Loading large datasets in Android

September 27, 2017 - 8:38am #1

Hello,

It has come to our attention that changes in the behavior of the Android Build Tools (starting with version 25? we are unclear on the exact number) can affect the performance of device database loading times of the Vuforia SDK.

For smaller databases (less than 10 images), the effect may not be noticeable. However, for larger databases, the time to load can take several seconds or longer. 

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Load dataset from Android split binary (obb)

August 2, 2017 - 8:32am #1

A previous thread has described a few different approaches to handling an Android app that exceeds 100mb in size: https://developer.vuforia.com/forum/faq/unity-how-can-i-handle-large-android-apps

This thread will provide a small example of how to load a dataset from the obb file when using the split binary option.

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Vuforia Rendering Primitives

October 11, 2016 - 7:40pm #1

Attention native Android and iOS developers:

We’re updating our rendering API to allow for increased flexibility, better performance and easier integration of Vuforia with other rendering engines.

What does this mean for you?

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Video Playback on Texture - Black screen appears at beginning for a moment

March 25, 2014 - 3:31pm #1

Issue explanation: a blank screen appears for a few moments (it's usually less than half a second), after the target was detected

When?: right after a target is detected, and the video is right about to start (PLAYING state)

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Using Android Studio with Vuforia

July 11, 2013 - 11:57am #1

If you are using or planning to use the Android Studio IDE, here are some notes about how to import and build the Vuforia samples:

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Vuforia and Android - Common topics

May 6, 2013 - 5:00am #1

This is a list of common questions, issues and how-to topics related to using the Vuforia SDK onm the Android platform:

  • How to replace the sample Dataset with a custom Dataset in the Image Targets sample:

https://developer.vuforia.com/forum/faq/android-how-do-i-replace-dataset-image-targets-sample

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Vuforia, Android and OpenGL ES

May 3, 2013 - 1:37am #1

 

OpenGL ES is the standard for rendering 3D content on mobile platforms.

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How do I fix my compile or runtime errors

April 9, 2013 - 2:14am #1

 

The general procedure on how to build and run a Vuforia sample app is described in this page:

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Autofocus on Android

August 7, 2019 - 10:07am #1

I am using the latest version of Vuforia SDK 8.3. I see this question has been asked here before. I am setting CONTINUOUS AUTOFOCUS on the CameraDevice, it returns true, but the CONTINUOUS AUTOFOCUS is not happening. This is the pure Android version of the SDK so I am not using any ARCore or ARKit or Unity. Just Android Studio & Android SDK. 

1. Is there a solution to making AUTOFOCUS work? 

2. If not, is there a workaround?

3. If not, can I get a link to download the older SDK that had CONTINUOUS AUTOFOCUS working? because this feature is a must. 

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Tracker is null after initTracker()

August 1, 2019 - 10:08am #1

Hi,

first of all i am pretty new to the Vuforia world. I am trying to write my first vuforia-android app with it, but i ran into some issues. 

 

My application follows the flow defined in: 

https://library.vuforia.com/content/vuforia-library/en/reference/java/index.html

 

My problem is that 

(ObjectTracker) TrackerManager.getInstance().initTracker(ObjectTracker.getClassType());

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