- 苹果6这个版本上不显示button

- 苹果6 10.3.2版本显示button

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<cover-view class="dialog_flex">

    <cover-view bindtap="defaultButton" class="weui-dialog__btn weui-dialog__btn_default flex-1">取消</cover-view>

    <cover-view class="weui-dialog__btn_default">

    <button open-type="openSetting" bindopensetting="opensetting" class="weui-dialog__btn weui-dialog__btn_primary flex-1">去授权</button>

    </cover-view>

</cover-view>