Introduction to new features of midp3.0 by Chen yuefeng from: http://blog.csdn.net/mailbomb by browsing midp3.0 early specifications Documentation, the formal documentation may also be modified, however, I would like to briefly summarize some new features of midp3.0 and share them with you. The new features of midp3.0 mainly include the following aspects: 1. libletliblet is a component technology similar to ActiveX. It exists as an independent JAR file and can contain classes and resource files. It can be downloaded through OTA like MIDlet, once downloaded to your mobile phone, you can use it like using system APIs. For the sake of security, liblet cannot execute external programs, and it can also Digitally Sign liblet. 2. Supports the RMS internal swap file. The RMS internal swap file contains one or more recordstore records. It can be downloaded as an independent file or contained in a jar file. The suffix of the file is RMS. To facilitate data exchange, the file must comply with the specific data format and define the detailed format of the file in the specification. 3. The MIDlet update is implemented by installing a specific MIDlet kit to update the MIDlet program. The mobile phone must support confirmation and installation by the user. A user prompt is displayed when the version installed on the local machine is compared. Update information is stored in device identification and request header information. 4. You can set "MIDlet-use-IP-version" in the JAD file to support IPv6. For example, MIDlet-use-IP-version = 66. Specify the local network interface that the mobile phone uses. However, this function is still unknown. 7. The internal exchange protocol (IMC) of the MIDlet can communicate with the MIDlet program running in different execution environments through the IMC protocol. IMC is a low-layer protocol similar to socket, which can be divided into client connection and server connection. 8. added Class A) displaylistener listens to display object status changes B) animatedimage animation implementation c) fileselector adds the screen interface to implement a function similar to opening a dialog box on Windows d) formlayoutpolicy supports form layout format E) menucommand menu button, supports multi-level menus. F) tabbedpane supports advanced interfaces in the property page format. G) liblet supports software components 9. the maximum screen size and minimum screen size supported by the program are specified by the MIDlet-minimum-canvas-size and MIDlet-maximum-canvas-size attributes in the JAD file. verification is performed during installation, installation fails if it does not meet the requirements. 10. The javax. microedition. Event package provides support for communication between applications.
For more details, see midp3.0 standard documentation.
