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Read e-book online Developing scalable series 40 applications: a guide for Java PDF

By Michael Juntao Yuan

ISBN-10: 0321268636

ISBN-13: 9780321268631

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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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.

Txt simultaneously on different parts of the screen for four seconds. midi audio file. midi"/> Not all devices support the SMIL component in MMS messages. Some earlier Series 40 devices ignore the SMIL attachment altogether but still allow the user to access other attachments in the MMS message. " The Thin-Client Application Paradigm The WAP and MMS applications both run on servers. The handsets merely render the content and capture user interaction. This is commonly known as the thin-client application paradigm.

We give a brief introduction to Symbian OS later in this chapter. Figure 2-7 shows the software stack on Series 60 devices. Figure 2-7. Software stack on Series 60 devices. A Nokia Series 60 device typically has a 176 by 208 LCD screen capable of displaying 65,536 (16-bit) colors. More devices with other UI configurations will come in the future. Compared with a standard Series 40 keypad, a Series 60 keypad has several additional keys, including an Application key, a Clear key, and an Edit key.

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Developing scalable series 40 applications: a guide for Java developers by Michael Juntao Yuan


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