模板版本：v0.4.0

react-native-theme-control

本项目基于 react-native-theme-control 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-theme-control 版本所属关系如下：

1. 安装与使用

进入到工程目录并输入以下命令：

npm

npm install @react-native-ohos/react-native-theme-control

yarn

yarn add @react-native-ohos/react-native-theme-control

下面的代码展示了这个库的基本使用场景：

import * as React from 'react';
import { Text, useColorScheme, View } from 'react-native';
import {
    setThemePreference,
    SystemBars,
    ThemePreference,
    useThemePreference,
} from '@vonovak/react-native-theme-control';
// @ts-ignore
import SegmentedControl from '@react-native-segmented-control/segmented-control/js/SegmentedControl.js';

export function SimpleScreen() {
    const colorScheme = useColorScheme();
    const isDarkMode = colorScheme === 'dark';
    const themePreference = useThemePreference();
    const bgColor = isDarkMode ? '#2A2550' : '#FFF6EA';
    const textColor = isDarkMode ? 'white' : 'black';
    const barsBackground = isDarkMode ? '#9900F0' : '#A0BCC2';
    const dividerColor = textColor;
    const textColorStyle = { color: textColor };
    const values: Array<ThemePreference> = ['light', 'dark', 'system'];
    return (
        <View
            style={{
                backgroundColor: bgColor,
                flexGrow: 1,
                flexShrink: 1,
                alignItems: 'center',
                justifyContent: 'space-evenly',
            }}
        >
            <SystemBars
                backgroundColor={barsBackground}
                dividerColor={dividerColor}
            />
            <SegmentedControl
                style={{ width: '100%' }}
                values={values}
                selectedIndex={values.indexOf(themePreference)}
                onChange={({ nativeEvent }: { nativeEvent: any }) => {
                    setThemePreference(nativeEvent.value as ThemePreference);
                }}
            />
            <Text style={textColorStyle}>useColorScheme(): {colorScheme}</Text>
            <Text style={textColorStyle}>
                useThemePreference(): {themePreference}
            </Text>
        </View>
    );
}

2. 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/openharmony-sig/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-theme-control": "file:../../node_modules/@react-native-ohos/react-native-theme-control/harmony/themecontrol.har"
  }

cd entry
ohpm install

project(rnapp)
cmake_minimum_required(VERSION 3.4.1)
set(RNOH_APP_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+ set(NODE_MODULES "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../node_modules")
+ set(OH_MODULE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../../oh_modules")
set(RNOH_CPP_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../react-native-harmony/harmony/cpp")

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

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


add_library(rnoh_app SHARED
    "./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_theme_control)
# RNOH_END: manual_package_linking_2

#include "RNOH/PackageProvider.h"
#include "SamplePackage.h"
+ #include "RNThemeControlPackage.h"

using namespace rnoh;

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

  ...
+ import { RNThemeControlPackage } from '@react-native-ohos/react-native-theme-control/ts'

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

2.5. 必要的手动配置项

在 entry/src/main/ets/abilityStage 新建 MyAbilityStage.ets

打开 entry/src/main/ets/abilityStage/MyAbilityStage.ets，添加：

import appRecovery from '@ohos.app.ability.appRecovery';
import AbilityStage from '@ohos.app.ability.AbilityStage';
import { Want } from '@kit.AbilityKit';

export default class MyAbilityStage extends AbilityStage {
  onCreate() {
      appRecovery.enableAppRecovery(
      appRecovery.RestartFlag.ALWAYS_RESTART,
      appRecovery.SaveOccasionFlag.SAVE_WHEN_ERROR,
      appRecovery.SaveModeFlag.SAVE_WITH_FILE
    );

    let wantObj: Want = {
      bundleName: 'com.rnoh.tester',
      abilityName: 'EntryAbility'
    };

    appRecovery.setRestartWant(wantObj)
  }
}

在 EntryAbility.ets 配置生命周期调用

打开 entry/src/main/ets/entryability/EntryAbility.ets，添加：

+ import {RNAbility} from '@rnoh/react-native-openharmony';
+ import Want from '@ohos.app.ability.Want';
+ import { RNThemeControlModule } from '@react-native-ohos/react-native-theme-control';
    .....
+  export default class EntryAbility extends RNAbility {
+    onCreate(want: Want): void {
+    super.onCreate(want);
+    RNThemeControlModule.recoverApplicationTheme(this.context);
+   }
  getPagePath() {
    return 'pages/Index';
  }
}

打开 entry/src/main/module.json5，添加：

"module": {
    "name": "entry",
+   "srcEntry": "./ets/abilityStage/MyAbilityStage.ets",
    "type": "entry",
    .....

"abilities": [
  {
    "name": "EntryAbility",
     .....
     "visible": true,
+    "recoverable": true,
     .....

2.6. 运行

点击右上角的 sync 按钮

或者在命令行终端执行：

cd entry
ohpm install

然后编译、运行即可。

3. 约束与限制

3.1. 兼容性

本文档内容基于以下版本验证通过：

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;
3. RNOH: 0.77.18; SDK: HarmonyOS 6.0.0 Release SDK; IDE: DevEco Studio 6.0.0.858; ROM: 6.0.0.112;
4. RNOH: 0.82.22; SDK: HarmonyOS 6.0.0 Release SDK; IDE: DevEco Studio 6.0.0.878; ROM: 6.0.0.130;

3.2. 权限要求

3.3. 编译运行API要求

4. API

5. 遗留问题

6. 其他

7. 开源协议

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