如何从数据库得到微调的值 [英] How to get the values from DB in spinner

问题描述

如何获取值进入从DB微调。我想从DB UI显示值或DATAS。难道光标必要使用填充值到UI？

How to get values into the spinner from the DB. I want to display values or datas on UI from DB. Is it cursor necessary to use to populate the values onto the UI?

推荐答案

我只是跟着事情，才能从数据库中，当值的微调值改变由现在的位置 -

I just follow the things to get the values from database, when the spinner values changed by postion -

Java类的

Spinner spinner = (Spinner) findViewById(R.id.spinner1);
//set some adapter here
spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());

public class MyOnItemSelectedListener implements OnItemSelectedListener 
{
@SuppressWarnings("unused")
public void onItemSelected(AdapterView<?> parent,View view, int pos, long id)
{
try
    {
    switch(parent.getId())
    {
    case R.id.spinner2:

        int selected_spinner_item_position=pos;

        String expired_spinner_item =parent.getItemAtPosition(pos).toString();
        if(selected_spinner_item_position==0)
        {
            //am just using simple cursor adapter here and getting the values from database using dh.fetchAll() when the position is 0
            sc_adapter(dh.fetchAll());
            spinnertemp = selected_spinner_item_position;
        }
        }
    }
}
}

数据库的

public Cursor fetchAll()
{
    SQLiteDatabase db = this.getReadableDatabase();
    cursor = db.query(t1, new String[] {"_id",task, pname, prior, time, dateformat, duptitle,dupname}, "stat=0", null, null, null, prior);
    return cursor;
}

只是做你需要这样的步骤。

Just do what you need like these steps.

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