LinearLayout和FitWindowsLinearLayout有什么区别? [英] What is the difference between LinearLayout and FitWindowsLinearLayout?

问题描述

在创建Layout,时，我跨过FitWindowsLinearLayout，但似乎无法理解LinearLayout和FitWindowsLinearLayout之间的区别.

While creating a Layout, I cam across FitWindowsLinearLayout but can't seem to understand the difference between LinearLayout and FitWindowsLinearLayout.

那么，我们什么时候应该使用FitWindowsLinearLayout?

So, when should we use FitWindowsLinearLayout?

FitWindowsLinearLayout

推荐答案

首先，您可以看到它是

First, as you can see it is annotated with @hide, which means, that it is not exposed to public API. That means that you should not use it.

第二，回答您的问题:从实现中可以看到，它有一个公共方法，该方法设置了一个侦听器:

Secondly, to answer your question: as you can see from the implementation, it has one public method, which sets a listener:

    public void setOnFitSystemWindowsListener(OnFitSystemWindowsListener listener) {
        mListener = listener;
    }

当调用fitSystemWindows(Rect)时，将调用此侦听器:

And this listener would be called when fitSystemWindows(Rect) is called:

    @Override
    protected boolean fitSystemWindows(Rect insets) {
        if (mListener != null) {
            mListener.onFitSystemWindows(insets);
        }
        return super.fitSystemWindows(insets);
    }

这意味着，您可以通过以下方式检索Rect insets:

This means, that you can retrieve Rect insets following way:

    FitWindowsLinearLayout layout = new FitWindowsLinearLayout(context);

    layout.setOnFitSystemWindowsListener(new OnFitSystemWindowsListener() {
        boolean onFitSystemWindows(Rect insets) {
            // interact with `insets`
            return true;
        }
    })

要了解什么是插图，请参见此说明.

To know what are insets see this explanation.

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