如何通过其值而不是位置来设置微调默认值? [英] How to set Spinner Default by its Value instead of Position?

问题描述

我在数据库中有1-50条记录.我正在使用游标获取这些数据，并使用简单游标适配器将这些值设置为Spinner.现在我需要的是设置一个值，比如说第39个值作为默认值.但是我不希望通过其位置来设置它的值.

I have 1-50 records in the database. I am fetching those data using cursor and set those values to Spinner using Simple Cursor Adapter. Now what i need is i want to set one value say 39th value as default. But not by its position i want to set by its value.

我知道如何根据其位置设置微调器默认值

I know how to set the spinner default by its position

   spinner.setSelection(39) 

会将微调器设置为该值.

will set the spinner to that value.

但是我对通过数据库中的值(文本)设置微调器默认值一无所知. 我知道数据库中的值.例如，书"是微调器中的值之一.我需要将微调框默认设置为书籍.

But i didn't have any idea about setting the spinner default by its value(text) in the database. I know the values in the database. For eg "books" is one of the value in the spinner. I need to set the spinner default as books.

有没有办法做到这一点?

Is there any possible way to do this?

推荐答案

最后，我通过使用以下方法解决了该问题，其中旋转器的位置可以通过其字符串获取

Finally, i solved the problem by using following way, in which the position of the spinner can be get by its string

private int getPostiton(String locationid,Cursor cursor)
{
    int i;
    cursor.moveToFirst(); 
    for(i=0;i< cursor.getCount()-1;i++)
    {  

        String locationVal = cursor.getString(cursor.getColumnIndex(RoadMoveDataBase.LT_LOCATION));  
        if(locationVal.equals(locationid))
        { 
            position = i+1;  
            break;
        }
        else
        {
            position = 0;
        }
        cursor.moveToNext();  
    } 

调用方法

    Spinner location2 = (Spinner)findViewById(R.id.spinner1);
    int location2id = getPostiton(cursor.getString(3),cursor);
    location2.setSelection(location2id);

我希望它会对某些人有所帮助.

I hope it will help for some one..

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