地幔会自动将0和1转换为BOOL吗?

本文介绍了地幔会自动将0和1转换为BOOL吗?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

Mantle是否已将JSON中的int值0和1转换为Objective-C BOOL值?

Does Mantle already converts int values 0 and 1 in JSON to objective-C BOOL values?

我有一个模特:

@interface MyModel : MTLModel @property (nonatomic, readonly) BOOL isValid; @end

并且可以说JSON是:

And lets say JSON is:

{ is_valid: 0 } OR { is_valid: 1 }

我想知道Mantle是否会自动将is_valid转换为Objective-C BOOL值，我必须明确提及以下内容:

I want to know if Mantle would automatically convert is_valid into Objective-C BOOL value to do I have to explicity mention the following:

+ (NSValueTransformer)isValidJSONTransfermer { return [NSValueTransformer mtl_valueMappingTransformerWithDictionary:@{@(0) : @(NO), @(1) : @(YES)}]; }

推荐答案

是的，这已为您处理；您不需要使用映射转换器.

Yes, this is handled for you; you don't need to use the mapping transformer.

内部调用内部 setValue:forKey: 来设置值. 0或1将是NSNumber，而setValue:forKey:将使用NSNumber上的boolValue获取值，因为您的属性被声明为BOOL.

Mantle internally calls setValue:forKey: to set the value. The 0 or 1 will be an NSNumber, and setValue:forKey: will use the boolValue on NSNumber to get a value, as your property is declared as a BOOL.

标量和结构支持.