使用下面的行来选择使用值:

mSpinner.setSelection(yourList.indexOf("value"));

前面的一些答案是非常正确的，我只是想确保你们没有人陷入这样的问题。

如果使用String将值设置为ArrayList。格式，你必须得到值的位置使用相同的字符串结构string .format。

一个例子:

ArrayList<String> myList = new ArrayList<>();
myList.add(String.format(Locale.getDefault() ,"%d", 30));
myList.add(String.format(Locale.getDefault(), "%d", 50));
myList.add(String.format(Locale.getDefault(), "%d", 70));
myList.add(String.format(Locale.getDefault(), "%d", 100));

你必须像这样得到所需值的位置:

myList.setSelection(myAdapter.getPosition(String.format(Locale.getDefault(), "%d", 70)));

否则，您将得到-1，项未找到!

我使用Locale.getDefault()，因为是阿拉伯语。

我希望这对你有帮助。

I had the same issue when trying to select the correct item in a spinner populated using a cursorLoader. I retrieved the id of the item I wanted to select first from table 1 and then used a CursorLoader to populate the spinner. In the onLoadFinished I cycled through the cursor populating the spinner's adapter until I found the item that matched the id I already had. Then assigned the row number of the cursor to the spinner's selected position. It would be nice to have a similar function to pass in the id of the value you wish to select in the spinner when populating details on a form containing saved spinner results.

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {  
  adapter.swapCursor(cursor);

  cursor.moveToFirst();

 int row_count = 0;

 int spinner_row = 0;

  while (spinner_row < 0 || row_count < cursor.getCount()){ // loop until end of cursor or the 
                                                             // ID is found 

    int cursorItemID = bCursor.getInt(cursor.getColumnIndexOrThrow(someTable.COLUMN_ID));

    if (knownID==cursorItemID){
    spinner_row  = row_count;  //set the spinner row value to the same value as the cursor row 

    }
cursor.moveToNext();

row_count++;

  }

}

spinner.setSelection(spinner_row ); //set the selected item in the spinner

}

以下是我的完整解决方案。我有以下enum:

public enum HTTPMethod {GET, HEAD}

用于后续课程

public class WebAddressRecord {
...
public HTTPMethod AccessMethod = HTTPMethod.HEAD;
...

使用HTTPMethod enum-member设置微调器的代码:

    Spinner mySpinner = (Spinner) findViewById(R.id.spinnerHttpmethod);
    ArrayAdapter<HTTPMethod> adapter = new ArrayAdapter<HTTPMethod>(this, android.R.layout.simple_spinner_item, HTTPMethod.values());
    mySpinner.setAdapter(adapter);
    int selectionPosition= adapter.getPosition(webAddressRecord.AccessMethod);
    mySpinner.setSelection(selectionPosition);

其中R.id.spinnerHttpmethod定义在布局文件中，而android.R.layout. httpmethod定义在布局文件中。Simple_spinner_item由android-studio下发。

我在Spinners中保留了一个单独的数组列表。这样我就可以在数组列表上执行indexOf，然后使用该值在Spinner中设置选择。

我正在使用一个自定义适配器，这段代码就足够了:

yourSpinner.setSelection(arrayAdapter.getPosition("Your Desired Text"));

所以，你的代码片段将是这样的:

void setSpinner(String value)
    {
         yourSpinner.setSelection(arrayAdapter.getPosition(value));
    }