Practical Android

8/21/2019 Practical Android

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Patel Group of Institutions

SL-MC(650017)

Exercise : 1Create Hello World application. That will display Hello World in the middle of thescreen in the red color with white background.

Screen Shot:

XML :

main.xml :

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SL-MC(650017)JAVA :

FirstActivity.java :

package"gi#$irst%

importandroid#a""#&ctivity%importandroid#os#'undle%

publicclass(irst&ctivity extends&ctivity) publicvoidonreate*'undle saved+nstance,tate- ) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% //

Exercise : 2

To understand Activity !ntenta. Create sample application with login module."Check username and password#b. $n successful login go to ne%t screen. And on failing login alert user usingToast.c. Also pass username to ne%t screen

Screen Shot:

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SL-MC(650017)

XML :

main.xml :


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SL-MC(650017)android:layout_align0arentLe$t="true"android:layout_marginTo"="0dp"android:text="*nter assword :">

JAVA :

SecondActivity.java :

package"gi#,econd%

importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#os#'undle%importandroid#view#View%import android#view#View#3nlickListener%importandroid#widget#'utton%importandroid#widget#1ditText%importandroid#widget#Toast%

publicclass,econd&ctivity extends&ctivity implements3nlickListener) publicvoidonreate*'undle saved+nstance,tate- ) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 'utton login = *'utton-$indView'y+d*.#id#btnlogin-% 'utton clear = *'utton-$indView'y+d*.#id#btnclear-% login#set3nlickListener*this-% clear#set3nlickListener*this-% / publicvoidonlick*View v- ) 1ditText username = *1ditText-$indView'y+d*.#id#t$tusername-% 1ditText "assword =*1ditText-$indView'y+d*.#id#t$tpassword-% if*v#get+d*-==.#id#btnlogin- )

if*username#getText*-#to,tring*-#e2uals* 4"gi4- 55"assword#getText*-#to,tring*-#e2uals* 467894--

) !!Toast#makeText*this 4ok4 Toast#L1;T_L3;-#show*-% +ntent i = new+ntent*this,7#class-% i#"ut1xtra*4username4 username#getText*-#to,tring*--% start&ctivity*i-% /

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SL-MC(650017) else ) Toast#make2e$t*this 41rror4 Toast#*324_53-#show*-% / / if*v#get+d*-==.#id#btnclear-

) username#setText*44-% "assword#setText*44-% / //

S2.java :

package"gi#,econd%

importandroid#a""#&ctivity%importandroid#content#+ntent%

importandroid#gra"hics#olor%importandroid#os#'undle%importandroid#view#View%import android#view#Viewrou"#Layout0arams%importandroid#widget#'utton%importandroid#widget#LinearLayout%importandroid#widget#TextView%

publicclass,7 extends&ctivity) publicvoidonreate*'undle saved+nstance,tate- ) super#onreate*saved+nstance,tate-%

setontentView*.#layout#main-% +ntent i = get+ntent*-% !!Toast#makeText*this 4elcome4Toast#L1;T_L3;-#show*-% ,tring username=i#get,tring1xtra*4username4-%

TextView tv=newTextView*this-% 'utton btn'ack = new'utton*this-% btn'ack#setText*4'ack4-% tv#setText*4elcome 4username4 @4-% tv#setTextolor*olor#rgb*7AA 7AA 6BB--%

tv#setText,iCe*7A-% LinearLayout ll = newLinearLayout*this-%

ll#setLayout0arams*newLayout0arams*Layout0arams#67_'*2Layout0arams#67_'*2--%

ll#set3rientation*LinearLayout#%*27'-% ll#addView*tv-% ll#addView*btn'ack-% setontentView*ll-%

btn'ack#set3nlickListener*new'utton#3nlickListener*- ) publicvoidonlick*View v- ) setontentView*.#layout#main-% /

/-%/

/

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SL-MC(650017)Exercise : Create login application where you will have to validate &mail!'"(ser)ame#. Tillthe username and password is not validated login button should remain disabled.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :


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SL-MC(650017)

JAVA :

!hirdActivity.java :

package"gi#Third%

importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#os#'undle%importandroid#text#1ditable%importandroid#text#Textatcher%importandroid#view#View%import android#view#View#3nlickListener%importandroid#widget#'utton%importandroid#widget#1ditText%importandroid#widget#Toast%

publicclassThird&ctivity extends&ctivity implements3nlickListenerTextatcher) publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 1ditText txtemail = *1ditText-$indView'y+d*.#id#t$temail-% 1ditText txt"assword = *1ditText-$indView'y+d*.#id#t$tpassword-% txtemail#addTexthangedListener*this-% txt"assword#addTexthangedListener*this-% 'utton btn = *'utton-$indView'y+d*.#id#btnlogin-% btn#set3nlickListener*this-% / publicvoidonlick*View v- ) 1ditText txte = *1ditText-$indView'y+d*.#id#t$temail-% 1ditText txt" = *1ditText-$indView'y+d*.#id#t$tpassword-%

if*txte#getText*-#to,tring*-#e2uals* 4"gi4- 55txt"#getText*-#to,tring*-#e2uals* 467894--

) +ntent i = new+ntent*this,7#class-% i#"ut1xtra*4txte4 txte#getText*-#to,tring*--% start&ctivity*i-%

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SL-MC(650017) !!Toast#makeText*this 4Login###4Toast#L1;T_L3;-#show*-% / else ) Toast#make2e$t*this 4+nvalid4Toast#*324_53-#show*-% /

/ publicvoida$terTexthanged*1ditable s- ) 1ditText txte = *1ditText-$indView'y+d*.#id#t$temail-% 1ditText txt" = *1ditText-$indView'y+d*.#id#t$tpassword-% 'utton btn = *'utton-$indView'y+d*.#id#btnlogin-% if*txte#getText*-#to,tring*-#e2uals* 4"gi4- 55txt"#getText*-#to,tring*-#e2uals* 467894-- ) btn#set1nabled*true-% / else )

btn#set1nabled*false-% / /

publicvoidbe$oreTexthanged*har,e2uence argB intarg6 intarg7intarg8- )

!! TODO&utoDgenerated method stub

/publicvoidonTexthanged*har,e2uence argB intarg6 intarg7 int

arg8- )!! TODO&utoDgenerated method stub

/

/

S2.java :

package"gi#Third%

importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#gra"hics#olor%importandroid#os#'undle%importandroid#view#View%import android#view#Viewrou"#Layout0arams%importandroid#widget#'utton%

importandroid#widget#LinearLayout%importandroid#widget#TextView%

publicclass,7 extends&ctivity) publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% +ntent i= get+ntent*-%

!!Toast#makeText*this4elcome4Toast#L1;T_L3;-#show*-% ,tring txte=i#get,tring1xtra*4txte4-%

TextView tv=newTextView*this-%

'utton btn'ack = new'utton*this-% btn'ack#setText*4'ack4-% tv#setText*4elcome 4txte4 @4-%

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SL-MC(650017) tv#setTextolor*olor#rgb*7AA 7AA 6BB--%

tv#setText,iCe*7A-% LinearLayout ll = newLinearLayout*this-% ll#setLayout0arams*newLayout0arams*Layout0arams#67_'*2Layout0arams#67_'*2--% ll#set3rientation*LinearLayout#%*27'-%

ll#addView*tv-% ll#addView*btn'ack-% setontentView*ll-%

btn'ack#set3nlickListener*new'utton#3nlickListener*- ) publicvoidonlick*View v- ) !!setontentView*.#layout#main-% $inish*-% /

/-% /

/

Exercise : "Create and *ogin application as above . $n successful login open browser withany (+*.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :


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SL-MC(650017)android:layout_align0arentLe$t="true"android:layout_marginTo"="1(dp"android:text="assword :">

JAVA :

Fo#rthActivity.java :

package"gi#(ourth%

importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#net#Eri%importandroid#os#'undle%importandroid#text#1ditable%importandroid#text#Textatcher%importandroid#view#View%import android#view#View#3nlickListener%importandroid#widget#'utton%

importandroid#widget#1ditText%

publicclass(ourth&ctivity extends&ctivity implements3nlickListenerTextatcher) publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 1ditText username = *1ditText-$indView'y+d*.#id#t$tusername-% 1ditText "assword = *1ditText-$indView'y+d*.#id#t$tpassword-% username#addTexthangedListener*this-% "assword#addTexthangedListener*this-%

'utton login = *'utton-$indView'y+d*.#id#btnlogin-% login#set3nlickListener*this-% /

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SL-MC(650017) publicvoidonlick*View v- ) +ntent i= new+ntent*4android#intent#action#V+14-%

i#setFata*Eri#parse*4htt":!!www#kevalnagaria#blogs"ot#com4 --%start&ctivity*i-%

/

publicvoida$terTexthanged*1ditable s- ) 1ditText e = *1ditText-$indView'y+d*.#id#t$tusername-% 1ditText " = *1ditText-$indView'y+d*.#id#t$tpassword-% 'utton b = *'utton-$indView'y+d*.#id#btnlogin-% if*e#getText*-#to,tring*-#e2uals* 4"gi4- 55"#getText*-#to,tring*-#e2uals*467894-- ) b#set1nabled*true-% / else ) b#set1nabled*false-%

/ /

publicvoidbe$oreTexthanged*har,e2uence argB intarg6 intarg7intarg8- )


/publicvoidonTexthanged*har,e2uence argB intarg6 intarg7 int

arg8- )!! TODO&utoDgenerated method stub

//

Exercise : $Create an application that will pass some number to the ne%t screen and on thene%t screen that number of items should be display in the list.

Screen Shot:

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SL-MC(650017)

XML :

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SL-MC(650017)main.xml :

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SL-MC(650017)importandroid#view#View%import android#view#View#3nlickListener%importandroid#widget#'utton%importandroid#widget#1ditText%

publicclass(i$th&ctivity extends&ctivity implements3nlickListener

) G3verride publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 'utton b = *'utton-$indView'y+d*.#id#btnne$t-% b#set3nlickListener*this-% / publicvoidonlick*View v- ) +ntent i = new+ntent*this,7#class-% 1ditText item = *1ditText-$indView'y+d*.#id#t$titem-%

i#"ut1xtra*4item4 item#getText*-#to,tring*--% start&ctivity*i-% //

S2.java :

package"gi#(i$th%

importHava#util#&rrayList%

importandroid#a""#List&ctivity%importandroid#os#'undle%importandroid#widget#&rray&da"ter%

publicclass,7 extendsList&ctivity) !II @authorJGGF I!

&rrayList arr=new&rrayList*-%&rray&da"ter a%inti=B%

publicvoidonreate*'undle saved+nstance,tate-)

super#onreate*saved+nstance,tate-%

setontentView*.#layout#main1-% a= new&rray&da"ter*thisandroid#.#layout#simple_list_item_1arr-% setList&da"ter*a-% for*i=6% i


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SL-MC(650017)

Exercise : &(nderstand resource folders ,a. Create spinner with strings taken from resource folder"res -- value folder#.b. $n changing spinner value change image.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

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SL-MC(650017)

importandroid#a""#&ctivity%importandroid#os#'undle%importandroid#view#View%importandroid#widget#&da"terView%importandroid#widget#+mageView%

importandroid#widget#,"inner%importandroid#widget#Toast%import android#widget#&da"terView#3n+tem,electedListener%

publicclass,ix&ctivity extends&ctivity implements3n+tem,electedListener)

+ntegerK image+Fs=)

.#drawable#keal1

.#drawable#keal

.#drawable#keal

.#drawable#keal(

.#drawable#keal)/%


super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% ,"inner s = *,"inner-$indView'y+d*.#id#spinner1-% s#set3n+tem,electedListener*this-% /

publicvoidon+tem,elected*&da"terView argB View arg6 intarg7longarg8-

) Toast#make2e$t*this 4,elected +tem is = 4argB#get,elected+tem*-#to,tring*- Toast#*324_452-#show*-%

+mageView i = *+mageView-$indView'y+d*.#id#image%iew1-%i#set+mage.esource*image+FsKarg7-%

/publicvoidon;othing,elected*&da"terView argB-)

//

Exercise : '(nderstand enu option.a. Create an application that will change color of the screen based on selectedoptions from the menu.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

SeventhActivity.java :

package"gi#,eventh%

importandroid#a""#&ctivity%importandroid#gra"hics#olor%importandroid#os#'undle%

importandroid#view#Menu%importandroid#view#Menu+tem%

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SL-MC(650017)importandroid#widget#.elativeLayout%

publicclass,eventh&ctivity extends&ctivity)

G3verride


super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% / publicbooleanonreate3"tionsMenu*Menu menu-

) super#onreate3"tionsMenu*menu-% reateMenu*menu-% returntrue% / publicbooleanon3"tions+tem,elected*Menu+tem item- )

returnMenuhoice*item-% / privatevoidreateMenu*Menu menu- ) Menu+tem mnu6 = menu#add*B B B 4.ed4-% )

mnu6#set&l"habetic,hortcut*NrN-% mnu6#set+con*.#drawable#icon-%

/ Menu+tem mnu7 = menu#add*B 6 B 4reen4-% ) mnu7#set&l"habetic,hortcut*NgN-% mnu7#set+con*.#drawable#icon-%

/ Menu+tem mnu8 = menu#add*B 7 B 4hite4-% ) mnu8#set&l"habetic,hortcut*NwN-% mnu8#set+con*.#drawable#icon-% / / privatebooleanMenuhoice*Menu+tem item- ) .elativeLayout l= *.elativeLayout-$indView'y+d*.#id#relatiea#out1-%

switch*item#get+tem+d*--

) caseB: l#set'ackgroundolor*olor#*;-%

returntrue% case6: l#set'ackgroundolor*olor#3**-%

returntrue% case7: l#set'ackgroundolor*olor#=472*-%

returntrue% /

returnfalse% /

/

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SL-MC(650017)

Exercise : (Create an application that will display toast"essage# on specific interval of time.

Screen Shot:

XML :

main.xml :

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SL-MC(650017)

JAVA :

Ei)htActivity.java :

package"gi#1ight%

importHava#util#Timer%importHava#util#TimerTask%importandroid#a""#&ctivity%importandroid#os#'undle%importandroid#os#andler%importandroid#view#View%import

android#widget#'utton%importandroid#widget#Toast%

publicclass1ight&ctivity extends&ctivity)

publicvoidonreate*'undle saved+nstance,tate- ) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-%

finalandler h = newandler*-% final.unnable r = new.unnable*- ) publicvoidrun*-

) Toast#make2e$t*get'aseontext*- 0+Toast#*324_452-#show*-% / /% Timer t = newTimer*-% t#schedule&t(ixed.ate*newTimerTask*- )

publicvoidrun*-)

h#"ost*r-%/

/ 6BBB ABBB-% 'utton b = *'utton-$indView'y+d*.#id#btnfinish-% b#set3nlickListener*newView#3nlickListener*- )

publicvoidonlick*View argB-)

$inish*-%

android#os#0rocess#killrocess*android#os#0rocess#m#id*--%/

/-% //

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SL-MC(650017)

*+

Exercise : (Create an application that will display toast"essage# on specific interval of time.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

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SL-MC(650017),hronometer.java :

package"gi#hronometer%

importandroid#a""#&ctivity%importandroid#os#'undle%

importandroid#widget#hronometer%import android#widget#hronometer#3nhronometerTickListener%importandroid#widget#1ditText%importandroid#widget#Toast%

publicclasshronometer&ctivity extends&ctivity) inti=B% intFuration=6B% publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-%

hronometer chn = *hronometer-$indView'y+d*.#id#chronometer1-%

chn#start*-% chn#set3nhronometerTickListener*new3nhronometerTickListener*-

)publicvoidonhronometerTick*hronometer argB-)

1ditText txt =*1ditText-$indView'y+d*.#id#edit2e$t1-%

txt#setText*4Message ill 'e Fis"lay &$ter K4*FurationD*i6--4 ,econds4-%

i%if*i>=Furation-

)Toast#make2e$t*hronometer&ctivity#this

4Message4*i!6B- 6BBBB-#show*-%Furation=6B%

//

/-% //

Exercise : -Create a background application that will open activity on specific time.

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SL-MC(650017)Screen Shot:

XML :

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JAVA :

MyService.java

package"gi#;ine%

importkmn#servicedemo#.%importandroid#a""#,ervice%importandroid#content#+ntent%importandroid#media#Media0layer%importandroid#os#+'inder%importandroid#util#Log%importandroid#widget#Toast%

publicclassMy,ervice extends,ervice

) privatestaticfinal,tring 2'3= 4My,ervice4%Media0layer "layer%

public+'inder on'ind*+ntent intent-)

returnnull%/

publicvoidonreate*-)

Toast#make2e$t*this 4My ,ervice reated4Toast#*324_53-#show*-%

Log#d*2'3 4onreate4-%

"layer= Media0layer#create*this .#raw#braincand#-%

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SL-MC(650017)"layer#setLoo"ing*false-% !! ,et loo"ing

/

publicvoidonFestroy*-)

Toast#make2e$t*this 4My ,ervice ,to""ed4

Toast#*324_53-#show*-%Log#d*2'3 4onFestroy4-%"layer#sto"*-%

/

publicvoidon,tart*+ntent intent intstartid-)

Toast#make2e$t*this 4My ,ervice ,tarted4Toast#*324_53-#show*-%

Log#d*2'3 4on,tart4-%"layer#start*-%

//

ine.java

package"gi#;ine%

importkmn#servicedemo#.%importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#os#'undle%importandroid#util#Log%importandroid#view#View%import android#view#View#3nlickListener%importandroid#widget#'utton%

publicclass;ine extends&ctivity implements3nlickListener) !II @authorJGGF I! privatestaticfinal,tring 2'3= 4,ervicesFemo4% publicvoidonreate*'undle saved+nstance,tate- )

super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 'utton start = *'utton-$indView'y+d*.#id#button1-% 'utton sto" = *'utton-$indView'y+d*.#id#button-% start#set3nlickListener*this-% sto"#set3nlickListener*this-% /

publicvoidonlick*View v-)

if*v#get+d*-==.#id#button1-)

Log#d*2'3 4onlick: starting srvice4-%

start,ervice*new+ntent*this My,ervice#class--%!!break%

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SL-MC(650017)/if*v#get+d*-==.#id#button-)

Log#d*2'3 4onlick: sto""ing srvice4-%sto",ervice*new+ntent*this My,ervice#class--%!!break%

//

/

Exercise : 1/Create an application that will have spinner with list of animation names. $nselecting animation name that animation should affect on the images displayedbelow.

XML :

main.xml :


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SL-MC(650017)

~> in this problem we make anim folder to res. Directory and

create an xml file like following:

al0ha.xml :

android:"ivotJ=")0A"

android:duration="?000" !>

scale.xml :

s0in.xml :


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SL-MC(650017) android:"ivotJ=")0A"android:re"eatount="infinite"

!>

translate.xml :

JAVA :

!enActivity.java :

package"gi#Ten%

importandroid#a""#&ctivity%importandroid#os#'undle%importandroid#view#View%importandroid#view#animation#&nimation%import android#view#animation#&nimationEtils%

importandroid#widget#&da"terView%import android#widget#&da"terView#3n+tem,electedListener%importandroid#widget#+mageView%importandroid#widget#,"inner%

publicclassTen&ctivity extends&ctivity implements3n+tem,electedListener) G3verride publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% ,"inner s = *,"inner-$indView'y+d*.#id#spinner1-%

s#set3n+tem,electedListener*this-% /

publicvoidon+tem,elected*&da"terView argB View arg6 intarg7longarg8-

)+mageView i = *+mageView-$indView'y+d*.#id#image%iew1-%if*arg8==6-)

&nimation a = &nimationEtils#load'nimation*this.#anim#alpha-%

i#start&nimation*a-%/if*arg8==7-)

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SL-MC(650017)&nimation a = &nimationEtils#load'nimation*this

.#anim#rotate-%i#start&nimation*a-%

/if*arg8==8-)

&nimation a = &nimationEtils#load'nimation*this.#anim#scale-%

i#start&nimation*a-%/if*arg8==9-)

&nimation a = &nimationEtils#load'nimation*this.#anim#spin-%

i#start&nimation*a-%/if*arg8==A-)

&nimation a = &nimationEtils#load'nimation*this

.#anim#translate-%i#start&nimation*a-%

//

publicvoidon;othing,elected*&da"terView argB-)

//

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SL-MC(650017)

Exercise : 11(nderstanding of (! ,a. Create an (! such that one screen have list of all the types of cars.

b. $n selecting of any car name ne%t screen should show Car details like , name launched date company name images"using gallery# if available show differentcolors in which it is available.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

Main1.xml :

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SL-MC(650017)

JAVA :

ElevenActivity.java :

package"gi#1leven%importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#os#'undle%importandroid#view#View%importandroid#widget#&da"terView%

importandroid#widget#ListView%importandroid#widget#Toast%import android#widget#&da"terView#3n+temlickListener%

publicclass1leven&ctivity extends&ctivity implements3n+temlickListener) ListView lv%

G3verride publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% lv=*ListView- $indView'y+d*.#id#l-%

lv#setlickable*true-% lv#set3n+temlickListener*this-% /

publicvoidon+temlick*&da"terView argB View arg6 intarg7longarg8-

)try

)+nteger itn=+nteger#alue5f*arg7-%,tring ext=itn#to,tring*-%+ntent i = new+ntent*thisar+n$o#class-%i#"ut1xtra*4ar0os4 ext-%

start&ctivity*i-%/catch*1xce"tion e-

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SL-MC(650017))

Toast#make2e$t*this e#getMessage*-4 3n+temlick4Toast#*324_53-#show*-%

//

/

,arn%o.java

package"gi#1leven%importandroid#a""#&ctivity%importandroid#content#ontext%importandroid#content#+ntent%importandroid#content#res#Ty"ed&rray%importandroid#os#'undle%importandroid#view#View%importandroid#view#Viewrou"%importandroid#widget#'ase&da"ter%importandroid#widget#allery%

importandroid#widget#+mageView%importandroid#widget#TextView%

publicclassar+n$o extends&ctivity)

TextView tv%privateallery gallery%G3verridepublicvoidonreate*'undle saved+nstance,tate-) super#onreate*saved+nstance,tate-% setontentView*.#layout#main1-%

tv=*TextView- $indView'y+d*.#id#t-%

+ntent i=this#get+ntent*-% ,tring str =i#get,tring1xtra*4ar0os4-%

gallery= *allery- $indView'y+d*.#id#e$amplegaller#-% gallery#set&da"ter*new&dd+mg&d"*thisstr--% if*str#e2uals*4B4-- ) tv#setText*4;ame:Maruti ,uCuki PBB44Qn44Launched

Fate:6!8!6RPS44Qn44om"any ;ame:Maruti ,uCuki44Qnolors&vailable:QnhiteQn'lueQn.edQnLight Jellow4-%

/ elseif*str#e2uals*464--

) tv#setText*4;ame:yundai &ccent 1xecutive44Qn44Launched

Fate:6A!6B!7B6B44Qn44om"any ;ame:yundai44Qnolors&vailable:QnrayQn3cean 'lueQnMidnight 'lackQnMaganta 'lue4-%

/ elseif*str#e2uals*474-- ) tv#setText*4;ame:hevrolet 'eat44Qn44Launched

Fate:66!66!7B6644Qn44om"any ;ame:hevrolet44Qnolors&vailable:QnMidnight 'lackQn&maCon reenQn.oyal oldQn,"ort .ed4-%

/ else )

tv#setText*4;o car available4-% //

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SL-MC(650017)/class&dd+mg&d" extends'ase&da"ter)

intal+tem'g%privateontext cont%,tring "ositionLast%

private+ntegerK +mgidb= ).#drawable#b1 .#drawable#b.#drawable#b .#drawable#b(/%

private+ntegerK +mgidh= ).#drawable#h1 .#drawable#h.#drawable#h .#drawable#h(/%

private+ntegerK +mgidm= ).#drawable#m1 .#drawable#m.#drawable#m .#drawable#m(/%

public&dd+mg&d"*ontext c,tring "os-)cont= c%"ositionLast="os%Ty"ed&rray ty"&rray =

c#obtain,tyled&ttributes*.#styleable# 3aller#2heme-%

al+tem'g=ty"&rray#get.esource+d*.#styleable# 3aller#2heme_android_galler#7tem>ackground B-%

ty"&rray#recycle*-%/

publicintgetount*-)if*"ositionLast#e2uals*4B4--)

return+mgidm#length%/

elseif*"ositionLast#e2uals*464--)return+mgidh#length%

/elseif*"ositionLast#e2uals*474--)

return+mgidb#length%/else

)return+mgidm#length%

//

public3bHect get+tem*int"osition- )return"osition%/

publiclongget+tem+d*int"osition- )return"osition%/

publicView getView*int"osition View convertView Viewrou" "arent-)+mageView imgView = new+mageView*cont-%if*"ositionLast#e2uals*4B4--

) imgView#set+mage.esource*+mgidmK"osition-%/

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SL-MC(650017)elseif*"ositionLast#e2uals*464--)

imgView#set+mage.esource*+mgidhK"osition-%/elseif*"ositionLast#e2uals*474--)

imgView#set+mage.esource*+mgidbK"osition-%/else

)imgView#set+mage.esource*+mgidmK"osition-%

/!! (ixing width 5 height $or image to dis"layimgView#setLayout0arams*newallery#Layout0arams*7BB 7BB--%imgView#set,caleTy"e*+mageView#,caleTy"e# 672_BC-%imgView#set'ackground.esource*al+tem'g-%returnimgView%/

/

Exercise : 12(nderstanding content providers and permissions,a. +ead phonebook contacts using content providers and display in list.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

!elveActivity.java :

package"gi#Twelve%importHava#util#&rrayList%importandroid#a""#&ctivity%importandroid#database#ursor%importandroid#os#'undle%

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SL-MC(650017)import android#"rovider#ontactsontract%import android#"rovider#ontactsontract#0honeLooku"%importandroid#util#Log%importandroid#widget#&rray&da"ter%importandroid#widget#ListView%

publicclassTwelve&ctivity extends&ctivity)

private&rrayList list% publicvoidonreate*'undle saved+nstance,tate-

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% intH=B% ursorc=getontent.esolver*-#2uery*ontactsontract#ontacts# 52*2_,7 nullnullnullnull-%

list= new&rrayList*-% while*c#moveTo;ext*-- ) int nameindex=c#getolumn+ndex*0honeLooku"#;7'C_'9*-% ,tring name=c#get,tring*nameindex-% list#add*name-% Log#d*4ontacts:4name-%

/ ListView l=*ListView-$indView'y+d*.#id#list%iew1-% &rray&da"ter aa=new&rray&da"ter*thisandroid#.#layout#simple_list_item_1list-% l#set&da"ter*aa-% /

/

Exercise : 1+ead messages from the mobile and display it on the screen.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

!hirteenActivity.java :

package"gi#Thirteen%

importandroid#a""#&ctivity%importandroid#database#ursor%

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SL-MC(650017)importandroid#gra"hics#olor%importandroid#net#Eri%importandroid#os#'undle%importandroid#widget#TextView%

publicclassThirteen&ctivity extends&ctivity

)

publicvoidonreate*'undle saved+nstance,tate-) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% TextView view = newTextView*this-% Eri uri,M, = Eri#parse*4content:!!sms!inbox4-% ursor c = getontent.esolver*-#2uery*uri,M, null null

nullnull-% ,tring sms = 44% while*c#moveTo;ext*-- )

sms = 4(rom :4 c#get,tring*7- 4 : 4c#get,tring*66-4Qn4%

/ view#setText*sms-% view#set'ackgroundolor*olor#>,*-% view#setTextolor*olor#=472*-% setontentView*view-%/

/

Exercise : 1"Create an application to call specific entered number by user in the &ditTe%t

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

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SL-MC(650017)

JAVA :

Fo#rteenActivity.java :

package"gi#(ourteen%

importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#net#Eri%importandroid#os#'undle%importandroid#view#View%importandroid#widget#'utton%importandroid#widget#1ditText%

publicclass(ourteen&ctivity extends&ctivity)

G3verride

publicvoidonreate*'undle saved+nstance,tate-) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 'utton call = *'utton-$indView'y+d*.#id#btncall-% call#set3nlickListener*newView#3nlickListener*-

) publicvoidonlick*View v-

) 1ditText txt = *1ditText-$indView'y+d*.#id#t$tnumber-% Eri uri=Eri#parse*4tel:4txt#getText*-#to,tring*--%

+ntent intent=new+ntent*+ntent#'275_' uri-%start&ctivity*intent-%

/ /-% /

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SL-MC(650017)/

Exercise : 1$Create an application that will create database with table of (ser credential.

Screen Shot:

XML :

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JAVA :

Fi%teenActivity.java :

a"ackage "gi#(i$teen%

importandroid#a""#&ctivity%

importandroid#database#ursor%importandroid#database#s2lite#,LiteFatabase%importandroid#gra"hics#olor%importandroid#os#'undle%importandroid#util#Log%importandroid#widget#TextView%

publicclass(i$teen&ctivity extends&ctivity)

G3verridepublicvoidonreate*'undle saved+nstance,tate-)


,LiteFatabase myF'= null%,tring Table;ame = 4myTable4%

,tring Fata=44%

!I reate a Fatabase# I!try)

myF' = this#o"en3rreateFatabase*4Fatabase;ame495;*_7%'2* null-%

!I reate a Table in the Fatabase# I!

myF'#exec,L*4.1&T1 T&'L1 +( ;3T 1O+,T, 4 Table;ame 4 *(ield6 V&.&. (ield7 +;T*8--%4-%!I +nsert data to a TableI!myF'#exec,L*4+;,1.T +;T3 4 Table;ame 4 *(ield6

(ield7-4 4 V&LE1, *NJGGFN 77-%4-%!Iretrieve data $rom database I!ursor c = myF'#rawuery*4,1L1T I (.3M 4 Table;ame

null-%

intolumn6 = c#getolumn+ndex*4(ield64-%intolumn7 = c#getolumn+ndex*4(ield74-%

!! heck i$ our result was valid#

c#moveTo(irst*-%if*c @= null-)

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SL-MC(650017)!! Loo" through all .esultsdo) ,tring ;ame = c#get,tring*olumn6-% int&ge = c#get+nt*olumn7-% Fata =Fata ;ame4!4&ge4Qn4%

/while*c#moveTo;ext*--%/TextView tv = newTextView*this-%tv#set'ackgroundolor*olor#>,*-%tv#setTextolor*olor#=472*-%tv#setText*Fata-%setontentView*tv-%

/catch*1xce"tion e-)

Log#e*41rror4 41rror4 e-%/finally

)if*myF' @= null-

myF'#close*-%/

//

3ro0!4.java :

package"gi#(i$teen%

importandroid#a""#&ctivity%importandroid#database#s2lite#,LiteFatabase%

importandroid#os#'undle%importandroid#util#Log%

publicclassFro"Tb extends&ctivity)

G3verridepublicvoidonreate*'undle saved+nstance,tate-)


,LiteFatabase myF'= null%,tring Table;ame = 4myTable4%

!III reate a Fatabase#I I!try)

myF' = this#o"en3rreateFatabase*4Fatabase;ame495;*_7%'2* null-%

myF'#exec,L*4F.30 T&'L1 +( 1O+,T, 4Table;ame4%4-%


Log#e*41rror4 41rror4 e-%/finally

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SL-MC(650017))

if*myF' @= null-myF'#close*-%

//

/

Exercise : 1&

Create an application to read file from asset folder and copy it in memory card.

Screen Shot:

XML :

s1.xml :


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SL-MC(650017) android:layout_height="fill_parent" android:weight,um="1"android:background="@color/bgcolor">

JAVA :

SixteenActivity.java :

package"gi#,ixteen%importHava#io#(ile%importHava#io#(ile3ut"ut,tream%importHava#io#+31xce"tion%importHava#io#+n"ut,tream%importHava#io#3ut"ut,tream%importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#os#'undle%importandroid#widget#Toast%

publicclass,ixteen&ctivity extends&ctivity

)

(ile3ut"ut,tream $os%


) super#onreate*saved+nstance,tate-% setontentView*.#layout#s1-%

try)

,tring dest0ath = 4!sdcard!kmn#txt4%(ile $ = new(ile*dest0ath-%if*@$#exists*--)

o"yF'* get'aseontext*-#get&ssets*-#o"en*4$ile#txt4-new(ile3ut"ut,tream*dest0ath--%

/+ntent i = new

+ntent*,ixteen&ctivity#thisscreen6#class-% start&ctivity*i-%

/catch*1xce"tion e-

)

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SL-MC(650017)Toast#make2e$t*,ixteen&ctivity#this 4 4e#to,tring*-

Toast#*324_53-#show*-%/

/ publicvoido"yF'*+n"ut,tream in"ut,tream3ut"ut,treamout"ut,tream-throws+31xce"tion

)!!DDDco"y 6U bytes at a timeDDDbyteK bu$$er = newbyteK6B79%intlength%while**length = in"ut,tream#read*bu$$er-- > B-)

out"ut,tream#write*bu$$er B length-%/in"ut,tream#close*-%out"ut,tream#close*-%

//

screen1.java :

package"gi#,ixteen%

importHava#io#Fata+n"ut,tream%importHava#io#(ile%importHava#io#(ile+n"ut,tream%importandroid#a""#&ctivity%importandroid#os#'undle%importandroid#os#1nvironment%importandroid#widget#TextView%importandroid#widget#Toast%

publicclassscreen6 extends&ctivity)

publicvoidonreate*'undle b-)

super#onreate*b-%setontentView*.#layout#s1-%try)

(ile $ileFir = 1nvironment#get*$ternaltorage;irector#*-% (ile directory = new (ile*$ileFir#get&bsolute0ath*--% (ile $ile = new(ile*directory 4kmn#txt4-% (ile+n"ut,tream $is = new(ile+n"ut,tream*$ile-%

,tring str = null%,tring'u$$er sbu$$er = new,tring'u$$er*-%Fata+n"ut,tream dataio = newFata+n"ut,tream*$is-%while**str = dataio#readLine*-- @= null-)

sbu$$er#a""end*str 4Qn4-%/TextView txt=*TextView-$indView'y+d*.#id#show2$t-%txt#setText*sbu$$er-%


Toast#make2e$t*this 4 4e#to,tring*-

Toast#*324_53-#show*-%/

/

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SL-MC(650017)/

Exercise : 1'Create an application that will play a media file from the memory card.

Screen Shot:

XML :

main.xml :

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SL-MC(650017)

) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% 'utton start=*'utton-$indView'y+d*.#id#button1-% 'utton sto"=*'utton-$indView'y+d*.#id#button-% get,ystem,ervice*ontext#',;75_*%7*-% start#set3nlickListener*newView#3nlickListener*- )

publicvoidonlick*View argB-)

try

)"layer=null%"layer=newMedia0layer*-%,tring

audio(ile0ath=4!sdcard!braincandy#m"84%"layer#setFata,ource*audio(ile0ath-%"layer#"re"are*-%"layer#start*-%

/catch*1xce"tion e-

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SL-MC(650017))

Toast#make2e$t*,eventeen&ctivity#this44eToast#*324_53-#show*-%

//

/-% sto"#set3nlickListener*newView#3nlickListener*-

)publicvoidonlick*View argB-

) "layer#sto"*-%

//-%

//

56ste0 to add a m0 %ile to sdcard

17)oto the ddms

27clic8 on 0#sh 4#tton

7and select the )iven m0 %ile.

Exercise : 1(

Create an application to make !nsert update 'elete and retrieve operation onthe database.

Main.java:

packagecom#lebreemelow#$irsta""%

importandroid#os#'undle%


importandroid#widget#'utton%

importandroid#widget#+mageView%

importandroid#view#View%

importandroid#content#+ntent%

importandroid#view#Menu%

publicclassMain&ctivity extends&ctivity )

private'utton b%

private'utton b6%

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SL-MC(650017)G3verride

publicvoidonreate*'undle saved+nstance,tate- )


setontentView*.#layout#actiit#_main-%

b=*'utton- $indView'y+d*.#id#button1-%

b#set3nlickListener*newView#3nlickListener*- )

publicvoidonlick*View argB- )

start&ctivity*new+ntent*Main&ctivity#this+nsert#class--%

!!setontentView*.#layout#second-%

/

/-%

b6=*'utton- $indView'y+d*.#id#button-%

b6#set3nlickListener*newView#3nlickListener*- )



+ntent i=new+ntent*Main&ctivity#this,how#class-%

start&ctivity*i-%

/

/-%

/

/

nsert.java:



importandroid#content#ontentValues%

importandroid#database#s2lite#,LiteFatabase%



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SL-MC(650017)importandroid#widget#'utton%


importandroid#widget#Toast%

"

publicclass+nsert extends&ctivity )

private1ditText name%

private1ditText mno%

private'utton submit%

G3verride



setontentView*.#layout#second-%

submit=*'utton- $indView'y+d*.#id#button1-%

name=*1ditText- $indView'y+d*.#id#edit2e$t1-%

mno=*1ditText- $indView'y+d*.#id#edit2e$t-%

submit#set3nlickListener*newView#3nlickListener*- )


,LiteFatabasedb=o"en3rreateFatabase*4Mydb#db495;*_7%'2*null-%

db#exec,L*4create table i$ not exists Mytable*"namevarchar"mo varchar-%4-%


,tring n=name#getText*-#to,tring*-%

,tring m=mno#getText*-#to,tring*-%

ontentValues cv=newontentValues*-%

cv#"ut*4"name4n-%

cv#"ut*4"mo4m-%

db#insert*4Mytable4nullcv-%

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SL-MC(650017)!!db#close*-%

name#setText*44-%

mno#setText*44-%

Toast#make2e$t*get&""licationontext*-4recodrdsave4Toast#*324_53-#show*-%

/

/-%

/

/

!how.java:

"ackage com#lebreemelow#$irsta""%

im"ort Hava#util#&rrayList%

im"ort android#a""#&ctivity%

im"ort android#content#+ntent%

im"ort android#database#ursor%

im"ort android#database#s2lite#,LiteFatabase%

!!im"ort android#database#ursor%

!!im"ort android#database#s2lite#,LiteFatabase%

im"ort android#os#'undle%

im"ort android#view#ontextMenu%

im"ort android#view#Menu+tem%

im"ort android#view#View%

im"ort android#view#ontextMenu#ontextMenu+n$o%

im"ort android#widget#&da"terView%

im"ort android#widget#&da"terView#&da"terontextMenu+n$o%

im"ort android#widget#&rray&da"ter%

im"ort android#widget#ListView%

im"ort android#widget#Toast%

"ublic class ,how extends &ctivity )

"rivate ListView l%

PGI Page 57


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SL-MC(650017)"rivate &rrayList items=new &rrayList*-%

,LiteFatabase db%

G3verride

"ublic void onreate*'undle saved+nstance,tate- )

su"er#onreate*saved+nstance,tate-%

setontentView*.#layout#third-%

db=o"en3rreateFatabase*4Mydb#db4M3F1_0.+V&T1null-%

l=*ListView- $indView'y+d*.#id#listView6-%

ursor c=db#rawuery*4select I $rom Mytable4null-%

while*c#moveTo;ext*--

)

,tring n=c#get,tring*B-%

,tring m=c#get,tring*6-%

!!items#add*n4 Qn 4m-%

items#add*n-%

/

l#set&da"ter*new&rray&da"ter*thisandroid#.#layout#sim"le_list_item_6

items--%

register(orontextMenu*l-%

/

"ublic void onreateontextMenu*ontextMenu menu View vontextMenu+n$o mi-

)

su"er#onreateontextMenu*menu vmi-%

i$*v#get+d*-==.#id#listView6-

)

menu#seteaderTitle*4,elect 3"tion4-%

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SL-MC(650017)menu#add*B 6 menu#;3;14.emove +tem4-%

menu#add*B7menu#;3;141dit +tem4-%

/

/

"ublic boolean onontext+tem,elected*Menu+tem item-

)

int itemid=item#get+tem+d*-%

i$*itemid==6-

)

&da"terView#&da"terontextMenu+n$o menuin$o%

menuin$o=*&da"terontextMenu+n$o- item#getMenu+n$o*-%

int index_id=menuin$o#"osition%

,tring user_id=items#get*index_id-%

db#exec,L*4delete $rom Mytable where"name=N4user_id4N4-%

Toast#makeText*thisuser_idToast#L1;T_L3;-#show*-%

/

else i$*itemid==7-

)

&da"terView#&da"terontextMenu+n$o menuin$o%

menuin$o=*&da"terontextMenu+n$o- item#getMenu+n$o*-%

int index_id=menuin$o#"osition%

,tring user_id=items#get*index_id-%

+ntent i=new +ntent*Third#this(ourth#class-%

start&ctivity*i-%

Toast#makeText*this41ditFata4Toast#L1;T_L3;-#show*-%

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SL-MC(650017)/

return su"er#onontext+tem,elected*item-%

/

/

"dit.java:



importandroid#content#ontentValues%

importandroid#database#ursor%

importandroid#database#s2lite#,LiteFatabase%





importandroid#widget#Toast%

publicclass1dit extends&ctivity )

private1ditText name%

private1ditText mno%

private'utton bedit%

,tring user_id%

G3verride



setontentView*.#layout#fourth-%

name=*1ditText- $indView'y+d*.#id#edit2e$t-%

mno=*1ditText- $indView'y+d*.#id#edit2e$t(-%

bedit=*'utton- $indView'y+d*.#id#button(-%

final,LiteFatabasedb=o"en3rreateFatabase*4Mydb#db495;*_7%'2*null-%

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SL-MC(650017) ursor c=db#2uery*4Mytable4null4"name=?4new,tringK)4aHay4/null null null-%

if*c@=null-

)

c#moveToLast*-%

/

name#setText*c#get,tring*B--%

mno#setText*c#get,tring*6--%

bedit#set3nlickListener*newView#3nlickListener*- )


ontentValues cv=newontentValues*-%

cv#"ut*4"name4name#getText*-#to,tring*--%

cv#"ut*4"mo4mno#getText*-#to,tring*--%

db#u"date*4Mytable4cv4"name=?4new,tringK)4aHay4/-%

Toast#make2e$t*(ourth#this4success$ullyu"date4Toast#*324_53-#show*-%


/

/-%

/

/

Main#xml:


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SL-MC(650017) android:id="@!id/button1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_align0arentLe$t="true"

android:layout_align0arentTo"="true"

android:layout_marginLe$t="(dp"

android:layout_marginTo"="1(dp"

android:background="@drawable/rect"

android:text="7nsert data"!>


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SL-MC(650017) android:text="this is the second actiit#"!>


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SL-MC(650017) android:id="@!id/list%iew1"

android:layout_width="match_parent"

android:layout_height="wrap_content">

#pdate.xml:

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SL-MC(650017)

Main.java:

packagecom#store#$ilestorage%

importHava#io#(ile%

importHava#io#(ile+n"ut,tream%

importHava#io#(ile;ot(ound1xce"tion%

importHava#io#(ile3ut"ut,tream%

importHava#io#+31xce"tion%


importandroid#os#1nvironment%






importandroid#widget#TextView%

publicclassMain extends&ctivity )

publicTextView t%

private1ditText ed%

private'utton b%

public,tring in"ut%

G3verride



setontentView*.#layout#main-%

t=*TextView- $indView'y+d*.#id#te$t%iew1-%

ed=*1ditText- $indView'y+d*.#id#edit2e$t1-%

b=*'utton- $indView'y+d*.#id#button1-%

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SL-MC(650017) b#set3nlickListener*newView#3nlickListener*- )

G3verride


(ile sdcard=1nvironment#get*$ternaltorage;irector#*-%

if*sdcard#exists*- 55 sdcard#canrite*--

)

(ile udir=new(ile*sdcard#get&bsolute0ath*-4!android,tring(ile4-%

udir#mkdir*-%

if*udir#exists*- 55 udir#canrite*--

)

(ile $ile=new(ile*udir#get&bsolute0ath*-4!my,tring#txt4-%

try

)

$ile#create;ew(ile*-%

/

catch*+31xce"tion e-

)

e#"rint,tackTrace*-%

/

if*$ile#exists*- 55 $ile#canrite*--

)

(ile3ut"ut,tream $os=null%

try

)

$os=new(ile3ut"ut,tream*$ile-%

in"ut=ed#getText*-#to,tring*-%

$os#write*in"ut#get'ytes*--%

/

catch*(ile;ot(ound1xce"tion e-

)

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SL-MC(650017)e#"rint,tackTrace*-%

/


)


/

finally

)

if*$os@=null-

)

try

)

$os#$lush*-%

$os#close*-%

/


)


/

/

/

/

else

)

t#setText*4unable to write4-%

/

/

else

)

t#setText*4unable to create $ile4-%

/

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SL-MC(650017)/

else

)

t#setText*4unable to create dir4-%

/

(ile r$ile=new(ile*4!sdcard!android,tring(ile!my,tring#txt4 -%

if*r$ile#exists*- 55 r$ile#can.ead*--

)

(ile+n"ut,tream $is=null%

try

)

$is=new(ile+n"ut,tream*r$ile-%

byteK readers=newbyteK$is#available*-%

while*$is#read*readers-@=D6-

)

/

t#setText*new,tring*readers--%

/

catch*(ile;ot(ound1xce"tion e-

)


/


)


/

finally

)

if*$is@=null-

)

try

)

$is#close*-%

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SL-MC(650017)/


)


/

/

/

/

else

)

t#setText*4unable to read $ile4-%

/

/

/-%

/

G3verride

publicbooleanonreate3"tionsMenu*Menu menu- )

getMenu+n$later*-#in$late*.#menu#main menu-%

returntrue%

/

/

Main.xml


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SL-MC(650017) android:id="@!id/edit2e$t1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:ems="10">


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Exercise : 2/Create an application to draw line on the screen as user drag his finger.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

!entyActivity.java :

package"gi#Twenty%importandroid#a""#&ctivity%importandroid#os#'undle%

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SL-MC(650017)publicclassTwenty&ctivity extends&ctivity)


super#onreate*saved+nstance,tate-%super#onreate*saved+nstance,tate-%

setontentView*new1x"loreTouch1vent*this null--%/

/

Ex0lore!o#chEvent.java :

package"gi#Twenty%importandroid#content#ontext%importandroid#gra"hics#anvas%importandroid#gra"hics#olor%importandroid#gra"hics#0aint%importandroid#gra"hics#0ath%importandroid#util#&ttribute,et%importandroid#view#Motion1vent%importandroid#view#View%publicclass1x"loreTouch1vent extendsView)

private0aint "aint= new0aint*-%private0ath "ath= new0ath*-%public1x"loreTouch1vent*ontext context &ttribute,et attrs-)

super*context attrs-%"aint#set&nti&lias*true-%"aint#set,trokeidth*$-%"aint#setolor*olor#=472*-%

"aint#set,tyle*0aint#,tyle#25E*-%"aint#set,trokeWoin*0aint#Woin#5,;-%

/protectedvoidonFraw*anvas canvas-)

canvas#drawolor*olor#>,*-%canvas#draw0ath*"ath "aint-%

/publicbooleanonTouch1vent*Motion1vent event-)

floateventO = event#getO*-%floateventJ = event#getJ*-%

switch*event#get&ction*--)

caseMotion1vent#'275_;5=:"ath#moveTo*eventO eventJ-%returntrue%

caseMotion1vent#'275_95%*:"ath#lineTo*eventO eventJ-%break%

caseMotion1vent#'275_,:!! nothing to dobreak%

default:returnfalse%

/!! ,chedules a re"aint#

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SL-MC(650017)invalidate*-%returntrue%

//

Exercise : 21

Create an application to send message between two emulators.Screen Shot:

Main$ctivity.java

packagecom#"gi#smsbook%



importandroid#a""#0ending+ntent%

import android#content#'roadcast.eceiver%

importandroid#content#ontext%

importandroid#content#+ntent%

importandroid#content#+ntent(ilter%

importandroid#tele"hony#,msManager%

importandroid#tele"hony#,msMessage%

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SL-MC(650017)importandroid#util#Log%





importandroid#widget#TextView%


'roadcast.eceiver rcvMsg,ent=null%

'roadcast.eceiver rcvMsg.ecei"t=null%

'roadcast.eceiver rcv+ncoming=null%

G3verride




final1ditText message=*1ditText- $indView'y+d*.#id#edit2e$t-%

final1ditText number=*1ditText- $indView'y+d*.#id#edit2e$t1-%

final,msManager sms=,msManager#get;efault*-%

+ntent msg,ent=new+ntent*4&T+3;_M,_,1;T4-%

+ntent msg.ecei"t=new+ntent*4&T+3;_M,_.11+0T4-%

final0ending+ntent "msg,ent=0ending+ntent#get>roadcast*this

Bmsg,entB-%

final0ending+ntent "msg.ecei"t=0ending+ntent#get>roadcast*this

Bmsg.ecei"tB-%

'utton sent,ms=*'utton- $indView'y+d*.#id#button1-%

sent,ms#set3nlickListener*newView#3nlickListener*- )

G3verride


,tring destination=number#getText*-#to,tring*-%

,tring msg=message#getText*-#to,tring*-%

sms#sendTextMessage*destination nullmsg"msg,ent"msg.ecei"t-%

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SL-MC(650017)!! TODO&utoDgenerated method stub

if*rcvMsg,ent@=null-

)

unregister.eceiver*rcvMsg,ent-%

rcvMsg,ent=null%

/

rcvMsg,ent=new'roadcast.eceiver*- )

G3verride

publicvoidon.eceive*ontext argB +ntentarg6- )


intresult=get.esultode*-%

if*result@=&ctivity#*,2_5E-

)

Log#e*4tele"hony44sms send$ailed=4result-%

"msg.ecei"t#cancel*-%

/

else

)

Log#i*4tele"hony44sms messgesent###4-%

message#setText*44-%

/

/

/%

register.eceiver*rcvMsg,entnew+ntent(ilter*4&T+3;_M,_,1;T4--%

/

/-%

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SL-MC(650017) finalTextView rmsg=*TextView- $indView'y+d*.#id#te$t%iew1-%

rcv+ncoming=new'roadcast.eceiver*- )

G3verride

publicvoidon.eceive*ontext argB +ntent intent- )


Log#i*4tele"hony44sms received4-%

'undle data=intent#get1xtras*-%

if*data@=null-

)

3bHect "dusK=*3bHectK- data#get*4"dus4-%

,tring message=4;ew Message:Qn4%

,tring sender=null%

for*3bHect "du : "dus-

)

,msMessage"art=,msMessage#create6romdu**byteK-"du-%

message="art#getFis"layMessage'ody*-%

if*sender==null-

)

sender="art#getFis"lay3riginating&ddress*-%

/

/

rmsg#setText*message4$romQn4 sender-%

number#setText*sender-%

/

/

/%

register.eceiver*rcv+ncoming new+ntent(ilter*4android#"rovider#Tele"hony#,M,_.11+V1F4 --%

/

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SL-MC(650017)

G3verride

publicbooleanonreate3"tionsMenu*Menu menu- )

getMenu+n$later*-#in$late*.#menu#actiit#_main menu-%

returntrue%

/

/

Main.xml:

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SL-MC(650017)


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SL-MC(650017) android:label="@string/title_actiit#_main">

Ste0 to ,reat to em#lator and send sms.

17)oto indos96Android S3 and AV3 Man)aer.

27creat to em#lator and )ive the di%%erent name.

7start em#lator 4y clic8in) start 4#tton

7no enter the em#lator n#m4er to 0hone n#m4er and send it.

ote:9 see the )ive *#t;#t ma)e..

Enjoy.........

Exercise : 22Create an application to take picture using native application.

Screen Shot:

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SL-MC(650017)

XML :

main.xml :

JAVA :

!enty!oActivity.java :

package"gi#TwentyTwo%

importHava#io#(ile%

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SL-MC(650017)importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#net#Eri%importandroid#os#'undle%importandroid#os#1nvironment%importandroid#"rovider#Media,tore%

publicclassTwentyTwo&ctivity extends&ctivity) ,tring "ath%


) super#onreate*saved+nstance,tate-% setontentView*.#layout#main-% "ath= 1nvironment#get*$ternaltorage;irector#*- (ile#separator4make_machine_exam"le#H"g4% (ile $ile = new(ile* "ath-% Eri out"ut(ileEri = Eri#from6ile* $ile -%

+ntent intent = new+ntent*android#"rovider#Media,tore# '275_79'3*_'2,*-% intent#"ut1xtra* Media,tore#*B2'_5,2,2 out"ut(ileEri -%

start&ctivity(or.esult* intent B -%

//

Exercise : 2Create an application to pick up any image from the native application gallery anddisplay it on the screen.

Main.xml:

Manifest.xml:

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SL-MC(650017)

Main$ctivity.java:

packagecom#imgmry#imagememoery%

importandroid#net#Eri%

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SL-MC(650017)importandroid#os#'undle%

importandroid#"rovider#Media,tore%


importandroid#content#ontext%

importandroid#database#ursor%



importandroid#view#Viewrou"%

importandroid#widget#'ase&da"ter%

importandroid#widget#ridView%

importandroid#widget#+mageView%


privateursor cursor%

privateridView sdcardimg%

privateintcindex%

G3verride




,tring "roHectionK=)Media,tore#+mages#Thumbnails#_7;/%

cursor=this#getontent.esolver*-#2uery*Media,tore#+mages#Media# *B2*'_52*2_,7nullnullnullnull-%

startManagingursor*cursor-%

cindex=cursor#getolumn+ndex3rThrow*Media,tore#+mages#Thumbnails#_7;-%

sdcardimg=*ridView- $indView'y+d*.#id#grid%iew1-%

sdcardimg#set&da"ter*new+mage&da"ter*this--%

/

privateclass+mage&da"ter extends'ase&da"ter

)

privateontext context%

public+mage&da"ter*ontext c-

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SL-MC(650017) )

context=c%

/

G3verride

publicintgetount*- )


returncursor#getount*-%

/

G3verride

public3bHect get+tem*int"osition- )


return"osition%

/

G3verride

publiclongget+tem+d*int"osition- )


return"osition%

/

G3verride

publicView getView*int"osition View convertView Viewrou""arent- )

+mageView "icview%

if*convertView==null-

)

"icview=new+mageView*context-%

cursor#moveTo0osition*"osition-%

intimgid=cursor#get+nt*cindex-%

"icview#set+mageE.+*Eri#with'ppendedath*Media,tore#+mages#Thumbnails# *B2*'_52*2_,744imgid--%

"icview#set,caleTy"e*+mageView#,caleTy"e# 672_*2*-%

"icview#set0adding*PPPP-%

!!"icview#setLayout0arams*new ridView#-

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SL-MC(650017)

/

else

)

"icview=*+mageView- convertView%

/


return"icview%

/

/

/

Ste0 !o store ima)es on sdcard and scannin) in to the em#lator.

17clic8 on 0#sh on %ile onto the device 4#tton

27no select the iam)e an #0load it

7)oto the


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SL-MC(650017)android:layout_width="fill_parent"

android:layout_height="fill_parent"xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="ertical"android:gravity="center"android:"adding="10p$"android:background="@color/bgcolor">

JAVA :

!entyFo#rActivity.java :

packagecom#"gi#Twenty(our%importandroid#net#Eri%importandroid#os#'undle%importandroid#a""#&ctivity%importandroid#content#+ntent%importandroid#view#Menu%importandroid#webkit#ebView%

publicclassTwenty(our&ctivity extends&ctivity) G3verride



setontentView*.#layout#main-%+ntent brower+ntent=new+ntent*+ntent#'275_%7*=Eri#parse*4htt":!!www#google#co#in4--% start&ctivity*brower+ntent-%

//

Manifest.xml:

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SL-MC(650017)

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Practical Android