In fact, MIDP application does not need a lot of screen complex Controller and Model, our goal is to meet the basic flexibility while maintaining a simple structure. Therefore, the navigation method is to use the other two binary tree and stack implementation, here we only discuss the implementation of the MIDP with a stack frame navigation, the basic idea is: whenever the advance to the next screen, the first push to the next screen, and then display; When you return to the previous screen, starting with the current screen to pop the stack, and then removed from the stack and displayed on a screen. Thus, each screen displays only need to specify the next screen, without having to remember the previous screen. This model is particularly suitable for the navigation stack a regular "forward", "back" screen. The MIDlet class to run on only one instance, therefore, use the MIDlet class as the controller is quite appropriate. In addition, we have a static variable holds the MIDlet instance, making access more convenient MIDlet: public class ControllerMIDlet extends MIDlet {private static ControllerMIDlet instance = null; private Display display = null; private Stack ui = new Stack; public ControllerMIDlet {instance = this;} protected void startApp {} protected void pauseApp {} protected void destroyApp {}
Specific to the Chinese market, Red Hat is to strengthen regional cooperation, last week, Red Hat and Sichuans largest software outsourcing software companies signed a cooperation agreement reached its peak, co-founded in Chengdu, "Red Hat SOA Solution Center Southwest" and "China SOA Service Center ", the two centers will be in Chengdu education, banking, logistics and other fields, to provide professional software solutions. Cultivating the Chinese market is also Enterprise Linux 5.0 products from the heavyweights start. It is understood that Red Hat would have been added from version 5.0 virtualization, storage management and other functions, it also makes the server operating system software to become more powerful Linux platform. Early August, Red Hat Enterprise Linux 5.1 has released the first beta version. Smaller RHEL 5.1 update, mainly to improve virtualization, laptop and desktop performance improvements, and so on. Virtualization improvements, including the Itanium 2 full virtualization support, support for 64-bit host virtual machines running on 32-bit, and libvirt updates. Q and SOA strategy, Hu Bolin says with a laugh Red Hat SOA also can be understood as "Simple, Open, Affordable". According to Gery Messer, president of Red Hat introduced the Asia-Pacific, Red Hat was founded in 1993, currently operates in 33 countries worldwide, the main provider of operating system platform, Red Hat Enterprise Linux, while also providing a variety of applications, management and Services Oriented Architecture including the JBoss Enterprise Middleware Suite, and support, training and consulting services.