Android studio 为现有项目添加JNI

刚开始创建项目的时候并没有勾选“include C++ support” 选项:

Android studio 为现有项目添加JNI_第1张图片

后期增加步骤:

1.拷贝已有支持C++项目的CMakeLists.txt文件到现有项目的app目录下;

2.在app/src/main 目录下新建cpp文件夹;

3.修改app目录下的build.gradle文件,分别在defaultConfig的大括号和android的大括号中添加“externalNativeBuild”项:

复制代码

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.yongdaimi.android.ffapitest"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        externalNativeBuild {
            cmake {
                cppFlags ""
            }
        }        
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    externalNativeBuild {
        cmake {
            path "CMakeLists.txt"
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}备注:CMakeLists文件放置位置如下图:


 

 

转自:https://www.cnblogs.com/yongdaimi/p/11082995.html

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