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具体来说,如果有更多文本要向下滚动,我希望图像弹出几秒钟。弹出的图像不是问题,但我看不到如何设置滚动委托并计算出剩下多少文本。
设置 UItextview 的委托属性
textview.delegate = self; [textview flashScrollIndicators];
它将闪烁一个指示器以显示更多可用的文本。