EditText动态转换只读/编辑状态

 public class MyActivity extends Activity
 {
     private KeyListener listener;
     private EditText editText;

     public void onCreate(...)
     {
         editText = ... // Get EditText from somewhere
         listener = editText.getKeyListener(); // Save the default KeyListener!!!
         editText.setKeyListener(null); // Disable input
     }

     // When you click your button, restore the default KeyListener
     public void buttonClickHandler(...)
     {
         editText.setKeyListener(listener);
     }
 }

Basically, you first save the EditText's default KeyListener before you call setKeyListener(null). Then, when you click your button, you call setKeyListener again, passing the default listener you previously saved.

以上是来自http://stackoverflow.com/questions/10933056/edit-text-key-listener问题中rainai的回答

好用。