如何确定 CollapsingToolbar 已折叠? [英] How can I determine that CollapsingToolbar is collapsed?

问题描述

我需要知道 Material Design 库中的 CollapsingToolbar 何时折叠.

I need to know when CollapsingToolbar from material design library is collapsed.

推荐答案

UPDATE: 由于支持 23.1.1+ 的版本问题不再存在，不需要要使用侦听器并禁用滑动刷新布局，它将正常工作(link).

UPDATE: Since support versions of 23.1.1+ the issue is no longer there, no need to use the listener and disable the swipe refresh layout, it will work as it should (link).

在您的 AppBarLayout

AppBarLayout appBarLayout = (AppBarLayout) view.findViewById(R.id.app_bar_layout);
appBarLayout.addOnOffsetChangedListener(this);

并检查 offset 是否为 0，表示工具栏已完全展开.

And check if offset is 0, meaning the toolbar is fully expanded.

@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int offset)
{
    if (offset == 0)
    {
        // Fully expanded
    }
    else
    {
        // Not fully expanded or collapsed
    }
}

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