HarmonyOS 鸿蒙Next 自定义的Dialog，如何不在左右两侧留边距，直接填满屏幕宽度呢

HarmonyOS 鸿蒙Next 自定义的Dialog，如何不在左右两侧留边距，直接填满屏幕宽度呢

自定义的Dialog，如何不在左右两侧留边距，直接填满屏幕宽度呢 代码如下:

@CustomDialog 
export struct CustomDatePickerDialog { 
    private controller: CustomDialogController = new CustomDialogController({ 
        builder: CustomDatePickerDialog() 
    }); 
    
    private onDateSelect: (selectDate: string) => void = () => { }; 
    private selectDate: string = ""; 

    build() { 
        Column() { 
            Row() { 
                Image($r("app.media.ic_back_grey")) 
                    .width(20) 
                    .height(26) 
                    .padding(5) 
                    .margin(10) 
                    .onClick(() => { 
                        this.controller.close(); 
                    }); 

                Blank(); 

                Text("完成") 
                    .fontColor($r("app.color.color33")) 
                    .padding(10) 
                    .fontSize(15) 
                    .onClick(() => { 
                        this.onDateSelect(this.selectDate); 
                        this.controller.close(); 
                    }); 
            }.width("100%").height(45); 

            DatePicker({ 
                start: DateUtils.getToday(), 
                end: DateUtils.getLastDayOfYear(30), 
                selected: DateUtils.getToday() 
            }) 
            .width("100%") 
            .onDateChange((value) => { 
                this.selectDate = DateUtils.getFormatDateStr(value, "yyyy-MM-dd"); 
            }); 
        }.width("100%").backgroundColor(Color.White); 
    } 

    private datePickerDialogController: CustomDialogController | null = 
        new CustomDialogController({ 
            builder: CustomDatePickerDialog({ 
                onDateSelect: (selectDate) => { 
                    ToastUtils.showToast(selectDate); 
                } 
            }), 
            cornerRadius: 0, 
            alignment: DialogAlignment.Bottom, 
            backgroundColor: Color.White, 
            autoCancel: false, 
            height: 230, 
            onWillDismiss: () => { } 
        }); 
}