Default BaseLoaderCallback implementation treat application context as Activity and calls Activity.finish() method to exit in case of initialization failure. Load your own native libraries that depend on OpenCV after the successful OpenCV initialization. Please note, that it is not allowed to use OpenCV calls or load OpenCV-dependent native libs before invoking this callback. OnManagerConnected callback will be called in UI thread, when initialization finishes. It this case application works with OpenCV Manager in asynchronous fashion. Press Browse button and locate OpenCV4Android SDK ( OpenCV-2.4.9-android-sdk/sdk). Use menu File -> Import -> Existing project in your workspace. It uses the OpenCV Manager to access OpenCV libraries externally installed in the target system.Īdd OpenCV library project to your workspace. Using async initialization is a recommended way for application development. Java Application Development with Async Initialization You can get more information here: Android OpenCV Manager and in these slides. Starting with 2.4.2 release for Android, OpenCV Manager is used to provide apps with the best available version of OpenCV. In this section we will explain how to make some existing project to use OpenCV. Using OpenCV Library Within Your Android Project If you encounter any error after thoroughly following these steps, feel free to contact us via OpenCV4Android discussion group or OpenCV Q&A forum. If you need help with any of these, you may consult our OpenCV4Android SDK tutorial. This tutorial also assumes you have OpenCV4Android SDK already installed on your development machine and OpenCV Manager on your testing device correspondingly. If you need help with anything of the above, you may refer to our Introduction into Android Development guide. This tutorial assumes you have the following installed and configured: This guide was written with Windows 7 in mind, though it should work with any other OS supported by OpenCV4Android SDK. This tutorial has been created to help you use OpenCV library within your Android project. Next Tutorial: Use OpenCL in Android camera preview based CV application
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