├── .gitignore
├── .idea
├── encodings.xml
├── gradle.xml
├── misc.xml
├── modules.xml
└── runConfigurations.xml
├── README.md
├── app
├── .gitignore
├── CMakeLists.txt
├── build.gradle
├── jni
│ └── armeabi
│ │ └── libnative-lib.so
├── libs
│ └── armeabi
│ │ └── libgodemo.so
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── ejin
│ │ └── ndk
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── ejin
│ │ │ └── ndk
│ │ │ └── MainActivity.java
│ ├── jniLibs
│ │ ├── armeabi
│ │ │ └── libgodemo.so
│ │ ├── include
│ │ │ └── libgodemo.h
│ │ └── native-lib.c
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ └── ic_launcher_background.xml
│ │ ├── layout
│ │ └── activity_main.xml
│ │ ├── mipmap-hdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-mdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── com
│ └── ejin
│ └── ndk
│ └── ExampleUnitTest.java
├── build.gradle
├── godemo.go
├── gradle.properties
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
├── settings.gradle
└── test.c
/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/workspace.xml
5 | /.idea/libraries
6 | .DS_Store
7 | /build
8 | /captures
9 | .externalNativeBuild
10 |
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/.idea/runConfigurations.xml:
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/README.md:
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https://raw.githubusercontent.com/ejin66/golang-android/63176862db073b6b16b4d676cf255808420fae9d/README.md
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/app/.gitignore:
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1 | /build
2 |
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/app/CMakeLists.txt:
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1 | # For more information about using CMake with Android Studio, read the
2 | # documentation: https://d.android.com/studio/projects/add-native-code.html
3 |
4 | # Sets the minimum version of CMake required to build the native library.
5 |
6 | #设置cmake支持的最小版本
7 | cmake_minimum_required(VERSION 3.4.1)
8 |
9 | # Creates and names a library, sets it as either STATIC
10 | # or SHARED, and provides the relative paths to its source code.
11 | # You can define multiple libraries, and CMake builds them for you.
12 | # Gradle automatically packages shared libraries with your APK.
13 |
14 | #设置生成的so动态库最后输出的路径
15 | set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/jni/${ANDROID_ABI})
16 |
17 | #头文件路径
18 | include_directories("src/main/jniLibs/include")
19 |
20 | #配置文件
21 | file(GLOB native_srcs "src/main/jniLibs/*.c")
22 |
23 | #配置生成的so库的配置。
24 | #第一次参数：生产的so库名称
25 | #第二个参数：生成的so库的类型，SHARED代表动态链接库.so，STATIC代表静态库.a
26 | #第三个开始的参数：生成库所包括的代码文件。可以枚举，也可以用上面定义的文件集合：{native_srcs}
27 | add_library( # Sets the name of the library.
28 | native-lib
29 |
30 | # Sets the library as a shared library.
31 | SHARED
32 |
33 | # Provides a relative path to your source file(s).
34 | ${native_srcs} )
35 |
36 | add_library(godemo
37 | SHARED
38 | IMPORTED
39 | )
40 |
41 | set_target_properties(godemo
42 | PROPERTIES IMPORTED_LOCATION
43 | ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libgodemo.so
44 | )
45 |
46 | # Searches for a specified prebuilt library and stores the path as a
47 | # variable. Because CMake includes system libraries in the search path by
48 | # default, you only need to specify the name of the public NDK library
49 | # you want to add. CMake verifies that the library exists before
50 | # completing its build.
51 |
52 | #查找库。
53 | #第一个参数：定义变量名，表示查找的库
54 | #第二个参数：需要查找的本地库
55 | find_library( # Sets the name of the path variable.
56 | log-lib
57 |
58 | # Specifies the name of the NDK library that
59 | # you want CMake to locate.
60 | log )
61 |
62 | # Specifies libraries CMake should link to your target library. You
63 | # can link multiple libraries, such as libraries you define in this
64 | # build script, prebuilt third-party libraries, or system libraries.
65 |
66 | #关联本地库到目标生成库
67 | target_link_libraries( # Specifies the target library.
68 | native-lib
69 |
70 | ${CMAKE_SOURCE_DIR}/src/main/jniLibs/${ANDROID_ABI}/libgodemo.so
71 | # Links the target library to the log library
72 | # included in the NDK.
73 | ${log-lib} )
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 24
5 | defaultConfig {
6 | applicationId "com.ejin.ndk"
7 | minSdkVersion 15
8 | targetSdkVersion 24
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
12 | externalNativeBuild {
13 | cmake {
14 | cppFlags ""
15 | abiFilters "armeabi"//, "armeabi-v7a", "arm64-v8a"
16 | }
17 | }
18 | }
19 | buildTypes {
20 | release {
21 | minifyEnabled false
22 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
23 | }
24 | }
25 | externalNativeBuild {
26 | cmake {
27 | path "CMakeLists.txt"
28 | }
29 | }
30 |
31 | sourceSets {
32 | main {
33 | jniLibs.srcDirs = ['libs']
34 | }
35 | }
36 | }
37 |
38 | dependencies {
39 | implementation fileTree(dir: 'libs', include: ['*.jar'])
40 | implementation 'com.android.support:appcompat-v7:24.1.0'
41 | implementation 'com.android.support.constraint:constraint-layout:1.1.3'
42 | // testImplementation 'junit:junit:4.12'
43 | // androidTestImplementation 'com.android.support.test:runner:1.0.2'
44 | // androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
45 | }
46 |
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/app/jni/armeabi/libnative-lib.so:
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https://raw.githubusercontent.com/ejin66/golang-android/63176862db073b6b16b4d676cf255808420fae9d/app/jni/armeabi/libnative-lib.so
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/app/libs/armeabi/libgodemo.so:
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https://raw.githubusercontent.com/ejin66/golang-android/63176862db073b6b16b4d676cf255808420fae9d/app/libs/armeabi/libgodemo.so
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
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/app/src/androidTest/java/com/ejin/ndk/ExampleInstrumentedTest.java:
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1 | package com.ejin.ndk;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumented test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() throws Exception {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("com.ejin.ndk", appContext.getPackageName());
25 | }
26 | }
27 |
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/app/src/main/AndroidManifest.xml:
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/app/src/main/java/com/ejin/ndk/MainActivity.java:
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1 | package com.ejin.ndk;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 | import android.widget.TextView;
6 |
7 | public class MainActivity extends AppCompatActivity {
8 |
9 | // Used to load the 'native-lib' library on application startup.
10 | static {
11 | System.loadLibrary("godemo");
12 | System.loadLibrary("native-lib");
13 | }
14 |
15 | @Override
16 | protected void onCreate(Bundle savedInstanceState) {
17 | super.onCreate(savedInstanceState);
18 | setContentView(R.layout.activity_main);
19 |
20 | // Example of a call to a native method
21 | TextView tv = (TextView) findViewById(R.id.sample_text);
22 | tv.setText(stringFromJNI("ejin"));
23 | }
24 |
25 | /**
26 | * A native method that is implemented by the 'native-lib' native library,
27 | * which is packaged with this application.
28 | */
29 | public native String stringFromJNI(String s);
30 | }
31 |
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/app/src/main/jniLibs/armeabi/libgodemo.so:
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/app/src/main/jniLibs/include/libgodemo.h:
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1 | /* Code generated by cmd/cgo; DO NOT EDIT. */
2 |
3 | /* package command-line-arguments */
4 |
5 |
6 | #line 1 "cgo-builtin-prolog"
7 |
8 | #include /* for ptrdiff_t below */
9 |
10 | #ifndef GO_CGO_EXPORT_PROLOGUE_H
11 | #define GO_CGO_EXPORT_PROLOGUE_H
12 |
13 | typedef struct { const char *p; ptrdiff_t n; } _GoString_;
14 |
15 | #endif
16 |
17 | /* Start of preamble from import "C" comments. */
18 |
19 |
20 |
21 |
22 | /* End of preamble from import "C" comments. */
23 |
24 |
25 | /* Start of boilerplate cgo prologue. */
26 | #line 1 "cgo-gcc-export-header-prolog"
27 |
28 | #ifndef GO_CGO_PROLOGUE_H
29 | #define GO_CGO_PROLOGUE_H
30 |
31 | typedef signed char GoInt8;
32 | typedef unsigned char GoUint8;
33 | typedef short GoInt16;
34 | typedef unsigned short GoUint16;
35 | typedef int GoInt32;
36 | typedef unsigned int GoUint32;
37 | typedef long long GoInt64;
38 | typedef unsigned long long GoUint64;
39 | typedef GoInt32 GoInt;
40 | typedef GoUint32 GoUint;
41 | typedef __SIZE_TYPE__ GoUintptr;
42 | typedef float GoFloat32;
43 | typedef double GoFloat64;
44 | typedef float _Complex GoComplex64;
45 | typedef double _Complex GoComplex128;
46 |
47 | /*
48 | static assertion to make sure the file is being used on architecture
49 | at least with matching size of GoInt.
50 | */
51 | typedef char _check_for_32_bit_pointer_matching_GoInt[sizeof(void*)==32/8 ? 1:-1];
52 |
53 | typedef _GoString_ GoString;
54 | typedef void *GoMap;
55 | typedef void *GoChan;
56 | typedef struct { void *t; void *v; } GoInterface;
57 | typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
58 |
59 | #endif
60 |
61 | /* End of boilerplate cgo prologue. */
62 |
63 | #ifdef __cplusplus
64 | extern "C" {
65 | #endif
66 |
67 |
68 | extern char* hello(GoString p0);
69 |
70 | #ifdef __cplusplus
71 | }
72 | #endif
73 |
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/app/src/main/jniLibs/native-lib.c:
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1 | #include
2 | #include
3 | #include "include/libgodemo.h"
4 |
5 |
6 | JNIEXPORT jstring JNICALL
7 | Java_com_ejin_ndk_MainActivity_stringFromJNI(JNIEnv *env, jobject instance, jstring s_) {
8 | const char *s = (*env)->GetStringUTFChars(env, s_, 0);
9 |
10 | GoString goString;
11 | goString.p = s;
12 | goString.n = strlen(s);
13 |
14 | return (*env)->NewStringUTF(env, hello(goString));
15 | }
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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