環(huán)境搭建

一、創(chuàng)建Android Studio項目

1.打開Android Studio IDE 點擊 File -> New -> New Project

Create New Project.png

2.Empty Activity -> Next -> Finish

Create New Project.png

二、導(dǎo)入 OpenCV Android SDK 依賴項

1.File -> New -> Import Module ->OK
2.選擇OpenCV4的路徑（必須選擇到j(luò)ava目錄上）
例如： D:\OpenCVandroidSDK\sdk\java

Select Source Location.png

Import Module.png

三、修改build.gradle文件

1. apply plugin: 'com.android.application'修改為apply plugin: 'com.android.library'
   1.1選擇build.gradle（OpenCV4）
   1.2將apply plugin: 'com.android.application'修改為apply plugin: 'com.android.library'

   
   
   Modify Gradle.png
   
   

   2.將文件中的自動生成的applicationId "org.opencv"刪除，因為OpenCV4模塊是屬于library而不是application

   
   
   Modify Gradle.png
   
   3.將compileSdkVersion 、buildToolsVersion、minSdkVersion 、targetSdkVersion 屬性值的設(shè)置與app對應(yīng)的build.gradle文件的配置一致。
   
   OpenCV4.png
   
   
   app.png

4.添加jniLibs文件夾

1.在 app -> src -> main 文件夾下添加jniLibs
1.1 File -> New -> directory

jniLibs.png

1.2 app目錄如下

Content.png

copy.png

contentcopy.png

4.配置app中的build.gradle進行配置，增加jniLibs.srcDirs參數(shù)

sourceSets{
    main{
        jniLibs.srcDirs = ['src/main/jniLibs']
    }
}

5.配置支持的ndk類型，把架構(gòu)包寫到app對應(yīng)的build.gradle中

        ndk{
            abiFilters "arm64-v8a","armeabi-v7a","x86","x86_64"
        }

6.OpenCV4 build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3"

    defaultConfig {
        
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

7.app build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3"
    defaultConfig {
        applicationId "com.example.opencvdemo"
        minSdkVersion 28
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

        ndk{
            abiFilters "arm64-v8a","armeabi-v7a","x86","x86_64"
        }

    }

    sourceSets{
        main{
            jniLibs.srcDirs = ['src/main/jniLibs']
        }
    }



    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

五、添加依賴

1.File -> Project Structure ->Dependencies -> app -> + -> 勾選OpenCV4 -> Ok->OK

select Model.png

六、測試

OpenCVDemo.png