I have an nsarray with strings like this,
albumname/song42.mp3
albumname/song43.mp3 etc .
I want to remove the string "album name" and ".mp3" from the above array,and display it in a tableview as follows ,
song42
song43
then in the DidSelectRow ,i want to add the string
"http://www.domain.com/albumname/" and ".mp3" to the indepath.row element .
fo eg :
if user selects song42 in tableview ,then it must create a string like this "http://www.domain.com/albumname/song42.mp3"
How to do this ?
- [NSString stringByDeletingPathExtension] <--- This to remove
+ [NSString stringWithFormat:] <--- And this to recreate
EDIT My mistake, you first need to do this before you call the first method:
NSString *lastPath = [string lastPathComponent]; //song43.mp3
NSString *tableString = [lastPath stringByDeletingPathExtension]; //song43
You can use lastPathComponent and stringByDeletingPathExtension methods:
NSMutableArray *songs = [NSArray arrayWithCapacity:[sourceArray count]];
for (NSString *filename in sourceArray) {
[songs addObject:[[filename lastPathComponent] stringByDeletingPathExtension]];
}
use the String method componentsSeparatedByString first separate the strings using / and then . and discard what you don't need.
NSString *str="albumname/song42.mp3";
NSArray *mainStrArray = [str componentsSeparatedByString:#"/"];
NSArray remainingStrArray=[[mainStrArray objectAtIndex:1]componentsSeparatedByString:#"."];
NSString *result=[remainingStrArray objectAtIndex:0]; //here you have song42
You can use, as :
NSString *str = #"album name/song43.mp3";
str=[[str componentsSeparatedByString:#"/"][1]componentsSeparatedByString:#".mp3"][0];
NSLog(#"->%#",str); //song43
NSString *file = #"albumname/song42.mp3";
NSString *name = [[[[file componentsSeparatedByString:#"/"] objectAtIndex:1] componentsSeparatedByString:#"."] objectAtIndex:0];
Related
I have a string like this: "/Myapp/auth/hrHeadcount+ME+All IOU+Headcount+Grade" and I want to save only the "HeadCount" in another string. How can I do that?
NSString *srcStr = #"/Myapp/auth/hrHeadcount+ME+All IOU+Headcount+Grade";
NSString *dstStr = [[srcStr componentsSeparatedByString:#"+"] objectAtIndex:3];
If you are sure it will have same format then u can do the following
NSString *string1 = #"/Myapp/auth/hrHeadcount+ME+All IOU+Headcount+Grade";
NSArray *stringArray = [string1 componentsSeparatedByString:#"/"];
NSString *string2 = stringArray[3];
NSArray *finalArray = [string2 componentsSeparatedByString:#"+"];
NSString *finalString = finalArray[0];
final String will have the headCount u require
I have a NSDictionary and make a copy of NSDictionary:
NSDictionary *immutableDict = (NSDictionary *)json;
NSMutableDictionary *mutableDict = [immutableDict mutableCopy];
I want to convert this into a NSString selection category for then edit contain.
NSString * name = [mutableDict objectForKey:#"category"];
name = [name stringByAppendingString:[NSString stringWithFormat:#"mytexttoadd"]];
But when I want to change this NSString my app crash because the NSString is a NSCFArray ..
How can make this a NSString so I can edit it?
-(void)displayData:(NSString *)text{
NSLog(#"DATA SEND");
NSString *string1 = [NSString stringWithFormat:text];
NSString *separate = [string1 componentsSeparatedByString:#"B"];
separate is the one that gives issue? How do I properly do this? I'm trying to perform a string split.
componentsSeparatedByString: method returns NSArray not NSString, try that:
NSArray *seperate = [string1 componentsSeparatedByString:#"B"];
what is that?
NSString *string1 = [NSString stringWithFormat:text];
Right way
NSString *string1 = [NSString stringWithFormat:#"%#",text];
or
NSString *string1 = [NSString stringWithString:text];
and then Grag answer.
I have two UITextViews:
self.itemsTextView.text;
self.priceTextView.text;
I want to concatenate these two like so:
NSString *data = self.textView.text + self.itemsTextView.text;
I have tried using a colon, as suggested by this thread, but it doesn't work.
NSString *data = [self.textView.text : self.itemsTextView.text];
For concatenating you have several options :
Using stringWithFormat:
NSString *dataString =[NSString stringWithFormat:#"%#%#",self.textView.text, self.itemsTextView.text];
Using stringByAppendingString:
NSMutableString has appendString:
You may use
NSString * data = [NSString stringWithFormat:#"%#%#",self.textView.text,self.itemsTextView.text];
There are so many ways to do this. In addition to the stringWithFormat: approaches of the other answers you can do (where a and b are other strings):
NSString *c = [a stringByAppendingString:b];
or
NSMutableString *c = [a mutableCopy];
[c appendString b];
I've got a string that shows the stock amount using "-" as separators.
It's built up like this: localStock-wareHouseStock-supplierStock
Now I want to update the supplierStock at the end of the string, but as you can see in the code below it goes wrong when the original string returns more than a single-space value (such as 20).
Is there a way to remove all characters until the last "-" (or remove characters after the second "-")?
NSMutableString *string1 = [NSMutableString stringWithString: p1.colorStock];
NSLog(#"string1: %#",string1);
NSString *newString = [string1 substringToIndex:[string1 length]-2];
NSLog(#"newString: %#",newString);
NSString *colorStock = [NSString stringWithFormat:#"%#-%#",newString,p2.supplierStock];
NSLog(#"colorstock: %#",colorStock);
p1.colorStock = colorStock;
NSLog1
string1: 0-0-0
newString: 0-0
colorstock: 0-0-20
NSLog2
string1: 0-0-20
newString: 0-0-
colorstock: 0-0--20
EDIT: Got it working thanks to Srikar!
NSString *string1 = [NSString stringWithString: p1.colorStock];
NSLog(#"string1: %#",string1);
NSString *finalString = [string1 stringByReplacingOccurrencesOfString:[[string1 componentsSeparatedByString:#"-"] lastObject] withString:p2.supplierStock.stringValue];
NSLog(#"finalString: %#",finalString);
p1.colorStock = finalString;
Why not use componentsSeparatedByString followed by lastObject ?
NSString *supplierStock = [[string1 componentsSeparatedByString:#"-"] lastObject];
The above works if the "stock amount" is always in sets of 3's separated by a "-". Also since you always want supplierStock, lastObject is perfect for your needs.
Of course after splitting string1 with - you get a NSArray instance and you can access the individual components using objectAtIndex:index. So if you want localStock you can get by
NSString *localStock = [[string1 componentsSeparatedByString:#"-"] objectAtIndex:0];
I would suggest splitting the string into the 3 parts using [NSString componentsSeparatedByString:#"-"] and then building it back up again:
NSArray *components = [p1.colorStock componentsSeparatedByString:#"-"];
p1.colorStock = [NSString stringWithFormat:#"%#-%#-%#",
[components objectAtIndex:0],
[components objectAtIndex:1],
p2.supplierStock];
With a string that looks like
NSString *myString = #"Hello-World";
you can separate it with the componentsSeparatedByString: method of the NSString object as
NSArray *myWords = [myString componentsSeparatedByString:#"-"];
The myWords - array will then contain the two NSString objects Hello and World.
To access the strings:
NSString *theHelloString = [myWords objectAtIndex:0];
NSString *theWorldString = [myWords objectAtIndex:1];
Hope it helps!
None of these examples show how to do this if you are unaware of how many of these separator occurrences you're going to have in the original string.
Here's what I believe the correct the correct code should be for dismantling the original string and rebuilding it until you reach the final separator, regardless of how many separators it contains.
NSString *seperator = #" ";
NSString *everythingBeforeLastSeperator;
NSArray *stringComponents = [originalString componentsSeparatedByString:seperator];
if (stringComponents.count!=0) {
everythingBeforeLastSeperator = [stringComponents objectAtIndex:0];
for (int a = 1 ; a < (stringComponents.count - 1) ; a++) {
everythingBeforeLastSeperator = [NSString stringWithFormat:#"%#%#%#", everythingBeforeLastSeperator, seperator, [stringComponents objectAtIndex:a]];
}
}
return everythingBeforeLastSeperator;