说明：  1.文本框TextView TextView的作用是用来显示一个文本框，下面我用两种方式为大家呈现TextView， 第一种是通过xml布局文件呈现 ，第二种是通过代码来呈现，由此可见Android 的界面开发真的是非常灵活。
(1. The TextView text box The role of the TextView is used to display a text box, below I in two ways TextView presenting to you, the first kind is through the XML document layout present, the second is through the code to present, this shows Android interface development is really very flexible. )