camera组件scanCode模式下scan-area无法动态修改 - WXOPEN Club

<camera

device-position="back"

flash="off"

mode="scanCode"

scan-area="{{scanArea}}"

bindscancode="handleRecognizeCode"

binderror="handleError"

class="pusher">

<cover-view class="liver-mask">

<cover-view class="lcd-labelcode-{{recognizeStep}}" />

</cover-view>

</camera>

业务需要根据步骤动态设置 ScanArea 的值，用于框定特定位置的识别区域，但发现 setData 之后camera组件没有更新对应的 scan-area ：

const SCAN_AREAS = [

[0, 60, winWidth, 60],

[0, 204, winWidth, 50],

[0, 260, winWidth, 50]

]

this.setData({

recognizeStep: 2,

scanArea: SCAN_AREAS[1]

})