Printing a variables by using XML

How can I print the string variables by using XML? Here is an example shows what I want to do. I want to use the second way with string variables.

1-

   TextView tv = new TextView(this);
   tv.setText("Hello, Android");
   setContentView(tv);

2-

XML

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello, Android! I am a stri开发者_C百科ng resource!</string>
    <string name="app_name">Hello, Android</string>
</resources>

Java

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}

OK, first your main layout must contain a TextView with an id specified. Then you can use this code: setContentView(R.layout.main); TextView textView = (TextView)findViewById(R.id.text_view); textView.setText(getString(R.id.hello)); Hope this helps.