微調的默認不工作

Question

我有一個微調設置在屏幕上，我從另一個屏幕傳遞一個字符串。我希望該字符串被設置爲微調器的默認值。我已經看過帖子，並試圖實現它，但不知何故，它不工作。

這裏是我的代碼：

//workRequestFetched is a private String object 
workRequestFetched = extras.getString("workRequest"); 

workRequestSpinner = (Spinner) findViewById(R.id.workRequestSpinner); 

//ServiceCall is a function call to the web service it works fine otherwise, please don't worry about it. 

ArrayList<String> workRequests = ServiceCall.workRequests; 



     ArrayAdapter<String> workRequestAdapter = new ArrayAdapter<String>(this, 
       android.R.layout.simple_spinner_item, 
       workRequests); 

選擇的是布爾如果字符串已通過與否，檢查。我已經打印出來檢查執行線程是否進入if子句，並且確實如此，所以認爲問題不在那裏。

 if(selected){ 
      System.out.println("Entered selected- "+workRequestFetched); 
//This is what supposed to set the spinner's default to the position of the string right? but it doesn't work! 

      int spinnerPosition = workRequestAdapter.getPosition(workRequestFetched); 

      workRequestSpinner.setSelection(spinnerPosition); 


     } 

     workRequestAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 


     workRequestSpinner.setAdapter(workRequestAdapter); 

任何人都可以指出錯誤嗎？謝謝！

Answer 1

您的片段更改爲以下

ArrayAdapter <String> workRequestAdapter = new ArrayAdapter <String> (
this,android.R.layout.simple_spinner_item,workRequests); 
workRequestAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
workRequestSpinner.setAdapter(workRequestAdapter); 
workRequestSpinner.setSelection(workRequestAdapter.getPosition(workRequestFetched));