Create local notification in iOS

LocalNotification.h file :

#import <Foundation/Foundation.h>

@interface LocalNotification : NSObject

+ (LocalNotification*)standardLocalNotification;

- (void)scheduleAlert:(NSString*)alertBody;

- (void)scheduleAlert:(NSString*)alertBody fireDate:(NSDate*)fireDate;

@end

LocalNotification.m file :

#import <UIKit/UIKit.h>

#import "LocalNotification.h"

static LocalNotification*   localNotification = nil;

@interface LocalNotification(){

    UIApplication* application;

}

@end

@implementation LocalNotification

- (void)dealloc{

    [super dealloc];

}

- (instancetype)init{

    self = [super init];

    if (self) {

        application = [UIApplication sharedApplication];

    }

    return self;

}

+ (LocalNotification*)standardLocalNotification {

    @synchronized(self) {

        if(nil == localNotification) {

            localNotification = [LocalNotification alloc];

        }

    }

    return localNotification;

}

- (void)scheduleAlert:(NSString*)alertBody {

    [self scheduleAlert:alertBody fireDate:[[NSDate date] dateByAddingTimeInterval:1]];

}

- (void)scheduleAlert:(NSString*)alertBody fireDate:(NSDate*)fireDate{

    UILocalNotification* localNotification = [[UILocalNotification alloc] init];

    localNotification.fireDate = fireDate;

    localNotification.timeZone = [NSTimeZone systemTimeZone];

    localNotification.repeatInterval = 0;

    localNotification.soundName = UILocalNotificationDefaultSoundName;

    localNotification.alertBody = alertBody;

    [application scheduleLocalNotification:localNotification];

    [localNotification release];

}

@end