ShakeDetector: Shake it baby!

Periklis Koutsogiannis

Active Member

Licensed User

Longtime User

• Jul 26, 2014

• #1

version 1.0​

Introduction

This class does exactly what is says and is the simplest class I've ever made.

Latest package (library files and samples)
https://www.dropbox.com/s/p5exn94rle6f2w1/shakedetector.zip

Compiled samples (APK)
https://www.dropbox.com/s/ou4jexl4xj6nz2k/sample.apk


How to use

Declare a ShakeDetector in Sub Globals

B4X:

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.
    Dim Detector As ShakeDetector
End Sub

Initialize the object in Sub Activity_Create

B4X:

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("Layout1")

    Detector.Initialize("Detector")
End Sub

Start the Detector when the activity is resumed

B4X:

Sub Activity_Resume
    Detector.Start
End Sub

Stop the Detector when the activity is paused

B4X:

Sub Activity_Pause (UserClosed As Boolean)
    Detector.Stop
End Sub

Catch the shake event

B4X:

Sub Detector_Shake
    Log("Shake it baby!")
End Sub

Version history:

• 1.0: Initial version

That's all for now folks!

 

Last edited: Jul 26, 2014

ivan.tellez

Active Member

Licensed User

Longtime User

• Jul 26, 2014

• #2

This is really handy, but not really suitable for all kind of projects.

To have a true reusable component, it has to have some kind of adjustment. Maybe if you add a "threshold" property.

Also could be more useful if you could have some feedback of the shake, like returning the velocity.

Thanks for sharing

 

Periklis Koutsogiannis

Active Member

Licensed User

Longtime User

• Jul 26, 2014

• #3

You are welcome

The calculation inside the library catches a normal shake event based on x,y,z. Normal projects are ok with that. If someone needs to make an app that will do things based on the velocity and so on, it will not work. But these projects are outside of the scope of the library

 

Periklis Koutsogiannis

Active Member

Licensed User

Longtime User

• Jul 26, 2014

• #4

For example, I have never seen an app that has a "Do something on shake" to offer any shake calibration options

 

ivan.tellez

Active Member

Licensed User

Longtime User

• Jul 26, 2014

• #5

Periklis Koutsogiannis said:

For example, I have never seen an app that has a "Do something on shake" to offer any shake calibration options

Click to expand...

Actually there are lots of them, some had a range, others just a lo, medium and hi options.

Othes shoul include the options, Like WeChat, you had to hit the phone to be recognized as a shake , some time ago they change the sensibility and now its fine.


But, I was not really aiming to make an option for the user, it was more an option for the developer to adjust the threshold acording to the each app.

 

Douglas Farias

Expert

Licensed User

Longtime User

• Jul 27, 2014

• #6

u dont stop? xD go make 200 + libs xD

 

M

MiguelAlvarez

Member

Licensed User

Longtime User

• Nov 22, 2015

• #7

That's all for now folks!

It does not work from a service?
Can you help me. I need to work from a service running in background.... Thanks

 

imgsimonebiliato

Well-Known Member

Licensed User

Longtime User

• Jan 27, 2016

• #8

Hello,
does it work if the screen is turned off?

 

lemonisdead

Well-Known Member

Licensed User

Longtime User

• Jan 27, 2016

• #9

imgsimonebiliato said:

does it work if the screen is turned off?

Click to expand...

Hello,
For that you have to :

• use a service instead of an activity
• manage the PhoneWakeState and put a PartialLock

 

S

stanks

Active Member

Licensed User

Longtime User

• Oct 30, 2016

• #10

i tried it but it won't work. b4x v5.8. Erel's example on the other hand works only when sound is on