Does the Textview.gettext return null?

Question

In the following code,

TextView textv = (TextView)findViewById(R.id.textview);

when I call textv.getText(); while the textview has nothing and is just declared does it returns a charsequence(not null) of what ? I don't get it

Answer 1

getText() will not return null, it will return an empty string if there is no string written in, which is definitely not null

Answer 2

您可以先调试，看看是否在您的活动/片段中找到了textview。 尝试if（texttv！= null）并查看它显示的内容。很可能在您的xml文件中找不到它。 您也可以在初始化后立即尝试设置虚拟文本。 textv.setText（“按代码设置的文本”）; 如果您在textview中看到文本，那么您将知道它是否已分配。 希望它有所帮助！