ios - How to access local variable in for loop through dictionary or dictionaries when only one dictionary is available? -

-

I have a loop to go through the dictionaries of dictionaries. It only works fine unless only one dictionary Not total

Here is the summary of my method: 

  - (NSArray *) objects FROMJSON: (NSString *) jsonString error: (NSError **) error {NSParameterAssert (jsonString! = Zero); // Create JSON object NSData * jsonData = [jsonString dataUsingEncoding: NSUTF8StringEncoding]; NSError * localError = Nil; Id jsonObject = [NSJSNSRialization JSONObjectWithData: jsonData options: 0 error: & amp; Local error]; NSDictionary * dictionaryOfDictionaries = (id) jsonObject; // If not successfully parsed, then error (dictionaryoffdexin == zero) {if (error! = NULL) {* Error = [NSER Error: Dird Error: Error Domain Code: Locked DataAir User Inc: Zero]; } Return zero; } / / Create objects from other parsed data NSMutableArray * objectsArray = [NSMutableArray array]; (Objectivity [@ "road"] City: Objective [@ "city"] For the state: Object [["" state "]; // If error, return if (object == blue) {if (error!) { * Error = [NSER Error: With Dashman: Error Domain Code: Missing DataArchor User Information: Zero];} Return Zero;} // Add more successfully created object array [Objects Ore Object: Object];} Return [Objective copy] ;}

As told by It works fine - that is, object s has been successfully created from objectDictionary - if there is more in one dictionary, the dictionary dictionary However, if there is only one dictionary, then being typed for objectDictionary in the id for the loop (rather than the obj ) , And use its values, such as objectDictionary [@ "name"] result in an error.

How do I write it in the most efficient way , So that a dictionary is handled?

Here's the problem when you have more than one dictionary In fact, in each word, jsonObject actually contains each dictionary from a NSArray .

When there is only one dictionary, jsonObject is only one dictionary.

Replace your code like this: 

  id jsonObject = [NSJSNASialization JSONObjectWithData: jsonData option: 0 error: and local error]; NSArray * arrayOfDictionaries = Zero; If (jsonObject == zero) {// handle error} and if ([JasonOnbys iskindoff class: [NSARRA class]]) {arrayOfDictionaries = jsonObject; } And {arrayOfDictionaries = @ [json object]; }   
  for loop:  
  (NSDictionary in objectDictionary in arrayDictionary)

Comments

Post a Comment

Popular posts from this blog

c# - SignalR: "Protocol error: Unknown transport." when navigating to hub -

-
Image
I am trying to use the ASP.NET signal for the first time - here's what I did: created a new web Has been added to the project and the following signal R packages: I have created the following category: [Hub-name ("chat")] Public class ChatHub: Hub {Public Zero Halo () {Clients.All.hello ( ); }} and the following startup configuration: public partial class startup {public zero configuration (IAppBuilder app) {configure (app); App.MapSignalR (); }} However, whenever I navigate localhost: (port) / api / signalr / chat I get the following error: Protocol error: Unknown transport. I am running a new browser and trying different people so remove it from the API / URL, and just use the localhost: (potter) / signaller / Chat
Read more

class - Kivy: how to instantiate a dynamic classes in python -

-
Using KV lang on my Python code, I have taken a hard time trying to instantiate a dynamic class, the following Consider the code: My test.kv file looks like this: & lt; MyPopup @ popup: Title: 'Hello' size_hunt: (1, .6) Grid layout: ID: RouteGrid column: 2 padding: ['8dp', '4dp', '8dp', '4dp'] Difference: '8dp' label: text: 'some text here' button: text: 'OK' On_press: do_something () & lt; MyGrid & gt;: Rows: 1 Button: Text: 'Show Popup' on_press: root.pop.show () Then import Kivy.app into my test.py: I get the following error: raise Factory Exception ('Uncount Class' '% name) kivy.factory.FactoryException: Unknown class Can anyone tell me how to do this properly, what do I remember? If you need more information please let me know Thank you. Takes a call to the factory before the KV file is loaded, so you want the class to Are not yet in existence. As long as no clas...
Read more

python - mayavi mapping a discrete colorbar on a surface -

-
Image
I want to change the color of the surface on the basis of another value (an ID) that is considered discrete (hence I In the simplified example given below, I have prepared a field with 3 different IDs: 0 / red on left 2 / blue 1 / green left But with the code below, I have some strange behavior on the border between red and blue (green Point) I think this is probably due to an interpolation! Code: import from import mlab np # np # my dataset -simplified-x, y, z = np.mgrid [-3: 3: 100] H, -3: 3: 100h, -3: 3: 100 h] value = NP. SQLT (x ** 2 + y ** 2 + z ** 2) # My color value: Volume is divided into 3 sub-versions taking colorvalues ​​with X = np.empty (values.shape) colorvalues [0:33,:,:] = 0 colorvalues ​​[33:66,:,:] = 2. Look [66:,:,:] = 1 src = mlab.pipeline.scalar_field (value) src.image_data.point_data.add_array (colorvalues.T.ravel ()) (1) .name = 'MyID' src.image_data. point_data.update src.image_data.point_data.get_array () # surface, contour = mlab.pipe...
Read more