android - 在 Spinner 中单击多个下拉列表项

Question

当您在下拉微调器的列表微调器中单击所选项目时，不要调用 onItemSelected 方法。我需要点击多个微调器的项目，所以我尝试创建自己的微调器。请帮我做这件事。也许我需要 @Override AdapterView 中的某些方法或其他东西。

Answer 1

试试这个

import android.content.Context;
import android.widget.Spinner;

public class MySpinner extends Spinner {

    public MySpinner(Context context) {
        super(context);
    }

    @Override
    public void setSelection(int position, boolean animate) {
        boolean sameSelected = position == getSelectedItemPosition();
        super.setSelection(position, animate);
        if (sameSelected) {
            // Spinner does not call the OnItemSelectedListener if the same item is selected, so do it manually now
            getOnItemSelectedListener().onItemSelected(this, getSelectedView(), position, getSelectedItemId());
        }
    }

    @Override
    public void setSelection(int position) {
        boolean sameSelected = position == getSelectedItemPosition();
        super.setSelection(position);
        if (sameSelected) {
            // Spinner does not call the OnItemSelectedListener if the same item is selected, so do it manually now
            getOnItemSelectedListener().onItemSelected(this, getSelectedView(), position, getSelectedItemId());
        }
    }
}