Code For NSPredicate in objective c(IOS)

    Add a new file(NSObject) in your working application and add following code first..

.h

-(id)initWithName:(NSString *) name;

-(NSString *)description;

.m

@synthesize strName;

-(id)initWithName:(NSString *) name

{

    self = [super init];

    if(self)

    {

        self.strName = [name copy];

        

        

    }

    return self;

}

-(NSString *)description

{

    return self.strName;

}

After that import this file in your desired view and add Following piece of code..

    Employee *emp = [[Employee alloc]initWithName:@"Amit"];

    Employee *emp1 = [[Employee alloc]initWithName:@"Sudheer"];

    Employee *emp3 = [[Employee alloc]initWithName:@"Kiran"];

    

    NSMutableArray *arr1  = [[NSMutableArray alloc]initWithObjects:emp,emp1,emp3 ,nil];

    

    

    NSPredicate *nsPred1 = [NSPredicate predicateWithFormat:@"strName == 'Kiran'"];

    NSPredicate *nsPred2 = [NSPredicate predicateWithFormat:@"strName.length <5"];

    NSPredicate *nsPred3 = [NSPredicate predicateWithFormat:@"strName BEGINSWITH[c] 'a'"];

    NSPredicate *nsPred4 = [NSPredicate predicateWithFormat:@"strName ENDSWITH[c] 'r'"];

    

    NSArray *arrFilterdArray1 = [arr1 filteredArrayUsingPredicate:nsPred1];

    NSArray *arrFilterdArray2 = [arr1 filteredArrayUsingPredicate:nsPred2];

    NSArray *arrFilterdArray3 = [arr1 filteredArrayUsingPredicate:nsPred3];

    NSArray *arrFilterdArray4 = [arr1 filteredArrayUsingPredicate:nsPred4];

    NSLog(@"%@",arrFilterdArray1);

    NSLog(@"%@",arrFilterdArray2);

    NSLog(@"%@",arrFilterdArray3);

    NSLog(@"%@",arrFilterdArray4);

Out Put

2013-05-15 11:50:26.918 StoryBoardApplication[390:207] (

    Kiran

)

2013-05-15 11:50:28.037 StoryBoardApplication[390:207] (

    Amit

)

2013-05-15 11:50:28.661 StoryBoardApplication[390:207] (

    Amit

)

2013-05-15 11:50:29.276 StoryBoardApplication[390:207] (

    Sudheer

)