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我的方案: 我有公用數據庫中某個記錄類型的記錄列表。當某人按下按鈕時,我只想顯示「示例」鍵中包含值「1」的記錄。任何想法如何做到這一點,而CKRecords陣列正在創建?這是我目前如何構建陣列:按鍵值過濾CKQuery
- (void)queryCloudKit
{
CKQuery *query = [[CKQuery alloc] initWithRecordType:@"NewArticle"
predicate:[NSPredicate predicateWithValue:YES]];
query.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"Date" ascending:NO]];
[self.publicDatabase performQuery:query
inZoneWithID:nil
completionHandler:^(NSArray *results, NSError *error) {
if (!error) {
// CK convenience methods completion
// arent executed on the callers thread.
// more info: http://openradar.appspot.com/radar?id=5534800471392256
@synchronized(self){
self.results = [results mutableCopy];
// make sure it executes on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[self.collectionView reloadData];
});
}
}
else {
NSLog(@"FETCH ERROR: %@", error);
}
}];
}
謝謝!