Try this: if let scene = SCNScene(named: “Models.scnassets/CDMTEST1″){ sceneView.scene = scene } you need to pass a value not a optional since SCNScene(named: “Models.scnassets/CDMTEST1”) is optional since may return nil since it fails. 1 solved Value of optional type must be unwrapped to a value of type [duplicate]
2 things to do: Configure the slider so that its min and max values are equal to the min and max zoom scale of your scroll view Use [imageScrollView setZoomScale:sender.value]; to update the zoom when the slider is changed Also, check the superview that your slider is added to. It shouldn’t be added to the … Read more
To make apps (mobile apps, I think you mean) for different OS’s(I think you mean the different OS’s on each phone),(assumption: that you’re coding it from scratch) you learn a programming language first, then proceed to learn how to make apps for a particular OS. Typically, you purchase a book (look online for good recommendations) … Read more
Google is your friend. Something like this ? https://www.sinch.com/tutorials/minichat-ios-messaging-app/ https://github.com/relatedcode/RealtimeChat 1 solved How to create a simple chat App in iOS 9? [closed]
iOS development must be done under OS X. The proper way to do this is to buy Mac hardware. You can build a Hackintosh if you’d rather, but you cannot install OS X in a virtual machine. What you could do, if you want to target multiple platforms (Windows Phone, iOS, Android) is to use … Read more
Declare one instance of type IndexPath and maintain the cell status is it selected or not with it. Now use this array within cellForItemAt indexPath and didSelectItemAt indexPath like this. var selectedIndexPaths = IndexPath() func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier: “Cell”, for: indexPath) as! PlaceCollectionViewCell //Your code … Read more
If the values are stored as NSNumber objects, you can use the collection operators. For example: NSArray *array = @[@1234.56, @2345.67]; NSNumber *sum = [array valueForKeyPath:@”@sum.self”]; If you want to format that sum nicely using NSNumberFormatter: NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; formatter.numberStyle = NSNumberFormatterDecimalStyle; NSString *result = [formatter stringFromNumber:sum]; NSLog(@”result = %@”, result); If … Read more
Use this NSString *str=@”{\”Data\”: [{\”ID\”:\”1\”,\”Name\”:\”Raj\”},{\”ID\”:\”2\”,\”Name\”:\”Rajneesh\”}]}”; NSMutableDictionary *dict=[NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:nil]; NSMutableArray *dataArr=[dict valueForKey:@”Data”]; for (NSDictionary *userData in dataArr) { NSLog(@”Id:%@ Name:%@”,[userData valueForKey:@”ID”],[userData valueForKey:@”Name”]); } 0 solved How to convert data string to json object and string in iOS?
use this code: if ( [oldSavedArray count]>0 ){ btnResumeGame.hidden=NO; } else{ btnResumeGame.hidden=YES; } solved How can i check the array has object or not [closed]
You have to convert your UserModel to [String : Any] type in order to save it on firebase. Try this: func convertUserModelToDictionary(user: UserModel) -> [String : Any] { let userData = [ “name” : user.name, // change these according to you model “email”: user.email, “user_id”: user.userId ] return userData } You can use this function … Read more
Best way is to use a UITableViewController. With that you can implement all the cells easily and efficiency. Then drag and drop an imageView on top of the tableView in the UITableViewController. You can place it right between the tableView and the Top to get what you want. solved How to build this layout in … Read more
Try to add in plist <key>NSContactsUsageDescription</key> <string>$(PRODUCT_NAME) contact use</string> In ios 10 permission changed for contact 4 solved My app crashes absolutly everytime it resume active from background on iOS10 [closed]
Your issue is with this line: NSURL *U1 =[NSURL URLWithString:[dict objectForKey:@”img”]]; The problem is caused by the fact that you assume: [dict objectForKey:@”img”] is returning an NSString when in fact it is returning an NSNumber representing a boolean value. You need to either figure out why the data in the dictionary is incorrect or you … Read more
You can use swift Dictionary [String: AnyObject] this way instead of NSMutableDictionary. var data = [[String: AnuObject]]() for i in 0..<questionArr.count { data.append([“QuestionID”: questionArr[i], “AnswerID”: answerArr[i]]) } let dic = [ “QuizId” : “23566656”, “StartTime” : “23:30”, “EndTime” : “23:45”, “data” : data ] print(dic) 20 solved how to make Dyanamic NSDictonary in Swift
Use a property observer: var counter = 1 { didSet { if counter == 3 { self.outsCounter++ } } } Whenever counter gets changed, didSet will be called. (Also note that the equality operator is ==. = is for assignment.) 0 solved Swift Xcode 6 baseball Counter