android skripta 1-10

8/10/2019 Android Skripta 1-10

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UNIVERZITET U BEOGRADU

FAKULTET ORGANIZACIONIH NAUKA

LABORATORIJA ZA ELEKTRONSKO POSLOVANJE

RAZVOJ APLIKACIJA ZAOPERATIVNI SISTEM ANDROID

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0og+a .e/0ea.o da 19.k-o.e% Takoe de.e ko'e *r)+eg'e 0ora'9 dr9ge a*+ka-'e da *o/ed9'9 da !

0og+e da kor/e ko0*o.e.e a*+ka-'e% De.e 0.0a+.9 )er('9 A.drod APIa ko' (ae)a a*+ka-'a% De.e +/9 !!+oeka ko'e a*+ka-'a kor/

I(9(e.o 'e !.o *ra)+.o ko.g9r/a 0a.1e/ 1a'+, (ao o 9 *ro).o0a*+ka-'a .ee do!ro 19.k-o./a% U *r0er9 "%$ *rka(a. 'e (g+ed 'ed.og0a.1e/ 1a'+a%

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*r odree.0 oko+.o/0a% O)0 /ek9.dar.0 9+a(.0 aka0a /e 9*ra)+'a*o0o9 A.drod 0a.1e/ 1a'+a odree.0 +er0a%

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A.drod a*+ka-'e /9 odgo)or.e (a 9*ra)+'a.'e .'o)0 /a.'e0, kao .'o)o00e0or'o0, re/9r/0a *oda-0a% A.drod o*era). //e0 0o&e /k+'9ak).o/ ko'a 'e .a *a9(, /o*ra.a + 9.e.a kada 'e 0e0or'a /+a!a% O)o(.a da /)aka ak).o/ ko'a .'e 9 *r)o0 *+a.9 0ora ! /k+'9e.a% Dr9g0re0a, A.drod a*+ka-'a 0ora odr&a)a /a.'e ! /*re0.a da !9de *rek.9a+ ak /k+'9e.a 9 /)ako0 re.9k9%

0.1.Mivotni %iklus aktivnosti

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Slika 0." K Mivotni %iklus aktivnosti

U a!e+ ?%$ *rka(a.e /9 19.da0e.a+.e 0eode (a 9*ra)+'a.'e &)o.og -k+9/a .'o) o*/%

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9verride

protected void on(esume45 8

super.on(esume45;

// A#tivnost je postala vidljiva 4sada je u stanju "resumed"5.

9verride

protected void on6ause45 8

super.on6ause45;

// +ruga a#tivnost u>ima fo#us 4ova a#tivnost je sada "paused"5.

9verride

protected void ontop45 8

super.ontop45;

// A#tivnost vie nije vidljiva 4sada je u stanju "stopped"5.

9verride

protected void on+estro$45 8

super.on+estro$45; // A#tivnost se unitava.

Jrimer 0." K Jrimer aktivnosti sa metodama ivotno' %iklusa

0.".Freiran&e aktivnosti

Da ! /e krera+a .o)a ak).o/ 9 ok)r9 A.drod a*+ka-'e, krera /e .o)a k+a/ako'a .a/+e9'e k+a/9 A-)@ 7+ .'e.9 ()ede.9 k+a/9;% U .o)okrera.o' k+a/,.eo*od.o 'e 0*+e0e.ra 0eode o*/a.e 9 *reod.o0 *og+a)+'9 7vidiPri-er


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Slika 0.": K +)bor op%i&e )a dodavan&e novo' fa&la

Poo0 'e *ore!.o (a!ra o*-'9 (a doda)a.'e .o)e k+a/e% To 'e o*-'a Ja)a YC+a// 7S+ka =%"5;% Za0 re!a k+k.9 .a a/er Ne%

Slika 0."= K +)bor op%i&e )a kreiran&e nove klase

Sada e /e *o'a) ekra. *rka(a. .a /+- ?%6% O)de 'e .eo*od.o 9.eodgo)ara'9a *odea)a.'a, a o /9

Sour%e folder 1o+der 9 ko0e /e 9)a'9 ()or. 1a'+o) *ro'eka% O!.o 'eo src%

Ja%ka'e .a() *akea 9 ko0e /e krera k+a/a% O)de ! re!a+o da /o'.a() *akea ko' 'e krera. (a'ed.o /a .o)0 A.drod *ro'eko0% U o)o0/+9a'9, o 'e net.-yelab.android.-o4aaplikaci4a%

6ame .a() k+a/e% O)de 9.o/0o &e+'e. .a() ak).o/ ko'9 krera0o%U .ae0 /+9a'9, .eka a' .a() !9deAktivnost%

@odi*ers 0odkaor *r/9*a% Za ak).o/, o)a )red.o/ ! re!a+o da

!9depublic%

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Super%lass .adree.a k+a/a% Za ak).o/, o ! re!a+o da !9deandroid.app.Activity%

Slika 0."> K Jodeavan&a nove klase

Nako. 9.e )red.o/, *ore!.o 'e k+k.9 .a a/er $inish% Sada 'e *ore!.o0*+e0e.ra .eke od ra.'e *o0e.9 0eode% Ak).o/ ko'9 /0o krera+*red/a)+'ae &ello 0orld *r0er%

Na'*re e0o 0*+e0e.ra 0eod9 on-reate45

9verride

public void on-reate4:undle saved%nstancetate5 8

super.on-reate4saved%nstancetate5;

*extie@ tv = ne@ *extie@4t7is5;

tv.set*ext4"ello @orld"5;

set-ontentie@4tv5;

Jrimer 0.0 K +mplementa%i&a metode onreate($

Jed. 9+a(. *ara0ear o)e 0eode 'e o!'eka *a :undleko' *red/a)+'a .eko*reod.o /a.'e ak).o/ 9ko+ko 'e ak).o/ !+a ra.'e *okre.9a% Na *oek9/e *o()a 0eoda on-reate45 .adree.e k+a/e 7k+a/a Activit$;, ko'o' /e*ro/+e9'e *ara0ear *a :undle% Za0 /e krera .o) *og+ed 7ie@;% Pog+ed 9/)ar *red/a)+'a o/.o).9 'ed.-9 kor/.kog .er1e'/a A.drod a*+ka-'e%A.drod ak).o/ 0o&e da kor/ )e ra(+ *og+eda, a o .'0a e ! re 9.ared.o0 *og+a)+'9% Tek/9a+. /adr&a' /e 9!a-9'e kore.'e0 0eodeset*ext45%

Ko.aa. (g+ed k+a/e A#tivnost*rka(a. 'e 9 .ared.o0 *r0er9

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pac#age net.m$elab.android.mojaapli#acija;

import android.app.Activit$;

import android.os.:undle;

import android.@idget.*extie@;

public class A#tivnost extends Activit$ 8

9verride



*extie@ tv = ne@ *extie@4t7is5;

tv.set*ext4"ello @orld"5;

set-ontentie@4tv5;

Jrimer 0.4 K Flasa Aktivnost

Da ! a*+ka-'a !+a 19.k-o.a+.a, .eo*od.o 'e 9!a- *odake o krera.o'ak).o/ 9 A.drod 0a.1e/ 1a'+% Nako. (0e.a, 1a'+ AndroidManifest.xml re!ada (g+eda o)ako


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Saro)a.'e )r9e+.og 9rea'a *red/a)+'a d9g *ro-e/ ko' 0o&e *ora'a )e od6 0.9a%

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*o0o9 o*-'e Run (1 )un Con>gurations, a (a0 'e *ore!.o (a!ra o*-'9Android Application (1 "a#iv Pro4ekta, *a kar-9 /arget7S+ka =%=#;%

Slika 0.0# K +)bor Android virtuelno' ureLa&a

Uko+ko 'e (k A.drod 9rea' *o)e(a. /a ra9.aro0 kore.'e0 USB *ora,(!oro0 o*-'e )un .ee do do /aro)a.'a )r9e+.og 9rea'a, )e e /ea*+ka-'a ./a+ra .a (k 9rea' *oo0 a9o0a/k /aro)a .a .'e09%

U/*e.o /aro)a.a a*+ka-'a .a )r9e+.o0 9rea'9 *rka(a.a 'e .a /+edeo'/+-

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Slika 0.01 K Aplika%i&a na virtuelnom ureLa&u

6"


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4. Desursi u Android aplika%i&ama

S)e a.drod a*+ka-'e /a/o'e /e ( d)a /eg0e.a

19.k-o.a+.o/ *red/a)+'a kod kako /e a*+ka-'a *o.aa .a .ek(ae)% O)de /*ada'9 /) a+gor0 ko' *okre9 a*+ka-'9

re/9r/ + *oda- o!9)aa'9 ek/o)e, /+ke, a9do )deo 1a'+o)e,daoeke, ko.e dr9ge *odake ko'e kor/ a*+ka-'a%

Re/9r/ o!9)aa'9 ek/ 9 o!+k9 /r.ga, /+ke ko.e, a9do daoeke,)deo (a*/e dr9ge *odake ko'e kor/ a*+ka-'a%

Re/9r/ /e de+e .a d)a *a re/9r/e a*+ka-'e re/9r/e //e0a% Re/9r/ea*+ka-'e de.e de)e+o*er 9.9ar 1a'+o)a A.drod *ro'eka a.o /9odree. (a .ek9 a*+ka-'9% Re/9r/ //e0a /9 /a.dard. re/9r/ ko'ede.e A.drod *+a1or0a do/9*. /9 /)0 a*+ka-'a0a kro( A.drodSDK%

Re/9r/ a*+ka-'e /e *ra)e 9)a'9 9.9ar A.drod *ro'eka 9 4re/drekor'909% Kor/e )e de./a.9 a+ ek/!+.9 /r9k9r9drekor'90a, re/9r/ /9 orga.(o)a., de./a. 9*ako)a. /a *akeo0a*+ka-'e% Re/9r/ a*+ka-'e /e .e de+e /a o/ako0 A.rod //e0a%

S) re/9r/ a*+ka-'e /e 9)a'9 9 /r9k9r drekor'90a 4re/ /a/a)+'e. /99 *ro'eka 9 re.9k9 *ra)+'e.'a a*+ka-'e% Re/9r/ a*+ka-'e /e 0og9kor/ *rogra0er/k% Takoe .a .' /e 0og9 od.o/ re/9r/ dr9gre/9r/a a*+ka-'a%

S)ak *9 kad /e /a9)a 1a'+ /a re/9r/0a 9 E-+*/9, R%'a)a k+a/a 1a'+ /e*o.o)o /a/a)+'a kako ! /e 9!a-+e .o)e (0e.e% Ako .'e kore. *ra)

drekor'90 + *ra)+a o .a()9 1a'+a, *o'a)e /e greka 9 ko0*a'+er9 9*ro(or9 E-+*/e Pro!+e0/%

Re/9r/0a a*+ka-'e /e 0o&e *r/9* *rogra0er/k kor/e ge.er/9k+a/9 ko'a /e (o)e R%'a)a% Kako ! /e doda+a re1ere.-a .a re/9r/, 0ora /edo do o!'eka re/9r/a a*+ka-'e kor/e k+a/9 geRe/o9r-e/7; ako.a*ra) odgo)ara'9 *o() .a ko0a.d9, ko' 'e (a/.o)a. .a *9 re/9r/ako' &e+ da /e doda%

De)e+o*er 0og9 da *r/9*e re/9r/0a A.drod //e0a 7kao dodaak

re/9r/0a a*+ka-'e;% Mog9 /e de+ 0.og re/9r/ //e0a kro( )ea*+ka-'a (!og o!.og (g+eda o/ea'a%Na *r0er, k+a/a re/9r/a A.drod

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//e0a 7a.drod%R%/r.g; /adr& /r.go)e (a re kao o /9 OK, Ca.-e+,e/, No, C9, Co*@ Pa/e%

S/e0/k re/9r/ /e 9)a'9 9 a.drod *ake9% Po/o'e k+a/e (a /)ak od)e *o)a re/9r/a% Na *r0er, k+a/a a.drod%R%/r.g /adr& /r.g//e0/kog re/9r/a% Kako ! /e do!o /r.g //e0/kog re/9r/a (a OK *r)o/e 0ora kor/ /aka ko0a.da k+a/e Re/9r/a geS@/e07; kako ! /edo)eo g+o!a+. //e0/k o!'eka Re/o9r-e% O.da /e *o()a ko0a.dageSr.g7; /a odgo)ara'90 /r.g 0e.o0 re/9r/a%

4.1.pravl&an&e i pristup resursima

U o)o0 *og+a)+'9 !e *rka(a.o kako A.drod a*+ka-'e /k+ade *r/9*a'9 )a&.0 re/9r/0a kao o /9 /r.go), graka o/a+ *oda-%

Takoe e ! *rka(a.o kako da orga.(9'ee A.drod re/9r/e 9 ok)r9*ro'eka kako ! /e .a .a'+ak .a. 0og+a ()r +oka+(a-'a *r+agoa)a.'e a*+ka-'a (a ra(+e ko.g9ra-o.e 9rea'e% Kako ! /eo0og9+a ko0*aa!+.o/ /a ra(+0 9rea'0a *ore!.o 'e re/9r/eorga.(o)a 9 1o+der0a7drekor'900a; *od1o+der0a kako ! /e /)akdeo a.drod a*+ka-'e 0ogao odr&a)a .e(a)/.o od o/a+ de+o)aa*+ka-'e%

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*okre.e .a .ek 9rea' ko' 0a dr9ga'9 re(o+9-'9 ekra.a, .*r kor/La.d/-a*e or'e.a-'9, da ada *o()a 19.k-'e (a *rka( / 1o+derares/layout-land/ gde e .a o)a' .a. /a0a a*+ka-'a (a)/.o odre(o+9-'e 9rea'a *rka(a adek)aa. /adr&a'%

S+ka =%$% Ra(+ *rka( (a ra+9 re(o+9-'9 9rea'a

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0o&ee kor/ (a /)e )ae a*+ka-'e%

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- Kod 'e 'a/.' +ak (a a.'e, o do)od do 0a.'e greaka%- Re/9r/ /9 orga.(o)a. *o *o)0a /g9r.o /9 'ed./)e.- Re/9r/ /9 do!ro /0ee. (a *r+agoa)a.'e e+e1o.0a

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4.".Tipovi resursa

A.drod a*+ka-'e kor/e )e+k !ro' ra(+ *o)a re/9r/a kao o 'eek/, graka, e0e 9 !o' (a d(a'. kor/.kog .er1e'/a d% O) re/9r/ /e

.a+a(e 9 re/4 drekor'909 )ae a.drod a*+ka-'e%

Fa'+o) re/9r/a /a9)a. 9 4re/ drekor'909 0ora'9 da *o9'9 /+edea*ra)+a

- I0e.a 1a'+o)a re/9r/a 0ora'9 ! .a*/a. 0a+0 /+o)0a- I0e.a 1a'+o)a re/9r/a 0og9 /adr&a /a0o /+o)a, !ro'e)e, do.'9 -r9,

ake- I0e.a 1a'+o)a re/9r/a 7 ML ar!9 0e.a; 0ora'9 ! 'ed./)e.%

U .ared.o' a!e+ *rka(a.o 'e kako /e 9)a'9 re/9r/ ko'e *odr&a)aA.dord SDK%

T* re/9r/a Pore!a.drekor'90

Na() ML ag

Strin's 4re/4)a+9e/4 /r.g/%0+ X/r.gY6i) strin'ova 4re/4)a+9e/4 /r.g/%0+ X/r.garra@Y,

Xe0YCoolenas 4re/4)a+9e/4 !oo+/%0+ X!oo+Yolors 4re/4)a+9e/4 Co+or/%0+ X-o+orY3imensions 4re/4)a+9e/4 D0e./%0+ Xd0e.Y+nte'ers 4re/4)a+9e/4 .eger/%0+ X.egerY@eovit ni) 4re/4)a+9e/4 Arra@/%0+ Xarra@Y,

Xe0Y!ednostavnielementi(3raBables$

4re/4)a+9e/4 draa!+e/%0+ Xdraa!+eY

Graphi%s(slike$

4re/4draa!+e4 I-o.%*.g,+ogo,'*g d

@eni 4re/40e.94 Pr0er0a.0e.9%0+

e+*0e.9%0+

X0e.9Y

@E fa&lovi 4re/40+4+)'led(Ea9outs$

4re/4+a@o94 0a.%0+

Stilovi i teme 4re/4)a+9e/4 /@+e/%0+e0e/%0+

X/@+eY

Anima%i&a 4re/4draa!+e4 Pr0er%/ek)e.-a$%0+/ek)e.-a"%0+

Xa.0ao.+/Y, Xe0Y

Ta!e+a =%$% Kako orga.(o)a re/9r/e 9 A.drod *ro'ek9

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4.0.Dad sa resursima

U o)o0 de+9 !e *rka(a.o kako 0o&ee 9*ra)+'a re/9r/0a 9 )ao'A.dord a*+ka-', ko' 1or0a /9 *odr&a. 9 ko0 1or0a9 /e 9)a'9% Neke

)r/e re/9r/a kao o /9 ek/, !o'a d% /9 )eo0a do!ro *odr&a.e od/ra.e E-+*/e edora A.dord P+9g. Re/o9r-e Edor, dok dr9g kao o/9 a.0ra.e /ek)e.-e, ./9 /a .'0a 'e +ake rad drek.o edo)a.'e09 ML daoeka0a%

4.0.1.Dad sa strin'ovima

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4.0.".Dad sa ni)om strin'ova

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4.0.4.Dad sa bo&ama

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4.0.-.Dad sa resursima ko&i se %rta&u

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4.0.:.Dad sa fa&lovima

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4.0.>.Dad sa stilovima

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4.4.Deferen%iran&e sistemskih resursa

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Slika -.0" K ?i&erarhi&ski prika) elemenata korisniko' interfe&sa

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/-ra)a.'e *od)ora .'ego)o' +oka-' .a ekra.9% S)aka gr9*a *og+eda 'eodgo)or.a (a re.dero)a.'e *rka(a /)o' *od)oro)a%

-.1.@E la9out

Naa *r)a A.drod a*+ka-'a 7Pr0er =%?; kor/+a 'e .a''ed.o/a).' *og+ed*extie@ko' /+9& (a *rka( ek/a !+a 'e d(a'.ra.a *ro-ed9ra+.o, o (.a da.'e kore. ML *r+ko0 d(a'.ra.'a kor/.kog .er1e'/a% S o!(ro0 da 'e*o&e+'.o kor/ dek+ara)a. d(a'. *r+ko0 krera.'a /+o&e.'eg kor/.kog.er1e'/a, 9 da+'e0 ek/9 !e o*/a. *o/9*ak krera.'a He++o or+da*+ka-'ekore.'e0 ML e.o+og'e (a d(a'. kor/.kog .er1e'/a% Jed.a od.a')e *red.o/ dek+ara).og d(a'.a 'e/e *o*9.a od)o'e.o/ d(a'.akor/.kog .er1e'/a od a*+ka-o.e +ogke% To (.a da 0a+e *ro0e.e 9 kod9.ee 9-a .a d(a'. a*+ka-'e o!r.9o% Dek+ar/a.'e TeVe *og+eda *o0o9MLa o!a)+'a /e .a /+ede .a.


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androidBla$out,@idt7O)a' ar!9 odre9'e ko+ko e o)a' *og+ed da (a9(0e r.e ekra.a% U o)o0 /+9a'9,o)o 'e 'ed. *og+ed ko' /e kor/, e 'e 0og9e (a9(e a) ekra., o o(.aa)a)red.o/ ar!9a 8>llparent8%

androidBla$out,7eig7tO)a' ar!9 /e *o.aa /+.o ar!99android2layoutwidth% Ra(+ka 'e 9 o0e o /ear!9 android2layoutheightod.o/ .a do/9*.9 )/.9 ekra.a%

androidBtext

O)de /e 9!a-9'e &e+'e. ek/ ko' *extie@re!a da *rka&e% U o)o0 *r0er9, kor//e re/9r/ *a /r.g 790e/o drek.o 9.ee )red.o/ /r.ga;% O)a' /r.g 'e

de./a. 9 1a'+9 resBvaluesBstrings.x-l% Pr+ko0 9!a-)a.'a /r.go)a 9 a*+ka-'9*re*or99'e /e kore.'e re/9r/a, a .e drek. 9.o/ )red.o/ /r.go)a% O)o 'edo!ra *rak/a (ao o o0og9a)a +oka+(a-'9 a*+ka-'e, od.o/.o 0og9.o/)e'e(.o/, !e( 0e.a koda +a@o9 1a'+a%

Tabela -.0 K naen&e atributa elementa Te7tHieB

ML +a@o9 1a'+o) .a+a(e /e 9 1o+der9 /res/la$out/9 ok)r9 *ro'eka%

Dodaak (a E-+*/e a9o0a/k krera *odra(90e)a. +a@o9 1a'+, main.xml% U*r0er9 6%$ o)a' 1a'+ 'e g.or/a., a /a0 +a@o9 'e krera. drek.o 9 kod9% Da !/e kor/o ML +a@o9, .eo*od.o 'e .a. odgo)ara'9e (0e.e%

Na'*re 'e *ore!.o o)or 1a'+ /res/la$out/main.xml , 9 .'ega 9!a- kod *rka(a.

9 *r0er9 6%$ /a9)a (0e.e%

Za0 re!a o)or 1a'+ 4re/4)a+9e/4/r.g/%0+% O)de /e .a+a(e )red.o//r.go)a ko' /e kor/e 9 a*+ka-'% Pore!.o 'e 9!a- /+ede kod


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androidBla$out,@idt7="fill,parent"

androidBla$out,7eig7t="fill,parent"

androidBla$out,@eig7t="1"


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androidBla$out,7eig7t="@rap,content"

androidBla$out,@eig7t="1"/

e="1Fpt"


androidBla$out,7eig7t="@rap,content"

androidBla$out,@eig7t="1"/


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-.".".DelativeEa9out

(elative2a$out*red/a)+'a gr9*9 *og+eda ko'a *rka(9'e )e Ve e+e0a.aakore.'e0 re+a). *o(-'a% Po(-'e /9 re+a).e 9 od.o/9 .a e+e0e. /og.)oa 'erar'e + 9 od.o/9 .a -e+o *odr9'e (elative2a$outa%

Slika -.04 K DelativeEa9out

Sadr&a' 1a'+a res/la$out/main.xml


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androidBtext="" /


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-.".0.TableEa9out

*able2a$out'e gr9*a *og+eda ko'a *rka(9'e /)o'eVe e+e0e.e 9 redo)0a ko+o.a0a%

Slika -.0- K TableEa9out



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e+e0e. *able([email protected]+oga. 'e e+e0e.9


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-.".4.GridHieB

Lridie@*red/a)+'a gr9*9 *og+eda ko'a *rka(9'e e+e0e.e 9 d)od0e.(o.a+.o'0re& /a 0og9.o9 /kro+o)a.'a% E+e0e. /e 9!a-9'9 *o0o9 2istAdaptera% Uo)o0 *r0er9 !e *rka(a.o krera.'e 0re&e /a 0a+0 /+ka0a 790!.a+/;%Kada /e (a!ere .eka od .', oa/ *or9ka e *rka(a *o(-'9 /+ke%

Slika -.0 K GridHieB



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Lridie@ gridvie@ = 4Lridie@5 findie@:$%d4(.id.gridvie@5;

[email protected]@ %mageAdapter4t7is55;

[email protected]%tem-lic#2istener4ne@ n%tem-lic#2istener45 8

public void on%tem-lic#4Adapterie@


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if 4convertie@ == null5 8 // if itNs not rec$cled initiali>e

some attributes

imageie@ = ne@ %mageie@4m-ontext5;

[email protected]$out6arams4ne@ [email protected]$out6arams4!F !F55;

[email protected]*$pe4%[email protected]*$pe.-&)*&(,-(65;

[email protected]! ! ! !5;

else 8

imageie@ = 4%mageie@5 convertie@;

[email protected]%mage(esource4m*7umb%dsOpositionP5;

return imageie@;

// references to our images

private %ntegerOP m*7umb%ds = 8

([email protected],H ([email protected],G

([email protected],Q ([email protected],F ([email protected],R ([email protected],S

([email protected],0 ([email protected],1


([email protected],Q ([email protected],F

([email protected],R ([email protected],S

([email protected],0 ([email protected],1


([email protected],Q ([email protected],F

([email protected],R ([email protected],S

;

Jrimer -.1: K Flasa +ma'eAdapter

Na'*re /e 0*+e0e.ra'9 0eode rode+'/ke k+a/e :aseAdapter% Meodaget-ount45)raa 9k9*a. !ro' e+e0e.aa o)og ada*era% Meoda get%tem45)raae+e0e. ko' /e .a+a( .a *ro/+ee.o' *o(-'% Meoda geIe0Id7; )raa d redae+e0e.a% U o)o0 *r0er9 /e o)e 0eode .e kor/e 7)raa'9 re/*ek).o .9++ #;%

Meoda getie@45 krera .o) *og+ed (a /)ak9 /+k9 ( %mageAdaptera% N'o' /e*ro/+e9'e *og+ed (a ko' /e *ro)era)a da + 'e .9++% Uko+ko 'e/e, %mageie@ 'e./a.-ra. ko.g9r/a.% Uko+ko o)a )red.o/ .'e .9++, o (.a da 'e %mageie@ra.'e ./a.-ra. 9 o0 /+9a'9 /e kor/ a' o!'eka%

Meode set2a$out6arams45, setcale*$pe45 set6adding45 re/*ek).o*odea)a'9 d0e.('e *og+eda, * /ka+ra.'a ra(0ak (0e9 e+e0e.aa%

Na kra'9 ! re!a+o .a*o0e.9 da 'e .eo*od.o 9!a- &e+'e.e /+ke 9 1o+derres/dra@able/%

5$


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-.".-.TabEa9out

Kore.'e kar-a 7a!o)a; *r+ko0 (rade kor/.kog .er1e'/a )eo0a 'e*o*9+ar.o% A.drod *+a1or0a o0og9a)a d)a ra(+a *r/9*a *r+ko0 (radeo)ak)og kor/.kog .er1e'/a% Pr) *r/9* 'e/e 'ed.o/a).a *ro0e.a *og+eda 9ok)r9 /e ak).o/ *r+ko0 (!ora &e+'e.e kar-e, a dr9g *r/9* 'e *ro0e.aa)e ak).o/ *r+ko0 (!ora kar-e% U !+o ko0 /+9a'9, .eo*od.o 'ekore.'e k+a/a *abost*abidget% *abost*red/a)+'a kore. )or +a@o9a% Uok)r9 .'ega .a+a(e /e e+e0e. *abidget (a *rka( do/9*. kar-a 3rame2a$out(a *rka( /adr&a'a (a!ra.e kar-e%

Slika -.0: K TabEa9out

U o)o0 *r0er9, /)ako' kar- !e dode+'e.a ra(+a ak).o/%

Na'*re 'e .eo*od.o krera r ra(+e ak).o/% To /9 ArtistsActivit$,AlbumsActivit$ongsActivit$% S)aka od .' e ! *rka(a.a 9 *o/e!.o' kar-%

Za *oeak, /)aka ak).o/ e *rka()a odree.9 *or9k9% Na *r0er

public class ArtistsActivit$ extends Activit$ 8



*extie@ textvie@ = ne@ *extie@4t7is5;

[email protected]*ext4"*7is is t7e Artists tab"5;

set-ontentie@4textvie@5;

Jrimer -.1= K DelativeEa9out aktivnost

5"


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Preod. kod od.o/o /e .a ak).o/ ArtistsActivit$% Za ak).o/AlbumsActivit$ ongsActivit$kor/ /e / kod, 9( (0e.9 *or9ke ko'a e /e*rka(a% Tre!a 9o da ak).o/ .e kor/e ML +a@o9, )e *o0o9 koda*o()a'9 *extie@% Nara).o, o)e ak).o/ 'e .eo*od.o 9!a- 9 A.drod0a.1e/ 1a'+%Za /)ak9 kar-9 *ore!.o 'e *r*re0 d)e ko.e% Jed.a /e *rka(9'e

9 /+9a'9 kada 'e kar-a (a!ra.a, a dr9ga kada kar-a .'e (a!ra.a%

Slika -.0= K Jrimer i)'leda ikona )a karti%e

U o)o0 *r0er9, /a ko.a e /e kor/ (a /)ak9 kar-9% S+ke ko.a ! re!a+o9!a- 9 1o+der res/dra@able/% U /o0 1o+der9 re!a krera .o) ML 1a'+ .a()a ga

ic,tab,artists.xml% Kod ko' re!a 9!a- 9 1a'+ 'e /+ede


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Jrimer -."# K Sadra& fa&la res,la9out,main.7ml

O)a' +a@o9 e *rka(a kar-e o0og9 .a)ga-'9 (0e9 /) ra.'e krera.ak).o/% E+e0e. *abost (ae)a e+e0e.e *abidget 3rame2a$out 9.9ar/e!e% U (a)/.o/ od &e+'e.og ra/*oreda o) e+e0e.aa, 0og9 /e kor/

ra(+ +a@o9 (a .'o)o *o(-o.ra.'e% Na *r0er, (a .'o)o )erka+.o*o(-o.ra.'e 0o&e /e kor/ 2inear2a$out% E+e0e. 3rame2a$out re.9.o 'e*ra(a. (ao o /e /adr&a' re.9.e kar-e 9(0a ( ek9e ak).o/ ko'a /eod.o/ .a 9 kar-9% Tre!a *r0e e+e0e. *abidget 3rame2a$out0a'9 /)o'ede.kaore% To /9 tabs tabcontent, re/*ek).o% O)a 0e.a 0ora'9 da /ekor/e kada .eko re1ere.-ra o)e e+e0e.e%

Sada re!a .a*ra) 'o 'ed.9 ak).o/% Mo&e /e (a!ra .'e. *ro()o+'a. .a(),a+ 'e )a&.o da /e 9 Ma.1e/ 1a'+9 de.e da 'e 9 *a.'9 *oe.a ak).o/% O)aak).o/ e /e ra(+ko)a od o/a+, ra.'e /*o0.'a. ak).o/, (ao o o.a.a/+e9'e k+a/9 *abActivit$% U .a/a)k9 'e da /krae. kod *oe.e ak).o/

7.'e *rka(a. *ake ko'e0 k+a/a *r*ada, kao . 9)e(e.e k+a/e;

public class ello*abidget extends *abActivit$ 8



set-ontentie@4(.la$out.main5;

(esources res = get(esources45; // '>imaju se resursi

*abost tabost = get*abost45; // A#tivnost *abost

*abost.*abpec spec; // *abpec >a sva#u #articu

%ntent intent; // %ntent >a sva#u #articu

// %nstanciranje %ntenta intent = ne@ %ntent45.set-lass4t7is ArtistsActivit$.class5;

// %nstanciranje *abpeca >a sva#u #articu i dodavanje *abostu

spec = tabost.ne@*abpec4"artists"5.set%ndicator4"Artists"

res.get+ra@able4([email protected],tab,artists55

.set-ontent4intent5;

tabost.add*ab4spec5;

// ledi isti postupa# >a ostale #artice

intent = ne@ %ntent45.set-lass4t7is AlbumsActivit$.class5;

spec = tabost.ne@*abpec4"albums"5.set%ndicator4"Albums"

res.get+ra@able4([email protected],tab,albums55



intent = ne@ %ntent45.set-lass4t7is ongsActivit$.class5;

spec = tabost.ne@*abpec4"songs"5.set%ndicator4"ongs"

res.get+ra@able4([email protected],tab,songs55



tabost.set-urrent*ab4H5;

Jrimer -."1 K Joetna aktivnost aplika%i&e sa karti%ama

5?


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set2istAdapter 4ne@ Arra$Adapter


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O*o./ 0e.9 9 *rera&)a9 .a A.drod "%=%

Uko+ko /e a*+ka-'a ra()'a (a )er('9 A.drod "%= + .&9 /adr&a' 0e.'a o*-'a /e*o'a)+'9'e .a d.9 ekra.a .ako. k+ka .a d9g0e 5enu% O)a' 0e. /adr& do 2/a)k 0e.'a 9ko+ko *o/o' )e /a)k A.drod o/a+e /a)ke /0ea 9 o)ero0e. ko' /e o)ara dodro0 .a a/er 5ore%

Da ! /e .a)eo 0e. /a o*-'a0a (a .ek9 ak).o/ *ore!.o 'e *re*/a 0eod9

onCreate,ptions5enu67% U o)o' 0eod 'e 0og9e 9!a- .a 0e. 9 )d9 re/9r/a7de./a. 9 ML 1a'+9; 9 5enu

O)errde*9!+- !oo+ea. o.CreaeO*o./Me.97Me.9 0e.9; Me.9I.aer .aer _ geMe.9I.aer7; .aer%.ae7R%0e.9%0o'`0e., 0e.9; re9r. r9efUko+ko /e ra()'a a*+ka-'a (a A.drod "%=% .&e )er('e //e0 *o()a 0eod9onCreate,ptions5enu67kako ! *o kada kor/.k *o *r) *9 oo)r 0e. krerao

0e. o*-'a%

5.3.1.1. Obrada dodira kao dogaaja

Kada kor/.k /e+ek9'e /a)k9 0e.'a ( 0e.'a o*-'a //e0 *o()aon,ptionsIte-elected670eod 9.9ar .ae ak).o/% O)a' 0eod *ro/+e9'e/e+eko)a.9 /a)k9 0e.'a% Ide.ka-'a /a)ke 'e 0og9a *o()o0 getIte-Id67,ko'a )raa 'ed./)e. ID /a)ke 0e.'a ko' 'e de./a. 9 a.droddar!9979.9ar 0e.'a kao re/9r/a;% I/*)a.'e0 )red.o/ o)og ar!9a 0og9e 'e()ra)a ra(+e ak-'e% N*r

O)errde*9!+- !oo+ea. o.O*o./Ie0Se+e-ed7Me.9Ie0 e0;

5


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44 Ha.d+e e0 /e+e-o. /- 7e0%geIe0Id7;; -a/e R%d%.e`ga0e .eGa0e7; re9r. r9e -a/e R%d%e+* /oHe+*7; re9r. r9e de1a9+ re9r. /9*er%o.O*o./Ie0Se+e-ed7e0; ffUko+ko 'e /a)ka 0e.'a 9/*e.o o!rae.a odgo)or 'e TRUE 9 /9*ro.o0 'e*ore!.o *o()a on,ptionsIte-elected670*+e0e.a-'9 /9*erk+a/e%

5.3.1.2. ro!ena !enija o"#ija toko! i$%r&a%anja

Nako. o //e0 *o(o)e 0eod9 onCreate,ptions5enu67, (adr&a)a ./a.-9.a*9.'e.og 0e.'a )e .e *o()a onCreate,ptions5enu670eod9 o/0 9ko+ko0e. ( .ekog ra(+oga *o/a.e .e)a+da.% Soga /e 0eodaonCreate,ptions5enu67kor/ /a0o (a krera.'e .-'a+.og 0e.'a o*-'a a .e (a(0e.e oko0 &)o.og -k+9/a ak).o/%

Za (0e.e 0e.'a o*-'a ko'e /e !a(ra'9 .a dogaa'0a ko' /e dea)a'9 oko0&)o.og -k+9/a ak).o/ kor/ /e 0eodonPrepare,ptions5enu67% O)a' 0eod*ro/+e9'e 5enuo!'eka 9 re.9.o0 /a.'9 *a 'e 0og9e )r (0e.e kao o/9 doda)a.'e, !r/a.'e .o) /a)k + o.e0og9a)a.'e odree. /a)k%

U A.drod "%=% .&0 )er('a0a //e0 *o()a onPrepare,ptions5enu67/)ak*9 kada kor/.k o)or 0e. o*-'a 7*r/.e Me.9 d9g0e;%

-.0.".Freiran&e kontekstualnih meni&a

Ko.ek/9a+. 0e. 'e krea'9 0e. ko' /e *o'a)+'9'e kada kor/.k ()ra)a*rod9&e. k+k .a e+e0e.9% O0og9a)a ak-'9 .ad /e+eko)a.0 /adr&a'e0 +ok)ro0 9 ko'e0 /e ko.ek/ *o'a)+'9'e%


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Prka( krea'9eg ko.ek/9a+.og 0e.'a 7+e)a /+ka; ko.ek/9a+.og a-o. !ara7de/.a /++ka;%

Ko.ek/9a+. 0e. 'e 0og9e o!e(!ed (a !+o ko' *og+ed a+ /e .a'ee kor/(a e+e0e.e 9 L/Ve GrdVe9%

Po/o'e d)a .a.a (a o!e(!e)a.'e ko.ek/9a+. ak-'a

Krea'9 ko.ek/9a+. 0e.% Me. /e *o'a)+'9'e kao *okre.a +/a /a)k0e.'a% Kor/.k 0o&e da ()r ko.ek/9a+.9 ak-'9 .ad 'ed.0 *o 'ed.0e+e0e.o0%%

Ko.ek/9a+. a-o. 0ode% Ko.ek/9a+. a-o. !ar /e *o'a)+'9'e .a )r9

ekra.a /a e+e0e.0a ko' 99 .a /e+eko)a. e+e0e.% Kor/.- 0og9 da()ra)a'9 ak-'e .ad )e e+e0e.aa /o)re0e.o 79ko+ko o a*+ka-'ado()o+'a)a;% O)a o*-'a 'e o0og9e.a /a0o .a )er('a0a A.drod =% )0%

-.0.0.Freiran&e kreta&ue' kontekstualno' meni&a$; Reg/r9'e /e *og+ed 7!iew7 /a ko'0 e ko.ek/9a+. 0e. ! *o)e(a.*o()o0 register$orContext5enu67 *ro/+e)a.'e0 odgo)ara'9eg *og+eda%Uko+ko ak).o/ kor/ ist!iew + @rid!iew *

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