By Michael Juntao Yuan
Nokia's sequence forty Developer Platform supplies Java builders entry to the world's highest-volume, fastest-growing, and most enjoyable cellular markets. Nokia sells with reference to a hundred million devices inside of their Developer Platform households each year, and the sequence forty Developer Platform is the highest-volume platform within the relatives. luck in this platform is important for the industrial good fortune of any cellular software. wisdom of the sequence forty Developer Platform might be utilized to the Java surroundings on all Nokia Developer Platform units, together with sequence 60 units. totally reviewed via Nokia's subject material specialists, this ebook covers the whole improvement processfrom layout and coding via checking out and deployment. The authors stroll you thru 11 entire instance purposes, providing downloadable customer and server resource code that you should use to jump-start nearly any undertaking. alongside the best way, the authors remove darkness from the technical underpinnings of sequence forty, evaluation the most important architectural matters, introduce key cellular layout styles, speak about scalability and equipment optimization options, and supply dozens of top practices and tipsmany of that have by no means ahead of been released.
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Additional resources for Developing scalable series 40 applications: a guide for Java developers
If the user needs to access another MIDlet or native application, he would have to exit the MIDlet first. However, it is possible for the device to put a temporary system screen in front of the MIDlet screens to deliver messages that require immediate user attention without actually interrupting the MIDlet execution flow. For example, if we receive a voice call on a Series 40 device while running a MIDlet, the system screen asking us to accept or reject the call is displayed in the foreground. Once we make a selection, the MIDlet UI is returned to the foreground again.
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