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Showing posts from July, 2012

Check part of String is present in NSString

Below is code snippet to check whether part of string is present in a provided NSString  NSString *myString = @"This is an APPLE";   if ([ myString   rangeOfString : @"APPLE" ]. location != NSNotFound )    {         NSLog(@"Found");    }    else    {         NSLog(@"Not Found");    }

Find URL from NSString

If you want to fetch a URL from a String: NSString *StringContainingURL = @"You can click  http://objectivecwithsuraj.blogspot.in/ "; NSDataDetector *Detector = [ NSDataDetector dataDetectorWithTypes : NSTextCheckingTypeLink error : nil ]; NSArray *matches = [Detector matchesInString: StringContainingURL  options:0 range:NSMakeRange(0, [StringContainingURL  length])];         for (NSTextCheckingResult *match in matches)         {             if ([match resultType] == NSTextCheckingTypeLink)             {                 NSURL *url = [match URL];                 NSLog(@"URL : %@",url);               }         }     Output of the log is: URL :  http://objectivecwithsuraj.blogspot.in/

Detect Touch on UILabel

In one situation i want to detect touch on my Label, so i want to share the code : - (void)viewDidLoad {     [super viewDidLoad];     UITapGestureRecognizer *taplabelGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(gestureTap)];     UILabel *label = @"Suraj Mirajkar";     [label setFrame: CGRectMake(5o, 50, 100, 80)];     [self.view addSubview: label];     label .userInteractionEnabled = YES;     [label  addGestureRecognizer:taplabel Gesture ];     [taplabel Gesture  release ]; } -(void) gestureTap {    NSLog("Hey, you detected touch on Label"); }

Remove part of string between two strings

In below sample i have removed string between two angular brackets i.e. between < & > I want the strings between the angular brackets so, -(void) FetchString {     NSString   * descriptionString = @"<hi this is> Suraj <and this is my> blog";     NSString   *outputString        =  [self  removeNodesFromXMLString:  descriptionString   ];     NSLog(@" outputString is :-  %@", outputString); } -(NSString *) removeNodesFromXMLString: (NSString *) descriptionString {     NSMutableString *resultString = [descriptionString mutableCopy];         NSRegularExpression *regex = [NSRegularExpression                                           regularExpressionWithPattern:@"\\<.+?\\>"                                   options:NSRegularExpressionCaseInsensitive                                   error:NULL];         [regex replaceMatchesInString:resultString                           options:0           

MultiLine UILabel

In many cases we need a label with multi line.  For doing this you need to set 2 properties : 1. Number of Lines - 0, it means any number of lines. 2. Line break Mode - WordWrap CGSize labelsize; UILabel *TextLabel = [[UILabel alloc] init]; [TextLabel setNumberOfLines:0]; [TextLabel setBackgroundColor:[UIColor clearColor]]; NSString *text=@"yourtextString"; [TextLabel setFont:[UIFont fontWithName:@"Helvetica"size:14]]; labelsize=[text sizeWithFont:TextLabel.font constrainedToSize:CGSizeMake(268, 2000.0) lineBreakMode:UILineBreakModeWordWrap]; TextLabel.frame=CGRectMake(10, 24, 268, labelsize.height); [cell.contentView addSubview:TextLabel]; [TextLabel release];