Display and access JSON objects and list formats

MIT App Inventor Help
1

How can I access the value and key of JSONs?

image

Here is the example but i want to access certain value which has these key inside of it.

2

Pull in the Web component, and look for its block that decodes JSON into a dictionary.

Work your way inside step by step into separate global variables, to help debug using Do It.

Don't try to parse it in one big gulp the first time. You will choke.

P.S. for {} levels, you will need dict key lookup.
For levels, you will need list select item number lookup.

1 Like
3

If you post that image as text, then someone might show you how to extract values....

4

The json (I OCR'd the image)

{"kind": "identitytoolkit#GetAccountinfoResponse",
"users": 
[
{
"localId": "nyrlBazCmLRD01PV2WUDiwow2162",
"email": "james@gmail.com", 
"passwordHash": "UkVEQUNURUQ=", 
"emailVerified":false, 
"passwordUpdatedAt": 1667888398433, 
"providerUserInfo": [
  {
  "providerId": "password", 
  "federatedId": "james@gmail.com", 
  "email": "james@gmail.com", 
  "rawld": "james@gmail.com"
  }
],
"valid Since": "1667888398", 
"lastLogin At": "1667938746668", 
"createdAt": "1667888398433", 
"lastRefreshAt": "2022-11-08T20:19:06.668Z"
}
]
}

Examples. I have done these "long hand" to help you see how you need to work through the json {...} and the lists [...] within the json

Get the email value from users

blocks (33)
blocks (33)2258×440 68.2 KB

returns: "james@gmail.com"

Get the providerId from providerUserInfo from users

blocks (34)
blocks (34)2818×596 96.5 KB

returns: "password"

1 Like
5

or use get value at key path block:

image
image773×219 12.2 KB

1 Like
6

Thank you for your answers, Helps a lot. I'm just trying to studying it by displaying such values so I can deeply understand on how these things works. I appreciated your efforts Thank you again.

7

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