Android Question A Live Chart ?

[tufanv]

Hello,

Is it possible to implement a live chart like moving to right. I get live data to my app from my server and need to implement a live chart that draws every second.

There is mpandroidcharts lib but it is for single draw i think and to draw it every second again will eat resources much.

Thanks

 

[sorex]

sure.

use a canvas of lets say 300px
and when a new value is retrieved you move pixels 1-299 to 0-298
clear "row" 299 and draw you pixel or line.

it's similar to this post where there is an example on how to do the copy (in B4J) > https://www.b4x.com/android/forum/threads/signal-spectrum.77571/page-2#post-492959

 

[Mark Read]

I use the library from walterf25, here: https://www.b4x.com/android/forum/threads/graphview-library.34995/#content