Bluetooth List picker

Tech εφευρέτης

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Sep 23, 2018, 11:27:49 AM9/23/18

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Hello there.

I'm trying to connect Bluetooth to hc-08 trough my android phone. But when i tap on list picker it just gives me nothing. It's all black. My bluetooth is on. I have tried other application on google play and they work fine.

Can you help me, please?

blocchi bluetooth.PNG

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Sep 23, 2018, 12:09:14 PM9/23/18

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i'm using only one screen

SteveJG

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Sep 23, 2018, 12:35:07 PM9/23/18

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When you elicit the ListPicker I expect the behavior of displaying the ListPicker selections behaves in a way similar to what happens when a user changes Screens and perhaps the Bluetooth client behaves as if you changed screens. I really don't know.

As an experiment, I suggest you try using a ListView component instead of the ListPicker. Try to select using the ListView (the selection process is similar but the ListPickers selection stays on the screen of origin) Use a ListView and see what happens. If you can select that way and cannot with the ListPicker, you just discovered an undesirable behavior of the ListPicker when used in conjunction with a Bluetooth client.

What do you discover?

Regards,

Steve

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Sep 23, 2018, 4:42:12 PM9/23/18

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i have tried using List view, but it doesn't work... Why it works for everyone else but not to me?

SteveJG

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Sep 23, 2018, 5:52:42 PM9/23/18

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Here is an example that 'seems' to work with bluetooth and a ListPicker. Why it works for everyone else but not to me?

Why it works for everyone else but not to me? , Do you have the bluetooth paired with your device? I understand the bluetooth devices links won't appear unless the devices are paired..

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Sep 24, 2018, 5:30:31 AM9/24/18

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my device won't pair with HC-08 directly... but other apps can see all the bluetooth devices but not my app....

Chris Ward

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Sep 24, 2018, 5:57:10 AM9/24/18

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Hello Tech εφευρέτης

Is that the HC-08 Arduino?

If so, I think you are using the wrong Bluetooth functions - try the MIT BLE (Bluetooth Lite Edition) Extension:

http://appinventor.mit.edu/extensions

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Sep 24, 2018, 6:09:09 AM9/24/18

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i have downloaded the extension but i don't know how to add it on my app. Can you help me please?

Chris Ward

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Sep 24, 2018, 6:22:56 AM9/24/18

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Here we go. On Screen1:

Designer Components Palette.png

Designer Component Extension.png

Import Extension.png

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Sep 24, 2018, 7:00:53 AM9/24/18

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Thank you all for help.Now i can see all the device and i can also connect to them.... For me the normal bluetooth thing just didn't work....

I also found this video for people like me who has the same problem as mine: https://www.youtube.com/watch?v=a1S-abFOZMA

Thank you Chris Ward

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