{"id":6672,"date":"2023-08-17T11:07:27","date_gmt":"2023-08-17T03:07:27","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=6672"},"modified":"2023-08-17T11:07:27","modified_gmt":"2023-08-17T03:07:27","slug":"c%e8%af%ad%e8%a8%80%e5%8f%af%e4%bb%a5%e5%bc%80%e5%8f%91%e5%ae%89%e5%8d%93app","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/6672\/","title":{"rendered":"c\u8bed\u8a00\u53ef\u4ee5\u5f00\u53d1\u5b89\u5353app"},"content":{"rendered":"<p>\u5f53\u7136\u53ef\u4ee5\uff01\u5c3d\u7ba1C\u8bed\u8a00\u5e76\u4e0d\u662f\u7528\u4e8e\u5f00\u53d1Android\u5e94\u7528\u7a0b\u5e8f\u7684\u9996\u9009\u8bed\u8a00\uff08\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4eba\u4eec\u66f4\u613f\u610f\u9009\u62e9Java\u3001Kotlin\u3001\u4ee5\u53caFlutter\uff09\uff0c\u4f46C\u8bed\u8a00\u786e\u5b9e\u53ef\u4ee5\u7528\u4e8e\u5f00\u53d1\u5b89\u5353\u5e94\u7528\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u4f7f\u7528C\u8bed\u8a00\u8fdb\u884cAndroid\u5e94\u7528\u7a0b\u5e8f\u5f00\u53d1\u7684\u539f\u7406\u548c\u8be6\u7ec6\u6027\u4ecb\u7ecd\u3002<\/p>\n<p>\u539f\u7406\uff1a<\/p>\n<p>Android 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Studio\u4e2d\u914d\u7f6eNDK\u7684\u8def\u5f84\u3002<\/p>\n<p>2. \u521b\u5efaAndroid\u5e94\u7528\u9879\u76ee<\/p>\n<p>\u5728Android Studio\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Android\u5e94\u7528\u7a0b\u5e8f\u9879\u76ee\uff0c\u9009\u62e9Empty Activity\u3002\u7136\u540e\u9075\u5faa\u5411\u5bfc\u5b8c\u6210\u9879\u76ee\u7684\u521b\u5efa\u3002<\/p>\n<p>3. \u6dfb\u52a0\u4e00\u4e2aC\/C++\u6e90\u6587\u4ef6\u5939<\/p>\n<p>\u5728\u9879\u76ee\u7684app\/src\/main\u6587\u4ef6\u5939\u4e0b\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acpp\u7684\u65b0\u6587\u4ef6\u5939\uff0c\u5e76\u5728\u5176\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3anative-lib.c\u7684C\u6e90\u6587\u4ef6\u3002\u5728\u8be5\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5c06\u7f16\u5199C\u8bed\u8a00\u7684\u5b9e\u73b0\u4ee3\u7801\u3002<\/p>\n<p>4. \u7f16\u5199JNI\u65b9\u6cd5<\/p>\n<p>\u5728native-lib.c\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u5c06\u5b9a\u4e49\u4e0eJava\u4ee3\u7801\u4ea4\u4e92\u7684JNI\u65b9\u6cd5\u3002\u9996\u5148\u5305\u542bJNI\u5934\u6587\u4ef6\u548c\u5176\u4ed6\u76f8\u5173\u5934\u6587\u4ef6\uff1a<\/p>\n<p>&#8220;`c<\/p>\n<p>#include <\/p>\n<p><p>#include <\/p>\n<p><p>&#8220;`<\/p>\n<p>\u63a5\u7740\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a`getStringFromNative`\u7684\u51fd\u6570\uff1a<\/p>\n<p>&#8220;`c<\/p>\n<p>JNIEXPORT jstring JNICALL<\/p>\n<p>Java_com_example_myapp_MainActivity_getStringFromNative(JNIEnv *env, jobject thiz) {<\/p>\n<p>    char temp[] = &#8220;Hello from C!&#8221;;<\/p>\n<p>    return (*env)-&gt;NewStringUTF(env, temp);<\/p>\n<p>}<\/p>\n<p>&#8220;`<\/p>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u57fa\u672c\u7684C\u51fd\u6570\uff0c\u5b83\u8fd4\u56de\u4e00\u4e2a&#8221;Hello from C!&#8221;\u5b57\u7b26\u4e32\uff0c\u5e76\u901a\u8fc7JNI\u4e0eJava\u4ee3\u7801\u5b9e\u73b0\u4e92\u901a\u3002<\/p>\n<p>5. \u5728Java\u5c42\u4e2d\u58f0\u660enative\u65b9\u6cd5<\/p>\n<p>\u5728MainActivity.java\uff08\u4f4d\u4e8eapp\u6a21\u5757\u7684src\/main\/java\u76ee\u5f55\u4e0b\u7684\u76f8\u5e94\u5305\uff09\u6587\u4ef6\u4e2d\uff0c\u58f0\u660e\u4e00\u4e2a\u672c\u5730\u65b9\u6cd5\uff0c\u5e76\u5728onCreate\u65b9\u6cd5\u4e2d\u8c03\u7528\u5b83\u3002\u4f8b\u5982\uff1a<\/p>\n<p>&#8220;`java<\/p>\n<p>public class MainActivity extends AppCompatActivity {<\/p>\n<p>    static {<\/p>\n<p>        S<a href=\"https:\/\/www.anzhuoe.com\/\">\u5b89\u5353app\u5f00\u53d1\u5de5\u5177<\/a>ystem.loadLibrary(&#8220;native-lib&#8221;);<\/p>\n<p>    }<\/p>\n<p>    @Override<\/p>\n<p>    protected void onCreate(Bundle savedInstanceState) {<\/p>\n<p>        super.onCreate(savedInstanceState);<\/p>\n<p>        setContentView(R.layout.activity_main);<\/p>\n<p>        \/\/ 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href=\"https:\/\/www.anzhuoe.com\/\">\u5b89\u5353app\u5236\u4f5c<\/a>id NDK\u7684\u5e93<\/p>\n<p>find_library(log-lib log)<\/p>\n<p>target_link_libraries(native-lib ${log-lib})<\/p>\n<p>&#8220;`<\/p>\n<p>7. \u5728build.gradle\u6587\u4ef6\u4e2d\u914d\u7f6eCMake<\/p>\n<p>\u5fc5\u987b\u5728app\u4e0b\u7684build.gradle\u6587\u4ef6\u4e2d\u914d\u7f6eCMake\u6784\u5efa\u811a\u672c\u4ee5\u7f16\u8bd1C\u4ee3\u7801\u3002<\/p>\n<p>&#8220;`groovy<\/p>\n<p>\/\/ &#8230;<\/p>\n<p>android {<\/p>\n<p>    \/\/ &#8230;<\/p>\n<p>    defaultConfig {<\/p>\n<p>        \/\/ &#8230;<\/p>\n<p>        externalNativeBuild {<\/p>\n<p>            cmake {<\/p>\n<p>                cppFlags &#8220;&#8221;<\/p>\n<p>            }<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>    buildTypes {<\/p>\n<p>        \/\/ &#8230;<\/p>\n<p>    }<\/p>\n<p>    externalNativeBuild {<\/p>\n<p>        cmake {<\/p>\n<p>            path &#8220;CMakeLists.txt&#8221;<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>\/\/ &#8230;<\/p>\n<p>&#8220;`<\/p>\n<p>8. \u6784\u5efa\u548c\u8fd0\u884c\u5e94\u7528<\/p>\n<p>\u73b0\u5728\u4e00\u5207\u90fd\u5df2\u51c6\u5907\u597d\u3002\u70b9\u51fbAndroid Studio\u4e2d\u7684\u7eff\u8272\u8fd0\u884c\u6309\u94ae\uff0c\u7f16\u8bd1\u5e76\u8fd0\u884c\u6b64\u5e94\u7528\u3002\u5728\u8fd0\u884c\u7684\u8bbe\u5907\u6216\u6a21\u62df\u5668\u4e0a\uff0c\u6211\u4eec\u5c06\u770b\u5230\u4e00\u4e2a\u663e\u793a&#8221;Hello from C!&#8221;\u5b57\u7b26\u4e32\u7684TextView\u7ec4\u4ef6\u3002<\/p>\n<p>\u603b\u7ed3\uff1a\u867d\u7136C\u8bed\u8a00\u5e76\u4e0d\u662f\u5f00\u53d1Android\u5e94\u7528\u7684\u9996\u9009\u65b9\u5f0f\uff0c\u4f46\u901a\u8fc7\u4f7f\u7528NDK\u548cJNI\uff0c\u5b83\u53ef\u4ee5\u63d0\u4f9b\u6027\u80fd\u4f18\u52bf\uff0c\u5e76\u6267\u884c\u4e0eJava\u4ee3\u7801\u4ea4\u4e92\u7684\u539f\u751f\u65b9\u6cd5\u3002\u672c\u6587\u7684\u6559\u7a0b\u4ec5\u4ec5\u662f\u4e00\u4e2a\u5165\u95e8\u793a\u4f8b\uff0c\u5b9e\u9645\u4e0aC\u8bed\u8a00\u5728Android\u5f00\u53d1\u4e2d\u5e38\u5e38\u7528\u4e8e\u7cfb\u7edf\u5e95\u5c42\u3001<\/p>\n<p><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i.cdn.yimenapp.com\/2023-04\/06\/12\/15000895281.jpg\" 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