HarmonyOS 鸿蒙Next 应用级全局弹框

promptAction.openCustomDialog 全局弹窗参考代码如下：

一、新建3个工具类

1、GlobalContext.ets

export class GlobalContext {
private constructor() {
}
private static instance: GlobalContext;
private _objects = new Map<string, Object>();
public static getContext(): GlobalContext {
if (!GlobalContext.instance) {
GlobalContext.instance = new GlobalContext();
}
return GlobalContext.instance;
}
getObject(value: string): Object | undefined {
return this._objects.get(value);
}
setObject(key: string, objectClass: Object): void {
this._objects.set(key, objectClass);
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

2、DialogUtils.ets

import { promptAction } from ‘@kit.ArkUI’
import { GlobalContext } from ‘./GlobalContext’

@Builder
export function customDialogBuilder(content: String) {
Column() {
Text(Tip: ${content}).fontSize(20).height(“30%”)
Text(‘失败原因：失败原因失败原因失败原因失败原因失败原因失败原因失败原因!’).fontSize(16).height(“30%”)
Row() {
Button(“确认”).onClick(() => {
promptAction.closeCustomDialog(getCustomDialogId())
})
Blank().width(50)
Button(“取消”).onClick(() => {
promptAction.closeCustomDialog(getCustomDialogId())
})
}
.margin({ top: 30 })
}.height(200).padding(5)
}
function getCustomDialogId() {
// 取customDialogId
let customDialogId = GlobalContext.getContext().getObject(‘customDialogId’) as number
return customDialogId;
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

3、HttpUtil.ets

import { GlobalContext } from ‘./GlobalContext’;
import { promptAction } from ‘@kit.ArkUI’;
import { customDialogBuilder } from ‘./DialogUtils’;

export function testPromptDialog() {
// 方法调用后使用弹窗
// 使用GlobalContext中UIContext
const that = GlobalContext.getContext().getObject(‘UIContext’) as UIContext;
if (that) {
promptAction.openCustomDialog({
builder: customDialogBuilder.bind(that, “网络请求失败！”)
}).then((dialogId: number) => {
GlobalContext.getContext().setObject(‘customDialogId’, dialogId)
})
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

二、页面测试弹窗效果

1、Index.ets

import { GlobalContext } from ‘…/utils/GlobalContext’
import { router } from ‘@kit.ArkUI’

@Entry
@Component
struct Index {
aboutToAppear(): void {
<span class="hljs-comment"><span class="hljs-comment">// 存入UIContext与customDialogId</span></span>
GlobalContext.getContext().setObject(<span class="hljs-string"><span class="hljs-string">'UIContext'</span></span>, <span class="hljs-keyword"><span class="hljs-keyword">this</span></span>)
GlobalContext.getContext().setObject(<span class="hljs-string"><span class="hljs-string">'customDialogId'</span></span>, <span class="hljs-number"><span class="hljs-number">0</span></span>)
}
build() {
Row() {
Column() {
Button(“跳转其他页面”)
.onClick(() => {
router.pushUrl({ url: “pages/Page2” })
})
}
.width(‘100%’)
}
.height(‘100%’)
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

2、Page2.ets

import { testPromptDialog } from ‘…/utils/HttpUtil’;

@Entry
@Component
struct Page2 {
@State message: string = ‘Hello World’;
build() {
Row() {
Column() {
Button(“promptAction弹窗”)
.onClick(() => {
testPromptDialog()
})
}
.width(‘100%’)
}
.height(‘100%’)
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

可以调用onWillDismiss 这个属性去控制侧滑返回或者点击空白区域弹框不消失，具体用法可以参考链接

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/ide-software-download-0000001507075446-V5?catalogVersion=V5