自定义弹窗(CustomDialog)
CustomDialog是自定义弹窗,可用于广告、中奖、警告、软件更新等与用户交互响应操作。开发者可以通过CustomDialogController类显示自定义弹窗。具体用法请参考自定义弹窗。
创建自定义弹窗
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使用@CustomDialog装饰器装饰自定义弹窗。
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@CustomDialog装饰器用于装饰自定义弹框,此装饰器内进行自定义内容(也就是弹框内容)。
@CustomDialog struct CustomDialogExample { controller: CustomDialogController = new CustomDialogController({ builder: CustomDialogExample({}), }) build() { Column() { Text('我是内容') .fontSize(20) .margin({ top: 10, bottom: 10 }) } } }
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创建构造器,与装饰器呼应相连。
@Entry @Component struct CustomDialogUser { dialogController: CustomDialogController = new CustomDialogController({ builder: CustomDialogExample(), }) }
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点击与onClick事件绑定的组件使弹窗弹出。
@Entry @Component struct CustomDialogUser { dialogController: CustomDialogController = new CustomDialogController({ builder: CustomDialogExample(), }) build() { Column() { Button('click me') .onClick(() => { this.dialogController.open() }) }.width('100%').margin({ top: 5 }) } }
弹窗的交互
弹窗可用于数据交互,完成用户一系列响应操作。
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在@CustomDialog装饰器内添加按钮,同时添加数据函数。
@CustomDialog struct CustomDialogExample { cancel?: () => void confirm?: () => void controller: CustomDialogController build() { Column() { Text('我是内容').fontSize(20).margin({ top: 10, bottom: 10 }) Flex({ justifyContent: FlexAlign.SpaceAround }) { Button('cancel') .onClick(() => { this.controller.close() if (this.cancel) { this.cancel() } }).backgroundColor(0xffffff).fontColor(Color.Black) Button('confirm') .onClick(() => { this.controller.close() if (this.confirm) { this.confirm() } }).backgroundColor(0xffffff).fontColor(Color.Red) }.margin({ bottom: 10 }) } } }
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页面内需要在构造器内进行接收,同时创建相应的函数操作。
@Entry @Component struct CustomDialogUser { dialogController: CustomDialogController = new CustomDialogController({ builder: CustomDialogExample({ cancel: ()=> { this.onCancel() }, confirm: ()=> { this.onAccept() }, }), }) onCancel() { console.info('Callback when the first button is clicked') } onAccept() { console.info('Callback when the second button is clicked') } build() { Column() { Button('click me') .onClick(() => { this.dialogController.open() }) }.width('100%').margin({ top: 5 }) } }
弹窗的动画
弹窗通过定义openAnimation控制弹窗出现动画的持续时间,速度等参数。
@CustomDialog
struct CustomDialogExample {
controller?: CustomDialogController
build() {
Column() {
Text('Whether to change a text?').fontSize(16).margin({ bottom: 10 })
}
}
}
@Entry
@Component
struct CustomDialogUser {
@State textValue: string = ''
@State inputValue: string = 'click me'
dialogController: CustomDialogController | null = new CustomDialogController({
builder: CustomDialogExample(),
openAnimation: {
duration: 1200,
curve: Curve.Friction,
delay: 500,
playMode: PlayMode.Alternate,
onFinish: () => {
console.info('play end')
}
},
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
}
build() {
Column() {
Button(this.inputValue)
.onClick(() => {
if (this.dialogController != null) {
this.dialogController.open()
}
}).backgroundColor(0x317aff)
}.width('100%').margin({ top: 5 })
}
}
完整示例
@CustomDialog
struct CustomDialogExample {
cancel?: () => void
confirm?: () => void
controller: CustomDialogController
build() {
Column() {
Text('我是内容').fontSize(20).margin({ top: 10, bottom: 10 })
Flex({ justifyContent: FlexAlign.SpaceAround }) {
Button('cancel')
.onClick(() => {
this.controller.close()
if (this.cancel) {
this.cancel()
}
}).backgroundColor(0xffffff).fontColor(Color.Black)
Button('confirm')
.onClick(() => {
this.controller.close()
if (this.confirm) {
this.confirm()
}
}).backgroundColor(0xffffff).fontColor(Color.Red)
}.margin({ bottom: 10 })
}
}
}
@Entry
@Component
struct CustomDialogUser {
dialogController: CustomDialogController = new CustomDialogController({
builder: CustomDialogExample({
cancel: ()=> { this.onCancel() },
confirm: ()=> { this.onAccept() },
}),
})
onCancel() {
console.info('Callback when the first button is clicked')
}
onAccept() {
console.info('Callback when the second button is clicked')
}
build() {
Column() {
Button('click me')
.onClick(() => {
this.dialogController.open()
})
}.width('100%').margin({ top: 5 })
}
}
相关实例
针对自定义弹窗开发,有以下相关实例可供参考: