检查视图元素是否已添加到布局或是否以编程方式添加 [英] Check if view element is added to layout or not programmatically

问题描述

在片段类中，我有条件地将子视图元素以编程方式添加到布局中:

In my fragment class, I add a child view element programmatically to my layout conditionally :

LinearLayout child = (LinearLayout) inflater.inflate(R.layout.child_view, null);

LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT,100);

container.addView(child, params);

由于上面的代码将有条件地运行，因此，在某个时候，我想检查子视图是否已添加，如何通过编程方式进行检查?

Since the above code will be run conditionally, so, at some point, I would like to check if the child view has added or not, how to make this checking programmatically?

推荐答案

我认为您可以简单地使用

I think you can simply use

findViewById(your_view_id) 

方法:如果结果为null，则该视图不存在，否则该视图存在

method: If its result is null the view does not exists, otherwise the view is present

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