<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]
})
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