├── KeychainIDFA.xcodeproj
    ├── project.pbxproj
    └── project.xcworkspace
    │   └── contents.xcworkspacedata
├── KeychainIDFA
    ├── AppDelegate.h
    ├── AppDelegate.m
    ├── Base.lproj
    │   ├── LaunchScreen.xib
    │   └── Main.storyboard
    ├── Images.xcassets
    │   └── AppIcon.appiconset
    │   │   └── Contents.json
    ├── Info.plist
    ├── KeychainIDFA
    │   ├── KeychainHelper.h
    │   ├── KeychainHelper.m
    │   ├── KeychainIDFA.h
    │   └── KeychainIDFA.m
    ├── ViewController.h
    ├── ViewController.m
    └── main.m
└── README.md


/KeychainIDFA.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
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 46 | 
 47 | /* Begin PBXGroup section */
 48 | 		994A97A41A42769200EEA677 = {
 49 | 			isa = PBXGroup;
 50 | 			children = (
 51 | 				994A97AF1A42769200EEA677 /* KeychainIDFA */,
 52 | 				994A97AE1A42769200EEA677 /* Products */,
 53 | 			);
 54 | 			sourceTree = "<group>";
 55 | 		};
 56 | 		994A97AE1A42769200EEA677 /* Products */ = {
 57 | 			isa = PBXGroup;
 58 | 			children = (
 59 | 				994A97AD1A42769200EEA677 /* KeychainIDFA.app */,
 60 | 			);
 61 | 			name = Products;
 62 | 			sourceTree = "<group>";
 63 | 		};
 64 | 		994A97AF1A42769200EEA677 /* KeychainIDFA */ = {
 65 | 			isa = PBXGroup;
 66 | 			children = (
 67 | 				994A97D61A4276ED00EEA677 /* KeychainIDFA */,
 68 | 				994A97B41A42769200EEA677 /* AppDelegate.h */,
 69 | 				994A97B51A42769200EEA677 /* AppDelegate.m */,
 70 | 				994A97B71A42769200EEA677 /* ViewController.h */,
 71 | 				994A97B81A42769200EEA677 /* ViewController.m */,
 72 | 				994A97BA1A42769200EEA677 /* Main.storyboard */,
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 74 | 				994A97BF1A42769200EEA677 /* LaunchScreen.xib */,
 75 | 				994A97B01A42769200EEA677 /* Supporting Files */,
 76 | 			);
 77 | 			path = KeychainIDFA;
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 80 | 		994A97B01A42769200EEA677 /* Supporting Files */ = {
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 84 | 				994A97B21A42769200EEA677 /* main.m */,
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 86 | 			name = "Supporting Files";
 87 | 			sourceTree = "<group>";
 88 | 		};
 89 | 		994A97D61A4276ED00EEA677 /* KeychainIDFA */ = {
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 95 | 				994A97DB1A42806900EEA677 /* KeychainIDFA.m */,
 96 | 			);
 97 | 			path = KeychainIDFA;
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101 | 
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103 | 		994A97AC1A42769200EEA677 /* KeychainIDFA */ = {
104 | 			isa = PBXNativeTarget;
105 | 			buildConfigurationList = 994A97D01A42769200EEA677 /* Build configuration list for PBXNativeTarget "KeychainIDFA" */;
106 | 			buildPhases = (
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108 | 				994A97AA1A42769200EEA677 /* Frameworks */,
109 | 				994A97AB1A42769200EEA677 /* Resources */,
110 | 			);
111 | 			buildRules = (
112 | 			);
113 | 			dependencies = (
114 | 			);
115 | 			name = KeychainIDFA;
116 | 			productName = KeychainIDFA;
117 | 			productReference = 994A97AD1A42769200EEA677 /* KeychainIDFA.app */;
118 | 			productType = "com.apple.product-type.application";
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123 | 		994A97A51A42769200EEA677 /* Project object */ = {
124 | 			isa = PBXProject;
125 | 			attributes = {
126 | 				LastUpgradeCheck = 0610;
127 | 				ORGANIZATIONNAME = Qixin;
128 | 				TargetAttributes = {
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130 | 						CreatedOnToolsVersion = 6.1.1;
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133 | 			};
134 | 			buildConfigurationList = 994A97A81A42769200EEA677 /* Build configuration list for PBXProject "KeychainIDFA" */;
135 | 			compatibilityVersion = "Xcode 3.2";
136 | 			developmentRegion = English;
137 | 			hasScannedForEncodings = 0;
138 | 			knownRegions = (
139 | 				en,
140 | 				Base,
141 | 			);
142 | 			mainGroup = 994A97A41A42769200EEA677;
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144 | 			projectDirPath = "";
145 | 			projectRoot = "";
146 | 			targets = (
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231 | 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
232 | 				GCC_WARN_UNUSED_FUNCTION = YES;
233 | 				GCC_WARN_UNUSED_VARIABLE = YES;
234 | 				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
235 | 				MTL_ENABLE_DEBUG_INFO = YES;
236 | 				ONLY_ACTIVE_ARCH = YES;
237 | 				SDKROOT = iphoneos;
238 | 			};
239 | 			name = Debug;
240 | 		};
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246 | 				CLANG_CXX_LIBRARY = "libc++";
247 | 				CLANG_ENABLE_MODULES = YES;
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262 | 				GCC_C_LANGUAGE_STANDARD = gnu99;
263 | 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
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271 | 				SDKROOT = iphoneos;
272 | 				VALIDATE_PRODUCT = YES;
273 | 			};
274 | 			name = Release;
275 | 		};
276 | 		994A97D11A42769200EEA677 /* Debug */ = {
277 | 			isa = XCBuildConfiguration;
278 | 			buildSettings = {
279 | 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
280 | 				INFOPLIST_FILE = KeychainIDFA/Info.plist;
281 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
282 | 				PRODUCT_NAME = "$(TARGET_NAME)";
283 | 			};
284 | 			name = Debug;
285 | 		};
286 | 		994A97D21A42769200EEA677 /* Release */ = {
287 | 			isa = XCBuildConfiguration;
288 | 			buildSettings = {
289 | 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
290 | 				INFOPLIST_FILE = KeychainIDFA/Info.plist;
291 | 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
292 | 				PRODUCT_NAME = "$(TARGET_NAME)";
293 | 			};
294 | 			name = Release;
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297 | 
298 | /* Begin XCConfigurationList section */
299 | 		994A97A81A42769200EEA677 /* Build configuration list for PBXProject "KeychainIDFA" */ = {
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302 | 				994A97CE1A42769200EEA677 /* Debug */,
303 | 				994A97CF1A42769200EEA677 /* Release */,
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305 | 			defaultConfigurationIsVisible = 0;
306 | 			defaultConfigurationName = Release;
307 | 		};
308 | 		994A97D01A42769200EEA677 /* Build configuration list for PBXNativeTarget "KeychainIDFA" */ = {
309 | 			isa = XCConfigurationList;
310 | 			buildConfigurations = (
311 | 				994A97D11A42769200EEA677 /* Debug */,
312 | 				994A97D21A42769200EEA677 /* Release */,
313 | 			);
314 | 			defaultConfigurationIsVisible = 0;
315 | 		};
316 | /* End XCConfigurationList section */
317 | 	};
318 | 	rootObject = 994A97A51A42769200EEA677 /* Project object */;
319 | }
320 | 


--------------------------------------------------------------------------------
/KeychainIDFA.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:KeychainIDFA.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/KeychainIDFA/AppDelegate.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.h
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface AppDelegate : UIResponder <UIApplicationDelegate>
12 | 
13 | @property (strong, nonatomic) UIWindow *window;
14 | 
15 | 
16 | @end
17 | 
18 | 


--------------------------------------------------------------------------------
/KeychainIDFA/AppDelegate.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.m
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import "AppDelegate.h"
10 | 
11 | @interface AppDelegate ()
12 | 
13 | @end
14 | 
15 | @implementation AppDelegate
16 | 
17 | 
18 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
19 |     // Override point for customization after application launch.
20 |     return YES;
21 | }
22 | 
23 | - (void)applicationWillResignActive:(UIApplication *)application {
24 |     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
25 |     // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
26 | }
27 | 
28 | - (void)applicationDidEnterBackground:(UIApplication *)application {
29 |     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
30 |     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
31 | }
32 | 
33 | - (void)applicationWillEnterForeground:(UIApplication *)application {
34 |     // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
35 | }
36 | 
37 | - (void)applicationDidBecomeActive:(UIApplication *)application {
38 |     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
39 | }
40 | 
41 | - (void)applicationWillTerminate:(UIApplication *)application {
42 |     // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
43 | }
44 | 
45 | @end
46 | 


--------------------------------------------------------------------------------
/KeychainIDFA/Base.lproj/LaunchScreen.xib:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6214" systemVersion="14A314h" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6207"/>
 5 |         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
 6 |     </dependencies>
 7 |     <objects>
 8 |         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
 9 |         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
10 |         <view contentMode="scaleToFill" id="iN0-l3-epB">
11 |             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
12 |             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
13 |             <subviews>
14 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2014年 Qixin. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
15 |                     <rect key="frame" x="20" y="439" width="441" height="21"/>
16 |                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
17 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
18 |                     <nil key="highlightedColor"/>
19 |                 </label>
20 |                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="KeychainIDFA" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
21 |                     <rect key="frame" x="20" y="140" width="441" height="43"/>
22 |                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
23 |                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
24 |                     <nil key="highlightedColor"/>
25 |                 </label>
26 |             </subviews>
27 |             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
28 |             <constraints>
29 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
30 |                 <constraint firstAttribute="centerX" secondItem="kId-c2-rCX" secondAttribute="centerX" id="Koa-jz-hwk"/>
31 |                 <constraint firstAttribute="bottom" secondItem="8ie-xW-0ye" secondAttribute="bottom" constant="20" id="Kzo-t9-V3l"/>
32 |                 <constraint firstItem="8ie-xW-0ye" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="MfP-vx-nX0"/>
33 |                 <constraint firstAttribute="centerX" secondItem="8ie-xW-0ye" secondAttribute="centerX" id="ZEH-qu-HZ9"/>
34 |                 <constraint firstItem="kId-c2-rCX" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="fvb-Df-36g"/>
35 |             </constraints>
36 |             <nil key="simulatedStatusBarMetrics"/>
37 |             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
38 |             <point key="canvasLocation" x="548" y="455"/>
39 |         </view>
40 |     </objects>
41 | </document>
42 | 


--------------------------------------------------------------------------------
/KeychainIDFA/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="vXZ-lx-hvc">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204"/>
 5 |     </dependencies>
 6 |     <scenes>
 7 |         <!--View Controller-->
 8 |         <scene sceneID="ufC-wZ-h7g">
 9 |             <objects>
10 |                 <viewController id="vXZ-lx-hvc" customClass="ViewController" customModuleProvider="" sceneMemberID="viewController">
11 |                     <layoutGuides>
12 |                         <viewControllerLayoutGuide type="top" id="jyV-Pf-zRb"/>
13 |                         <viewControllerLayoutGuide type="bottom" id="2fi-mo-0CV"/>
14 |                     </layoutGuides>
15 |                     <view key="view" contentMode="scaleToFill" id="kh9-bI-dsS">
16 |                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
17 |                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
18 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
19 |                     </view>
20 |                 </viewController>
21 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="x5A-6p-PRh" sceneMemberID="firstResponder"/>
22 |             </objects>
23 |         </scene>
24 |     </scenes>
25 | </document>
26 | 


--------------------------------------------------------------------------------
/KeychainIDFA/Images.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "29x29",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "29x29",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "40x40",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "40x40",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "60x60",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "60x60",
31 |       "scale" : "3x"
32 |     }
33 |   ],
34 |   "info" : {
35 |     "version" : 1,
36 |     "author" : "xcode"
37 |   }
38 | }


--------------------------------------------------------------------------------
/KeychainIDFA/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>com.qixin.$(PRODUCT_NAME:rfc1034identifier)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleSignature</key>
20 | 	<string>????</string>
21 | 	<key>CFBundleVersion</key>
22 | 	<string>1</string>
23 | 	<key>LSRequiresIPhoneOS</key>
24 | 	<true/>
25 | 	<key>UILaunchStoryboardName</key>
26 | 	<string>LaunchScreen</string>
27 | 	<key>UIMainStoryboardFile</key>
28 | 	<string>Main</string>
29 | 	<key>UIRequiredDeviceCapabilities</key>
30 | 	<array>
31 | 		<string>armv7</string>
32 | 	</array>
33 | 	<key>UISupportedInterfaceOrientations</key>
34 | 	<array>
35 | 		<string>UIInterfaceOrientationPortrait</string>
36 | 	</array>
37 | </dict>
38 | </plist>
39 | 


--------------------------------------------------------------------------------
/KeychainIDFA/KeychainIDFA/KeychainHelper.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  KeychainHelper.h
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface KeychainHelper : NSObject
12 | + (void)save:(NSString *)service data:(id)data;
13 | + (id)load:(NSString *)service;
14 | + (void)delete:(NSString *)service;
15 | @end
16 | 


--------------------------------------------------------------------------------
/KeychainIDFA/KeychainIDFA/KeychainHelper.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  KeychainHelper.m
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import "KeychainHelper.h"
10 | #import <Security/Security.h>
11 | 
12 | @implementation KeychainHelper
13 | 
14 | + (NSMutableDictionary *)getKeychainQuery:(NSString *)service
15 | {
16 |     return [NSMutableDictionary dictionaryWithObjectsAndKeys:
17 |             (__bridge id)(kSecClassGenericPassword),kSecClass,
18 |             service, kSecAttrService,
19 |             service, kSecAttrAccount,
20 |             kSecAttrAccessibleAfterFirstUnlock,kSecAttrAccessible,nil];
21 | }
22 | 
23 | + (void)save:(NSString *)service data:(id)data
24 | {
25 |     NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
26 |     SecItemDelete((__bridge CFDictionaryRef)(keychainQuery));
27 |     [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data]
28 |                       forKey:(__bridge id<NSCopying>)(kSecValueData)];
29 |     SecItemAdd((__bridge CFDictionaryRef)(keychainQuery), NULL);
30 | }
31 | 
32 | + (id)load:(NSString *)service
33 | {
34 |     id ret = nil;
35 |     NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
36 |     [keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge id<NSCopying>)(kSecReturnData)];
37 |     [keychainQuery setObject:(__bridge id)(kSecMatchLimitOne) forKey:(__bridge id<NSCopying>)(kSecMatchLimit)];
38 |     
39 |     CFTypeRef result = NULL;
40 |     if (SecItemCopyMatching((__bridge_retained CFDictionaryRef)keychainQuery, &result) == noErr)
41 |     {
42 |         ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData*)result];
43 |     }
44 |     return ret;
45 | }
46 | 
47 | + (void)delete:(NSString *)service
48 | {
49 |     NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
50 |     SecItemDelete((__bridge CFDictionaryRef)(keychainQuery));
51 | }
52 | 
53 | @end
54 | 


--------------------------------------------------------------------------------
/KeychainIDFA/KeychainIDFA/KeychainIDFA.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  KeychainIDFA.h
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import <Foundation/Foundation.h>
10 | 
11 | //设置你idfa的Keychain标示,该标示相当于key,而你的IDFA是value
12 | #define IDFA_STRING @"com.qixin.test.idfa"
13 | 
14 | @interface KeychainIDFA : NSObject
15 | 
16 | //获取IDFA
17 | + (NSString*)IDFA;
18 | 
19 | //删除keychain的IDFA(一般不需要)
20 | + (void)deleteIDFA;
21 | 
22 | @end
23 | 


--------------------------------------------------------------------------------
/KeychainIDFA/KeychainIDFA/KeychainIDFA.m:
--------------------------------------------------------------------------------
  1 | //
  2 | //  KeychainIDFA.m
  3 | //  KeychainIDFA
  4 | //
  5 | //  Created by Qixin on 14/12/18.
  6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
  7 | //
  8 | 
  9 | #import "KeychainIDFA.h"
 10 | #import "KeychainHelper.h"
 11 | @import AdSupport;
 12 | 
 13 | #define kIsStringValid(text) (text && text!=NULL && text.length>0)
 14 | 
 15 | 
 16 | 
 17 | @implementation KeychainIDFA
 18 | 
 19 | 
 20 | + (void)deleteIDFA
 21 | {
 22 |     [KeychainHelper delete:IDFA_STRING];
 23 | }
 24 | 
 25 | + (NSString*)IDFA
 26 | {
 27 |     //0.读取keychain的缓存
 28 |     NSString *deviceID = [KeychainIDFA getIdfaString];
 29 |     if (kIsStringValid(deviceID))
 30 |     {
 31 |         return deviceID;
 32 |     }
 33 |     else
 34 |     {
 35 |         //1.取IDFA,可能会取不到,如用户关闭IDFA
 36 |         if ([ASIdentifierManager sharedManager].advertisingTrackingEnabled)
 37 |         {
 38 |             deviceID = [[[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString] lowercaseString];
 39 |             [KeychainIDFA setIdfaString:deviceID];
 40 |             return deviceID;
 41 |         }
 42 |         else
 43 |         {
 44 |             //2.如果取不到,就生成UUID,当成IDFA
 45 |             deviceID = [KeychainIDFA getUUID];
 46 |             [KeychainIDFA setIdfaString:deviceID];
 47 |             if (kIsStringValid(deviceID))
 48 |             {
 49 |                 return deviceID;
 50 |             }
 51 |         }
 52 |     }
 53 |     //3.再取不到尼玛我也没办法了,你牛B.
 54 |     return nil;
 55 | }
 56 | 
 57 | 
 58 | 
 59 | 
 60 | 
 61 | 
 62 | 
 63 | 
 64 | 
 65 | 
 66 | 
 67 | 
 68 | 
 69 | 
 70 | 
 71 | 
 72 | 
 73 | 
 74 | 
 75 | 
 76 | 
 77 | 
 78 | 
 79 | 
 80 | 
 81 | 
 82 | 
 83 | 
 84 | #pragma mark - Keychain
 85 | + (NSString*)getIdfaString
 86 | {
 87 |     NSString *idfaStr = [KeychainHelper load:IDFA_STRING];
 88 |     if (kIsStringValid(idfaStr))
 89 |     {
 90 |         return idfaStr;
 91 |     }
 92 |     else
 93 |     {
 94 |         return nil;
 95 |     }
 96 | }
 97 | 
 98 | + (BOOL)setIdfaString:(NSString *)secValue
 99 | {
100 |     if (kIsStringValid(secValue))
101 |     {
102 |         [KeychainHelper save:IDFA_STRING data:secValue];
103 |         return YES;
104 |     }
105 |     else
106 |     {
107 |         return NO;
108 |     }
109 | }
110 | 
111 | 
112 | 
113 | #pragma mark - UUID
114 | + (NSString*)getUUID
115 | {
116 |     CFUUIDRef uuid_ref = CFUUIDCreate(kCFAllocatorDefault);
117 |     CFStringRef uuid_string_ref= CFUUIDCreateString(kCFAllocatorDefault, uuid_ref);
118 |     
119 |     CFRelease(uuid_ref);
120 |     NSString *uuid = [NSString stringWithString:(__bridge NSString*)uuid_string_ref];
121 |     if (!kIsStringValid(uuid))
122 |     {
123 |         uuid = @"";
124 |     }
125 |     CFRelease(uuid_string_ref);
126 |     return [uuid lowercaseString];
127 | }
128 | 
129 | 
130 | @end
131 | 


--------------------------------------------------------------------------------
/KeychainIDFA/ViewController.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.h
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface ViewController : UIViewController
12 | 
13 | 
14 | @end
15 | 
16 | 


--------------------------------------------------------------------------------
/KeychainIDFA/ViewController.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.m
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import "ViewController.h"
10 | #import "KeychainIDFA.h"
11 | 
12 | //第一次:2d54d261-7bae-4014-8b81-3f9ff969b6e1
13 | //第二次:2d54d261-7bae-4014-8b81-3f9ff969b6e1
14 | //卸载app启动:2d54d261-7bae-4014-8b81-3f9ff969b6e1
15 | 
16 | //delete之后:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
17 | //delete之后2次:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
18 | //delete之后卸载:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
19 | 
20 | @interface ViewController ()
21 | 
22 | @end
23 | 
24 | @implementation ViewController
25 | 
26 | - (void)viewDidLoad
27 | {
28 |     [super viewDidLoad];
29 |     //[KeychainIDFA deleteIDFA];
30 |     NSLog(@"%@",[KeychainIDFA IDFA]);
31 | }
32 | 
33 | @end
34 | 


--------------------------------------------------------------------------------
/KeychainIDFA/main.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  main.m
 3 | //  KeychainIDFA
 4 | //
 5 | //  Created by Qixin on 14/12/18.
 6 | //  Copyright (c) 2014年 Qixin. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | #import "AppDelegate.h"
11 | 
12 | int main(int argc, char * argv[]) {
13 |     @autoreleasepool {
14 |         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
15 |     }
16 | }
17 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | KeychainIDFA
 2 | ============
 3 | 
 4 | 获取idfa标示当设备唯一识别,并保存到keychain中.基本不变.除非刷机.
 5 | 
 6 | 
 7 | ### 测试数据
 8 | 
 9 |     //第一次:2d54d261-7bae-4014-8b81-3f9ff969b6e1
10 |     //第二次:2d54d261-7bae-4014-8b81-3f9ff969b6e1
11 |     //卸载app启动:2d54d261-7bae-4014-8b81-3f9ff969b6e1
12 |     
13 |     //delete之后:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
14 |     //delete之后2次:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
15 |     //delete之后卸载:2b8d8afc-7f87-4c9c-ac73-ec64a89fc1a8
16 |     
17 |     
18 | ### 使用方式
19 |     
20 |     //设置你idfa的Keychain标示,该标示相当于key,而你的IDFA是value
21 |     //在KeychainIDFA.h中定义
22 |     #define IDFA_STRING @"com.qixin.test.idfa"
23 |     
24 |     #import "KeychainIDFA.h"
25 | 
26 |     [KeychainIDFA IDFA]//获取IDFA
27 |     
28 |     [KeychainIDFA deleteIDFA]//删除Keychain中IDFA(一般不用)
29 | 


--------------------------------------------------------------------------------