HarmonyOS 鸿蒙Next 有没有一种方法可以把全局的自定义dialog都关闭

可以创建一个全局弹窗管理的对象，注册全局事件来维护弹窗弹窗对象。参考代码如下：

可以创建一个全局弹窗管理的对象，注册全局事件来维护弹窗弹窗对象。参考代码如下：
EntryAbility.ets文件
onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
   let context = this.context;
   let eventhub = this.context.eventHub;
   AppStorage.setOrCreate('dialogList', []);
   eventhub.on('addDiaLog', (data: CustomDialogController ) => {
         let dialogList:SubscribedAbstractProperty<CustomDialogController[]> = AppStorage.link('dialogList');
         let dialoginfo:CustomDialogController[] = dialogList.get();
         dialoginfo.push(data);
         dialogList.set(dialoginfo)
    });
   eventhub.on('closeAllDiaLog', ()=>{
        let dialogList:SubscribedAbstractProperty<CustomDialogController[]> = AppStorage.link('dialogList');
        let dialoginfo:CustomDialogController[] = dialogList.get();
        for (let elem of dialoginfo.values()) {
              elem.close();
        }
   })
   hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
}
复制
Index.ets文件
import common from '[@ohos](/user/ohos).app.ability.common';
[@CustomDialog](/user/CustomDialog)
struct CustomDialogExampleTwo {
 private context = getContext(this) as common.UIAbilityContext;
 controllerTwo?: CustomDialogController
 build() {
   Column() {
     Text('我是第二个弹窗')
       .fontSize(30)
       .height(100)
     Button('点我关闭所有弹窗')
       .onClick(() => {
         this.context.eventHub.emit('closeAllDiaLog');
         // if (this.controllerTwo != undefined) {
         // this.controllerTwo.close()
         // }
       })
       .margin(20)
   }
 }
}

[@CustomDialog](/user/CustomDialog)
struct CustomDialogExample {
 private context = getContext(this) as common.UIAbilityContext;
 [@Link](/user/Link) textValue: string
 [@Link](/user/Link) inputValue: string
 dialogControllerTwo: CustomDialogController | null = new CustomDialogController({
   builder: CustomDialogExampleTwo(),
   alignment: DialogAlignment.Bottom,
   offset: { dx: 0, dy: -25 } })
 controller?: CustomDialogController
 // 若尝试在CustomDialog中传入多个其他的Controller，以实现在CustomDialog中打开另一个或另一些CustomDialog，那么此处需要将指向自己的controller放在所有controller的后面
 cancel: () => void = () => {
 }
 confirm: () => void = () => {
 }
 aboutToAppear() {
   this.context.eventHub.emit('addDiaLog', this.dialogControllerTwo);
 }
 build() {
   Column() {
     Text('Change text').fontSize(20).margin({ top: 10, bottom: 10 })
     TextInput({ placeholder: '', text: this.textValue }).height(60).width('90%')
       .onChange((value: string) => {
         this.textValue = value
       })
     Text('Whether to change a text?').fontSize(16).margin({ bottom: 10 })
     Flex({ justifyContent: FlexAlign.SpaceAround }) {
       Button('cancel')
         .onClick(() => {
           if (this.controller != undefined) {
             this.controller.close()
             this.cancel()
           }
         }).backgroundColor(0xffffff).fontColor(Color.Black)
       Button('confirm')
         .onClick(() => {
           if (this.controller != undefined) {
             this.inputValue = this.textValue
             this.controller.close()
             this.confirm()
           }
         }).backgroundColor(0xffffff).fontColor(Color.Red)
     }.margin({ bottom: 10 })

     Button('点我打开第二个弹窗')
       .onClick(() => {

         if (this.dialogControllerTwo != null) {
           this.dialogControllerTwo.open()
         }
       })
       .margin(20)
   }.borderRadius(10)
   // 如果需要使用border属性或cornerRadius属性，请和borderRadius属性一起使用。
 }
}

[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index {
 private context = getContext(this) as common.UIAbilityContext;
 [@State](/user/State) textValue: string = ''
 [@State](/user/State) inputValue: string = 'click me'
 dialogController: CustomDialogController | null = new CustomDialogController({
   builder: CustomDialogExample({
     cancel: ()=> { this.onCancel() },
     confirm: ()=> { this.onAccept() },
     textValue: $textValue,
     inputValue: $inputValue
   }),
   cancel: this.exitApp,
   autoCancel: true,
   alignment: DialogAlignment.Bottom,
   offset: { dx: 0, dy: -20 },
   gridCount: 4,
   customStyle: false,
   cornerRadius: 10,
 })

 aboutToAppear() {
   this.context.eventHub.emit('addDiaLog', this.dialogController);
 }
 // 在自定义组件即将析构销毁时将dialogControlle置空
 aboutToDisappear() {
   this.dialogController = null // 将dialogController置空
 }

 onCancel() {
   console.info('Callback when the first button is clicked')
 }

 onAccept() {
   console.info('Callback when the second button is clicked')
 }

 exitApp() {
   console.info('Click the callback in the blank area')
 }
 build() {
   Column() {
     Button(this.inputValue)
       .onClick(() => {
         if (this.dialogController != null) {
           this.dialogController.open()
         }
       }).backgroundColor(0x317aff)
   }.width('100%').margin({ top: 5 })
 }
}