关于onGestureJudgeBegin的使用

.gesture( 
  PanGesture({ direction: PanDirection.Up | PanDirection.Down }) 
    .onActionStart((event: GestureEvent) => { 
      if (event.offsetY < 0 && this.currentIndex < this.imgData.length - 1) { 
        this.currentIndex++; 
      } else if (event.offsetY > 0 && this.currentIndex > 0) { 
        this.currentIndex--; 
      } 
 
      this.scrollerForList.scrollToIndex(this.currentIndex, true); 
 
    }) 
)

.onGestureJudgeBegin((gestureInfo: GestureInfo, event: BaseGestureEvent) => { 
  if (gestureInfo.type == GestureControl.GestureType.PAN_GESTURE) { 
    return GestureJudgeResult.REJECT; 
  } 
  return GestureJudgeResult.CONTINUE;      
})