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PREFIX.PCH file-Determine the iOS system version

Source: Internet
Author: User
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Itcastweibo-prefix.pch

//
Prefix Header
//
The contents of this file is implicitly included at the beginning of every source file.
//

#import <Availability.h>

#ifndef __IPHONE_5_0
#warning "This project uses features only available in IOS SDK 5.0 and later."
#endif

#ifdef __objc__
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#define IOS7 ([[[Uidevice Currentdevice] systemversion]doublevalue] >= 7.0)
#endif


PREFIX.PCH file-Determine the iOS system version

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