├── .gitignore ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── jeanboy │ │ └── demo │ │ └── jnitest │ │ └── ApplicationTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── jeanboy │ │ │ └── demo │ │ │ └── jnitest │ │ │ ├── MainActivity.java │ │ │ └── NdkTest.java │ ├── jni │ │ ├── Android.mk │ │ ├── Application.mk │ │ ├── NdkTest.cpp │ │ └── com_jeanboy_demo_jnitest_NdkTest.h │ └── res │ │ ├── layout │ │ └── activity_main.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── jeanboy │ └── demo │ └── jnitest │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── resources ├── 1.png ├── 10.png ├── 11.png ├── 2.png ├── 3.png ├── 4.png ├── 5.png ├── 6.png ├── 7.png ├── 8.png └── 9.png └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | .idea 4 | /local.properties 5 | /.idea/workspace.xml 6 | /.idea/libraries 7 | .DS_Store 8 | /build 9 | /captures 10 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. For the purposes of this definition, 18 | "control" means (i) the power, direct or indirect, to cause the 19 | direction or management of such entity, whether by contract or 20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 21 | outstanding shares, or (iii) beneficial ownership of such entity. 22 | 23 | "You" (or "Your") shall mean an individual or Legal Entity 24 | exercising permissions granted by this License. 25 | 26 | "Source" form shall mean the preferred form for making modifications, 27 | including but not limited to software source code, documentation 28 | source, and configuration files. 29 | 30 | "Object" form shall mean any form resulting from mechanical 31 | transformation or translation of a Source form, including but 32 | not limited to compiled object code, generated documentation, 33 | and conversions to other media types. 34 | 35 | "Work" shall mean the work of authorship, whether in Source or 36 | Object form, made available under the License, as indicated by a 37 | copyright notice that is included in or attached to the work 38 | (an example is provided in the Appendix below). 39 | 40 | "Derivative Works" shall mean any work, whether in Source or Object 41 | form, that is based on (or derived from) the Work and for which the 42 | editorial revisions, annotations, elaborations, or other modifications 43 | represent, as a whole, an original work of authorship. For the purposes 44 | of this License, Derivative Works shall not include works that remain 45 | separable from, or merely link (or bind by name) to the interfaces of, 46 | the Work and Derivative Works thereof. 47 | 48 | "Contribution" shall mean any work of authorship, including 49 | the original version of the Work and any modifications or additions 50 | to that Work or Derivative Works thereof, that is intentionally 51 | submitted to Licensor for inclusion in the Work by the copyright owner 52 | or by an individual or Legal Entity authorized to submit on behalf of 53 | the copyright owner. For the purposes of this definition, "submitted" 54 | means any form of electronic, verbal, or written communication sent 55 | to the Licensor or its representatives, including but not limited to 56 | communication on electronic mailing lists, source code control systems, 57 | and issue tracking systems that are managed by, or on behalf of, the 58 | Licensor for the purpose of discussing and improving the Work, but 59 | excluding communication that is conspicuously marked or otherwise 60 | designated in writing by the copyright owner as "Not a Contribution." 61 | 62 | "Contributor" shall mean Licensor and any individual or Legal Entity 63 | on behalf of whom a Contribution has been received by Licensor and 64 | subsequently incorporated within the Work. 65 | 66 | 2. Grant of Copyright License. Subject to the terms and conditions of 67 | this License, each Contributor hereby grants to You a perpetual, 68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 69 | copyright license to reproduce, prepare Derivative Works of, 70 | publicly display, publicly perform, sublicense, and distribute the 71 | Work and such Derivative Works in Source or Object form. 72 | 73 | 3. Grant of Patent License. Subject to the terms and conditions of 74 | this License, each Contributor hereby grants to You a perpetual, 75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 76 | (except as stated in this section) patent license to make, have made, 77 | use, offer to sell, sell, import, and otherwise transfer the Work, 78 | where such license applies only to those patent claims licensable 79 | by such Contributor that are necessarily infringed by their 80 | Contribution(s) alone or by combination of their Contribution(s) 81 | with the Work to which such Contribution(s) was submitted. If You 82 | institute patent litigation against any entity (including a 83 | cross-claim or counterclaim in a lawsuit) alleging that the Work 84 | or a Contribution incorporated within the Work constitutes direct 85 | or contributory patent infringement, then any patent licenses 86 | granted to You under this License for that Work shall terminate 87 | as of the date such litigation is filed. 88 | 89 | 4. Redistribution. You may reproduce and distribute copies of the 90 | Work or Derivative Works thereof in any medium, with or without 91 | modifications, and in Source or Object form, provided that You 92 | meet the following conditions: 93 | 94 | (a) You must give any other recipients of the Work or 95 | Derivative Works a copy of this License; and 96 | 97 | (b) You must cause any modified files to carry prominent notices 98 | stating that You changed the files; and 99 | 100 | (c) You must retain, in the Source form of any Derivative Works 101 | that You distribute, all copyright, patent, trademark, and 102 | attribution notices from the Source form of the Work, 103 | excluding those notices that do not pertain to any part of 104 | the Derivative Works; and 105 | 106 | (d) If the Work includes a "NOTICE" text file as part of its 107 | distribution, then any Derivative Works that You distribute must 108 | include a readable copy of the attribution notices contained 109 | within such NOTICE file, excluding those notices that do not 110 | pertain to any part of the Derivative Works, in at least one 111 | of the following places: within a NOTICE text file distributed 112 | as part of the Derivative Works; within the Source form or 113 | documentation, if provided along with the Derivative Works; or, 114 | within a display generated by the Derivative Works, if and 115 | wherever such third-party notices normally appear. The contents 116 | of the NOTICE file are for informational purposes only and 117 | do not modify the License. You may add Your own attribution 118 | notices within Derivative Works that You distribute, alongside 119 | or as an addendum to the NOTICE text from the Work, provided 120 | that such additional attribution notices cannot be construed 121 | as modifying the License. 122 | 123 | You may add Your own copyright statement to Your modifications and 124 | may provide additional or different license terms and conditions 125 | for use, reproduction, or distribution of Your modifications, or 126 | for any such Derivative Works as a whole, provided Your use, 127 | reproduction, and distribution of the Work otherwise complies with 128 | the conditions stated in this License. 129 | 130 | 5. Submission of Contributions. Unless You explicitly state otherwise, 131 | any Contribution intentionally submitted for inclusion in the Work 132 | by You to the Licensor shall be under the terms and conditions of 133 | this License, without any additional terms or conditions. 134 | Notwithstanding the above, nothing herein shall supersede or modify 135 | the terms of any separate license agreement you may have executed 136 | with Licensor regarding such Contributions. 137 | 138 | 6. Trademarks. This License does not grant permission to use the trade 139 | names, trademarks, service marks, or product names of the Licensor, 140 | except as required for reasonable and customary use in describing the 141 | origin of the Work and reproducing the content of the NOTICE file. 142 | 143 | 7. Disclaimer of Warranty. Unless required by applicable law or 144 | agreed to in writing, Licensor provides the Work (and each 145 | Contributor provides its Contributions) on an "AS IS" BASIS, 146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 147 | implied, including, without limitation, any warranties or conditions 148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 149 | PARTICULAR PURPOSE. You are solely responsible for determining the 150 | appropriateness of using or redistributing the Work and assume any 151 | risks associated with Your exercise of permissions under this License. 152 | 153 | 8. Limitation of Liability. In no event and under no legal theory, 154 | whether in tort (including negligence), contract, or otherwise, 155 | unless required by applicable law (such as deliberate and grossly 156 | negligent acts) or agreed to in writing, shall any Contributor be 157 | liable to You for damages, including any direct, indirect, special, 158 | incidental, or consequential damages of any character arising as a 159 | result of this License or out of the use or inability to use the 160 | Work (including but not limited to damages for loss of goodwill, 161 | work stoppage, computer failure or malfunction, or any and all 162 | other commercial damages or losses), even if such Contributor 163 | has been advised of the possibility of such damages. 164 | 165 | 9. Accepting Warranty or Additional Liability. While redistributing 166 | the Work or Derivative Works thereof, You may choose to offer, 167 | and charge a fee for, acceptance of support, warranty, indemnity, 168 | or other liability obligations and/or rights consistent with this 169 | License. However, in accepting such obligations, You may act only 170 | on Your own behalf and on Your sole responsibility, not on behalf 171 | of any other Contributor, and only if You agree to indemnify, 172 | defend, and hold each Contributor harmless for any liability 173 | incurred by, or claims asserted against, such Contributor by reason 174 | of your accepting any such warranty or additional liability. 175 | 176 | END OF TERMS AND CONDITIONS 177 | 178 | APPENDIX: How to apply the Apache License to your work. 179 | 180 | To apply the Apache License to your work, attach the following 181 | boilerplate notice, with the fields enclosed by brackets "{}" 182 | replaced with your own identifying information. (Don't include 183 | the brackets!) The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Android-JNITest 2 | Android Studio JNI environment. 3 | Android Studio JNI环境配置。 4 | 5 | ------ 6 | 7 | ## 介绍 8 | 9 | Android Studio + NDK来实现JNI。 10 | 11 | 什么是NDK与JNI技术？ 12 | NDK：Native Development Kit 13 | 14 | The NDK is a toolset that allows you to implement parts of your app using native-code languages such as C and C++.（谷歌官方文档） 15 | 16 | 大致意思：NDK是一个工具，可以让你实现你的应用程序使用本地代码的语言，如C和C++的部分。 17 | 18 | JNI：Java Native Interface 19 | 它提供了若干的API实现了Java和其他语言的通信（主要是C&C++）。从Java1.1开始，JNI标准成为java平台的一部分，它允许Java代码和其他语言写的代码进行交互。 20 | 21 | ## 准备工作 22 | 23 | * 1.搭建好Android Studio开发环境。 24 | * 2.新建一个Android项目 25 | 26 | ## Android Studio配置NDK 27 | * 1.如图所示下载LLDB+NDK并安装。 28 | ![第一][1] 29 | 30 | * 2.配置安装好的NDK路径。 31 | ![第二][2] 32 | 33 | * 3.配置一些快捷方式。 34 | ![第三][3] 35 | ![javah][4] 36 | ![ndk-build三][5] 37 | ![ndk-build clean][6] 38 | ```text 39 | javah 用于生成头文件 40 | Program：$JDKPath$/bin/javah 41 | 注意：这个命令我加上了-encoding UTF-8指定编码，你可以改成你工程的编码。 42 | Parameters：-encoding UTF-8 -d ../jni -jni $FileClass$ 43 | Working directory：$SourcepathEntry$\..\java 44 | 45 | ndk-build 用于构建so包 46 | 注意：MAC/Linux用ndk-build，没有.cmd后缀 47 | Program：C:\Develop\Android\sdk\ndk-bundle\ndk-build.cmd 48 | Parameters：什么都不用填 49 | Working directory：$ModuleFileDir$\src\main 50 | 51 | ndk-build clean 清除so包 52 | 注意：MAC/Linux用ndk-build，没有.cmd后缀 53 | Program：C:\Develop\Android\sdk\ndk-bundle\ndk-build.cmd 54 | Parameters：clean 55 | Working directory：$ModuleFileDir$\src\main 56 | ``` 57 | 58 | ## 配置项目 59 | * 在gradle.properties文件中添加 60 | ```xml 61 | android.useDeprecatedNdk=true 62 | ``` 63 | * 修改文件目录如下 64 | ![修改文件目录][7] 65 | 66 | * 参考[Android Studio Project Site](http://tools.android.com/tech-docs/new-build-system/gradle-experimental) 67 | 68 | 69 | * 1.修改根目录下的build.gradle 70 | ```xml 71 | buildscript { 72 | repositories { 73 | jcenter() 74 | } 75 | dependencies { 76 | // 修改build:gradle为build:gradle-experimental 77 | classpath "com.android.tools.build:gradle-experimental:0.7.0" 78 | // classpath 'com.android.tools.build:gradle:2.1.2' 79 | } 80 | } 81 | 82 | allprojects { 83 | repositories { 84 | jcenter() 85 | } 86 | } 87 | //添加 88 | task clean(type: Delete) { 89 | delete rootProject.buildDir 90 | } 91 | ``` 92 | 93 | * 2.修改gradle->wrapper->gradle-wrapper.properties 94 | ```xml 95 | #Mon Dec 28 10:00:20 PST 2015 96 | distributionBase=GRADLE_USER_HOME 97 | distributionPath=wrapper/dists 98 | zipStoreBase=GRADLE_USER_HOME 99 | zipStorePath=wrapper/dists 100 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip//修改这里的版本号 101 | ``` 102 | * gradle-experimental与gradle-wrapper相对应的版本号如下图 103 | ![版本号对比][8] 104 | 105 | * 3.修改app->build.gradle 106 | ```xml 107 | 修改之前的 108 | apply plugin: 'com.android.application' 109 | 110 | android { 111 | compileSdkVersion 23 112 | buildToolsVersion "23.0.3" 113 | 114 | defaultConfig { 115 | applicationId "com.jeanboy.demo.jnitest" 116 | minSdkVersion 15 117 | targetSdkVersion 23 118 | versionCode 1 119 | versionName "1.0" 120 | } 121 | buildTypes { 122 | release { 123 | minifyEnabled false 124 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 125 | } 126 | } 127 | } 128 | 129 | dependencies { 130 | compile fileTree(dir: 'libs', include: ['*.jar']) 131 | compile 'com.android.support:appcompat-v7:23.4.0' 132 | } 133 | ``` 134 | ```xml 135 | 修改之后的 136 | apply plugin: 'com.android.model.application'//修改 137 | //apply plugin: 'com.android.application' 138 | 139 | model {//修改 140 | android { 141 | compileSdkVersion 23 142 | buildToolsVersion "23.0.3" 143 | 144 | defaultConfig { 145 | applicationId "com.jeanboy.demo.jnitest" 146 | minSdkVersion.apiLevel 15 147 | targetSdkVersion.apiLevel 23 148 | versionCode 1 149 | versionName "1.0" 150 | } 151 | 152 | ndk {//指定生成的lib，比如此时生成native.so 153 | moduleName "NdkTest" 154 | } 155 | 156 | buildTypes { 157 | release { 158 | minifyEnabled false 159 | proguardFiles.add(file("proguard-rules.pro"))//修改 160 | } 161 | } 162 | 163 | } 164 | 165 | } 166 | 167 | dependencies { 168 | compile fileTree(dir: 'libs', include: ['*.jar']) 169 | compile 'com.android.support:appcompat-v7:23.4.0' 170 | } 171 | ``` 172 | 173 | * 4.创建jni文件夹 174 | ![创建jni文件夹][9] 175 | 176 | * 5.创建NdkTest.java 177 | ```java 178 | public class NdkTest { 179 | static { 180 | System.loadLibrary("NdkTest");//加载要使用的so文件 181 | } 182 | //生命native方法 183 | public static native String getString(); 184 | public static native int doAdd(int param1,int param2); 185 | } 186 | ``` 187 | 188 | * 6.生成NdkTest.h并创建NdkTest.cpp实现NdkTest.h中的native方法 189 | ![生成NdkTest.h][10] 190 | 191 | NdkTest.h文件内容 192 | ```c 193 | /* DO NOT EDIT THIS FILE - it is machine generated */ 194 | #include 195 | /* Header for class com_jeanboy_demo_jnitest_NdkTest */ 196 | 197 | #ifndef _Included_com_jeanboy_demo_jnitest_NdkTest 198 | #define _Included_com_jeanboy_demo_jnitest_NdkTest 199 | #ifdef __cplusplus 200 | extern "C" { 201 | #endif 202 | /* 203 | * Class: com_jeanboy_demo_jnitest_NdkTest 204 | * Method: getString 205 | * Signature: ()Ljava/lang/String; 206 | */ 207 | JNIEXPORT jstring JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_getString 208 | (JNIEnv *, jclass);//待实现的native方法 209 | 210 | /* 211 | * Class: com_jeanboy_demo_jnitest_NdkTest 212 | * Method: doAdd 213 | * Signature: (II)I 214 | */ 215 | JNIEXPORT jint JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_doAdd 216 | (JNIEnv *, jclass, jint, jint);//待实现的native方法 217 | 218 | #ifdef __cplusplus 219 | } 220 | #endif 221 | #endif 222 | ``` 223 | 224 | NdkTest.cpp文件内容 225 | ```c 226 | #include "com_jeanboy_demo_jnitest_NdkTest.h" 227 | 228 | JNIEXPORT jstring JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_getString 229 | (JNIEnv *env, jclass type) {//具体实现 230 | 231 | return env->NewStringUTF("hello world!!!"); 232 | } 233 | 234 | /* 235 | * Class: com_jeanboy_demo_jnitest_NdkTest 236 | * Method: doAdd 237 | * Signature: (II)I 238 | */ 239 | JNIEXPORT jint JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_doAdd 240 | (JNIEnv *env, jclass type, jint param1, jint param2) {//具体实现 241 | 242 | return param1 + param1; 243 | } 244 | ``` 245 | 246 | 247 | * 7.在jni文件夹下创建Android.mk和Application.mk 248 | 249 | Android.mk文件内容 250 | ```c 251 | LOCAL_PATH := $(call my-dir) 252 | include $(CLEAR_VARS) 253 | 254 | LOCAL_MODULE := NdkTest//moduleName 255 | LOCAL_SRC_FILES := NdkTest.cpp//上面创建的NdkTest.cpp 256 | include $(BUILD_SHARED_LIBRARY) 257 | ``` 258 | 259 | Application.mk文件内容 260 | ```c 261 | APP_MODULES := NdkTest 262 | /*这个变量是可选的，如果没有定义，NDK将由在Android.mk中声明的默认的模块编译，并且包含所有的子文件(makefile文件)； 263 | 如果APP_MODULES定义了，它不许是一个空格分隔的模块列表，这个模块名字被定义在Android.mk文件中的LOCAL_MODULE中。 264 | 注意NDK会自动计算模块的依赖*/ 265 | APP_ABI := all//支持所有平台，也可以指定平台空格隔开armeabi armeabi-v7a x86 266 | ``` 267 | 268 | ```text 269 | Android系统目前支持的CPU架构： 270 | 271 | ARMv5，ARMv7 (从2010年起) 272 | x86 (从2011年起) 273 | MIPS (从2012年起) 274 | ARMv8，MIPS64和x86_64 (从2014年起) 275 | 276 | 每一个CPU架构对应一个ABI 277 | CPU架构 ABI 278 | ARMv5 ---> armeabi 279 | ARMv7 ---> armeabi-v7a 280 | x86 ---> x86 281 | MIPS ---> mips 282 | ARMv8 ---> arm64-v8a 283 | MIPS64 ---> mips64 284 | x86_64 ---> x86_64 285 | 286 | armeabi：默认选项，将创建以基于ARM* v5TE 的设备为目标的库。 具有这种目标 287 | 的浮点运算使用软件浮点运算。 使用此ABI（二进制接口）创建的二进制代码将可以 288 | 在所有 ARM*设备上运行。所以armeabi通用性很强。但是速度慢 289 | 290 | armeabi-v7a：创建支持基于ARM* v7 的设备的库，并将使用硬件FPU指令。 291 | armeabi-v7a是针对有浮点运算或高级扩展功能的arm v7 cpu。 292 | 293 | mips：MIPS是世界上很流行的一种RISC处理器。MIPS的意思是“无内部互锁流水级 294 | 的微处理器”(Microprocessor without interlocked piped stages)，其机 295 | 制是尽量利用软件办法避免流水线中的数据相关问题。 296 | 297 | x86：支持基于硬件的浮点运算的IA-32 指令集。x86是可以兼容armeabi平台运行 298 | 的，无论是armeabi-v7a还是armeabi，同时带来的也是性能上的损耗，另外需要 299 | 指出的是，打包出的x86的so，总会比armeabi平台的体积更小。 300 | 301 | 总结 302 | 如果项目只包含了 armeabi，那么在所有Android设备都可以运行； 303 | 如果项目只包含了 armeabi-v7a，除armeabi架构的设备外都可以运行； 304 | 如果项目只包含了 x86，那么armeabi架构和armeabi-v7a的Android设备是无法 305 | 运行的； 306 | 如果同时包含了 armeabi，armeabi-v7a和x86，所有设备都可以运行，程序在运 307 | 行的时候去加载不同平台对应的so，这是较为完美的一种解决方案，同时也会导致 308 | 包变大。 309 | ``` 310 | 311 | * 8.生成so文件 312 | ![生成so文件][11] 313 | 314 | * 9.在需要native方法的地方直接调用 315 | ```java 316 | NdkTest.getString(); 317 | NdkTest.doAdd(5, 12); 318 | ``` 319 | 320 | * 10.运行app试试效果吧 321 | 322 | ## 关于我 323 | 324 | 如果对你有帮助，请 star 一下，然后 follow 我，给我增加一下分享动力，谢谢！ 325 | 326 | 如果你有什么疑问或者问题，可以提交 issue 和 request，发邮件给我 jeanboy@foxmail.com 。 327 | 328 | 或者加入下面的 QQ 群来一起学习交流。 329 | 330 | Android技术进阶：386463747 331 | 332 | ## License 333 | 334 | Copyright 2015 jeanboy 335 | 336 | Licensed under the Apache License, Version 2.0 (the "License"); 337 | you may not use this file except in compliance with the License. 338 | You may obtain a copy of the License at 339 | 340 | http://www.apache.org/licenses/LICENSE-2.0 341 | 342 | Unless required by applicable law or agreed to in writing, software 343 | distributed under the License is distributed on an "AS IS" BASIS, 344 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 345 | See the License for the specific language governing permissions and 346 | limitations under the License. 347 | 348 | 349 | 350 | 351 | [1]:https://github.com/freekite/Android-JNITest/blob/master/resources/1.png 352 | [2]:https://github.com/freekite/Android-JNITest/blob/master/resources/2.png 353 | [3]:https://github.com/freekite/Android-JNITest/blob/master/resources/3.png 354 | [4]:https://github.com/freekite/Android-JNITest/blob/master/resources/4.png 355 | [5]:https://github.com/freekite/Android-JNITest/blob/master/resources/5.png 356 | [6]:https://github.com/freekite/Android-JNITest/blob/master/resources/6.png 357 | [7]:https://github.com/freekite/Android-JNITest/blob/master/resources/7.png 358 | [8]:https://github.com/freekite/Android-JNITest/blob/master/resources/8.png 359 | [9]:https://github.com/freekite/Android-JNITest/blob/master/resources/9.png 360 | [10]:https://github.com/freekite/Android-JNITest/blob/master/resources/10.png 361 | [11]:https://github.com/freekite/Android-JNITest/blob/master/resources/11.png 362 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.model.application' 2 | //apply plugin: 'com.android.application' 3 | 4 | model { 5 | android { 6 | compileSdkVersion 23 7 | buildToolsVersion "23.0.3" 8 | 9 | defaultConfig { 10 | applicationId "com.jeanboy.demo.jnitest" 11 | minSdkVersion.apiLevel 15 12 | targetSdkVersion.apiLevel 23 13 | versionCode 1 14 | versionName "1.0" 15 | 16 | buildConfigFields { 17 | create() { 18 | type "int" 19 | name "VALUE" 20 | value "1" 21 | } 22 | } 23 | } 24 | 25 | ndk {//指定生成的lib，比如此时生成native.so 26 | moduleName "NdkTest" 27 | } 28 | 29 | buildTypes { 30 | release { 31 | minifyEnabled false 32 | proguardFiles.add(file("proguard-rules.pro")) 33 | } 34 | } 35 | 36 | } 37 | 38 | 39 | // android.productFlavors { 40 | // // for detailed abiFilter descriptions, refer to "Supported ABIs" @ 41 | // // https://developer.android.com/ndk/guides/abis.html#sa 42 | // create("arm") { 43 | // ndk.abiFilters.add("armeabi") 44 | // } 45 | // create("arm7") { 46 | // ndk.abiFilters.add("armeabi-v7a") 47 | // } 48 | // create("arm8") { 49 | // ndk.abiFilters.add("arm64-v8a") 50 | // } 51 | // create("x86") { 52 | // ndk.abiFilters.add("x86") 53 | // } 54 | // create("x86-64") { 55 | // ndk.abiFilters.add("x86_64") 56 | // } 57 | // create("mips") { 58 | // ndk.abiFilters.add("mips") 59 | // } 60 | // create("mips-64") { 61 | // ndk.abiFilters.add("mips64") 62 | // } 63 | // // To include all cpu architectures, leaves abiFilters empty 64 | // create("all") 65 | // } 66 | 67 | } 68 | 69 | dependencies { 70 | compile fileTree(dir: 'libs', include: ['*.jar']) 71 | compile 'com.android.support:appcompat-v7:23.4.0' 72 | } 73 | 74 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in C:\Develop\Android\sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/jeanboy/demo/jnitest/ApplicationTest.java: -------------------------------------------------------------------------------- 1 | package com.jeanboy.demo.jnitest; 2 | 3 | import android.app.Application; 4 | import android.test.ApplicationTestCase; 5 | 6 | /** 7 | * Testing Fundamentals 8 | */ 9 | public class ApplicationTest extends ApplicationTestCase { 10 | public ApplicationTest() { 11 | super(Application.class); 12 | } 13 | } -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /app/src/main/java/com/jeanboy/demo/jnitest/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.jeanboy.demo.jnitest; 2 | 3 | import android.os.Bundle; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.view.View; 6 | import android.widget.Toast; 7 | 8 | public class MainActivity extends AppCompatActivity { 9 | 10 | 11 | @Override 12 | protected void onCreate(Bundle savedInstanceState) { 13 | super.onCreate(savedInstanceState); 14 | setContentView(R.layout.activity_main); 15 | } 16 | 17 | public void jniTest(View v) { 18 | Toast.makeText(this, NdkTest.getString(), Toast.LENGTH_SHORT).show(); 19 | } 20 | 21 | public void jniTest2(View v) { 22 | 23 | Toast.makeText(this, String.valueOf(NdkTest.doAdd(5, 12)), Toast.LENGTH_SHORT).show(); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /app/src/main/java/com/jeanboy/demo/jnitest/NdkTest.java: -------------------------------------------------------------------------------- 1 | package com.jeanboy.demo.jnitest; 2 | 3 | /** 4 | * Created by Next on 2016/8/12. 5 | */ 6 | public class NdkTest { 7 | static { 8 | System.loadLibrary("NdkTest"); 9 | } 10 | 11 | public static native String getString(); 12 | public static native int doAdd(int param1,int param2); 13 | } 14 | -------------------------------------------------------------------------------- /app/src/main/jni/Android.mk: -------------------------------------------------------------------------------- 1 | LOCAL_PATH := $(call my-dir) 2 | include $(CLEAR_VARS) 3 | 4 | LOCAL_MODULE := NdkTest 5 | LOCAL_SRC_FILES := NdkTest.cpp 6 | include $(BUILD_SHARED_LIBRARY) -------------------------------------------------------------------------------- /app/src/main/jni/Application.mk: -------------------------------------------------------------------------------- 1 | APP_MODULES := NdkTest 2 | 3 | APP_ABI := all -------------------------------------------------------------------------------- /app/src/main/jni/NdkTest.cpp: -------------------------------------------------------------------------------- 1 | // 2 | // Created by Next on 2016/8/12. 3 | // 4 | 5 | #include "com_jeanboy_demo_jnitest_NdkTest.h" 6 | 7 | JNIEXPORT jstring JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_getString 8 | (JNIEnv *env, jclass type) { 9 | 10 | return env->NewStringUTF("hello world!!!"); 11 | } 12 | 13 | /* 14 | * Class: com_jeanboy_demo_jnitest_NdkTest 15 | * Method: doAdd 16 | * Signature: (II)I 17 | */ 18 | JNIEXPORT jint JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_doAdd 19 | (JNIEnv *env, jclass type, jint param1, jint param2) { 20 | 21 | return param1 + param1; 22 | } 23 | 24 | -------------------------------------------------------------------------------- /app/src/main/jni/com_jeanboy_demo_jnitest_NdkTest.h: -------------------------------------------------------------------------------- 1 | /* DO NOT EDIT THIS FILE - it is machine generated */ 2 | #include 3 | /* Header for class com_jeanboy_demo_jnitest_NdkTest */ 4 | 5 | #ifndef _Included_com_jeanboy_demo_jnitest_NdkTest 6 | #define _Included_com_jeanboy_demo_jnitest_NdkTest 7 | #ifdef __cplusplus 8 | extern "C" { 9 | #endif 10 | /* 11 | * Class: com_jeanboy_demo_jnitest_NdkTest 12 | * Method: getString 13 | * Signature: ()Ljava/lang/String; 14 | */ 15 | JNIEXPORT jstring JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_getString 16 | (JNIEnv *, jclass); 17 | 18 | /* 19 | * Class: com_jeanboy_demo_jnitest_NdkTest 20 | * Method: doAdd 21 | * Signature: (II)I 22 | */ 23 | JNIEXPORT jint JNICALL Java_com_jeanboy_demo_jnitest_NdkTest_doAdd 24 | (JNIEnv *, jclass, jint, jint); 25 | 26 | #ifdef __cplusplus 27 | } 28 | #endif 29 | #endif 30 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 12 | 13 |