RestKit 升级到 0.10.0 后崩溃

Question

我似乎能够很好地启动 restkit 并使用传统的 loadobjectsatresourcepath:delegate: 方法加载对象。但是，当我引入 block:^{} 时，restkit 每次都会崩溃。

[[RKObjectManager sharedManager] loadObjectsAtResourcePath:@"/api/v1/places" delegate:self block:^(RKObjectLoader* loader) {
    loader.objectMapping = [[RKObjectManager sharedManager].mappingProvider objectMappingForClass:[Place class]];
}];

我在日志中得到了这个：

2012-05-12 19:07:32.266 App - [RKObjectManagerloadObjectsAtResourcePath:delegate:block:]: unrecognized selector sent to instance 0x3aa2e0
2012-05-12 19:07:32.268 App - *** Terminating app due to uncaught exception 'NSInvalidArgumentException', 
reason: '-[RKObjectManager   loadObjectsAtResourcePath:delegate:block:]: unrecognized selector sent to instance 0x3aa2e0'

关于如何解决此问题的任何想法？谢谢！

Answer 1

异常告诉您问题的确切原因：RKObjectManager 不响应 loadObjectsAtResourcePath:delegate:block:。快速浏览 API 文档会发现 the original method 在 0.10.0 中不再存在，并且似乎已被 loadObjectsAtResourcePath:usingBlock: 替换。

您应该能够通过使用新方法来避免异常：

[[RKObjectManager sharedManager] loadObjectsAtResourcePath:@"/api/v1/places" usingBlock:^(RKObjectLoader* loader) {
    loader.objectMapping = [[RKObjectManager sharedManager].mappingProvider objectMappingForClass:[Place class]];
}];