[Android] Set up an environment for OpenCV4.0.1 C++ ndk18

Related post:

Setup OpenCv Android without install OpenCv manager apk

[Android] Set up an environment for C++ native ndk18

[Android] How to use the prebuilt .so lib files (ndk native C++)

1. Integrate OpenCV Android

• Download OpenCV SDK for Android at https://opencv.org/releases.html, Unzip OpenCV SDK and place it in the same root project folder
• Update settings.gradle

include ':app'
def opencvsdk = '../OpenCV-android-sdk'
include ':opencv'
project(':opencv').projectDir = new File(opencvsdk + '/sdk')

2. Update app/build.gradle

apply plugin: 'com.android.application'
android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.nhancv.myapplication"
        minSdkVersion 21
        targetSdkVersion 28…