Out Of Memory Error Since hellocharts used about hellocharts-android

[lecho]

Hi, I'll check it. Can you tell me on which device you experienced this error?

[sol4ris2048]

Thanks lecho. You're so fast!
I experienced it on a Galaxy Note 3

[lecho]

Now it might take a while, I will try to reproduce it. One more question, do the error occurs when you rotate device or switching between activities?

[sol4ris2048]

It happends when i switch between activities.
My app is only in portrait mode.

[sol4ris2048]

But, in general, is there a function to call in onStop() or onDestroy() methods of fragments/activities when we use hellocharts to free some memory or anything else?

[lecho]

No, there is no method for that.

[sol4ris2048]

Lecho, I have a question concerning this problem.
I'll try to be understandable :-)
My app is using the 1.3 JAR version of hellocharts.
So, I gave a look at the source code of the Release of this 1.3 version at the line number 93 concerned by this problem in my error log :

"lecho.lib.hellocharts.renderer.LineChartRenderer.initDataMeasuremetns(LineChartRenderer.java:93)"

And I realized that in the 1.3 source, the line 93 don't correspond to this function (initDataMeasuremetns()) but it corresponds to the line of the 1.1 version of Release source code of this library...!

So it seems that the 1.3 JAR file of the hellocharts library (that i downloaded here at Release 1.3 Section : https://github.com/lecho/hellocharts-android/releases) has been generated with 1.1 source code...

Am I Right?

[lecho]

Hmm, I'm not sure but it looks like error log is correct, it points to line within initDataMeasurements() method when LineChartRenderer creates new bitmap
LineChartRenderer.java:93 at tag v1.3

For version 1.1 line 93 points to setting bitmap to canvas, that should not cause problems with memory.
LineChartRenderer.java:93 at tag v1.1

[sol4ris2048]

Yes, but on your first link ( LineChartRenderer.java:93 at tag v1.3 ) the corresponding manifest indicates 1.1 version.... not 1.3...

[lecho]

O, yes, looks like I forgot to change version number:/ But source code should be Ok.
I decompiled jar for version 1.3(in JD-GUI), it's ok, the same as for tag v1.3.

[sol4ris2048]

Ok thanks, so the problem is really due to createBitmap() function.

Just for information, in my Fragments, i add the chart programmatically (with addView) but not in XML UI file.

So, I add it in a Linear Layout which is defined in the XML file.

[sol4ris2048]

This problem appears on Samsung Galaxy s4, too

[sol4ris2048]

I replaced the backgrounds image (which had yet low resolution) of the fragments which contains charts by simple color backgrounds (no images but just color).
I have the impression that the problem has disappeared...
Maybe my background images filled too much memory (even if their resolutions were very low)....
So, it seems to be better...

[sol4ris2048]

I'll wait some hours before close this post, to be sure the problem is really solved

[lecho]

Ok, check with memory monitor if heap usage stays on the same level when you switch between activities.

[sol4ris2048]

Thanks a lot for your help and congratulations for your work on this lib.
Regards