My app is working on emulator but crashes when installed on a phone

MIT App Inventor Help
1

My app is designed to reward users for walking. I have created two screens:

  1. The first screen contains a pedometer and related features for counting steps (the steps are saved in firebase)

  2. The second screen is the login screen(informations are also saved in firebase)

The app works fine on the emulator, but when installed on a phone, it crashes multiple times after logging in. I don't know what the problem is.

blocks,Screen1
blocks,Screen11784×919 180 KB

blocks,Screen2
blocks,Screen21333×778 113 KB

mods removed apk aab files. Not permitted to post these with direct links in this forum.

2

What do you get for a start value in Screen1, and how do you pass such a value to Screen1?

3

i get The username from the user when registered and pass it to the first screen

4

TinyDB is better for transferring data across screens.

Also, starting Screen1 from other screens should be avoided.

Also, I do not see a When FireBase1.ErrorOccurred event block with a Notifier to tell you if you had a Firebase error. That might help intercept a crash.

5

thank you i just solved it

6

So, what was it?

7

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.