Android原生项目转RN项目步骤

思路：官文是采用在项目基础上生成React结构，但问题颇多并不靠谱。生成React-Native项目然后替换android包更方便快捷。当前转换基于0.48版本。

替换项目

删除RN项目下android文件夹，将原生项目复制到RN项目路径下，并改名为android

配置settings.gradle

在最上方添加

rootProject.name = '项目名'

项目build.gradle中添加maven依赖

allprojects {    repositories {        jcenter()        mavenLocal()        maven {            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm            url "$rootDir/../node_modules/react-native/android"        }    }}

模块中gradle设置

将所有模块gradle中的version都统一为23

compileSdkVersion 23buildToolsVersion "23.0.1"

app.gradle增加ndk限制

defaultConfig {    ...    ndk {    abiFilters "armeabi-v7a", "x86"    }}

app.gradle增加依赖

dependencies {    ...    compile "com.facebook.react:react-native:+"  // From node_modules    ...}

Application配置

需要注意的是0.48正式版新增了一个getJSMainModuleName方法来定位主模块入口

public class App extends Application implements ReactApplication{    private static App mApp;    public static App getInstance() {        return mApp;    }    @Override    public void onCreate() {        super.onCreate();        mApp = this;        //react-native        SoLoader.init(this, /* native exopackage */ false);    }    //初始化react-native    private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {        @Override        public boolean getUseDeveloperSupport() {            return BuildConfig.DEBUG;        }        @Override        protected List<ReactPackage> getPackages() {            return Arrays.<ReactPackage>asList(                    new MainReactPackage(),            );        }        @Override        protected String getJSMainModuleName() {            return "index";        }    };    @Override    public ReactNativeHost getReactNativeHost() {        return mReactNativeHost;    }}

测试Activity设置

注意，一定要在根目录进行

public class MainActivity extends ReactActivity {    @Override    protected String getMainComponentName() {        return "Yuwen";    }}

Manifest.xml配置

<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.tfedu.yuwen">    <!--必要权限-->    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.WRITE_SETTINGS" />    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />    <!--不要忘记设置name-->    <application        android:name=".App"        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <!-- React测试页面 -->        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <!-- React设置页面 -->        <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />    </application></manifest>

运行

所有设置配置好后在根目录下执行指令react-native run-android就能运行了~