麒麟系统下firefox浏览器openlayers地图拖拽、双击无效

　　依照用户的国产化需求，我们在现有的国产化机器上部署了之前就已经完成的系统。测试发现所有页面的地图拖拽和双击功能不能正常使用。

　　解决思路：首先写个简单的demo，只有点击事件。测试结果：依旧无效。问题初步定位，跟ol源代码有关系。进一步分析，拖拽和双击无效 ，说明和点击事件有关。查阅原代码（过程省略，因为找了太久我才发现是这里），点击事件相关内容：

ol.interaction.Pointer.prototype.updateTrackedPointers_ = function(mapBrowserEvent) {
  if (this.isPointerDraggingEvent_(mapBrowserEvent)) {
    var event = mapBrowserEvent.pointerEvent;
 
    if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERUP) {
      delete this.trackedPointers_[event.pointerId];
    } else if (mapBrowserEvent.type ==
        ol.MapBrowserEvent.EventType.POINTERDOWN) {
      this.trackedPointers_[event.pointerId] = event;
    } else if (event.pointerId in this.trackedPointers_) {
      // update only when there was a pointerdown event for this pointer
      this.trackedPointers_[event.pointerId] = event;
    }
    this.targetPointers = ol.object.getValues(this.trackedPointers_);
  }
};

调试发现这里三个if ，我的event一个也不喜欢。所以问题位置找到了，把event强行加给trackedPointers_问题就解决啦。

ol.interaction.Pointer.prototype.updateTrackedPointers_ = function(mapBrowserEvent) {
  if (this.isPointerDraggingEvent_(mapBrowserEvent)) {
    var event = mapBrowserEvent.pointerEvent;
 
    if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.POINTERUP) {
      delete this.trackedPointers_[event.pointerId];
    } else if (mapBrowserEvent.type ==
        ol.MapBrowserEvent.EventType.POINTERDOWN) {
      this.trackedPointers_[event.pointerId] = event;
    } else if (event.pointerId in this.trackedPointers_) {
      // update only when there was a pointerdown event for this pointer
      this.trackedPointers_[event.pointerId] = event;
    }else{
      //↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓兼容华为银河麒麟桌面系统浏览器地图无法拖拽问题↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
      this.trackedPointers_["1"] = event;
  }
    this.targetPointers = ol.object.getValues(this.trackedPointers_);
  }

困扰我这么久的问题居然一句话就能搞定~~