模板版本：v0.2.2
[!TIP] Github 地址
请到三方库的 Releases 发布地址查看配套的版本信息：@react-native-oh-tpl/react-native-text-size 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 install @react-native-oh-tpl/react-native-text-sizeyarn add @react-native-oh-tpl/react-native-text-size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, { useState, useEffect } from 'react';
import {
ScrollView,
Text,
View,
Dimensions,
TextInput
} from 'react-native';
import RTNTextSize, { TSFontSpecs, TSFontInfo } from 'react-native-text-size'
export default function TextSizeExample() {
const [res, setRes] = useState<string[]>([])
const [res2, setRes2] = useState<string[]>([])
const fontFamily = 'HarmonyOS Sans SC'
const [texts, setTexts] = useState<string>('I rnTextSize ❤️')
const [texts3, setTexts3] = useState<string>('')
const [width, setWidth] = useState<number>();
const [height, setHeight] = useState<number>();
const fontSpecs: TSFontSpecs = {
fontFamily: undefined,
fontSize: 20,
fontStyle: 'normal',
fontWeight: '700',
}
type State = { heights2: number[] }
const [texts2, setTexts2] = useState(['I ❤️ rnTextSize', 'I ❤️ rnTextSize using flatHeights', 'Thx for flatHeights', 'test123',])
const [heights2, setHeights2] = useState<number[]>([]);
const fontSpecs2: TSFontSpecs = {
fontFamily: undefined,
fontSize: 20,
fontStyle: 'italic',
fontWeight: 'bold',
}
const [key, setKey] = useState({})
const [info, setInfo] = useState<TSFontInfo>()
const fontSpecs3: TSFontSpecs = {
fontFamily: 'harmony',
textBreakStrategy: 'balanced',
}
useEffect(() => {
const myFun = async () => {
const resp = await RTNTextSize.fontFamilyNames();
setRes(resp)
const resp2 = await RTNTextSize.fontNamesForFamilyName(fontFamily);
setRes2(resp2)
setTexts(texts)
const width = Dimensions.get('window').width * 0.8
const newHeights = await RTNTextSize.measure({
text: texts, // array of texts to measure, can include symbols
width: width, // max-width of the "virtual" container
...fontSpecs, // RN font specification
})
setHeight(newHeights.height);
setWidth(newHeights.width)
setTexts2(texts2)
const width2 = Dimensions.get('window').width * 0.8
const newHeights2 = await RTNTextSize.flatHeights({
text: texts2, // array of texts to measure, can include symbols
width: width2, // max-width of the "virtual" container
...fontSpecs2, // RN font specification
})
setHeights2(newHeights2);
const keyp = await RTNTextSize.specsForTextStyles();
setKey(keyp)
const infos = await RTNTextSize.fontFromSpecs(fontSpecs3);
setInfo(infos)
}
myFun()
}, [])
return (
<ScrollView style={{ flexGrow: 1 }}>
<View style={{ paddingLeft: 12, paddingRight: 12 }}>
<Text>
measure:[fontFamily: undefined,fontSize: 20,fontStyle: 'normal', 正斜fontWeight: '700']
</Text>
<Text style={{
width: width,
height: height,
...fontSpecs
}}>
{texts}
</Text>
<TextInput
value={texts}
onChangeText={value => { setTexts(value) }}
style={{ width: '100%', height: 28, borderWidth: 2, borderColor: 'black' }}
/>
<Text>
flatHeights:[fontFamily: undefined,fontSize: 20,fontStyle: 'italic', fontWeight: 'bold']
</Text>
{texts2.map(
(texts2, index) => (
<Text key = {index} style={{ height: heights2[index], ...fontSpecs2 }}>
{texts2}
</Text>
)
)}
<TextInput
value = {texts3}
onChangeText={value => {
let value2 =value.split(",");
setTexts3(value)
setTexts2(value2)
}}
style={{ width: '100%', height: 28, borderWidth: 2, borderColor: 'black' }}
/>
<Text>
specsForTextStyles:获取系统默认配置的字体的具体信息
</Text>
<Text>
{JSON.stringify(key)}
</Text>
<Text>
fontFamilyNames:获取系统默认配置的字体
</Text>
<Text>
{res}
</Text>
<Text>
fontNamesForFamilyName:获取系统字体的属性
</Text>
<Text>
{res2}
</Text>
<Text>
fontFromSpecs:返回从给定规范中获得的字体特征
</Text>
<Text>
{JSON.stringify(info)}
</Text>
</View>
</ScrollView>
)
}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
{
...
"overrides": {
"@rnoh/react-native-openharmony" : "./react_native_openharmony"
}
}目前有两种方法：
- 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）；
- 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",
"@react-native-oh-tpl/react-native-text-size": "file:../../node_modules/@react-native-oh-tpl/react-native-text-size/harmony/text_size.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
打开 entry/src/main/cpp/CMakeLists.txt，添加：
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-oh-tpl/react-native-text-size/src/main/cpp" ./text-size)
# 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_text_size)
# RNOH_END: manual_package_linking_2打开 entry/src/main/cpp/PackageProvider.cpp，添加：
...
+ #include "RNTextSizePackage.h"
using namespace rnoh;
std::vector<std::shared_ptr<Package>> PackageProvider::getPackages(Package::Context ctx) {
return {
...
+ std::make_shared<RNTextSizePackage>(ctx)
};
}打开 entry/src/main/ets/RNPackagesFactory.ts，添加：
...
+ import { RNTextSizePackage } from '@react-native-oh-tpl/react-native-text-size/ts';
export function createRNPackages(ctx: RNPackageContext): RNPackage[] {
return [
...
+ new RNTextSizePackage(ctx)
];
}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。
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：@react-native-oh-tpl/react-native-text-size Releases
[!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。
[!TIP] 参数信息查看 Github 地址
| Name | Description | Type | Required | Platform | HarmonyOS Support |
|---|---|---|---|---|---|
| measure | Measurement Text | TSMeasureResult | No | All | partially |
| flatHeights | Measurement Text | number[] | No | All | yes |
| specsForTextStyles | Get system font information for the running OS | {[key: string]: TSFontForStyle} | No | All | yes |
| fontFromSpecs | Returns the characteristics of the font obtained from the given specifications. | TSFontInfo | No | All | yes |
| fontFamilyNames | Returns a Promise for an array of font family names available on the system | string[] | No | All | yes |
| fontNamesForFamilyName | Return the data of the corresponding font according to the name | string[] | No | All | yes |
- fontFamilyNames&fontNamesForFamilyName 问题:需要依赖手机文件 font 目录下的 json 文件，该文件目前没有预置在手机目录下，会导致该接口调用为空。后续底层框架侧修复该问题 issue#1
- measure方法缺少lineInfo的返回处理 issue#2
本项目基于 The BSD 2-Clause License（BSD） ，请自由地享受和参与开源。