上篇回顾： ArtTS语言基础类库-容器类库内容的学习(2.10.2）

本篇内容： ArtTS系统能力-通知的学习（3.1）

一、 知识储备

1. 基础类型通知

按内容分成四类：

类型	描述
NOTIFICATION_CONTENT_BASIC_TEXT	普通文本类型
NOTIFICATION_CONTENT_LONG_TEXT	长文本类型
NOTIFICATION_CONTENT_MULTILINE	多行文本类型
NOTIFICATION_CONTENT_PICTURE	图片类型

2. 带进度类型通知

3. 带事件响应类型通知

二、 效果一览

三、 源码剖析

import notificationManager from '@ohos.notificationManager'
import http from '@ohos.net.http'
import ResponseCode from '@ohos.net.http'
import image from '@ohos.multimedia.image'
import wantAgent from '@ohos.app.ability.wantAgent'function basicText() {let notificationRequest = {id: 1,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,normal: {title: '通知类型',text: '普通文本类型',additionalText: '我是补充标题'}}}notificationManager.publish(notificationRequest, err => {if (err) {console.error(`普通文本类型通知发布失败： ${err}`)return;}console.info('普通文本类型通知发布成功')})
}function longText() {let notificationRequest = {id: 2,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_LONG_TEXT,longText: {title: '通知类型', //无效text: '长文本类型', //无效additionalText: '我是补充标题 ',longText: '我是长文本我是长文本我是长文本',briefText: '我是简明信息', //无效expandedTitle: '我是扩展文本'}}}notificationManager.publish(notificationRequest, err => {if (err) {console.error('长文本类型通知发布失败：' + err)return;}console.info('长文本类型通知发布成功')})
}function multiline() {let notificationRequest = {id: 3,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_MULTILINE,multiLine: {title: '通知类型', //无效additionalText: '我是补充标题',text: '多行文本类型', //无效briefText: '我是简明信息', //无效longTitle: '我是长文本标题',lines: ['第一行', '第二行', '第三行', '第四行', '第五行']}}}notificationManager.publish(notificationRequest, err => {if (err) {console.error(`多行文本通知发布失败: ${err}`)return;}console.info('多行文本通知发布成功')})
}function picture() {let imgUrl: string = 'https://img1.baidu.com/it/u=3241660985,1063915045&fm=253&fmt=auto&app=138&f=JPEG?w=800&h=1194';http.createHttp().request(imgUrl, (err, data) => {if (err) {console.error(`err is ${JSON.stringify(err)}`)} else {let code = data.responseCode;if (ResponseCode.ResponseCode.OK == code) {let res: any = data.result;let imageSource = image.createImageSource(res)let options = {alphaTye: 0, //透明度editable: false, //是否可编辑pixelFormat: 3, //像素格式scaleMode: 1, //缩略值size: { height: 100, wight: 100 } //创建图片大小}imageSource.createPixelMap(options).then(pixelMap => {let imagePixelMap: PixelMap = undefined;imagePixelMap = pixelMap;let notificationRequest = {id: 4,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_PICTURE,picture: {title: '通知类型',text: '图片通知',additionalText: '我是补充标题',briefText: '我是简明信息',expandedTitle: '扩展消息',picture: imagePixelMap}}}notificationManager.publish(notificationRequest, err => { //	官方解释 :2024.06.30 图片类型通知。（预留能力，暂未支持）。if (err) {console.error(`图片类型通知发布失败: ${err}`)return;}console.info('图片类型通知发布成功')})})}}})
}function progress() {let progress = 1;// for (let i = 0; i < 100; i++) {//   setTimeout(() => {//     progress += 1;////   }, 100);// }//需要先查询系统是否支持进度条模板notificationManager.isSupportTemplate('downloadTemplate').then((data) => {let isSupport: boolean = data;if (isSupport) {let notificationRequest = {id: 5,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,normal: {title: '下载通知',text: '我正在下载',additionalText: '下载通知标题'}},template: { // 构造进度条模板，name字段当前需要固定配置为 downloadTemplatename: 'downloadTemplate',data: {title: '文档下载',fileName: '阿吉',progressValue: 22}}}notificationManager.publish(notificationRequest, err => {if (err) {console.error(`下载进度提醒失败 ${err}`)return;}console.info('下载进度提醒正常')})}}).catch(err => {console.error(`暂不支持：${err.message}`)})
}function action() {let wantAgentObj = null; //用于保存创建成功的wantAgent对象，后续使用其完成触发的动作let wantAgentInfo = { //通过 wantAgentInfo的operationType设置动作类型wants: [{deviceId: '',bundleName: 'com.aji.first',abilityName: 'com.aji.first.SecondAbility',action: '',entities: [],uri: '',parameters: {}}],operationType: wantAgent.OperationType.START_ABILITY,requestCode: 0,wantAgentFlags: [wantAgent.WantAgentFlags.CONSTANT_FLAG]}wantAgent.getWantAgent(wantAgentInfo, (err, data) => {if (err) {console.error('失败： ' + JSON.stringify(err))} else {wantAgentObj = data;}})let notificationRequest = {6id: 6,content: {contentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,normal: {title: '标题',text: '进入应用',additionalText: '欢迎再次使用'},label: '阿吉',wantAgent: wantAgentObj}}notificationManager.publish(notificationRequest, err => {if (err) {console.error('发布失败' + err)return;}console.info('发布成功')})
}@Entry
@Component
struct Index {build() {Column() {Button('普通文本类型').onClick(() => {basicText();}).margin(20)Button('长文本类型').onClick(() => {longText();}).margin(20)Button('多行文本类型').onClick(() => {multiline();}).margin(20)Button('图片类型').onClick(() => {picture();}).margin(20)Button('进度条类型').onClick(() => {progress();}).margin(20)Button('带意图类型').onClick(() => {action();}).margin(20)}.width('100%').height('100%')}
}