鸿蒙Harmony应用开发—ArkTS-全局UI方法（警告弹窗） - IT评测·应用市场-qidao123.com

// xxx.ets
@CustomDialog
struct CustomDialogExampleTwo {
controllerTwo?: CustomDialogController
build() {
Column() {
Text('我是第二个弹窗')
.fontSize(30)
.height(100)
Button('点我关闭第二个弹窗')
.onClick(() => {
if (this.controllerTwo != undefined) {
this.controllerTwo.close()
}
})
.margin(20)
}
}
}
@CustomDialog
struct CustomDialogExample {
@Link textValue: string
@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 = () => {
}
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
@Component
struct CustomDialogUser {
@State textValue: string = ''
@State inputValue: string = 'click me'
dialogController: CustomDialogController | null = new CustomDialogController({
builder: CustomDialogExample({
cancel: this.onCancel,
confirm: this.onAccept,
textValue: $textValue,
inputValue: $inputValue
}),
cancel: this.existApp,
autoCancel: true,
alignment: DialogAlignment.Bottom,
offset: { dx: 0, dy: -20 },
gridCount: 4,
customStyle: false,
backgroundColor: 0xd9ffffff,
cornerRadius: 10,
})
// 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')
}
existApp() {
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 })
}
}

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