//​點選按鈕出現對話方塊，輸入內容，並將內容獲取在全域性變數中
case R.id.card: 
     final EditText filename = new EditText(this); 
     filename.setInputType(EditorInfo.TYPE_CLASS_PHONE);//設定輸入時是數字鍵盤
     Builder alerBuidler = new Builder(this); 
     alerBuidler 
       .setTitle("請輸入工號") 
       .setView(filename) 
       .setPositiveButton("確定"
 
, 
       new DialogInterface.OnClickListener() { 
           @Override 
           public void onClick(DialogInterface dialog, 
             int which) { 
                 idcard = filename.getText().toString();                                            
                        } 
       }); 
     aler = alerBuidler.create(); 
     aler.setCanceledOnTouchOutside(false
 
); 
     aler.show(); 
     break;
​