模板版本：v0.2.2

[!TIP] Github 地址

安装与使用

请到三方库的 Releases 发布地址查看配套的版本信息：@ohmi/react-native-safe-area-context Releases 。对于未发布到npm的旧版本，请参考安装指南安装tgz包。

进入到工程目录并输入以下命令：

npm

npm install @ohmi/react-native-safe-area-context

yarn

yarn add @ohmi/react-native-safe-area-context

下面的代码展示了这个库的基本使用场景：

[!WARNING] 使用时 import 的库名不变。

import React from "react";
import { Text, View } from "react-native";
import {
  SafeAreaProvider,
  SafeAreaView,
  initialWindowMetrics,
} from "react-native-safe-area-context";

const App = () => {
  return (
    <SafeAreaProvider initialMetrics={initialWindowMetrics}>
      <SafeAreaView style={{ flex: 1, backgroundColor: "red" }}>
        <View style={{ flex: 1 }}>
          <Text>hello</Text>
        </View>
      </SafeAreaView>
    </SafeAreaProvider>
  );
};

export default App;

Link

目前 HarmonyOS 暂不支持 AutoLink，所以 Link 步骤需要手动配置。

首先需要使用 DevEco Studio 打开项目里的 HarmonyOS 工程 harmony

1.在工程根目录的 oh-package.json5 添加 overrides 字段

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

2.引入原生端代码

目前有两种方法：

1. 通过 har 包引入（在 IDE 完善相关功能后该方法会被遗弃，目前首选此方法）；
2. 直接链接源码。

方法一：通过 har 包引入

[!TIP] har 包位于三方库安装路径的 harmony 文件夹下。

打开 entry/oh-package.json5，添加以下依赖

"dependencies": {
    "@rnoh/react-native-openharmony": "file:../react_native_openharmony",

    "@ohmi/react-native-safe-area-context": "file:../../node_modules/@ohmi/react-native-safe-area-context/harmony/safe_area.har"
  }

点击右上角的 sync 按钮

或者在终端执行：

cd entry
ohpm install

方法二：直接链接源码

[!TIP] 如需使用直接链接源码，请参考直接链接源码说明

3.配置 CMakeLists 和引入 SafeAreaViewPackage

打开 entry/src/main/cpp/CMakeLists.txt，添加：

```diff
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}/@ohmi/react-native-safe-area-context/src/main/cpp" ./safe-area)
# 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_safe_area)
# RNOH_END: manual_package_linking_2

打开 entry/src/main/cpp/PackageProvider.cpp，添加：

#include "RNOH/PackageProvider.h"
#include "generated/RNOHGeneratedPackage.h"
#include "SamplePackage.h"
+ #include "SafeAreaViewPackage.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<SafeAreaViewPackage>(ctx),
    };
}

4.在 ArkTs 侧引入 SafeAreaViewPackage

打开 entry/src/main/ets/RNPackagesFactory.ts，添加：

...

+ import {SafeAreaViewPackage} from '@ohmi/react-native-safe-area-context/ts';

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

5.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。

兼容性

要使用此库，需要使用正确的 React-Native 和 RNOH 版本。另外，还需要使用配套的 DevEco Studio 和 手机 ROM。

请到三方库相应的 Releases 发布地址查看 Release 配套的版本信息：@ohmi/react-native-safe-area-context Releases

属性

[!TIP] "Platform"列表示该属性在原三方库上支持的平台。

[!TIP] "HarmonyOS Support"列为 yes 表示 HarmonyOS 平台支持该属性；no 则表示不支持；partially 表示部分支持。使用方法跨平台一致，效果对标 iOS 或 Android 的效果。

组件 SafeAreaProvider

You should add SafeAreaProvider in your app root component. You may need to add it in other places like the root of modals and routes when using react-native-screens.

Note that providers should not be inside a View that is animated with Animated or inside a ScrollView since it can cause very frequent updates.

| Name | Description | Type | Required | Platform | HarmonyOS Support | | ---------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ | -------- | -------- | -------- | | Props | Accepts all View props. Has a default style of {flex: 1}. | object | no | All | yes | | initialMetrics | Can be used to provide the initial value for frame and insets, this allows rendering immediatly. See optimization for more information on how to use this prop. | object | no | All | yes |

组件 SafeAreaView

SafeAreaView is a regular View component with the safe area insets applied as padding or margin.

| Name | Description | Type | Required | Platform | HarmonyOS Support | | ------- | ----------------------------------------------------------------------------------------------- | ------ | -------- | -------- | -------- | | Props | Accepts all View props. Has a default style of {flex: 1}. | object | no | All | yes | | edges | Sets the edges to apply the safe area insets to. Defaults to all. | array | no | All | yes | | mode | Optional, padding (default) or margin. Apply the safe area to either the padding or the margin. | string | no | All | yes |

API

[!TIP] "Platform"列表示该属性在原三方库上支持的平台。

[!TIP] "HarmonyOS Support"列为 yes 表示 HarmonyOS 平台支持该属性；no 则表示不支持；partially 表示部分支持。使用方法跨平台一致，效果对标 iOS 或 Android 的效果。

| Name | Description | Type | Required | Platform | HarmonyOS Support | | ---- | ----------- |----------|----------| -------- | ------------------ | | useSafeAreaInsets | Returns the safe area insets of the nearest provider. | object | no | All | yes | | useSafeAreaFrame | Returns the frame of the nearest provider. This can be used as an alternative to the Dimensions module. | object | no | All | yes | | SafeAreaInsetsContext | React Context with the value of the safe area insets. | object | no | All | yes | | withSafeAreaInsets | Higher order component that provides safe area insets as the insets prop. | function | no | All | yes | | SafeAreaFrameContext | React Context with the value of the safe area frame. | object | no | All | yes | | initialWindowMetrics | Insets and frame of the window on initial render. This can be used with the initialMetrics from SafeAreaProvider | object | no | All | yes |

遗留问题

其他

开源协议

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