Objective Questions in >= Swift2.2 @iPhone - Set I

Q.81: Which method is used to invoke a method by timer after a 

          interval

        A. NSTimer.scheduledTimerWithTimeInterval(interval, 

            target: AnyClass, selector: Selector(“increaseTimer),  

           userInfo: Any?, repeats: Boolean)

        B. NSTimer.scheduledTimerWithTimeInterval(target:

            AnyClass, selector: Selector(“increaseTimer),  

           userInfo: Any?, repeats: Boolean)

        C. NSTimer.scheduledTimerWithTimeInterval(interval,  

            selector: Selector(“increaseTimer),  userInfo: Any?, 

            repeats: Boolean)

          D. None

Q.82: What is UITableViewDelegate

            A. is a protocol you implement on your class to 

                receive UITableView events. 

            B. is a protocol you implement to provide data for 

                your UITableView .

            C. Both

            D. None

Q.83: What is UITableViewDataSource 

            A. is a protocol you implement on your class to 

                receive UITableView events. 

            B. is a protocol you implement to provide data for 

                your UITableView .

            C. Both

            D. None

Q.84: Which function is used to add number of rows in 

          TableView

            A. func tableView(tableView: UITableView, 

                  numberOfRowsInSection section: Int)

{

                             return intValue;  //intValue means a valid integer

}

B. func tableView(tableView: UITableView, 

     numberOfRowsInSection  section: Int) -> Int

{

                             return intValue;  //intValue means a valid integer

}

          C. func tableView(tableView:  ,  numberOfRowsInSection

              section: Int) -> Int

{

                             return intValue;  //intValue means a valid integer

}

          D.  None

Q.85: Which function is used to customize cell  with data source

A. func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> Int

{

    return cell; //cell should be created by you 

}

B. func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: ) -> UITableViewCell

{

    return cell; //cell should be created by you 

}

C. func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath)

     -> UITableViewCell

{

    return cell; //cell should be created by you 

}

D.   None

Q.86: In Q.85 what is the significant of NSIndexPath

A.   index of Base row of table

B.    index of clicked row in table

C.    number of cells in Table

D.   None

Q.87: How to create cell using prototype cell

A.   let cell = UITableViewCell(style: 

                   UITableViewCellStyle.Default, 

                   reuseIdentifier: "prototypecell")

B.    let cell = UITableViewCell(

                       UITableViewCellStyle.Default, 

                   reuseIdentifier: " prototypecell ")

C.    let cell = UITableViewCell(style: 

                   UITableViewCellStyle.Default, 

                   reuseIdentifier: )

D.   None

Q.88: How user preferences can be stored in iPhone

          A. by using UserDefaults class

          B. by using NSUser class

          C. by using NSUserDefaults class

          D. None

Q.89: Which method is used to set the value with user 

          preferences

          A.  setObject(forKey : “ key name”)

          B.  setObject( “ Value  “ , forKey : “ key name”)

          C. setObject( “ Value  “ , “ key name”)

                D. None

            

            Q.90: Which method is used to retrieve the value for 

                      a key named name

                        A.  objectForKey()

                        B. objectForKey().name

                        C. objectForKey(“name”)

                        D. None

     Answers   A    A     B     B     C     B     A    C    B     C