for (int x = 0; x < spRaca.getAdapter().getCount(); x++) {
            if (spRaca.getItemIdAtPosition(x) == reprodutor.getId()) {
                spRaca.setSelection(x);
                break;
            }
        }

Some explanation (at least for Fragments - never tried with pure Activity). Hope it helps someone to understand Android better. Most popular answer by Arun George is correct but don't work in some cases. The answer by Marco HC uses Runnable wich is a last resort due to additional CPU load. The answer is - you should simply choose correct place to call to setSelection(), for example it works for me: @Override public void onResume() { super.onResume(); yourSpinner.setSelection(pos); } But it won't work in onCreateView(). I suspect that is the reason for the interest to this topic. The secret is that with Android you can't do anything you want in any method - oops:( - components may just not be ready. As another example - you can't scroll ScrollView neither in onCreateView() nor in onResume() (see the answer here)

我有一个SimpleCursorAdapter，所以我必须复制在这篇文章中使用响应的数据。所以，我建议你试试这个方法:

for (int i = 0; i < spinnerRegion.getAdapter().getCount(); i++) {
    if (spinnerRegion.getItemIdAtPosition(i) == Integer
        .valueOf(signal.getInt(signal
            .getColumnIndexOrThrow("id_region")))) {
        spinnerRegion.setSelection(i);
        break;
    }
}

我认为这是一个真正的方法

这些答案都没有给我答案，只有这个:

mySpinner.post(new Runnable() {
    @Override
    public void run() {
        mySpinner.setSelection(position);
    }
});

是的，您可以通过在spinner的setSelection函数中传递所需spinner项的索引来实现这一点。例如:

spinnerObject.setSelection (INDEX_OF_CATEGORY)。

你可以像这样简单地设置:spinner.setSelection(1)，而不是1，你可以设置你想要显示的列表的任何位置。