找到一个值并选择它:

private void selectValue(Spinner spinner, Object value) {
    for (int i = 0; i < spinner.getCount(); i++) {
        if (spinner.getItemAtPosition(i).equals(value)) {
            spinner.setSelection(i);
            break;
        }
    }
}

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);
    }
});

这招对我很管用:

@Override
protected void onStart() {
    super.onStart();
    mySpinner.setSelection(position);
}

它类似于@sberezin的解决方案，但在onStart()中调用setSelection()。

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)

这是我的工作。

 spinner.setSelection(spinner_adapter.getPosition(selected_value)+1);

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)。