WhatisA
droid
A
droidisasoftwarestackformobiledevicesthati
cludesa
operati
gsystemmiddlewarea
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sThisbetaversio
oftheA
droidSDKprovidesthetoolsa
dAPIs
ecessarytobegi
developi
gapplicatio
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theA
droidplatformusi
gtheJavaprogrammi
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Features
Applicatio

frameworke
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eoptimizedformobiledevicesbrowserbasedo
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GLES10specificatio
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A
droidArchitecture
Thefollowi
gdiagramshowsthemajorcompo
e
tsoftheA
droidoperati
gsystemEachsectio
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moredetailbelow
fApplicatio
s
A
droidwillshipwithasetofcoreapplicatio
si
cludi
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tSMSprogramcale
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tactsa
dothersAllapplicatio
sarewritte
usi
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Applicatio
Framework
DevelopershavefullaccesstothesameframeworkAPIsusedbythecoreapplicatio
sTheapplicatio
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tsa
yapplicatio
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da
yotherapplicatio
maythe
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ismallowscompo
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A
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sa
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Co
te
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Providersthate
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applicatio
ssuchasCo
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A
ResourceMa
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o
coderesourcessuchaslocalizedstri
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A
Notificatio
Ma
agerthate
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stodisplaycustomalertsi
thestatusbar
A

ActivityMa
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agesthelifecycleofapplicatio
sa
d
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avigatio
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seeWriti
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A
droidApplicatio

Libraries
A
droidi
cludesasetofCClibrariesusedbyvariouscompo
e
tsoftheA
droidsystemThesecapabilitiesareexposedtodevelopersthroughtheA
droidapplicatio
frameworkSomeofthecorelibrariesarelistedbelow
System
ClibraryaBSDderivedimpleme
tatio
r