文档模板：v0.4.2

react-native-restart

本项目基于 react-native-restart 开发。

该第三方库的仓库已迁移至 Gitcode，且支持直接从 npm 下载，新的包名为：@react-native-ohos/react-native-restart 版本所属关系如下：

简介

react-native-restart 是 React Native 生态中一个轻量且关键的原生模块（Native Module）。它的核心功能是在应用运行时，强制重启整个 React Native 应用进程，从而实现类似“热重启”（Hot Restart）的效果。

下载安装

进入到工程目录并输入以下命令：

npm

npm install @react-native-ohos/react-native-restart

yarn

yarn add @react-native-ohos/react-native-restart

Link

使用AutoLink的工程需要根据该文档配置，Autolink框架指导文档：https://gitcode.com/CPF-RN/ohos_react_native/blob/master/docs/zh-cn/Autolinking.md

如您使用的版本支持 Autolink，并且工程已接入 Autolink，可跳过ManualLink配置。

{
  ...
  "overrides": {
    "@rnoh/react-native-openharmony" : "./react_native_openharmony"
  }
}

"dependencies": {
    "@rnoh/react-native-openharmony": "file:../react_native_openharmony",
   	"@react-native-ohos/react-native-restart": "file:../../node_modules/@react-native-ohos/react-native-restart/harmony/rn_restart.har",
  }

cd entry
ohpm install

project(rnapp)
cmake_minimum_required(VERSION 3.4.1)
set(CMAKE_SKIP_BUILD_RPATH TRUE)
set(RNOH_APP_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
set(NODE_MODULES "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../node_modules")
+ set(OH_MODULES "${CMAKE_CURRENT_SOURCE_DIR}/../../../oh_modules")
set(RNOH_CPP_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../react-native-harmony/harmony/cpp")
set(LOG_VERBOSITY_LEVEL 1)
set(CMAKE_ASM_FLAGS "-Wno-error=unused-command-line-argument -Qunused-arguments")
set(CMAKE_CXX_FLAGS "-fstack-protector-strong -Wl,-z,relro,-z,now,-z,noexecstack -s -fPIE -pie")
set(WITH_HITRACE_SYSTRACE 1) # for other CMakeLists.txt files to use
add_compile_definitions(WITH_HITRACE_SYSTRACE)

add_subdirectory("${RNOH_CPP_DIR}" ./rn)

# RNOH_BEGIN: manual_package_linking_1
add_subdirectory("../../../../sample_package/src/main/cpp" ./sample-package)
+ add_subdirectory("${OH_MODULES}/@react-native-ohos/react-native-restart/src/main/cpp" ./restart)
# RNOH_END: manual_package_linking_1

file(GLOB GENERATED_CPP_FILES "./generated/*.cpp")

add_library(rnoh_app SHARED
    ${GENERATED_CPP_FILES}
    "./PackageProvider.cpp"
    "${RNOH_CPP_DIR}/RNOHAppNapiBridge.cpp"
)
target_link_libraries(rnoh_app PUBLIC rnoh)

# RNOH_BEGIN: manual_package_linking_2
target_link_libraries(rnoh_app PUBLIC rnoh_sample_package)
+ target_link_libraries(rnoh_app PUBLIC rnoh_restart)
# RNOH_END: manual_package_linking_2

#include "RNOH/PackageProvider.h"
#include "generated/RNOHGeneratedPackage.h"
#include "SamplePackage.h"
+ #include "RestartPackage.h"

using namespace rnoh;

std::vector<std::shared_ptr<Package>> PackageProvider::getPackages(Package::Context ctx) {
    return {
        std::make_shared<RNOHGeneratedPackage>(ctx),
        std::make_shared<SamplePackage>(ctx),
+       std::make_shared<RestartPackage>(ctx)
    };
}

import type { RNPackageContext, RNPackage } from "rnoh/ts";
import { SamplePackage } from "rnoh-sample-package/ts";
+ import { RNRestartPackage } from '@react-native-ohos/react-native-restart/ts';

export function createRNPackages(ctx: RNPackageContext): RNPackage[] {
  return [
      new SamplePackage(ctx), 
+     new RNRestartPackage(ctx)
  ];
}

运行

点击右上角的 sync 按钮

或者在终端执行：

cd entry
ohpm install

然后编译、运行即可。

约束与限制

兼容性

本文档内容基于以下环境验证通过：

1. RNOH: 0.72.96; SDK: HarmonyOS 6.0.0 Release SDK; IDE: DevEco Studio 6.0.0.858; ROM: 6.0.0.112;
2. RNOH: 0.72.33; SDK: HarmonyOS NEXT B1; IDE: DevEco Studio 5.0.3.900; ROM: Next.0.0.71;

使用示例

下面的代码展示了这个库的基本使用场景：

import { useState } from "react";
import { StyleSheet, Text } from "react-native";
import RNRestart from "react-native-restart";
import { Tester, TestSuite, TestCase } from "@rnoh/testerino";

export default function RestartDemo() {
  const [restartReason, setRestartReason] = useState("");

  return (
    <Tester>
      <TestSuite name="restart">
        <TestCase tags={["C_API"]} itShould="restart">
          <Text
            style={styles.button}
            onPress={() => RNRestart.restart("restart_a")}
          >
            restart
          </Text>
        </TestCase>
        <TestCase tags={["C_API"]} itShould="Restart">
          <Text
            style={styles.button}
            onPress={() => RNRestart.Restart("restart_b")}
          >
            Restart
          </Text>
        </TestCase>
        <TestCase
          tags={["C_API"]}
          itShould="getReason"
          initialState={"reason"}
          arrange={({ setState }) => {
            return (
              <Text
                style={styles.button}
                onPress={async () => {
                  try {
                    const reason = await RNRestart.getReason();
                    setRestartReason(reason);
                    setState(reason);
                  } catch (e) {
                    setRestartReason("");
                    setState("");
                  }
                }}
              >
                getReason{restartReason ? `（原因：${restartReason}）` : ""}
              </Text>
            );
          }}
          assert={async ({ expect, state }) => {
            expect(state).include("restart_");
          }}
        />
      </TestSuite>
    </Tester>
  );
}

const styles = StyleSheet.create({
  button: {
    paddingVertical: 6,
    paddingHorizontal: 12,
    backgroundColor: "hsl(193, 95%, 68%)",
    borderWidth: 2,
    borderColor: "hsl(193, 95%, 30%)",
  },
});

接口说明

API

遗留问题

其他

无

目录结构

/rntpc_react-native-restart  # 项目根目录
├── harmony              # 鸿蒙适配代码
│    └─ rn_restart.har          # har包
│    └─ restart                  # 鸿蒙适配核心代码
│          └─ Index.ets    # 鸿蒙适配代码入口    
│          └─ src/main/ets  
│              └─ RNRestartTurboModule.ts  # Restart核心实现   
├── src                  # RN代码
│    └─ index.tsx  # 入口文件 
│    └─ NativeRestart.ts 类型文件          
├── README_en.md           # 英文安装使用方法    
├── README.md   # 中文安装使用方法                    

贡献代码

使用过程中发现任何问题都可以提交 Issue，当然，也非常欢迎提交 PR 。

开源协议

本项目基于 The MIT License (MIT) ，请自由地享受和参与开源。