如何获得多个微调在android系统，其中一个微调的价值取决于其他微调的价值？ [英] How to get multiple spinner in android where value of one spinner depends on value of other spinner?

问题描述

我想在安卓例如1微调为国家的动态微调，并根据国家中选择的价值，我想另一个微调的状态。

I want to have dynamic spinner in android e.g one spinner for country and depending upon the value selected in Country, i want to get another spinner for states.

推荐答案

我相信你可以用OnItemSelectedListener解决这个问题。

I believe you can solve this with the OnItemSelectedListener.

public void onCreate() {
     ....
    Country[] mCountries = ... ;
    final Spinner spinner1 = ...;
    final Spinner spinner2 = ...;

    spinner1.setAdapter(new ArrayAdapter(mCountries);
    spinner1.setOnItemSelectedListener( new OnItemSelectedListener() {

    void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        Country country = (Country) parent.getAdapter().getItem(position);
        spinner2.setAdapter(new ArrayAdapter(country.getStates());
     }
     void onNothingSelected(AdapterView<?> parent) {
        spinner2.setAdapter(null);
     }
    });
 ....
}

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