Value of NSMutableDictionary is not changing inside the block

Value of NSMutableDictionary is not changing inside the block

By : user2948133
Date : November 14 2020, 04:48 PM
Hope this helps That happens because you get to the line with "Data 2" first and the block is executed only afterwards, since it is an async request. I would suggest that you change your method to something like:
code :
- (void)getDataFromURL:(NSString *)url completionHandler:(void (^)(NSMutableDictionary *returnData, NSError *error))handler {
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Data 1: %@",returnData);// it is printing the data
        handler(returnData, nil);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
        handler(nil, error);
[self getDataFromURL:@"abc.com" completionHandler:^ (NSMutableDictionary *returnData, NSError *error) {
    // process your dictionary and the error object

Share : facebook icon twitter icon
Changing variable inside block

Changing variable inside block

By : Mikaela
Date : March 29 2020, 07:55 AM
will help you Are you sure you don't have any method accidentally set flag = NO;? Because it looks like everything is fine. I even tried it by myself and I can get it logged as 1.(Same code you used)
Get the values from NSMutableDictionary inside NSMutableDictionary

Get the values from NSMutableDictionary inside NSMutableDictionary

By : Silvalex
Date : March 29 2020, 07:55 AM
may help you . After you add dictionary1 to dictionary2, you are removing all of the objects.
This is the same dictionary that is in dictionary2 (it does not create a copy), therefore you are removing the objects from it as well.
code :
// Remove the reference
dictionary1 = nil;

// Or, create a new, empty dictionary
dictionary1 = [[NSDictionary alloc] init];
changing value of a variable inside catch block

changing value of a variable inside catch block

By : Thomas Sax Saccoh
Date : March 29 2020, 07:55 AM
wish helps you String is immutable:
code :
dateRemovedString = dateRemovedString.concat(str[i]);
StringBuilder dateRemovedString = new StringBuilder();
return dateRemovedString.toString();
Address of a variable is changing when inside a block

Address of a variable is changing when inside a block

By : vishal
Date : March 29 2020, 07:55 AM
this will help In the following code, address of b is changing when it's within the block. Why? And if it changes for b, why not for a? , A block is similar to a function. Consider:
code :
void testFunc(int *a, int b)
    printf("%p", a);
    printf("%p", &b);

int b =42;
int  *a = &b;

printf("%p", a);
printf("%p", &b);

testFunc(a, b);

printf("%p", a); //address not changed
printf("%p", &b);//address not changed
Copying a changing object to inside a block, so the block has the correct value

Copying a changing object to inside a block, so the block has the correct value

By : NovaStar
Date : March 29 2020, 07:55 AM
I hope this helps you . You ask:
I suspect every block will hold a reference to its corresponding aDict, so they will not crash even if they execute when the caller is out of scope, right?
Related Posts Related Posts :
  • Warning: "Could not get traitsetID for iPhone11,6" (Assets.xcassets)
  • Changing root view controller after iOS app has loaded.
  • SocketRocket and iOS certificate pinning
  • Draggable UIButton Snap To a Circle Path
  • Running FireBase in the background
  • resizing UIPopoverController to fit UITableController
  • UICollectionView Exception Crash
  • targeting iOS5 - will it work on iOS6 also?
  • FBLoginView get email
  • Scale UIImages height to UIImageView height
  • Creating a custom progress indicator in ios
  • NSRunLoop API difference
  • Is it possible to inject custom settings into my iOS application "Notifications" settings dialog?
  • UIAlertview not accepting string as message
  • Axis change of stackView giving layout error
  • How to use AVAssetResourceLoader?
  • How to write block definition using properties?
  • iOS connect/reconnect to Bluetooth device when using external-accessory and MFi
  • Saving XMPP Multi User chat messages through XMPP MessageArchiving in iOS
  • Deciding iOS version: pros and cons
  • iOS: Resigned app cannot access keychain through security API
  • How can I set To and Subject fields in an E-Mail being sent by UIDocumentInteractionController?
  • Updating uilabel in view controller underneath another
  • Maximum time Intervel for NSTimer
  • Delete Core Data Entry from Table View Controller
  • How to unload UIViewcontroller from memory?
  • Compressing UIImage as Far as Possible?
  • Optimizing workflow to update internally owned cocoapods dependencies?
  • Formatting an NSDate with Abbreviated Month/Day Names
  • I'm creating a quiz game with 4 answers and I want to add score
  • Tap Gesture to Hide Navigation Bar, Tab Bar, and Status Bar
  • FBSessionStateClosedLoginFailed when I am logged in through Settings
  • CGRect positioning according to center point
  • iOS: Update table view datasource with animations without core data
  • iOS : Where to start for AliPay integration?
  • Routing App Coverage File missing but not needed?
  • Drawing on a zoomable view
  • Append NSStrings and NSNumber to NSMutableArrays and make NSMutable dictionary
  • Terminating app due to uncaught exception 'NSRangeException' when calling dequeueReusableCellWithReuseIdentifier:forInde
  • Collision without physics (Cocos2D + Box2D iOS)
  • Creating a percentage based iOS layout
  • Update tableView row from AppDelegate Swift 4
  • Assigning return value of a class method to a variable error
  • how to display circular progress in delphi ios apps?
  • I can't figure how to fix this Expected identifier or '('
  • How to Test APIs in Swift 4?
  • Link error /Build/Products/Debug-iphonesimulator file not found
  • working with a very large JSON object in iOS
  • Turn off part of the iPhone Screen
  • Phonegap 3.0 app with facebook login using xCode
  • How to add interstitial admob ads to my ios project
  • adding tapku calendar to ios app
  • Add an alertcontroller in a global swift file?
  • Take square image with Cordova (Phonegap) Camera API?
  • Amazon S3 policy allowing only upload not overwrite
  • How to change the UILabel content by tapping?
  • Adding checkmark to selected table cell also checks another table cell
  • UICollectionView cellForItemAtIndexPath indexPath row is nil
  • Resize and set quality on JPEG image while retaining EXIF in iOS
  • How to push rootviewcontroller in Ios
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org