])];
NSString * link = [myString substringWithRange:result.range];
NSLog(#"Link = %#", link);
You can use enumerateMatchesInString:options:range:usingBlock: method to get all such links available.
My current code is
NSNumberFormatter *f = [[[NSNumberFormatter alloc] init] autorelease];
[f setNumberStyle:NSNumberFormatterCurrencyStyle];
[f setCurrencySymbol:NSLocalizedString(#"CURRENCY", #"Get Currency")];
NSString * stringCurrecy = [f stringFromNumber:(-70.00)];
I'm using NSLog to check the string currency and it's printing "($ 70.00)".
I changed "(", ")" symbol. How can I achieve this:
( $ 70.00 ) -> - $70.00 or $ -70.00
You have to set the negative format.
Add this line:
[f setNegativeFormat:#"-¤#,##0.00"];
but maybe you just want to set the locale with [f setLocale:] instead of setting every format option on your own.
(and next time post code that does compile.)
I have a NSNumber category that does this:
#implementation NSNumber (Formatter)
- (NSString *)currencyStringValue
{
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.locale = [NSLocale currentLocale];
formatter.numberStyle = NSNumberFormatterCurrencyStyle;
formatter.negativePrefix = [NSString stringWithFormat:#"- %#", formatter.currencySymbol];
formatter.negativeSuffix = #"";
return [formatter stringFromNumber:self];
}
#end
Setting negativeFormat to "-" almost worked for me, but it was dropping off the currency symbol. At least for en_US locale, this fits my needs:
NSLocale *US = [NSLocale localeWithLocaleIdentifier:#"en_US"];
NSNumberFormatter *currencyFormatter = [[NSNumberFormatter alloc] init];
[currencyFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
[currencyFormatter setCurrencyCode:currencyCode];
[currencyFormatter setLocale:priceLocale];
//manually add - prefix to positive format...
NSString *negFormat = [NSString stringWithFormat:#"-%#",currencyFormatter.positiveFormat];
[currencyFormatter setNegativeFormat:negFormat];
I'm not sure whether this is appropriate for all locales, but it works for en_US.