如何在屏幕上显示变量的值? [英] How to display the value of a variable on the screen?

问题描述

我知道这是一个非常基本的问题，但是我需要知道如何在屏幕上显示变量的内容.

I know this is very basic question, but I need to know, how I can display the contents of a variable on the screen.

我在布局中使用文本视图吗?

Do I use a textview in my layout?

我有一个textview框，可以在编辑器中将其设置为要说些什么，但我需要编写变量的内容，以便进行一些错误检查.

I have a textview box and I can set it to say something in the editor but I need to write the contents of a variable so I can do some error checking.

有人帮忙吗?

推荐答案

如果在布局XML文件中定义了一个名为textViewName的TextView，则可以在Activity类中执行以下操作:

If you have a TextView named textViewName defined in your layout XML file, you can just do something like this in your Activity class:

setContentView(R.layout.layoutName);
TextView textView = (TextView) findViewById(R.id.textViewName);
textView.setText("text you want to display");

这是您要找的吗?如果您不需要将其显示在屏幕上，而只想调试，则只需使用Log()和logcat来查看消息.

Is this what you're looking for? If you don't need to display it to the screen, and just want to debug, just use Log() and logcat to view the messages.

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