添加钥匙串文件KeychainAccessGroups.plist，然后新建Array, 新建String，填写要名称之后，在iOS8测试运行是没有问题的，但是在iOS10下运行提示如下错误
The executable was signed with invalid entitlements.
The entitlements specified in your application’s Code Signing Entitlements file do not match those specified in your provisioning profile. (0xE8008016).
如果把工程设置里的Code_Sign_Entitlements给去掉的话，可以运行，但是肯定是访问不了Keychain。搞了一整天，终于研究出了解决方法
解决方法：选择工程－>Capabilities->Keychain Sharing开启，这时会自动生成一个entitlements的文件，打开这个文件可以看到Keychain Access Groups里有一个值是$(AppIdentifierPrefix)younrame.testproject。我们在代码修改KeychainItemWrapper里accessGroup的值$(AppIdentifierPrefix)younrame.testproject，现在有一个疑问AppIdentifierPrefix的值是什么呢？这是开发者ID的前缀，但是具体是什么值我们并不知道，可以通过代码来获取。如下：
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- (NSString *)GetAppIdentifierPrefix { NSDictionary *query = [NSDictionary dictionaryWithObjectsAndKeys: kSecClassGenericPassword, kSecClass, @"bundleSeedID", kSecAttrAccount, @"", kSecAttrService, (id)kCFBooleanTrue, kSecReturnAttributes, nil nil]; CFDictionaryRef result = nil; OSStatus status = SecItemCopyMatching((CFDictionaryRef)query, (CFTypeRef *)&result); if (status == errSecItemNotFound) status = SecItemAdd((CFDictionaryRef)query, (CFTypeRef *)&result); if (status != errSecSuccess) return nil; NSString *accessGroup = [(NSDictionary *)result objectForKey:kSecAttrAccessGroup]; NSArray *components = [accessGroup componentsSeparatedByString:@"."]; NSString *strAppIdentifierPrefix = [[components objectEnumerator] nextObject]; CFRelease(result); return strAppIdentifierPrefix; } |
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