/** 
 * 限制回車換行 
 *  
 * @param et 輸入框
 */  
public static void LimitsEditEnter(EditText et) {  
    et.setOnEditorActionListener(new OnEditorActionListener() {  
        @Override  
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {  
            return (event.getKeyCode() == KeyEvent.KEYCODE_ENTER);  //過濾回車鍵輸入
        }  
    });  
}