An Objective-C class with useful macros and functions

Objective-C Code Snippets .h

//
//  DZUtility.h
//  Utility
//
//  Created by Darren Zheng on 13-4-20.
//  Copyright (c) 2013年 Darren Zheng. All rights reserved.
//

#import <Foundation/Foundation.h>


//////////////////////////////////////////////////////////////////
// Debug/Release
//////////////////////////////////////////////////////////////////

#ifdef DEBUG
// Debug Mode
//...


#else
// Release Mode
//...

// Clean NSLog
#define NSLog(...) {};

#endif

//////////////////////////////////////////////////////////////////
// Simulator/Device
//////////////////////////////////////////////////////////////////

#if TARGET_OS_IPHONE
//iPhone Device
#endif

#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#endif

//////////////////////////////////////////////////////////////////
// ARC/no ARC
//////////////////////////////////////////////////////////////////

#if __has_feature(objc_arc)
//compiling with ARC
#else
// compiling without ARC
#endif

//////////////////////////////////////////////////////////////////
// Abbreviation
//////////////////////////////////////////////////////////////////

#define UserDefaults        [NSUserDefaults standardUserDefaults]
#define SharedApplication   [UIApplication sharedApplication]
#define MainBundle          [NSBundle mainBundle]
#define MainScreen          [UIScreen mainScreen]

//////////////////////////////////////////////////////////////////
// UI
//////////////////////////////////////////////////////////////////

#define ScreenWidth         [[UIScreen mainScreen] bounds].size.width
#define ScreenHeight        [[UIScreen mainScreen] bounds].size.height

//////////////////////////////////////////////////////////////////
// System
//////////////////////////////////////////////////////////////////

#define SystemVersion ([[[UIDevice currentDevice] systemVersion] floatValue])

#define IsRetina ([[UIScreen mainScreen] scale]==2)
#define IsiPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define IsiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
#define IsAfterIOS4 ([[[UIDevice currentDevice] systemVersion] intValue]>4)
#define IsAfterIOS5 ([[[UIDevice currentDevice] systemVersion] intValue]>5)
#define IsAfterIOS6 ([[[UIDevice currentDevice] systemVersion] intValue]>6)

#define AppName [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleName"];
//////////////////////////////////////////////////////////////////
// CGRect
//////////////////////////////////////////////////////////////////

#define SetX(v, x)               v.frame = CGRectMake(x, v.frame.origin.y, v.frame.size.width, v.frame.size.height)
#define SetY(v, y)               v.frame = CGRectMake(v.frame.origin.x, y, v.frame.size.width, v.frame.size.height)
#define SetWidth(v, w)           v.frame = CGRectMake(v.frame.origin.x, v.frame.origin.y, w, v.frame.size.height)
#define SetHeight(v, h)          v.frame = CGRectMake(v.frame.origin.x, v.frame.origin.y, v.frame.size.width, h)
#define SetOrigin(v, x, y)       v.frame = CGRectMake(x, y, v.frame.size.width, v.frame.size.height)
#define SetSize(v, w, h)         v.frame = CGRectMake(v.frame.origin.x, v.frame.origin.y, w, h)
#define SetFrame(v, x, y, w, h)  v.frame = CGRectMake(x, y, w, h)
#define AddX(v, offset)          v.frame = CGRectMake(v.frame.origin.x + offset, v.frame.origin.y, v.frame.size.width, v.frame.size.height)
#define AddY(v, offset)          v.frame = CGRectMake(v.frame.origin.x, v.frame.origin.y + offset, v.frame.size.width, v.frame.size.height)

#define X(v)                     v.frame.origin.x
#define Y(v)                     v.frame.origin.y
#define Width(v)                 v.frame.size.width
#define Height(v)                v.frame.size.height
#define Origin(v)                v.frame.origin
#define Size(v)                  v.frame.size

//////////////////////////////////////////////////////////////////
// Color
//////////////////////////////////////////////////////////////////

#define RGB(r, g, b)        [UIColor colorWithRed:r/255.0 green:g/255.0 blue:b/255.0 alpha:1.0]
#define RGBA(r, g, b, a)    [UIColor colorWithRed:r/255.0 green:g/255.0 blue:b/255.0 alpha:a]

//////////////////////////////////////////////////////////////////
// Format
//////////////////////////////////////////////////////////////////


@interface DZUtility : NSObject

void dail(NSString *strNum);
void openURL(NSString *strURL);
BOOL canOpenURL(NSString *strURL);
void mailTo(NSString *strMailAddr);
void showNetworkActivityIndicator(BOOL bShow);
void ignoreTouch(BOOL bIgnore);
NSString *documentsDirectory();

@end

Objective-C Code Snippets .m

//
//  DZUtility.m
//  Utility
//
//  Created by Darren Zheng on 13-4-20.
//  Copyright (c) 2013年 Darren Zheng. All rights reserved.
//

#import "DZUtility.h"

@implementation DZUtility

void dail(NSString *strNum)
{
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"tel://%@", strNum]]];
}

void openURL(NSString *strURL)
{
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:strURL]];
}

BOOL canOpenURL(NSString *strURL)
{
    return [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:strURL]];
}

void mailTo(NSString *strMailAddr)
{
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"mailto://%@", strMailAddr]]];
}

void showNetworkActivityIndicator(BOOL bShow)
{
    [UIApplication sharedApplication].networkActivityIndicatorVisible = bShow;
}

void ignoreTouch(BOOL bIgnore)
{
    if(bIgnore)
    {
        [[UIApplication sharedApplication] beginIgnoringInteractionEvents];
    }
    else
    {
        [[UIApplication sharedApplication] endIgnoringInteractionEvents];
    }
}

NSString *documentsDirectory()
{
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    return documentsDirectory;
}


@end