Why is my app crashing - Stopwatch?

[ChrisWard]

'Timer Always Fires' is for those Apps that need a timer to continue even when they are off-screen, which probably does not apply to your App. Why did you choose a 30 millisecond time interval?

Best to follow SteveJG's advice and do a search for Stop Watch (might be examples in the Gallery too) to see how to code one accurately.

I think the crash occurs because the Clock Timer Block (+ procedure) has not finished processing before it is called again.

Edit: Actually, since your timer can get into hours, 'Timer Always Fires' is appropriate.

[Anke]

@Ray_Li

and it keeps crashing in the companion app

What exactly is happening? What does crash mean? Do you get an error message?
Post the aia.

[TIMAI2]

Set your timer interval to 1000
1000ms = 1 second
App should then run....

[Anke]

Try this one (TimerInterval=30):
stopwatch_Anke.aia (6.9 KB)

[Ray_Li]

Where do I find this block?

Also, the error that pops up on my phone says, "MIT AI2 Companion has stopped"

[Anke]

In my app (aia). And search for "TFormat" extension.

Time Format Extension - Millis to [HH:mm:ss] - [days + HH:mm:ss] - [HH:mm] - [mm:ss] etc

Here is an extension to format the time / duration (millis) in different ways: → [ HH:mm:ss ] → [ days + HH:mm:ss ] → [ HH:mm ] → [ mm:ss ] → etc. This is asked very often and always requires a lot of questions / answers and posts in the forum. (Last here: Creating a Chronometer - #17 by PizzaGuy07) Hence this extension (some of it can also be implemented with the on-board methods, but I want to simplify it:): Version 1 (May 20, 2020): TFormat.aix (5.5 KB) Version 2 (Oct 20, 2021): TForm…

[Anke]

@Ray_Li

the error that pops up on my phone says, "MIT AI2 Companion has stopped"

Works fine on my test devices.
What device and which Android version?

[Ray_Li]

Android Linux 8.0.0

[Anke]

Build the APK and try ...

[Anke]

@Ray_Li

MIT AI2 Companion

Which version?

[Ray_Li]

Version 2.63

Also building the APK gives this error:

App Inventor is unable to compile this project.
The compiler error output was
________Preparing application icon
________Creating animation xml
________Creating style xml
________Creating provider_path xml
________Creating network_security_config xml
________Generating adaptive icon file
________Generating round adaptive icon file
________Generating adaptive icon background file
________Generating manifest file
________Attaching native libraries
________Attaching Android Archive (AAR) libraries
________Attaching component assets
________Invoking AAPT
AAPT time: 2.163 seconds
________Compiling source files
(compiling appinventor/ai_herui_ray_li/stopwatch/Screen1.yail to appinventor.ai_herui_ray_li.stopwatch.Screen1)

ERROR: appinventor/ai_herui_ray_li/stopwatch/Screen1.yail line 87: call to 'set-and-coerce-property!' has too few arguments (3; must be 4)

Kawa compile time: 3.286 seconds
.

[Ray_Li]

I've downloaded the extension, how do I get the blocks in my app?

[Anke]

@Ray_Li

Also building the APK gives this error

No problem to build the APK, try this:

stopwatch_Anke.apk

I also tried my app (Companion & APK) on a very old Android 5 device. Works fine!

[Ray_Li]

Where do I go to run the APK file that you uploaded?

[Anke]

Download it to your computer, copy it to your test device and install.

[ChrisWard]

Ray, you don't have to use an extension:

StopWatchHMS.aia (4.3 KB)

[Ray_Li]

Seems like your test works for me too...

[Anke]

@Ray_Li

Seems like your test works for me too

So where is your problem?
It should also work with Companion.

[Ray_Li]

Thanks! This works.

[Ray_Li]

I've resolved the issue, but thanks for your help, I appreciate it!