Retrieving values from Firebase to App Inventor

MIT App Inventor Help
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1

How do I correct this code in order to accurately retrieve the values from Firebase?

2

There is an awful amount of confusion in your blocks!

We need to start from the beginning....

What is your raw responseContent - what does it look like on return? (post here as text, not an image)

3

@TIMAI2

I've tried to modify my code.

image
image1366×768 166 KB

Here is what I need to fetch.

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image1366×768 89.4 KB

But there seems to be a problem with my block of codes because the values don't display.

4

The Firebase component generally only works with firebase projects on the US server. You have a choice:

  1. Create a new project on the firebase us-server
  2. Use the web component to access the data on your existing project
5

@TIMAI2
Is there an alternative way for my block of codes similar to that I have given you which could work on my server? Could you help me modify the codes that could function with regards to what server I am using?

7

@TIMAI2

Also, how do I implement the timestamp that is displayed along with the values I've fetched in my Firebase? Would it be possible? Could I also convert the values into a string of characters once the values are fetched? For example, instead of "935999a95", the label is set to "Access denied." + current timestamp, and if it is "53786ca8", the label is set to "Access granted." + current timestamp?

Please help me as I am only a beginner.

8
  1. Have you sorted out your access to the data yet? Are you getting values in responseContent?
  2. What timestamp, your screenshot of your firebase data does not show a timestamp, but the "keys" are generated by Firebase following a POST of the data, and these keys are time based alpha-numeric codes?
9

I haven't sorted the data and haven't gotten values in responseContent. Regarding the blocks of code I have formerly provided, what should I modify? Because the modified blocks of code in my second screenshots do not provide the timestamp and keys are not generated following a POST of the data... How do I execute it?

10

Have you set up a new firebase project on the us server, or are you going to use the web component to access your data?

Some firebase component basics for you:

http://ai2.appinventor.mit.edu/reference/other/firebaseIntro.html