RLMResults：allObjects崩溃（iOS Objective-C）

Question

我有一个写在Objective-C上的老项目。 需要迁移到Realm。

我从RLMObject创建了几个对象/类继承。 当我仅使用一种主要对象类型（ ConnectionRealm ）来获取对象时-工作正常，但是如果我添加（仅添加，不包括，不使用）来投影两个或多个其他类（从RLMObject继承），例如FloorRealm类，APP在[ConnectionRealm allObjects]上崩溃，没有任何错误。

另外ConnectionRealm包含RLMArray的FloorRealm 。 应用仍然崩溃。 （这几天无法解决和理解。）谢谢。

连接型号：

#import <Foundation/Foundation.h>
#import <Realm/Realm.h>

#import "FloorRealm.h"

@interface ConnectionRealm : RLMObject

@property int connectionID;

@property NSString *name;

@property NSString *localIPAddress;
@property NSString *localPort;

@property NSString *remoteIPAddress;
@property NSString *remotePort;

@property NSString *userName;
@property NSString *password;

@property NSString *deviceID;

@property RLMArray <FloorRealm *> *floors;

- (instancetype)initWith:(NSString *)name
                 localIP:(NSString *)localIPAddress
               localPort:(NSString *)lPort
                remoteIP:(NSString *)remoteIPAddress
              remotePort:(NSString *)rPort
                userName:(NSString *)userName
                password:(NSString *)password
                deviceID:(NSString *)deviceID;
@end

#import "ConnectionRealm.h"

@implementation ConnectionRealm

- (instancetype)initWith:(NSString *)name
                 localIP:(NSString *)localIPAddress
               localPort:(NSString *)lPort
                remoteIP:(NSString *)remoteIPAddress
              remotePort:(NSString *)rPort
                userName:(NSString *)userName
                password:(NSString *)password
                deviceID:(NSString *)deviceID {

    if (self = [super init]) {

        self.connectionID = [self incrementID];

        self.name = name;

        self.localIPAddress = localIPAddress;
        self.localPort = lPort;

        self.remoteIPAddress = remoteIPAddress;
        self.remotePort = rPort;

        self.userName = userName;
        self.password = password;

        self.deviceID = deviceID;
    }

    return self;
}

+ (NSString *)primaryKey { return @"connectionID"; }

- (int)incrementID {

    RLMResults *objects = [ConnectionRealm allObjects];
    return self.connectionID = [[objects maxOfProperty:@"connectionID"] intValue] + 1;
}

@end

FloorModel：

#import <Realm/Realm.h>


@interface FloorRealm : RLMObject

@property int floorID;
@property NSInteger floorNumber;
@property NSString *floorName;

- (instancetype)initWith:(NSInteger)floorNumber floorName:(NSString *)name;

@end
RLM_ARRAY_TYPE(FloorRealm)

#import "FloorRealm.h"

@implementation FloorRealm

- (instancetype)initWith:(NSInteger)floorNumber floorName:(NSString *)name {

    if (self = [super init]) {

        self.floorID = [self incrementID];

        self.floorNumber = floorNumber;
        self.floorName = name;
    }

    return self;
}

+ (NSString *)primaryKey { return @"floorID"; }

- (int)incrementID {

    RLMResults *objects = [FloorRealm allObjects];
    return self.floorID = [[objects maxOfProperty:@"floorID"] intValue] + 1;
}

@end

Answer 1

[解决了]

1. #includes之后，需要将RLM_ARRAY_TYPE(FloorRealm)放在.h中的ConnectionRealm中。 但是在官方文档中又写了一个。
2. 另外： RLMArray <FloorRealm *><FloorRealm> *floors; 而不是@property RLMArray <FloorRealm *> *floors;

我使用相同的模型创建了测试项目，并植入了所有错误。 奇怪，但在原始项目Xcode中未显示此错误。