8.0.30版本，camera组件扫码无回调，多个手机出现
8.0.30，camera组件，扫码模式无反应，两个手机升级后都这样 <camera class="camera" mode="scanCode" device-position="back" binderror="onScanCodeError" bindscancode="onScanCode"></camera>
onScanCode:function(eventhandle) {
console.log("onScanCode eventhandle", eventhandle);
}
onScanCode无反应
