如何从 AdapterView<?> 父项中提取 Spinner Layout id？

Question

这是我的 onItemSelected 代码 spinner。

@Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        // On selecting a spinner item
        String item = parent.getItemAtPosition(position).toString();
        // Showing selected spinner item
        Toast.makeText(parent.getContext(), "Selected: "  , Toast.LENGTH_LONG).show();
        Log.d("Value",parent.toString());
    }

当我打印 parent.tostring 时，它给了我这个：

android.support.v7.widget.AppCompatSpinner{9f46108 VFED..C.. ......ID 552,31-942,169 #7f0800ee app:id/**spinner_walk**}

我想从那里提取id/spinner_walk，有什么办法吗？

Answer 1

要提取设置了 onItemSelected 侦听器的微调器的 ID，您需要获取 adapterView 的 ID，即

@Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    // This will return the id of the selected spinner
    int id = adapterView.getId();

    if(id == R.id.spinner_walk){
      Toast.makeToast(context, "Spinner Walk selected", Toast.LENGTH_SHORT).show();
    }
}

如何从 AdapterView<?> 父项中提取 Spinner Layout id？

How can I extract Spinner Layout id from AdapterView<?> parent?

android

parent

spinner

dropdown