1/82ANDROID DEVELOPMENTVuk
Janji[[email protected]]2/82ToC4INTRO1USER
INTERFACE2ADDITIONAL API FEATURES3DEBUGGING5OPTIMISATIONS6ANATOMY
OF AN APPLICATION3/82Intro | quick start Android S! "So#$%are
evelopmen$ !i$& J! A' "Android evelopmen$ 'ool() *clip(e +*
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...;/824INTRO1USER INTERFACE2ADDITIONAL API
FEATURES3DEBUGGING5OPTIMISATIONS6ANATOMY OF AN
APPLICATION1tate$Bundle saved;nstance>tate%
!super.on(estore;nstance>tate$saved;nstance>tate%;value -
saved;nstance>tate.get>tring$.key1%;valueA -
saved;nstance>tate.get@loatArray$.keyA1%;*14/82Apps | intnt
Allo%( communica$ion 5e$%een componen$(2 1e((a,e pa((in,2
=undle;ntent intent - ne' ;ntent$CurrentActivity.this?
#therActivity.class%;startActivity$intent%;18/82Apps |
intnt"#verridepulic void onCreate$Bundle saved;nstance>tate%
!super.onCreate$saved;nstance>tate%;setContent&ie'$(.layout.main%;//
Button listenerButton tn>tart - $Button%
)ind&ie'By;d$(.id.tn7start%;tn>tart.set#nClick5istener$ne'
&ie'.#nClick5istener$% ! pulic void onClick$&ie' vie'% !
;ntent intent - ne' ;ntent$CurrentActivity.this?
#therActivity.class%;startActivity$intent%; **%;*1;/82Apps |
t&ra"Button tnBlay - $Button%
)ind&ie'By;d$(.id.tnBlay%;tnBlay.set#nClick5istener$ne'
&ie'.#nClick5istener$% !pulic void onClick$&ie' vie'%!//
Cain 8hread locks8hread ackgroundCusic8hread - ne' 8hread$ne'
(unnale$% ! pulic void run$% ! playCusic$%; **%;
ackgroundCusic8hread.start$%;**%;2ervice done1?
8oast.5E:H8D75#:H%.sho'$%;**20/82Apps | notifications 'oa($
Aler$ialo, Ao$i#ica$ion8oast.make8ext$this? .:oti)ication text1?
8oast.5E:H8D7>D#(8%.sho'$%;24/82Apps | manifst+,xml
version-./.01 encoding-.ut)231,4+mani)est
xmlns6android-.http6//schemas.android.com/apk/res/android1package-.uk.ac.ic.doc1
android6versionCode-./1android6version:ame-./.014+application
android6icon-."dra'ale/icon1 android6lael-."string/app7name14
+activity
android6name-..>ampleActivity1android6lael-."string/activity7title7text7re)14
+intent2)ilter4/* ... */ +/intent2)ilter4
+/activity4+/application4+uses2sdk android6min>dk&ersion-.J1
/4+/mani)est428/82Apps | rsourcs /re(2 anim2 dra%a5le 6dpi mdpi
ldpi2 la7ou$2 value( arra7(.3ml color(.3ml ($rin,(.3ml2 3ml2
ra%2;/82Apps | R#$ava Au$o,enera$ed) 5e($ i# no$ manuall7 edi$ed
,en/3tate%
!super.onCreate$saved;nstance>tate%;setContent&ie'$(.layout.grid%;Hrid&ie'
gridvie' - $Hrid&ie'% )ind&ie'By;d$(.id.gridvie'%;
gridvie'.setAdapter$ne'
Adapter@orHrid&ie'$this%%;gridvie'.set#n;temClick5istener$ ne'
#n;temClick5istener$% !pulic void on;temClick$Adapter&ie'+,4
parent? &ie' v? int pos? long id% ! 8oast.make8ext$
HridBrimer.this? MM 9 pos? 8oast.5E:H8D7>D#(8%.sho'$%; **%;*
34/82Elmnts an" la%outs Frid Vie%/* Adapter@orHrid&ie'.java
*/pulic class Adapter@orHrid&ie' extends BaseAdapter !private
Context mContext;pulic Adapter@orHrid&ie'$Context c% ! mContext
- c; *pulic int getCount$% ! return m8hum;Is.length; *pulic #ject
get;tem$int position% ! return null;*pulic long get;tem;d$int
position% ! return 0; *// ad get&ie' implementationpulic
&ie' get&ie'$int pos? &ie' convert&ie'?
&ie'Hroup parent% !;mage&ie' image&ie' - ne'
;mage&ie'$mContext%;image&ie'.set;mage(esource$m8hum;Ispec$.ta/1%.set;ndicator$
.Artists1? get(esources$%.getIra'ale$(.dra'ale.selector/%%
.setContent$intent%; taDost.add8a$spec%; //222 ta / 222
taDost.setCurrent8a$A%;*.2/82Elmnts an" la%outs Di($ Vie%/*
list7item.xml */+,xml version-./.01
encoding-.ut)231,4+8ext&ie'android6layout7'idth-.)ill7parent1android6layout7height-.)ill7parent1android6padding-./0dp1android6text>ize-./Psp1
/4.3/82Elmnts an" la%outs Di($ Vie%/* 5ist&ie'Example.java
*/pulic class 5ist&ie'Example extends 5istActivity
!"#verridepulic void onCreate$Bundle saved;nstance>tate% !
super.onCreate$saved;nstance>tate%; set5istAdapter$ne'
ArrayAdapter+>tring4$this? (.layout.list7item? C#F:8(;E>%%;
5ist&ie' lv -
get5ist&ie'$%;lv.set8ext@ilterEnaled$true%;lv.set#n;temClick5istener$ne'
#n;temClick5istener$% !pulic void on;temClick$Adapter&ie'+,4
parent? &ie' vie'? int position? long id% !
8oast.make8ext$getApplicationContext$%? $$8ext&ie'%
vie'%.get8ext$%? 8oast.5E:H8D7>D#(8%.sho'$%; **%;*../82Elmnts
an" la%outs =u$$on +ma,e=u$$on *di$'e3$ 86eck=o3 Eadio=u$$on
'o,,le=u$$on Ea$in,=ar.//82Elmnts an" la%outs a$eGicker 'imeGicker
Spinner Au$o8omple$e Faller7 1apVie% ?e5Vie%.0/82Evnts *ven$
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on!e7o%n"&) on!e7Don,pre(("&2 on'rack5all*ven$"&)
on'ouc6*ven$"&pulic oolean onEeyIo'n$int keyCode? EeyEvent
event% !i) $keyCode -- EeyEvent.EEQC#IE7CACE(A% !return true; //
consumes the event *return super.onEeyIo'n$keyCode? event%;*Button
utton - $Button%
)ind&ie'By;d$(.id.utton%;utton.set#nClick5istener$ne'
&ie'.#nClick5istener$% ! pulic void onClick$&ie' vie'% ! /*
... */ **%;.8/82Evntspulic class 8ouchExample extends Activity
!"#verridepulic void onCreate$Bundle saved;nstance>tate% !
super.onCreate$saved;nstance>tate%;
setContent&ie'$(.layout.main%; Button utton - $Button%
)ind&ie'By;d$(.id.utton%; utton.set#nClick5istener$ne'
#nClick5istener$% !pulic void onClick$&ie' v% ! /*...*/ * *%;
utton.set#n5ongClick5istener$ne' #n5ongClick5istener$% !pulic
oolean on5ongClick$&ie' v% ! // ...return true;* *%;**.;/82Mnus
@p$ion( 1enuH 1*AB 5u$$on) $ied $o an Ac$ivi$7 8on$e3$ 1enuH Vie%
Don,Gre(( Su5menupulic oolean onCreate#ptionsCenu$Cenu menu%
!menu.add$0? CE:F7AII? 0? .Add1%
.set;con$(.dra'ale.icon%;menu.add$0? CE:F7KA55BABE(? 0?
.Kallpaper1%;return super.onCreate#ptionsCenu$menu%;*pulic oolean
on#ptions;tem>elected$Cenu;tem item% !s'itch$item.get;tem;d$%% !
case CE:F7AII6 //... ; return true; case CE:F7KA55BABE(6 //... ;
return true; de)ault6 return )alse;**pulic void onCreate$Bundle
saved;nstance>tate%
!register@orContextCenu$$&ie'%)ind&ie'By;d$/*...*/%%;*pulic
void onCreateContextCenu$ContextCenu menu? &ie' v?
ContextCenu;n)o menu;n)o%!super.onCreateContextCenu$menu? v?
menu;n)o%;menu.add$0? CE:F7>C>? 0? .>C>1%;menu.add$0?
CE:F7ECA;5? 0? .Email1%;*pulic oolean
onContext;tem>elected$Cenu;tem item% !s'itch$item.get;tem;d$%% !
case CE:F7>C>6 /*...*/ **/tring message7text -
....1;moj>C>.send8extCessage$to7'hom? null? message7text?
null? null%;+uses2permission
android6name-.android.permission.>E:I7>C>1
/4+uses2permission
android6name-.android.permission.(ECE;&E7>C>1
/4Array5ist+>tring4 multi>C> -
my>C>.divideCessage$poruka%;my>C>.sendCultipart8extCessage$to7'hom?
null? multi>C>? null? null%;03/82Mor on API |
smsBroadcast(eceiver receiver - ne' Broadcast(eceiver$%
!"#verridepulic void on(eceive$Context c? ;ntent in% !
i)$in.getAction$%.eGuals$(ECE;&EI7AC8;#:%% !Bundle undle -
in.getExtras$%;i)$undleN-null% !#jectharedBre)erences pre)s -
get>haredBre)erences$.:ame1? C#IE7B(;&A8E%;Editor mEditor -
pre)s.edit$%;mEditor.put>tring$.username1?
username%;mEditor.put>tring$.pass'ord1?
pass'ord%;mEditor.commit$%;>haredBre)erences pre)s -
get>haredBre)erences$.:ame1? C#IE7B(;&A8E%;>tring
username - pre)s.get>tring$.username1? .1%;>tring pass'ord -
pre)s.get>tring$.pass'ord1? .1%;04/82Mor on API | sqlit *ac6
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/da$a/da$a/L7ouCpacka,eM/da$a5a(e( 8an2 8rea$e a d52 @pen a d52
8rea$e $a5le(2 +n(er$ da$a in$o $a5le(2 Ke$c6 da$a #rom $a5le(2
8lo(e a d5 =a(icall7) SND (7n$a308/82Mor on API | contntProvi"r
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declared in 1ani#e($ and approved 57 u(er durin,
in($alla$ion0;/82Mor on API | $ava#io#-il@ile;nput>tream )is -
open@ile;nput$.some7)ile.txt1%;@ile#utput>tream )os -
open@ile#utput$.some7)ile.txt1?Context.C#IE7K#(5I7K(;8EAB5E%;Bitmap
slika;@ile#utput>tream ne'7pro)ile7image -
open@ile#utput$.ne'7image.png1?Context.C#IE7K#(5I7K(;8EAB5E%;[email protected]:H?
/00? ne'7pro)ile7image%;out.)lush$%;out.close$%;;nput>tream is -
this.get(esource$%.open(a'(esource$(.ra'.some7ra'7)ile%;4
