Core Data Failing on saveToURL on UIManagedDocument
我正在尝试设置核心数据,但是当我在
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | @property (nonatomic, strong) UIManagedDocument *currentUserDatabase; @synthesize currentUserDatabase = _currentUserDatabase; - (void)setCurrentUserDatabase:(UIManagedDocument *)currentUserDatabase { _currentUserDatabase = currentUserDatabase; [self useDocument]; } - (void)isUserLoggedIn { if (!self.currentUserDatabase) { NSURL *url = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentationDirectory inDomains:NSUserDomainMask] lastObject]; url = [url URLByAppendingPathComponent:@"Current User Database"]; self.currentUserDatabase = [[UIManagedDocument alloc] initWithFileURL:url]; } } - (void)useDocument { if (![[NSFileManager defaultManager] fileExistsAtPath:[self.currentUserDatabase.fileURL path]]) { [self.currentUserDatabase saveToURL:self.currentUserDatabase.fileURL forSaveOperation:UIDocumentSaveForCreating completionHandler:^(BOOL success) { if (success) { NSLog(@"create success"); } else { NSLog(@"create failed"); } //[self getCurrentUser]; }]; } else if (self.currentUserDatabase.documentState == UIDocumentStateClosed) { [self.currentUserDatabase openWithCompletionHandler:^(BOOL success) { //[self getCurrentUser]; }]; } else if (self.currentUserDatabase.documentState == UIDocumentStateNormal) { //[self getCurrentUser]; } } |
疼痛减轻了,我真的必须开始逐字阅读我的密码!我使用的是