相关疑难解决方法(0)

HashMap myMap = (HashMap) getLastNonConfigurationInstance();

myMap始终为null.getLastNonConfigurationInstance()返回一个对象.我的地图有两个键"符号"和"名称".

public Object onRetainNonConfigurationInstance()
    {
        HashMap myMap = new HashMap();
        myMap.put("symbol", this.symbol);
        final Object data = myMap;
        return data;
    }