拖动时,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
if this.top≤0,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
让动态面板随着手指沿着Y轴移动,设置边界为顶部坐标≤250,底部坐标≥644,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
隐藏 下拉刷新icon。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
else if,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
让动态面板随着手指沿着Y轴移动,设置边界为顶部坐标≤250,底部坐标≥644,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
显示 下拉刷新icon。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
如图所示:文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
等待 500ms,文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
隐藏 下拉刷新icon。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html
(等待500ms是为了更好的模拟刷新等待的效果)文章源自菜鸟学院-https://www.cainiaoxueyuan.com/yuanxing/17184.html