This opencv-mobile repo is what all you want.

OpenCV4Android

Repo about create your own opencv-android lib without install opencv manager apk.

Steps

download opencv-2.4.13.2-android-sdk.zip
create an android project and named OpenCV4Android
create an android library and named opencv, edit Package name: org.opencv
unzip opencv-2.4.13.2-android-sdk.zip, and copy all subfolders in OpenCV-android-sdk/sdk/java/src/org/opencv to android opencv library opencv/src/main/java/org/opencv

do the following operate in android opencv library opencv/src/main/java/org/opencv/android:

delete AsyncServiceHelper.java
comment some code in OpenCVLoader.java

//    public static boolean initAsync(String Version, Context AppContext,
//            LoaderCallbackInterface Callback)
//    {
//        if (initDebug()) {
//            Callback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
//            return true;
//        }
//        Log.w(TAG, "OpenCV binaries are not packaged with application. Trying to use OpenCV Manager...");
//        return AsyncServiceHelper.initOpenCV(Version, AppContext, Callback);
//    }

copy OpenCV-android-sdk/sdk/java/res/values/attrs.xml to android opencv library opencv/src/main/java/res/values/
modify android opencv library file opencv/src/main/java/res/values/string.xml
```
<resources>
<string name="app_name">OpenCV-2.4.13.2</string>
</resources>
```
create jniLibs folder in android opencv library opencv/src/main
copy what you need subfolder in OpenCV-android-sdk/sdk/native/libs to android opencv library opencv/src/main/jniLibs
Import opencv library to app by the following:
1. click File->Project Structure...
2. click app under Modules category, and then click Dependencies on the right
3. click + around Dependencies and choose 3 Module Dependency
4. choose :opencv, and click OK, OK

Find the aar files

After you run the app, you should find the android opencv library aar files in opencv/build/outputs/aar, which like

opencv-debug.aar
opencv-release.aar

How to import the aar file

reference this

Result screenshot

Reference

opencv-android

Digital2Slave/OpenCV4Android

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