如何处理NumberPicker值的变化？

NumberPicker.OnValueChangeListener valueChangeListener = new NumberPicker.OnValueChangeListener() {
    @Override
    public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
        // 处理值变化的逻辑
    }
};

NumberPicker numberPicker = findViewById(R.id.numberPicker);
numberPicker.setOnValueChangedListener(valueChangeListener);

@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
    // 更新UI界面
    textView.setText("选择的值为：" + newVal);
    
    // 执行计算
    int result = newVal * 2;
    
    // 发送网络请求
    String url = "http://example.com/api/value/" + newVal;
    // ...
}