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@ohmi/picker

v2.6.3-rc.3

Published

React Native Picker for iOS, Android, macOS, and Windows

Downloads

5

Readme

模板版本:v0.2.2

[!TIP] Github 地址

简介

本库基于 react-native-picker 修改,适配了 HarmonyOS 平台。

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/picker 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/picker

yarn

yarn add @ohmi/picker

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 * as React from "react";
import { Picker } from "@ohmi/picker";
import { View } from "react-native";

export const PickerExample = ()=>{
  const [selectedLanguage, setSelectedLanguage] = React.useState();

  return (
    <View style={{backgroundColor:"#fff",padding:40}}>
      <Picker
        selectedValue={selectedLanguage}
        onValueChange={(itemValue, itemIndex) => setSelectedLanguage(itemValue)}>
        <Picker.Item label="Java" value="java" />
        <Picker.Item label="JavaScript" value="js" />
      </Picker>
    </View>
  )
}

使用 Codegen

本库已经适配了 Codegen ,在使用前需要主动执行生成三方库桥接代码,详细请参考 Codegen 使用文档

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/picker": "file:../../node_modules/@ohmi/picker/harmony/picker.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 PickerPackge

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}/@ohmi/picker/src/main/cpp" ./picker)
# 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_picker)
# 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 "PickerPackage.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<PickerPackage>(ctx)
    };
}

4.在 ArkTs 侧引入 picker 组件

找到 function buildCustomComponent(),一般位于 entry/src/main/ets/pages/index.etsentry/src/main/ets/rn/LoadBundle.ets,添加:

  ...
+ import { RNCPicker, PICKER_TYPE } from "@ohmi/picker"

 @Builder
 export function buildCustomRNComponent(ctx: ComponentBuilderContext) {
  ...
+ if (ctx.componentName === PICKER_TYPE) {
+   RNCPicker({
+     ctx: ctx.rnComponentContext,
+     tag: ctx.tag
+   })
+ }
...
}
...

[!TIP] 本库使用了混合方案,需要添加组件名。

entry/src/main/ets/pages/index.etsentry/src/main/ets/rn/LoadBundle.ets 找到常量 arkTsComponentNames 在其数组里添加组件名

const arkTsComponentNames: Array<string> = [
  SampleView.NAME,
  GeneratedSampleView.NAME,
  PropsDisplayer.NAME,
+ PICKER_TYPE
  ];

5.在 ArkTs 侧引入 RNCPickerPackage

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

  ...
+ import { RNCPickerPackage } from '@ohmi/picker/ts';

export function createRNPackages(ctx: RNPackageContext): RNPackage[] {
  return [
    new SamplePackage(ctx),
+   new RNCPickerPackage(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。

约束与限制

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/picker 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。

PickerProps

| Name | Description | Type | Required | Platform | HarmonyOS Support | |---------------------------|---------------------------------------------------------------------------------------------------|--------------------------------------------------------------|----------|-----------------------|-------------------| | onValueChange | Callback for when an item is selected. | function | No | All | Yes | | selectedValue | Value matching value of one of the items. Can be a string or an integer. | any | No | All | Yes | | style | NA | pickerStyleType | No | All | Yes | | testID | Used to locate this view in end-to-end tests. | string | No | All | Yes | | enabled | If set to false, the picker will be disabled, i.e. the user will not be able to make a selection. | boolean | No | Android, Web, Windows | Yes | | mode | On Android, specifies how to display the selection items when the user taps on the picker | enum('dialog', 'dropdown') | No | Android | No | | dropdownIconColor | On Android, specifies color of dropdown triangle. | ColorValue | No | Android | No | | dropdownIconRippleColor | On Android, specifies ripple color of dropdown triangle. | ColorValue | No | Android | No | | prompt | Prompt string for this picker, used on Android in dialog mode as the title of the dialog. | string | No | Android | No | | itemStyle | Style to apply to each of the item labels. | text styles | No | iOS, Windows | partially | | numberOfLines | On Android & iOS, used to truncate the text with an ellipsis after computing the text layout. | number | No | Android, iOS | No | | onBlur | NA | function | No | Android | No | | onFocus | NA | function | No | Android | No | | selectionColor | Color to apply to the selection indicator. | ColorValue | No | iOS | Yes | | themeVariant | NA | enum('light', 'dark') | No | iOS | No |

PickerItemProps

| Name | Description | Type | Required | Platform | HarmonyOS Support | |----------------------|----------------------------------------------------------------------------------------------------------|---------------|----------|----------|-------------------| | label | Displayed value on the Picker Item. | string | Yes | All | Yes | | value | Actual value on the Pickmodeler Item. | number,string | Yes | All | Yes | | color | Displayed color on the Picker Item. | ColorValue | Yes | All | No | | fontFamily | Displayed fontFamily on the Picker Item. | string | No | All | No | | style | Style to apply to individual item labels. | ViewStyleProp | No | Android | No | | enabled | If set to false, the specific item will be disabled, i.e. the user will not be able to make a selection. | boolean | No | Android | No | | contentDescription | Sets the content description to the Picker Item. | string | No | Android | No |

静态方法

| Name | Description | Type | Required | Platform | HarmonyOS Support | |---------|---------------------------------|----------|----------|----------|-------------------| | blur | Programmatically closes picker. | function | No | Android | No | | focus | Programmatically opens picker. | function | No | Android | No |

遗留问题

  • [ ] numberOfLines 属性不支持issue#2
  • [ ] PickerItemProps 的 color 和 fontFamily 不支持(OH 的 Picker 组件不支持单独设置 PickerItem 的样式) issue#21
  • [ ] themeVariant 属性不支持issue#22
  • [ ] itemStyle 不支持设置 textAlign(OH 的 Picker 不支持设置)issue#23

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。