Problems with free fall detector tutorial (Android)

Charlie28000

As I'm a total newbie I tried to follow the tutorials to get a feeling for the whole thing. After the first tutorial (https://mbientlab.com/tutorial/android/java/) I received data from the sensor and everything worked fine. Afterwards I tried to follow the free fall tutorial, but it doesn't work (no matter if I'm using the project provided on GitHub or if I'm writing it on my own, following the steps in the provided videos).

I got the following messages in logcat:

11-23 21:00:19.428 22854-22854/com.mbientlab.freefalldetector W/System: ClassLoader referenced unknown path: /data/app/com.mbientlab.freefalldetector-1/lib/arm64
11-23 21:00:19.438 22854-22854/com.mbientlab.freefalldetector I/InstantRun: Instant Run Runtime started. Android package is com.mbientlab.freefalldetector, real application class is null.
11-23 21:00:19.508 22854-22854/com.mbientlab.freefalldetector W/System: ClassLoader referenced unknown path: /data/app/com.mbientlab.freefalldetector-1/lib/arm64

I don't know where the "-1" after "freefalldetector" comes from, but I guess it's part of the problem. When I'm trying to press the app's buttons on my phone, the app crashes. What could cause the problem and how can I fix it?

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Android version: 7.0
Android studio version: 2.2.2

Eric

Do you see the "connected" message in log cat?  The freefall app automatically attempts to connect to a board when it starts.

Charlie28000

Unfortunately I don't.

Eric

Did you update the macAddress variable (line 117) to match your board?

Charlie28000

Yes, I did.

Eric

Since you have the accelerometer example working, start with that code and add the data processing chain from the free fall tutorial.