不推荐使用setOnTabSelectedListener [英] setOnTabSelectedListener is deprecated

问题描述

对于以下代码，我总是看到划线 setOnTabSelectedListener

I always see a crossed out line setOnTabSelectedListener for the following code

viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        viewPager.setCurrentItem(tab.getPosition());
    }
}

显示的错误是:

setOnTabSelectedListener已弃用

setOnTabSelectedListener is deprecated

但是，该程序似乎正常运行.我可以知道发生了什么吗?

However, the program seems to work just fine. May I know what's going on?

推荐答案

我能知道发生了什么吗?

May i know whats going on ?

已弃用意味着他们认为这样做不是一个好方法，或者他们已经找到了一种更好的方法，并且将来会删除此已弃用的方法.

Deprecated means that they decided this is not a good way to do it or they have found a better way of doing it, and this deprecated method will be removed in the future.

解决方法是使用

The fix is to use addOnTabSelectedListener instead of setOnTabSelectedListener.
It works almost the same way.

不同之处在于，使用 addOnTabSelectedListener :

• 您可以添加多个侦听器.使用 setOnTabSelectedListener ，您只能拥有一个.
• 使用完监听器后，应使用

• you can add multiple listeners. With setOnTabSelectedListener you could only have one.
• you should remove the listener when you're done with it, with removeOnTabSelectedListener.

一般经验法则:永远不要使用不推荐使用的方法.

General rule of thumb: never use deprecated methods.

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