Open another screen not work in phone but in companion work

[YAYAN_GUNAWAN]

Hi. i make app for mappinng, i want to put some polygon. i have problem when go export to apk my project the function open another screen not working. The Apk crash but in companion is really good. when i try delete Feature Collection is work when i export it again to apk. but i need the feature collection. can someone help me, this is for my project in the school.

[Didyme_Apps]

Try to use the text block where you fix the name of the new screen.

[YAYAN_GUNAWAN]

i have tried it, any idea or solution?

[Didyme_Apps]

Try it

How to switch screens correctly

I see many issues done by users because they switched screens not correct. This below is now just one of many other solutions: [blocks] If you dont open/close screens correct your app will get possible runtime errors. Possible errors: (example) Unable to add window -- token android.os.BinderProxy@45d459c0 is not valid; is your activity running? Iam sure you don’t want that. Then please do it in the future and switch screens correct. General Tips and Tricks for App Inventor/Makeroid …

[YAYAN_GUNAWAN]

i have tried it, and still crash, any solution please?

[Still-learning (1-2-3-4...)]

Do logcat to find actual reason for the crash

Capturing Device Logs using adb logcat

[Dario_R (Darío R Navarro)]

Hello! Try to use “if then else” instead of 3 if, because when you open another screen, the code of the first screen keeps running.Try to rule out.

[YAYAN_GUNAWAN]

I think i found the eror is 3404, anybody know how to solve this error please?

[Still-learning (1-2-3-4...)]

ERROR_POLYGON_PARSE_ERROR = 3404;

Due to this you get json error too

[YAYAN_GUNAWAN]

yap, so what i must gonna do to fix it?