{"id":6671,"date":"2023-08-17T11:07:27","date_gmt":"2023-08-17T03:07:27","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=6671"},"modified":"2023-08-17T11:07:27","modified_gmt":"2023-08-17T03:07:27","slug":"c%e8%af%ad%e8%a8%80%e5%ae%89%e5%8d%93app%e5%bc%80%e5%8f%91%e6%9c%89%e4%bc%98%e5%8a%bf%e5%98%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/6671\/","title":{"rendered":"c\u8bed\u8a00\u5b89\u5353app\u5f00\u53d1\u6709\u4f18\u52bf\u561b\uff1f"},"content":{"rendered":"

C\u8bed\u8a00\u5728Android\u5f00\u53d1\u4e2d\u7684\u5e94\u7528\uff08\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecd\uff09<\/p>\n

C\u8bed\u8a00\u5728Android\u5f00\u53d1\u4e2d\u53ef\u901a\u8fc7Native Development Kit\uff08NDK\uff09\u5de5\u5177\u4e3a\u5176\u63d0\u4f9b\u539f\u751f\u5f00\u53d1\u80fd\u529b\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528C\u8bed\u8a00\u8fdb\u884c\u539f\u751f\u5f00\u53d1\u53ef\u4ee5\u63d0\u9ad8\u5e94\u7528\u6027\u80fd\uff0c\u7279\u522b\u662f\u5728\u6d89\u53ca\u5230\u5e95\u5c42\u64cd\u4f5c\uff0c\u5982\u56fe\u50cf\u5904\u7406\u548c\u6e38\u620f\u5f15\u64ce\u65f6\u3002\u867d\u7136Java\uff08Android\u7684\u6807\u51c6\u5f00\u53d1\u8bed\u8a00\uff09\u5728\u5f88\u591a\u65b9\u9762\u90fd\u5f88\u6709\u7528\uff0c\u4f46C\u8bed\u8a00\u5728\u5904\u7406CPU\u5bc6\u96c6\u578b\u4efb\u52a1\u65f6\u53ef\u80fd\u4f1a\u66f4\u6709\u6548\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5728Android App\u5f00\u53d1\u4e2d\u4f7f\u7528C\u8bed\u8a00\u7684\u539f\u7406\u548c\u4e00\u4e9b\u57fa\u672c\u6982\u5ff5\u3002<\/p>\n

1. \u539f\u7406<\/p>\n

Android\u5e94\u7528\u5f00\u53d1\u4e3b\u8981\u91c7\u7528Java\u548cKotlin\uff0c\u4f46\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u5982\u6027\u80fd\u4f18\u5316\u3001\u5e95\u5c42\u64cd\u4f5c\u7b49\uff0cC\u6216C++\u7684\u4f7f\u7528\u66f4\u4e3a\u5408\u9002\u3002\u8fd9\u5c31\u6d89\u53ca\u5230Android NDK\uff08Native Development Kit\uff09\u7684\u4f7f\u7528\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u4f7f\u7528C\/C++\u4ee3\u7801\u5e76\u901a\u8fc7JNI\uff08Java Native Interface\uff09\u4e0eJava\u4ee3\u7801\u8fdb\u884c\u4e92\u76f8\u8c03\u7528\u3002<\/p>\n

2. Android NDK\u7b80\u4ecb<\/p>\n

Android NDK\u662f\u4e00\u5957\u7528\u4e8e\u5b9e\u73b0\u90e8\u5206\u6216\u5168\u90e8\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u4f7f\u7528C\/C++\u7684\u5de5\u5177\u96c6\u3002\u5176\u4e3b\u8981\u5e94\u7528\u573a\u666f\u5305\u62ec\u91cd\u5ea6\u4f9d\u8d56\u5e95\u5c42\u64cd\u4f5c\u6216\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u5e94\u7528\uff0c\u5982\u6e38\u620f\u5f00\u53d1\u3002\u4f7f\u7528\u8be5\u5de5\u5177\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c06C\u4ee3\u7801\u5d4c\u5165\u5230Android\u5e94\u7528\u4e2d\uff0c\u5b9e\u73b0\u4e0eJava\u4ee3\u7801\u7684\u4e92\u64cd\u4f5c\u6027\u3002<\/p>\n

3. JNI\uff08Java Native Interface\uff09\u7b80\u4ecb<\/p>\n

JNI\u662fJava\u865a\u62df\u673a\u63d0\u4f9b\u7684\u7f16\u7a0b\u6846\u67b6\uff0c\u5141\u8bb8Java\u4ee3\u7801\u4e0e\u5176\u4ed6\u8bed\u8a00\u5982C\/C++\u7f16\u5199\u7684\u4ee3\u7801\u4e92\u64cd\u4f5c\u3002\u901a\u8fc7JNI\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u539f\u751f\uff08native\uff09\u51fd\u6570\u548cJava\u4ee3\u7801\u8fdb\u884c\u7ed1\u5b9a\uff0c\u4f7fJava\u7a0b\u5e8f\u80fd\u591f\u8c03\u7528\u8fd9\u4e9b\u539f\u751f\u51fd\u6570\u3002<\/p>\n

4. \u5982\u4f55\u4f7f\u7528C\u8bed\u8a00\u5f00\u53d1Android App<\/p>\n

\u4ee5\u4e0b\u4e3a\u7b80\u8981\u6b65\u9aa4\uff0c\u8be6\u7ec6\u5b9e\u73b0\u8bf7\u53c2\u9605Android\u5b98\u65b9\u6587\u6863\u63d0\u4f9b\u7684\u76f8\u5173\u6559\u7a0b\u3002<\/p>\n

a) \u4e0b\u8f7d\u5e76\u5b89\u88c5Android NDK<\/p>\n

\u9700\u5728Android Studio\uff08\u5b98\u65b9\u63a8\u8350\u7684\u5f00\u53d1\u73af\u5883\uff09\u4e2d\u5b89\u88c5Android NDK\u3002\u8fdb\u5165”Tools > SDK Manager > SDK Tools”\uff0c\u52fe\u9009”NDK”\u548c”CMake”\uff0c\u70b9\u51fb”Apply”\u8fdb\u884c\u5b89\u88c5\u3002<\/p>\n

b) \u521b\u5efaJNI\u63a5\u53e3<\/p>\n

\u5728\u5e94\u7528\u4ee3\u7801\u7684\u76f8\u5e94\u4f4d\u7f6e\u521b\u5efa\u4e00\u4e2aJava\u7c7b\uff0c\u5b9a\u4e49\u539f\u751f\u65b9\u6cd5\u5e76\u52a0\u8f7d\u672c\u5730\u5e93\u3002\u4f8b\u5982\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a”NativeHelper”\u7684\u7c7b\uff0c<\/p>\n

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

\u7f16\u5199\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n

“`java<\/p>\n

public class NativeHelper {<\/p>\n

static {<\/p>\n

S\u5b89\u5353app\u5f00\u53d1\u5de5\u5177<\/a>ystem.loadLibrary(“native-lib”);<\/p>\n

}<\/p>\n

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

}<\/p>\n

“`<\/p>\n

\u5176\u4e2d\uff0c”native-lib”\u6307\u5b9a\u52a0\u8f7d\u7684\u672c\u5730\u5e93\u540d\u3002<\/p>\n

c) \u7f16\u5199C\u8bed\u8a00\u5b9e\u73b0<\/p>\n

\u63a5\u4e0b\u6765\u9700\u4e3aJNI\u65b9\u6cd5\u63d0\u4f9bC\u8bed\u8a00\u5b9e\u73b0\u3002\u5728Android Studio\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a”native-lib.c”\u7684\u6587\u4ef6\uff0c\u5176\u4e2d\u5b9e\u73b0\u4e0a\u8ff0native\u65b9\u6cd5\uff1a<\/p>\n

“`c<\/p>\n

#incl\u5b89\u5353APP\u5f00\u53d1<\/a>ude <\/p>\n

#include <\/p>\n

jstring Java_com_example_myapp_NativeHelper_getStringFromNative(JNIEnv* env, jobject thiz) {<\/p>\n

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

}<\/p>\n

“`<\/p>\n

d) \u7f16\u8bd1\u5e76\u94fe\u63a5C\u4ee3\u7801<\/p>\n

\u4f7f\u7528Android NDK\u5de5\u5177\uff0c\u7f16\u8bd1\u521a\u521a\u521b\u5efa\u7684C\u6587\u4ef6\u5e76\u5c06\u5176\u94fe\u63a5\u5230\u5e94\u7528\u3002\u9996\u5148\uff0c\u5728”build.gradle”\u4e2d\u6dfb\u52a0NDK\u63d2\u4ef6\u652f\u6301\u7684\u4ee3\u7801\u3002\u7136\u540e\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a”CMakeLists.txt”\u7684\u6587\u4ef6\uff0c\u7528\u4e8e\u914d\u7f6eCMake\u65f6\u7684\u4e00\u4e9b\u53c2\u6570\u5982\u5e93\u540d\u3001\u5934\u6587\u4ef6\u3001\u6e90\u6587\u4ef6\u7b49\u3002<\/p>\n

e) \u8c03\u7528C\u8bed\u8a00\u65b9\u6cd5<\/p>\n

\u73b0\u5728\uff0c\u5373\u53ef\u5728\u5e94\u7528\u7684Java\u4ee3\u7801\u4e2d\u8c03\u7528\u539f\u751f\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5728\u4e3bActivity\u4e2d\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u83b7\u53d6C\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n

“`java<\/p>\n

public void showNativeString() {<\/p>\n

NativeHelper nativeHelper = new NativeHelper();<\/p>\n

String nativeString = nativeHelper.getStringFromNative();<\/p>\n

Log.d(“MainActivity”, “Received string: ” + nativeString);<\/p>\n

}<\/p>\n

“`<\/p>\n

\u7f16\u5199C\u8bed\u8a00\u4ee3\u7801\u548c\u4f7f\u7528NDK\u5f00\u53d1Android App\u9700\u8981\u638c\u63e1\u4e00\u4e9b\u4e13\u95e8\u77e5\u8bc6\uff0c\u4f46\u8fd9\u786e\u5b9e\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u6781\u5927\u5730\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u3002\u5bf9\u4e8e\u5bf9\u6027\u80fd\u6709\u4e25\u683c\u8981\u6c42\u7684\u5e94\u7528\uff0c\u5982\u6e38\u620f\u6216\u56fe\u50cf\u5904\u7406\u529f\u80fd\uff0cC\u8bed\u8a00\u7684\u539f\u751f\u5f00\u53d1\u65b9\u6cd5\u53ef\u4ee5\u5e26\u6765\u663e\u8457\u63d0\u5347\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u8bed\u8a00\u5728Android\u5f00\u53d1\u4e2d\u7684\u5e94\u7528\uff08\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecd\uff09C\u8bed\u8a00\u5728Android\u5f00\u53d1\u4e2d\u53ef\u901a\u8fc7Native Development Kit\uff08NDK\uff09\u5de5\u5177\u4e3a\u5176\u63d0\u4f9b\u539f\u751f\u5f00\u53d1\u80fd\u529b\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528C\u8bed\u8a00\u8fdb\u884c\u539f\u751f<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[81,12262,12263,593,84],"class_list":["post-6671","post","type-post","status-publish","format-standard","hentry","category-zuoapp","tag-81","tag-appidea","tag-app","tag-593","tag-84"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/6671","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/comments?post=6671"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/posts\/6671\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/media?parent=6671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/categories?post=6671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.com\/zhidian\/wp-json\/wp\/v2\/tags?post=6671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}