Why Storage.setvalue lost value saved?

Former Member over 4 years ago

Hi Community,

I am havin a Value and saveing with Storage.setvalue and its working fine, but aventually, very , very randomly I lost that value so I need to get new valuel.

var value = Storage.getValue("deviceId");
if (value == null) {
Storage.setValue("deviceId", Math.rand());
}

This is my code for that event.

For first time devideId is empty, so I set value with randmon number, the next time deviceId it's not empty because I use the value saved on "disk", but eventualy the value for devidID change, that mean the vale saved on STorage is losted.

THe question is, on what situtation or conditions a value stored by Storage.value it's losted?

Regards,

Former Member over 4 years ago

And other question, How can I get DeviceID for vivoactive3 into of code?

jim_m_58 over 4 years ago in reply to Former Member

On a device you can get the part number with System.getDeviceSettings().partNumber but there is a catch. Some devices have multiple part numbers based on WW vs APAC, etc, You can use jungles so apps are built differently for different devices. You can also use resource overrides so you can get a string to indicate what device you're on.

Generally, it's very rare that once you put something in Application.Storage it will be lost. Changing the SDK used by the sim may reset storage do that can be expected.

flowstate over 4 years ago in reply to jim_m_58

Unknown said:
And other question, How can I get DeviceID for vivoactive3 into of code?

jim_m_58 said:
On a device you can get the part number with System.getDeviceSettings().partNumber but there is a catch

Maybe I'm misunderstanding the OP, but I think they want a unique ID for a given individual device, not a part number which identifies a model/group of devices.

If you want a unique ID, use:

[https://developer.garmin.com/connect-iq/api-docs/Toybox/System/DeviceSettings.html#uniqueIdentifier-var]

This is available since API 2.4.1, so it can be used with Vivoactive 3.

Unknown said:
THe question is, on what situtation or conditions a value stored by Storage.value it's losted?

App storage is deleted when the app is uninstalled.

There used to be a bug when updating an app would cause some persistent data to be erased, but that should be fixed by now.

Former Member over 4 years ago in reply to flowstate

THank you FlowState, I try to get unique ID with the link that you share and it' work, but I am watching that it's not like UNIT ID. This number you can find on Settings, System, About. How can I get that number to save with Storage.setValue??

jim_m_58 over 4 years ago in reply to Former Member

You can't access the unit ID in CIQ (It's a security thing). uniqueIdentifier is a combo of the UID and App Id, so it remains constant for an app, across updates, etc on the same device, while it's also unique for apps on the same device.

There's no need to save it in Storage, as your app can get it when it's needed.

Former Member over 4 years ago in reply to jim_m_58

Thank you jim_m_58,. Then How i get that Ids?? UID and AppId??? There are a function for that o I need two functions?

REgards,

jim_m_58 over 4 years ago in reply to Former Member

In code you can't UID can be seen in "About" on a device, and the App ID is what you have in the manifest.xml for your app.