FPL-2 : Unit IV
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Transcript of FPL-2 : Unit IV
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Handheld Device Open Source Operating System
By Shraddha ShelarDYP
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Android Operating System: • Linux Based Open Source operating system
for Smart phones, tablets.• Invented By OHA: Open Handheld Alliance.• Google Announced initial version of Android
Software Development.• Android has its own Virtual machine called
DVM(Dalvik Virtual Machine)
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OHA: Open Handset Alliances:• It is the business alliance firm to develop a
standard mobile device.
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Wireless Application Protocol:
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Android Versions:
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Android Versions: •Android 1.0(Angel Cake): 2008•Android 1.1(Battenberg): Feb 2009•Android 1.5(Cupcake): April 2009•Android 1.6(Donut): Sept 2009•Android 2.0/2.1(Eclair):Oct 2009•Android 2.2-2.3(froyo) :2010•Android 2.3-2.3.7): end 2010•Android 3.0-3.2.6(Honeycomb):2011•Android 4.0-4.0.4(Ice-Cream Sandwich):2012•Android 4.1-4.3.1)2013•Android 4.4-4.4.4(Kitkat)Sept 2013•Android 5.0(Lollipop):nov 2014•Now, Which one is the Latest version ?????????
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Android Architecture:
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Architecture Conti….1. Linux Kernel: It works as HAL(Hardware Abstraction
Layer), Network Management, Device Driver, Process Management
2. Libraries: C/C++ Libraries, Interface Through Java, Surface manager, Graphics, Media Codes, SQLite, Browser Engine
3. Android Runtime: i.Dalvik VM: Dex File, Compact and efficient than class files, Limited Memory and battery power. ii. Core Libraries: Java , Collection of I/O 4. Application Framework: It gives the higher level services
in the form of java classes5. Application.
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Advantage of Android:
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Dis-Advantages:
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Android Application Support:
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Life Cycle of Android Activity:
• OnCreate();• onStart();• onResume();• onPause();• OnStop();• onDistroy();• onRestart();
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Future of Android:
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Conclusion:
• Android is doing progressive development so fast and hence we hope that next version of android will actually overcome all the limitations of it.