Am having this nsstring
NSString * countryStr = #"6023117,159,en_US,Seychelles,SC,Seychelles,6023185,95,en_US,Kuwait,KW,Kuwait,6023182,172,en_US,Swaziland,SZ,Swaziland,6023185,157,en_US,Saudi Arabia,SA,Saudi Arabia,6023182,177,en_US,Tanzania,TZ,Tanzania,6023185,179,en_US,Togo,TG,Togo,6023185,87,en_US,Cote d'Ivoire,CI,Cote d'Ivoire";
now i want to display only the countries which are suffixed by "en_US".
can anybody tell me how to split that string to get the countries.
I did like this
NSError * error;
NSString* imageName = [[NSBundle mainBundle] pathForResource:#"CountryList" ofType:#"txt"];
NSString * countrStr = [NSString stringWithContentsOfFile:imageName encoding:NSStringEncodingConversionAllowLossy error:&error];
NSArray * dfd = [countrStr componentsSeparatedByString:#"en_US"];
for(int i=0;i<dfd.count;i++)
{
NSString * nama = [dfd objectAtIndex:1];
NSArray * djk = [nama componentsSeparatedByString:#","];
NSString * aksjd = [djk objectAtIndex:1];
}
You can do it like this;
NSString * countryStr = #"6023117,159,en_US,Seychelles,SC,Seychelles,6023185,95,en_US,Kuwait,KW,Kuwait,6023182,172,en_US,Swaziland,SZ,Swaziland,6023185,157,en_US,Saudi Arabia,SA,Saudi Arabia,6023182,177,en_US,Tanzania,TZ,Tanzania,6023185,179,en_US,Togo,TG,Togo,6023185,87,en_US,Cote d'Ivoire,CI,Cote d'Ivoire";
NSArray * arrData = [countryStr componentsSeparatedByString:#","];;//[countryStr componentsSeparatedByString:#"en_US"];
for(int i=0;i<arrData.count;i++)
{
NSString * str = [arrData objectAtIndex:i];
if ([str isEqualToString:#"en_US"] && i<arrData.count-1)
{
NSString* countryName = [arrData objectAtIndex:i+1];
NSLog(#"countryName %#", countryName);
}
}
But you should manage data in your file, loading from resource.
Best way to do it is
NSString *string = [NSString stringWithFormat: #"%#, %#, %#", var1, var2, var3];
Excuse the formatting/syntax errors. Typing this via iPhone. But if there is any errors, look up stringWithFormat: in iOS documents on the apple developer page for corrections.
Your string seems to have the following pattern:
A number,
An other number,
The country language code,
The name,
A short code,
An (other) name.
So what you can do is to use a loop like this:
for (int i = 0; i < dfd.count; i += 6) {
if ( dfd[i + 2] ) } // check the country code at index i + 2
// Do something
}
}
i have implemented a search bar that searching trough an array of countries(presented in a picker view), the problem is that the user need to type the full country name that it will find it and i want him to be able to type even one letter and it will show the first country that starts with that letter and if types another than it sorts even further etc etc.
Anyone have any ideas??
for(int x = 0; x < countryTable.count; x++){
NSString *countryName = [[countryTable objectAtIndex:x]objectForKey:#"name"];
if([searchedStr isEqualToString:countryName.lowercaseString]){
[self.picker selectRow:i inComponent:0 animated:YES];
flag.image = [UIImage imageNamed:[[countryTable objectAtIndex:i]objectForKey:#"flag"]];
}
}
There's a method on NSArray called filteredArrayUsingPredicate: and a method on NSString called hasPrefix:. Together they do what you need...
NSString *userInput = //... user input as lowercase string. don't call this countryName, its confusing
NSPredicate *p = [NSPredicate predicateWithBlock:^BOOL(id element, NSDictionary *bind) {
NSString countryName = [[element objectForKey:#"name"] lowercaseString];
return [countryName hasPrefix:userInput];
}];
NSArray *filteredCountries = [countryTable filteredArrayUsingPredicate:p];
If you're on iOS 8 or OS X Yosemite, you can do:
NSString *country = countryName.lowercaseString; //"england"
NSString *needle = #"engl";
if (![country containsString:needle]) {
NSLog(#"Country string does not contain part (or whole) of searched country");
} else {
NSLog(#"Found the country!");
}
Else, if on versions below iOS 8:
NSString *country = countryName.lowercaseString; //"england"
NSString *needle = #"engl";
if ([country rangeOfString:needle].location == NSNotFound) {
NSLog(#"Country string does not contain part (or whole) of searched country");
} else {
NSLog(#"Found the country!");
}
Lastly, just iterate through all possible countries and apply this to them all. There might exist more robust solutions out there (like danh's solution with some smaller modifications), but this is by far the easiest to start with.
Merging these two strings:
#"###.##"
#"123"
Should output:
#"1.23"
I have developed a solution for this, but I'm looking for a simpler way, Using a NSNumberFormater, or some other API that I might be missing in Apple's documentation.
Thank you!
-
The solution as is right now, that I'm trying to get rid of:
/**
* User inputs a pure, non fractional, numeric string (e.g 1234) We'll see how many fraction digits it needs and format accordingly (e.g. 1234 produces a string such as '12.34' for 2 fractional digits. 12 will produce '0.12'.)
*
* #return The converted numeric string in an instance of NSDecimalNumber
*/
- (NSDecimalNumber *)decimalNumberFromRateInput
{
if (_numericInput == nil ||
_numericInput.length == 0) {
_numericInput = #"0";
}
[self clearLeadingZeros];
if (self.formatter == nil) {
return nil;
}
if (self.formatter.maximumFractionDigits == 0) {
return [NSDecimalNumber decimalNumberWithString:_numericInput];
}
else if (_numericInput.length <= self.formatter.maximumFractionDigits) {
NSString *zeros = #"";
for (NSInteger i = _numericInput.length; i < self.formatter.maximumFractionDigits ; i++) {
zeros = [zeros stringByAppendingString:#"0"];
}
NSString *decimalString = [NSString stringWithFormat:#"0.%#%#",zeros,_numericInput];
return [NSDecimalNumber decimalNumberWithString:decimalString];
}
else {
NSString *decimalPart = [_numericInput substringToIndex: _numericInput.length - self.formatter.maximumFractionDigits];
NSString *fractionalPart = [_numericInput substringFromIndex:_numericInput.length - self.formatter.maximumFractionDigits];
NSString *decimalString = [NSString stringWithFormat:#"%#.%#", decimalPart, fractionalPart];
return [NSDecimalNumber decimalNumberWithString: decimalString];
}
}
If I understand your goal correctly, the solution should be much simpler:
float number = [originalString floatValue] / 100.0;
NSString *formattedString = [NSString stringWithFormat:#"%.2f", number];
I need a method to check if the [msg valueForKey:#"text"] contain the currentString and if it does it should be replace with the character * depending on the length of the word.
How can I do this? The code below is how far I've come:
NSDictionary *msg = [self.messages objectAtIndex:indexPath.row];
for (NSString *currentString in badwords)
{
if ([[msg valueForKey:#"text"]]) {
}
}
You can use the stringByReplacingOccurrencesOfString method:
NSString *newString = [oldString stringByReplacingOccurrencesOfString:currentString
withString:replacementString];
You would create the replacement string like this:
NSMutableString *replacementString = [[NSMutableString alloc] init];
for (int i = 0; i < currentString.length; i++)
{
[replacementString appendString:#"*"];
}
You should read the NSString class reference. There are a whole family of methods supporting this sort of thing. For your specific need, look at methods like rangeOfString: or stringByReplacingOccurrencesOfString:withString:
How about this:
NSDictionary *msg = [self.messages objectAtIndex:indexPath.row];
NSString *redactedString = [msg valueForKey:#"text"];
for (NSString *currentString in badwords)
redactedString = [redactedString stringByReplacingOccurrencesOfString:currentString
withString:#"*"];
NSLog(redactedString);
Adapted from #reecon.
I found an github project which helped to achieve this. I hope someone else can use this.
https://github.com/IslandOfDoom/IODProfanityFilter
I have a string Hello-World-Test, I want to split this string by the first dash only.
String 1:Hello
String 2:World-Test
What is the best way to do this? What I am doing right now is use componentsSeparatedByString, get the first object in the array and set it as String 1 then perform substring using the length of String 1 as the start index.
Thanks!
I added a category on NSString to split on the first occurrence of a given string. It may not be ideal to return the results in an array, but otherwise it seems fine. It just uses the NSString method rangeOfString:, which takes an NSString(B) and returns an NSRange showing where that string(B) is located.
#interface NSString (Split)
- (NSArray *)stringsBySplittingOnString:(NSString *)splitString;
#end
#implementation NSString (Split)
- (NSArray *)stringsBySplittingOnString:(NSString *)splitString
{
NSRange range = [self rangeOfString:splitString];
if (range.location == NSNotFound) {
return nil;
} else {
NSLog(#"%li",range.location);
NSLog(#"%li",range.length);
NSString *string1 = [self substringToIndex:range.location];
NSString *string2 = [self substringFromIndex:range.location+range.length];
NSLog(#"String1 = %#",string1);
NSLog(#"String2 = %#",string2);
return #[string1, string2];
}
}
#end
Use rangeOfString to find if split string exits and then use substringWithRange to create new string on bases of NSRange.
For Example :
NSString *strMain = #"Hello-World-Test";
NSRange match = [strMain rangeOfString:#"-"];
if(match.location != NSNotFound)
{
NSString *str1 = [strMain substringWithRange: NSMakeRange (0, match.location)];
NSLog(#"%#",str1);
NSString *str2 = [strMain substringWithRange: NSMakeRange (match.location+match.length,(strMain.length-match.location)-match.length)];
NSLog(#"%#",str2);
}