解决拖拽中断的问题

问题代码

this._group.addEventListener(egret.TouchEvent.TOUCH_BEGIN, this.mouseDown, this);
this._group.addEventListener(egret.TouchEvent.TOUCH_END, this.mouseUp, this);


 private mouseDown(evt: egret.TouchEvent) {
 this._group.addEventListener(egret.TouchEvent.TOUCH_MOVE, this.mouseMove, this);
 }
 /**
  * 拖动
  */
 private mouseMove(evt: egret.TouchEvent) {
     ...
 }
 private mouseUp(evt: egret.TouchEvent) {
 ...
 this.stage.removeEventListener(egret.TouchEvent.TOUCH_MOVE, this.mouseMove, this);
 }

解决方法

//将西面的this._group替换成this.stage即可
this.stage.addEventListener(egret.TouchEvent.TOUCH_MOVE, this.mouseMove, this);
this.stage.removeEventListener(egret.TouchEvent.TOUCH_MOVE, this.mouseMove, this);

如果发现没有“this.stage”请使用以下方法设置

private stage: egret.Stage = egret.MainContext.instance.stage;