{"id":6668,"date":"2023-08-17T11:07:27","date_gmt":"2023-08-17T03:07:27","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=6668"},"modified":"2023-08-17T11:07:27","modified_gmt":"2023-08-17T03:07:27","slug":"c%e8%83%bd%e5%bc%80%e5%8f%91%e5%ae%89%e5%8d%93app%e6%98%af%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/6668\/","title":{"rendered":"c\u80fd\u5f00\u53d1\u5b89\u5353app\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff1f"},"content":{"rendered":"

C\u8bed\u8a00\u5f00\u53d1\u5b89\u5353APP\u662f\u5b8c\u5168\u53ef\u80fd\u7684\uff0c\u867d\u7136\u8fd9\u5e76\u4e0d\u662fAndroid\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4e2d\u7684\u4e3b\u6d41\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4e3b\u6d41\u7684Android\u5f00\u53d1\u8bed\u8a00\u4e3aJava\u548cKotlin\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4e86\u89e3\u5982\u4f55\u4f7f\u7528C\u8bed\u8a00\u548cAndroid NDK\uff08Native Development Kit\uff0c\u539f\u751f\u5f00\u53d1\u5de5\u5177\u5305\uff09\u5f00\u53d1\u7b80\u5355\u7684\u5b89\u5353App\u3002<\/p>\n

### \u539f\u7406<\/p>\n

C\u8bed\u8a00\u5f00\u53d1\u5b89\u5353APP\u7684\u539f\u7406\u4e0eJava\/Kotlin\u5f00\u53d1\u7684\u5e94\u7528\u7a0b\u5e8f\u76f8\u4f3c\u3002\u5dee\u5f02\u5728\u4e8e\uff0c\u4f7f\u7528C\u8bed\u8a00\u5f00\u53d1\u7684\u5b89\u5353\u7a0b\u5e8f\u662f\u57fa\u4e8eAndroid NDK\u8fdb\u884c\u7684\uff0c\u800c\u4e0d\u662f\u57fa\u4e8eAndroid SDK\u3002\u901a\u8fc7\u4f7f\u7528NDK\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u7f16\u5199\u539f\u751f\u4ee3\u7801\uff08C\/C++\uff09\u5e76\u5c06\u8fd9\u4e9b\u4ee3\u7801\u7f16\u8bd1\u4e3a\u5e73\u53f0\u7279\u5b9a\u7684\u5171\u4eab\u5e93\uff08\u4f8b\u5982\u201clibmyapp.so\u201d\uff09\u3002\u7136\u540e\uff0c\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u52a0\u8f7d\u5e76\u8fd0\u884c\u8fd9\u4e9b\u539f\u751f\u5e93\uff0c\u4ece\u800c\u4e3a\u7528\u6237\u63d0\u4f9b\u6240\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n

### \u51c6\u5907\u5de5\u4f5c<\/p>\n

1. \u4e0b\u8f7d\u5e76\u5b89\u88c5Android Studio\u3002\u53ef\u4ee5\u5728\u201chttps:\/\/developer.android.com\/studio\u201d\u4e0b\u8f7d\u3002<\/p>\n

2. \u5b89\u88c5\u652f\u6301C\/C++\u7684Android Studio\u63d2\u4ef6\u3002\u5728Android Studio\u4e2d\u5b89\u88c5C\/C++\u652f\u6301\uff1a\u6253\u5f00Settings->Plugins->\u641c\u7d22\u201cC\/C++\u201d\uff0c\u7136\u540e\u70b9\u51fb\u5b89\u88c5\u3002<\/p>\n

### \u521b\u5efaAndroid NDK\u9879\u76ee<\/p>\n

1. \u542f\u52a8Android Studio\u5e76\u9009\u62e9\u201cStart a new Android Studio project\u201d\u3002<\/p>\n

2. \u5728\u57fa\u7840\u8bbe\u7f6e\u4e2d\uff0c\u9009\u62e9\u201cEmpty Activity\u201d\u3002<\/p>\n

3. \u4e3a\u60a8\u7684\u9879\u76ee\u547d\u540d\uff0c\u5e76\u9009\u62e9\u9879\u76ee\u7684\u4f4d\u7f6e\u3002\u7136\u540e\u9009\u62e9\u652f\u6301\u7684\u6700\u4f4eAndroid API\u7ea7\u522b\uff0c\u7136\u540e\u5355\u51fb\u201cFinish\u201d\u3002<\/p>\n

### \u914d\u7f6e\u9879\u76ee\u4ee5\u652f\u6301C\u4ee3\u7801<\/p>\n

1. \u6253\u5f00\u9879\u76ee\u7684`build.gradle` \u6587\u4ef6\uff0c\u5728`defaultConfig`\u90e8\u5206\u6dfb\u52a0ndk\u9009\u9879\u3002\u5728`defaultConfig`\u4ee3\u7801\u5757\u4e0b\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`<\/p>\n

ndk {<\/p>\n

abiFilters “armeabi-v7a”, “x86”<\/p>\n

}<\/p>\n

externalNativeBuild {<\/p>\n

cmake {<\/p>\n

cppFlags “-std=c++11 -frtti -fexceptions”<\/p>\n

arguments “-DANDROID_STL=c++_shared”<\/p>\n

}<\/p>\n

}<\/p>\n

“`<\/p>\n

2. \u540c\u6837\uff0c\u5728`build.gradle`\u6587\u4ef6\u4e2d\uff0c\u627e\u5230dependencies\u90e8\u5206\uff0c\u5e76\u6dfb\u52a0\u4f9d\u8d56`implementation ‘com.android.support:appcompat-v7:28.0.0’`\u3002\u60a8\u7684dependencies\u4ee3\u7801\u5757\u5e94\u5982\u4e0b\uff1a<\/p>\n

“`<\/p>\n

dependencies {<\/p>\n

implementation fileTree(dir: ‘libs’, include: [‘*.jar’])<\/p>\n

implementation ‘com.android.support:appcompat-v7:28.0.0’<\/p>\n

implementation ‘com.android.\u5b89\u5353app\u5236\u4f5c<\/a>support.constraint:constraint-layout:1.1.3′<\/p>\n

testImplementation ‘junit:junit:4.12’<\/p>\n

androidTestImplementation ‘com.android.support.test:runner:1.0.2’<\/p>\n

androidTestImplementation ‘com.android.support.test.espresso:espresso-core:3.0.2’<\/p>\n

}<\/p>\n

“`<\/p>\n

3. \u5728app\/src\/main\/\u76ee\u5f55\u4e0b\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a`jni`\u7684\u65b0\u6587\u4ef6\u5939\u3002<\/p>\n

4. \u5728`jni`\u6587\u4ef6\u5939\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a`Android.mk`\u7684\u65b0\u6587\u4ef6\uff0c\u7136\u540e\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`<\/p>\n

LOCAL_PATH := $(call my-dir)<\/p>\n

include $(CLEAR_VARS)<\/p>\n

\n

<\/figure>\n<\/p>\n

LOCAL_MODULE := myapp<\/p>\n

LOCAL_SRC_FILES := myapp.c<\/p>\n

include $(BUILD_SHAR\u5b89\u5353app\u5f00\u53d1\u5de5\u5177<\/a>ED_LIBRARY)<\/p>\n

“`<\/p>\n

5. \u4f9d\u7136\u5728`jni`\u6587\u4ef6\u5939\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a`myapp.c`\u7684\u65b0\u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n

“`<\/p>\n

#include <\/p>\n

#include <\/p>\n

JNIEXPORT jstring JNICALL<\/p>\n

Java_com_example_androidmyapp_MainActivity_stringFromJNI(JNIEnv *env, jobject obj) {<\/p>\n

return (*env)->NewStringUTF(env, “Hello from C!”);<\/p>\n

}<\/p>\n

“`<\/p>\n

\u8fd9\u4e2a\u7b80\u5355\u7684C\u4ee3\u7801\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a`Java_com_example_android_myapp_MainActivity_stringFromJNI`\u7684\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u6761\u5b57\u7b26\u4e32\uff1a\u201cHello from C!\u201d\u3002<\/p>\n

### \u5728Java\u4ee3\u7801\u4e2d\u8c03\u7528C\u4ee3\u7801<\/p>\n

1. \u5728\u60a8\u7684\u9879\u76ee\u4e2d\u627e\u5230MainActivity.java\u6587\u4ef6\u3002<\/p>\n

2. \u5728MainActivity\u7c7b\u7684\u58f0\u660e\u90e8\u5206\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u4ee5\u58f0\u660e`stringFromJNI`\u65b9\u6cd5\uff1a<\/p>\n

“`<\/p>\n

public native String stringFromJNI();<\/p>\n

“`<\/p>\n

3. \u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u6dfb\u52a0\u4ee5\u4e0b\u9759\u6001\u4ee3\u7801\u5757\u4ee5\u52a0\u8f7d\u751f\u6210\u7684\u539f\u751f\u5e93\uff1a<\/p>\n

“`<\/p>\n

static {<\/p>\n

System.loadLibrary(“myapp”);<\/p>\n

}<\/p>\n

“`<\/p>\n

4. \u63a5\u4e0b\u6765\uff0c\u5728`onCreate()`\u65b9\u6cd5\u4e2d\u8c03\u7528`stringFromJNI()`\u65b9\u6cd5\u5e76\u5c06\u7ed3\u679c\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff1a<\/p>\n

“`<\/p>\n

@Override<\/p>\n

protected void onCreate(Bundle savedInstanceState) {<\/p>\n

super.onCreate(savedInstanceState);<\/p>\n

setContentView(R.layout.activity_main);<\/p>\n

TextView tv = (TextView) findViewById(R.id.sample_text);<\/p>\n

tv.setText(stringFromJNI());<\/p>\n

}<\/p>\n

“`<\/p>\n

### \u6784\u5efa\u548c\u8fd0\u884c\u9879\u76ee<\/p>\n

\u73b0\u5728\uff0c\u4e00\u5207\u51c6\u5907\u5c31\u7eea\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528Android Studio\u7684\u8fd0\u884c\u6309\u94ae\u6784\u5efa\u548c\u8fd0\u884c\u9879\u76ee\u3002\u8fd0\u884c\u60a8\u7684\u9879\u76ee\u540e\uff0c\u60a8\u4f1a\u770b\u5230\u5e94\u7528\u7a0b\u5e8f\u663e\u793a\u201cHello from C!\u201d\uff0c\u8868\u660e\u6211\u4eec\u6210\u529f\u5730\u5c06C\u8bed\u8a00\u4ee3\u7801\u5f15\u5165Android\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

\u8fd9\u5c31\u662f\u4f7f\u7528C\u8bed\u8a00\u5f00\u53d1\u5b89\u5353App\u7684\u57fa\u7840\u6559\u7a0b\u3002\u5f53\u7136\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6269\u5c55\u539f\u751f\u4ee3\u7801\u4ee5\u5305\u542b\u66f4\u9ad8\u7ea7\u7684\u529f\u80fd\u3002\u4f46\u8bf7\u6ce8\u610f\uff0c\u4f7f\u7528C\u8bed\u8a00\u5f00\u53d1Android\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u5e26\u6765\u66f4\u9ad8\u7684\u590d\u6742\u6027\u548c\u7ef4\u62a4\u96be\u5ea6\uff0c\u56e0\u6b64\u5728\u5927\u591a\u6570\u573a\u666f\u4e0b\uff0c\u8fd8\u662f\u5efa\u8bae\u4f7f\u7528Java\u6216Kotlin\u8fdb\u884c\u5f00\u53d1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u8bed\u8a00\u5f00\u53d1\u5b89\u5353APP\u662f\u5b8c\u5168\u53ef\u80fd\u7684\uff0c\u867d\u7136\u8fd9\u5e76\u4e0d\u662fAndroid\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u4e2d\u7684\u4e3b\u6d41\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4e3b\u6d41\u7684Android\u5f00\u53d1\u8bed\u8a00\u4e3aJava\u548cKotlin\u3002\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u4e86\u89e3\u5982\u4f55\u4f7f\u7528C\u8bed\u8a00\u548cAndroid <\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[81,12256,12255,84,322],"class_list":{"0":"post-6668","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-zuoapp","7":"tag-81","8":"tag-app","10":"tag-84","11":"tag-322"},"_links":{"self":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/6668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/comments?post=6668"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/6668\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/media?parent=6668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/categories?post=6668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/tags?post=6668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}