coreFoundation框架转换为foundation -->桥接

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// 姓名和电话

// 1.获取姓名取值:copy get

CFStringRef firstName = ABRecordCopyValue(person, kABPersonFirstNameProperty);

CFStringRef lastName = ABRecordCopyValue(person, kABPersonLastNameProperty);

// coreFoundation框架转换为foundation -->桥接

// 桥接方式一：手动管理内存

// NSString *firstNameStr = (__bridge NSString *)(firstName);

// NSString *lastNameStr = (__bridge NSString *)(lastName);

// NSLog(@"firstName: %@ lastName: %@",firstNameStr,lastNameStr);

// CFRelease(firstName);

// CFRelease(lastName);

// 桥接方式二: 2.1不需要手动管理内存

// NSString *firstNameStr = CFBridgingRelease(firstName);

// NSString *lastNameStr = CFBridgingRelease(lastName);

// NSLog(@"firstName: %@ lastName: %@",firstNameStr,lastNameStr);

// 2.2将对象的所有权转换

NSString *firstNameStr = (__bridge_transferNSString *)firstName;

NSString *lastNameStr = (__bridge_transferNSString *)lastName;

NSLog(@"firstName: %@ lastName: %@",firstNameStr,lastNameStr);

// 桥接方式三: Foundation 转换为CoreFoundation 不常用

// (__bridge_retained <#CF type#>)<#expression#>)

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