Java 如何使用带微调器的改装检索2个值

我有这样的JSON代码，我想当我选择spinner selecteditem的值是Baru时，它会显示在Toast Baru的id中

JSON:

到目前为止，我已经尝试从JSON显示Baru的id：

spinnerProvinsi.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
        int IDProvinces = getProvincesIDList.get(i - 1);
        Toast.makeText(getContext(), "ID Province : " + IDProvinces, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView<?> adapterView) {

    }
});

---

不要提供

i-1

。您的索引也从0开始，但当您尝试选择baru时，它将占据位置

0-1=-1

。所以只需提供i，它是ArrayList中baru的索引

spinnerProvinsi.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
        int IDProvinces = getProvincesIDList.get(i);
        Toast.makeText(getContext(), "ID Province : " + IDProvinces, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView<?> adapterView) {

    }
});

SpinnerProvensi.setOnItemSelectedListener（新的AdapterView.OnItemSelectedListener（）{
@凌驾
已选择公共视图（AdapterView AdapterView、View视图、int i、long l）{
int IDProvinces=getProvincesIDList.get（i）；
Toast.makeText（getContext（），“ID Province:+IDProvinces，Toast.LENGTH_SHORT）.show（）；
}
@凌驾
未选择公共无效（AdapterView AdapterView）{
}
});

java.lang.ArrayIndexOutOfBoundsException: length=49; index=-1
    at java.util.ArrayList.get(ArrayList.java:439)
    at com.product.shopciety.ui.menu.menu_signin.menu.MenuTambahAlamatFragment$2$1.onItemSelected(MenuTambahAlamatFragment.java:128)

spinnerProvinsi.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
        int IDProvinces = getProvincesIDList.get(i);
        Toast.makeText(getContext(), "ID Province : " + IDProvinces, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView<?> adapterView) {

    }
});