I am new in Swift and the problem is I am getting data from webservices and then that data loads in tableview. In this process, websevices are working too slow it is taking 10 to 15 seconds because I have to download all images available in the webservices and add those in an array. This is necessary to download images but it also takes time, when all the data is loading at that time I am not able to click on back button and go to the previous page. But the code written by me is not working properly it takes more time to go back, it doesn't work instantly. Many times, I tap on the back button for two times, and so, it takes me to the second navigation (that means debug is not working instantly at back button ibAction).
Here is my code
Back Button
@IBAction func click_back(sender: AnyObject)
{
//self.btn_Back.enabled = false;
if let navController = self.navigationController {
navController.popViewControllerAnimated(true)
}else
{
//self.dismissViewControllerAnimated(true, completion: nil)
}
}
Calling API Like this
let qualityOfServiceClass = QOS_CLASS_BACKGROUND
let backgroundQueue = dispatch_get_global_queue(qualityOfServiceClass, 0)
dispatch_async(backgroundQueue, {
print("This is run on the background queue")
self.tag_getReplay = 0
dispatch_async(dispatch_get_main_queue()) {
self.ShowLoader()
}
let manager = AFHTTPRequestOperationManager()
manager.GET(
"\(WebServicesUrl.GlobalConstants.SiteUrl)get_jives.php?user_id=\(self.delegate.appd_userid)&at=\(self.delegate.token)&app_id=\(WebServicesUrl.AppID)&jive_id=\(self.getjive_id)",
parameters: nil,
success: { (operation: AFHTTPRequestOperation!,
responseObject: AnyObject!) in
do {
if let jsonResult:NSArray = responseObject as? NSArray
{
self.errorCheck = 0
let jsonArray = jsonResult as AnyObject as! NSMutableArray
self.arydata = NSMutableArray(array: jsonArray)
self.check_image_load = false;
self.check_image_load_height = false;
self.foundChannelForReplay = (self.arydata.objectAtIndex(0).valueForKey("channel_names") as? NSArray)!
let checkValue:Bool = self.checkcellPresent();
if(checkValue == true)
{
//print(checkValue)
let newIndex = NSIndexPath(forItem:3, inSection:0)
let threeTableViewCell = self.tbl_tranding.dequeueReusableCellWithIdentifier("cellthree", forIndexPath: newIndex) as! Cell_TJ_me_three
for view in threeTableViewCell.subviews {
if let label = view as? UIButton {
//print(label)
//print("btn text == \(label.titleLabel?.text)")
label.removeFromSuperview()
}
if let TheImage = view as? UIImageView {
TheImage.removeFromSuperview()
}
}
}
let getReplayString = self.arydata.objectAtIndex(0).valueForKey("replies") as? String
//print(arydata.objectAtIndex(0))
self.ReplayToid = self.arydata.objectAtIndex(0).valueForKey("reply_to_id") as? String
if(self.ReplayToid == "0")
{// not comment then check rejive
self.ReplayToid = self.arydata.objectAtIndex(0).valueForKey("rejive_to_id") as? String
}
self.OrignalUserid = self.arydata.objectAtIndex(0).valueForKey("original_user_id") as? String
self.JiveUserid = self.arydata.objectAtIndex(0).valueForKey("user_id") as? String
let intValue : Int = NSString(string: getReplayString!).integerValue
let getImageArray:NSArray = (self.arydata.objectAtIndex(0).valueForKey("images") as? NSArray)!
self.imageArray = NSMutableArray()
for var i = 0 ; i < getImageArray.count ; i++
{
let getimage:String = getImageArray.objectAtIndex(i) as! String
if let urlGet = NSURL(string: getimage) {
if getimage.hasSuffix(".jpg") || getimage.hasSuffix(".png") || getimage.hasSuffix(".jpeg")
{
let data: NSData? = NSData(contentsOfURL: urlGet)
if (data != nil)
{
var TheDownimage:UIImage!
TheDownimage = UIImage(data: data!)
self.imageArray.addObject(TheDownimage)
}else
{
let TheDownimage:UIImage = UIImage(named:"img_error.png")!
self.imageArray.addObject(TheDownimage)
}
}else
{
let TheDownimage:UIImage = UIImage(named:"img_error.png")!
self.imageArray.addObject(TheDownimage)
}
}else
{
let TheDownimage:UIImage = UIImage(named:"img_error.png")!
self.imageArray.addObject(TheDownimage)
}
}
if(intValue > 0)
{
// dispatch_async(dispatch_get_main_queue()) {
self.Resent_Older = "1"
self.connection_getReplay()
//}
}else
{
self.Resent_Older = "0"
// dispatch_async(dispatch_get_main_queue()) {
self.tbl_tranding.separatorStyle = UITableViewCellSeparatorStyle.SingleLine
self.tbl_tranding.reloadData();
self.tbl_tranding.delegate=self;
self.tbl_tranding.dataSource=self;
self.hideLoader()
// }
}
if(self.arydata.count > 0)
{
let geo_accuracy : String = self.arydata.objectAtIndex(0).valueForKey("geo_accuracy") as! String;
// print("geo_accuracy==\(geo_accuracy)")
if(geo_accuracy != "0")
{self.setmaplatLong()
}else
{
self.innermapView.hidden = true
}
}
}else
{
dispatch_async(dispatch_get_main_queue()) {
self.hideLoader()
}
do {
if let jsonResult: Dictionary = responseObject as? Dictionary<String, AnyObject!>
{
if ((jsonResult["Warning"]) != nil)
{
//print("YES")
}else if ((jsonResult["Error"]) != nil)
{
//print("YES")
}
else if ((jsonResult["System"]) != nil)
{
let error_by_System:String = jsonResult["System"] as! String
let actionSheetController: UIAlertController = UIAlertController(title: "Warning", message:error_by_System, preferredStyle: .Alert)
self.presentViewController(actionSheetController, animated: true, completion: nil)
let cancelAction: UIAlertAction = UIAlertAction(title: "OK", style: .Cancel) { action -> Void in
self.delegate.getFacebookName = ""
self.delegate.getTwitterName = ""
self.defaults.setObject("", forKey: "userid")
self.defaults.setObject("", forKey: "userstatus")
self.defaults.setObject("", forKey: "userimage")
self.defaults.setObject("", forKey: "userfName")
self.defaults.setObject("", forKey: "username")
self.defaults.setObject("0", forKey: "Nicon")
self.defaults.setObject("0", forKey: "Micon")
self.defaults.setObject("", forKey: "token")
self.delegate.tag_jive_channel_tab = 0
self.delegate.token = "0";
self.delegate.ary_channelList = NSArray()
self.delegate.NotificationCount = 0
self.delegate.MessageCount = 0
if(self.delegate.signout_time_check_loader == 0)
{
self.delegate.loader = 1
}
// Direct in and then is work good
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let initialViewController = storyboard.instantiateViewControllerWithIdentifier("FirstNavigation")
UIApplication.sharedApplication().delegate?.window??.rootViewController = initialViewController
UIApplication.sharedApplication().delegate?.window??.makeKeyAndVisible()
//self.connection_sign_out()
self.delegate.appd_userid = ""
for object in (UIApplication.sharedApplication().windows.first)!.subviews
{
if let specificObj = object as? UIButton {
if(specificObj.tag == 7001) // means fav button
{
specificObj.removeFromSuperview()
}
}
}
}
actionSheetController.addAction(cancelAction)
}
}
}catch {
//print(error)
}
}
} catch {
//print(error)
dispatch_async(dispatch_get_main_queue()) {
self.hideLoader()
}
}
},
failure: { (operation: AFHTTPRequestOperation!,
error: NSError!) in
//print("Error:getAfnetworking: " + error.localizedDescription)
self.hideLoader()
}
)
//en d
dispatch_async(dispatch_get_main_queue(), { () -> Void in
print("This is run on the main queue, after the previous code in outer block")
})
})
Please give me solution
