微调显示第一项文本，而选择其他项目(Spinner displaying first item te

我具有由所述的onResume（）方法内的SimpleCursorAdapter填充一个微调。该选择也被设置在的onResume： spinner.setSelection(x)

当我去到另一个活动，然后返回到本次活动中，微调显示，而不是所选项目的文本的第一个项目的文本。

我该如何解决？

编辑：这是我的代码：

@Override
public void onResume(){
    super.onResume();
    fillSpinner();
}

private void fillSpinner() {
    Db = new DbAdapter(this);
    Db.open();
    final Cursor cursor = Db.getCats(true,true);
    startManagingCursor(cursor);

    String[] from = new String[]{DbAdapter.KEY_NAME};
    int[] to = new int[]{android.R.id.text1};

    SimpleCursorAdapter adapter =
            new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, cursor, from, to);

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

    spinner.setAdapter(adapter);

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
            cursor.moveToPosition(pos);
            spinnerval = cursor.getInt(cursor.getColumnIndexOrThrow(DbAdapter._ID));
            Log.d("spinnerval", spinnerval+"");
        }
        public void onNothingSelected(AdapterView<?> parent) {
        }
    });

    spinner.setSelection(0);
    int now = hour*60*60+minute*60;
    Log.d("fillSpinner","now="+now+" / "+now/60.0/60.0);
    cursor.moveToFirst();
    while(cursor.moveToNext()){
        int s = cursor.getInt(cursor.getColumnIndexOrThrow(DbAdapter.KEY_START));
        int e = cursor.getInt(cursor.getColumnIndexOrThrow(DbAdapter.KEY_END));
        if(e<s){
            if(now>s){
                e+=24*60*60;
            }
            else{ 
                s-=24*60*60;
            }               
        }
        if(s<=now&&e>now){
            spinner.setSelection(cursor.getPosition());
        }
    }


    Db.close();

    spinner.invalidate();

}

EDIT2：截图：

Answer 1: