itemStateChanged twice

 

itemStateChanged 执行了两次

 

itemStateChanged触发了两次

原来的代码:

 @Override
    public void itemStateChanged(ItemEvent e) {
        Object source = e.getSource();
        if ( source instanceof JRadioButton) {
            JRadioButton selectedRadio = (JRadioButton) source;
            if(selectedRadio==groupIdRadio){
                isXml=false;
            }else{
                isXml=true;
            }
            System.out.println("isXml:"+isXml);
        }
    }

 解决方法:增加条件判断:e.getStateChange()==ItemEvent.SELECTED

修改之后的方法:

 @Override
    public void itemStateChanged(ItemEvent e) {
        Object source = e.getSource();
        if (e.getStateChange() == ItemEvent.SELECTED&& source instanceof JRadioButton) {
            JRadioButton selectedRadio = (JRadioButton) source;
            if(selectedRadio==groupIdRadio){
                isXml=false;
            }else{
                isXml=true;
            }
            System.out.println("isXml:"+isXml);
        }
    }

 

 

参考:

http://suckjava.blogspot.com/2009/06/itemlistener.html

http://stackoverflow.com/questions/21926397/jcombobox-itemstatechanged-event-called-twice-at-a-time