微调器单击时如何调用方法？

Question

我有一个微调器， "one","two","three"包含"one","two","three" ，

我想为(that means when click spinner)每个选择(that means when click spinner)调用一个方法。

单击微调器时是否有任何默认方法可用，怎么办

Answer 1

您可以根据需要使用setOnItemSelectedListener

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
    // your code here
}

@Override
public void onNothingSelected(AdapterView<?> parentView) {
    // your code here
}

});

Answer 2

这应该可以解决问题

        Spinner sp = new Spinner(this);         
        ArrayAdapter<String> aa = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, new
        String[]{"one", "two", "three"});       
    sp.setAdapter(aa);
        sp.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
    // your code here
}

@Override
public void onNothingSelected(AdapterView<?> parentView) {
    // your code here
}

});