我通过Crashlytics看到崩溃,并听到客户说应用程序在打开时崩溃了。
这缩小到迁移其中一个领域数据库的应用程序。遗憾的是,我无法重现这个问题,因为我无法理解我所看到的错误。
我有逻辑检查应用程序启动时检查并查看领域是否需要压缩。当这样做时,领域确定需要迁移它并命中迁移块。
config.migrationBlock = ^(RLMMigration *migration, uint64_t oldSchemaVersion) {
if (oldSchemaVersion < 17) {
[migration enumerateObjects:Event.className block:^(RLMObject *oldObject, RLMObject *newObject) {
NSString *className = [[oldObject[@"endDateTime"] objectSchema] className];
if ([className isEqualToString:@"DateObject"]) {
newObject[@"endDateTime"] = oldObject[@"endDateTime"][@"value"];
}
}];
}
};
由于我在执行先前的迁移时出现了错误,因此在决定迁移之前,我手动检查是否属性是否属于特定类型。 不幸的是,当这样做时,应该是RLMObject类型的oldObject似乎是根据Crashlytics的NSTaggedDate类型
[__NSTaggedDate objectSchema]: unrecognized selector sent to instance 0xe41bf592ee000000
Fatal Exception: NSInvalidArgumentException
0 CoreFoundation 0x186419d04 __exceptionPreprocess
1 libobjc.A.dylib 0x185668528 objc_exception_throw
2 CoreFoundation 0x1864271c8 __methodDescriptionForSelector
3 CoreFoundation 0x18641f6b0 ___forwarding___
4 CoreFoundation 0x18630501c _CF_forwarding_prep_0
5 MY_mobile_ios_common 0x10199c8c0 __34+[MYRealm getRealmConfigByName:]_block_invoke_2 (MYRealm.m:44)
6 Realm 0x1011b6598 -[RLMMigration enumerateObjects:block:] (RLMMigration.mm:99)
7 MY_mobile_ios_common 0x10199c830 __34+[MYRealm getRealmConfigByName:]_block_invoke (MYRealm.m:40)
8 Realm 0x1011b6ab4 -[RLMMigration execute:] (RLMMigration.mm:131)
9 Realm 0x1012297ec std::__1::__function::__func<+[RLMRealm realmWithConfiguration:error:]::$_1, std::__1::allocator<+[RLMRealm realmWithConfiguration:error:]::$_1>, void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>::operator()(std::__1::shared_ptr<realm::Realm>&&, std::__1::shared_ptr<realm::Realm>&&, realm::Schema&) (RLMRealm.mm:410)
10 Realm 0x10124fa90 std::__1::__function::__func<realm::Realm::update_schema(realm::Schema, unsigned long long, std::__1::function<void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>, std::__1::function<void (std::__1::shared_ptr<realm::Realm>)>, bool)::$_2, std::__1::allocator<realm::Realm::update_schema(realm::Schema, unsigned long long, std::__1::function<void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>, std::__1::function<void (std::__1::shared_ptr<realm::Realm>)>, bool)::$_2>, void ()>::operator()() (memory:4625)
11 Realm 0x101181f64 realm::ObjectStore::apply_schema_changes(realm::Group&, unsigned long long, realm::Schema&, unsigned long long, realm::SchemaMode, std::__1::vector<realm::SchemaChange, std::__1::allocator<realm::SchemaChange> > const&, std::__1::function<void ()>) (object_store.cpp:753)
12 Realm 0x10124bbb8 realm::Realm::update_schema(realm::Schema, unsigned long long, std::__1::function<void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>, std::__1::function<void (std::__1::shared_ptr<realm::Realm>)>, bool) (functional:1860)
13 Realm 0x101226a10 +[RLMRealm realmWithConfiguration:error:] (functional:1860)
14 MY_mobile_ios_common 0x10199cba0 +[MYRealm mainRealmCompact] (MYRealm.m:137)
15 MY App 0x1002b49dc -[AppDelegate compactRealmIfNeeded] (AppDelegate.m:808)
16 MY App 0x1002af940 -[AppDelegate application:didFinishLaunchingWithOptions:] (AppDelegate.m:48)
对于我在这里做错了什么的任何想法,我只是删除领域数据库并强迫用户重新开始重新加载数据。
产品名称:Mac OS X. 产品版本:10.12.6 BuildVersion:16G1036
/Applications/Xcode.app/Contents/Developer Xcode 9.1 构建版本9B55
的/ usr / local / bin中/荚 1.3.1 境界(2.10.2) 领域(= 2.10.2)
/斌/庆典 GNU bash,版本3.2.57(1)-release(x86_64-apple-darwin16)
(此处未使用)
的/ usr / local / bin中/ GIT中 git版本2.12.2
答案 0 :(得分:0)
崩溃日志告诉您,您对[oldObject[@"endDateTime"] objectSchema]
的来电看到oldObject[@"endDateTime"]
评估为NSDate
,而-objectSchema
没有回复endDateTime
。如果-objectSchema
属性可以是不同类型,具体取决于您要更新的模式版本,则需要在对象发送int64_t *id;
int *sz;
void setupUnionFind(int numNodes)
{
id = (int64_t *)malloc(numNodes*sizeof(int64_t));
sz = (int *)malloc(numNodes*sizeof(int));
for (int64_t i = 0; i < numNodes; i++)
{
id[i] = i;
sz[i] = 0;
}
}
之前对该对象进行进一步检查。