Advanced Rndroid Rpps

Advanced applications are born when people come up with good ideas about what useful work can be accomplished by the hardware that is available. In order to stimulate those ideas, it is important to know what devices exist in your Android cellphone. For example, the fact that a magnetic compass is one of the devices built into the cellphone implies that a program can know what direction it is pointing at relative to the Earth. Advanced applications that display the correct view of the stars in the sky that the user is looking at are therefore possible. By combining current data from the magnetic compass and the real time clock, an accurate sky map can be prepared and displayed for the user. This chapter enumerates the devices found in the G1 Android cellphone as a means of stimulating good application ideas.

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