android studio jni入门

---恢复内容开始---

 假设你的配置信息和我一样:
android studio   版本                         2.1.2
sdk\build-tools   版本                         23.0.3
ndk                    版本                         android-ndk-r10

-------------------------------------------------------------------

以下是一个简单的android studio版本jni入门,已跳过各种坑

===

1.新建module

 

2.编写native方法,与c/c++世界交流

 

3.make以下module或者project,生成classes文件夹,箭头指向处

 

4.生成头文件,假设你没有出现问题

 

5.可以看到.h文件,为以后复制打基础

 

6.编写简单jni函数,把步骤5的.h文件复制到jni目录下

 

 

 

 

 

注意,其中有个FixBug.cpp  可以是任意符合规则的.cpp文件 

7.gradle配置

 

 

8.调用如下

 

 

9.效果如下

 

 

==========仅供参考===========

=====================Project ----->build.gradle===========================

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject .buildDir

}

 

=====================Module--->build.gradle===========================

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "july.appn"
        minSdkVersion 11
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        ndk{
            moduleName "hello" // 生成hello.so文件
            abiFilters "armeabi", "armeabi-v7a" , "x86"  //输出指定三种abi体系结构下的so库。
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt' ), 'proguard-rules.pro'
        }
    }
    sourceSets { main { jni .srcDirs = [ 'src/main/jni', 'src/main/jni/' ] } }
}

dependencies {
    compile fileTree(dir : 'libs', include: ['*.jar' ])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.3.0'

    compile 'com.google.android.gms:play-services-appindexing:8.1.0'

}

 

碰见如下异常时:

10:16:09 Gradle sync failed: Error: NDK integration is deprecated in the current plugin.  Consider trying the new experimental plugin.  For details, see http://tools.android.com/tech-docs/new-build-system/gradle-experimental.  Set "android.useDeprecatedNdk=true" in gradle.properties to continue using the current NDK integration.

         Consult IDE log for more details (Help | Show Log)

=============================gradle.properties配置如下=====================================

android.useDeprecatedNdk =true

 

Gradle build-info.xml not found for module jni_hello. Please make sure that you are using gradle plugin '2.0.0-alpha4' or higher.

 

取消掉即可.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

---恢复内容结束---