Cannot create an NSPersistentStoreCoordinator with a nil model 问题解决
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项目中使用到coredata,由于创建时没有选择coredata,只好自己手动添加,
手动添加的方式就是,加个.xcdatamodel文件之后从模板中拷贝代码。
拷贝代码后遇到了 “Cannot create an NSPersistentStoreCoordinator with a nil model ”的问题。
原因在于modelURL 没能成功载入.xcdatamodel文件,
调查后将NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@“****” withExtension:@"momd”];
中的momd 改为mom,问题解决
网上搜索发现中文的相关问题的帖子不多,这里就记一下与人方便与己方便。
代码如下:
- (NSManagedObjectModel *)managedObjectModel {
// The managed object model for the application. It is a fatal error for the application not to be able to find and load its model.
if (_managedObjectModel != nil) {
return _managedObjectModel;
}
NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@“****” withExtension:@"mom"];
_managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];
return _managedObjectModel;
}
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