微調器單擊時如何調用方法？

Question

我有一個微調器， "one","two","three"包含"one","two","three" ，

我想為(that means when click spinner)每個選擇(that means when click spinner)調用一個方法。

單擊微調器時是否有任何默認方法可用，怎么辦

Answer 1

您可以根據需要使用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

這應該可以解決問題

        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
}

});