相关疑难解决方法(0)

首先是一点背景:

我在scrollview中有一个布局.首先,当用户在屏幕上滚动时,滚动视图滚动.但是,经过一定量的滚动后,我要禁用滚动视图上的滚动,将"滚动焦点"移动到子布局内的webview上.这样,scrollview会将所有滚动事件都粘贴到其中的webview中.

因此,对于解决方案,当达到滚动阈值时,我从scrollview中删除子布局并将其放在scrollview的父级中.(并使scrollview不可见).

// Remove the child view from the scroll view
scrollView.removeView(scrollChildLayout);

// Get scroll view out of the way
scrollView.setVisibility(View.GONE);

// Put the child view into scrollview's parent view
parentLayout.addView(scrollChildLayout);

一般理念:( - >表示包含)

之前:parentlayout - > scrollview - > scrollChildLayout

之后:parentLayout - > scrollChildLayout

上面的代码给了我这个例外:

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
           at android.view.ViewGroup.addViewInner(ViewGroup.java:1976)
           at android.view.ViewGroup.addView(ViewGroup.java:1871)
           at android.view.ViewGroup.addView(ViewGroup.java:1828)
           at android.view.ViewGroup.addView(ViewGroup.java:1808)

你知道发生了什么吗？我显然在父级上调用了removeView.