ANDROID

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AndroidAndroid RuntimeThis is the third section of the architecture and available on the second layerfrom the bottom. This section provides a key component called Dalvik VirtualMachine which is a kind of Java Virtual Machine specially designed andoptimized for Android.The Dalvik VM makes use of Linux core features like memory management andmulti-threading, which is intrinsic in the Java language. The Dalvik VM enablesevery Android application to run in its own process, with its own instance of theDalvik virtual machine.The Android runtime also provides a set of core libraries which enable Androidapplication developers to write Android applications using standard Javaprogramming language.Application FrameworkThe Application Framework layer provides many higher-level services toapplications in the form of Java classes. Application developers are allowed tomake use of these services in their applications.ApplicationsYou will find all the Android application at the top layer. You will write yourapplication to be installed on this layer only. Examples of such applications areContacts Books, Browser, Games, etc.12
Android4. APPLICATIONS COMPONENTApplication components are the essential building blocks of an Androidapplication. These components are loosely coupled by the application manifestfile AndroidManifest.xml that describes each component of the application andhow they interact.There are following four main components that can be used within an Androidapplication:ComponentsDescriptionActivitiesThey dictate the UI and handle the user interaction tothe smartphone screenServicesThey handle background processing associated with anapplication.Broadcast Receivers They handle communication between Android OS andapplications.Content ProvidersThey handle data and database management issues.ActivitiesAn activity represents a single screen with a user interface. For example, anemail application might have one activity that shows a list of new emails,another activity to compose an email, and one for reading emails. If anapplication has more than one activity, then one of them should be marked asthe activity that is presented when the application is launched.An activity is implemented as a subclass of Activity class as follows:public class MainActivity extends Activity{}13
Page 1 and 2: Cover page
Page 3 and 4: Table of ContentsAbout the Tutorial
Page 5 and 6: Content URIs ···········
Page 7 and 8: 20. NOTIFICATIONS ········
Page 9 and 10: 36. DATA BACKUP ·········
Page 11 and 12: Installing python·········
Page 13 and 14: 62. SCREEN CAST ·········
Page 15 and 16: Understanding Screen Components ·
Page 17 and 18: 1. OVERVIEWAndroidWhat is Android?A
Page 19 and 20: Androidand is growing fast. Every d
Page 21 and 22: Androidsetenv PATH /usr/local/jdk1.
Page 23 and 24: AndroidAfter a successful startup,
Page 25 and 26: AndroidNow select all the listed pl
Page 27: 3. ARCHITECTUREAndroidAndroid opera
Page 31 and 32: Android}We will go through these ta
Page 33 and 34: AndroidAnatomy of Android Applicati
Page 35 and 36: Androidresources found in your proj
Page 37 and 38: Android<activityandroid:name=".Main
Page 39 and 40: Android}}public static final class
Page 41 and 42: AndroidCongratulations! You have de
Page 43 and 44: Androidcolor/XML files that define
Page 45 and 46: AndroidBelow is another example whi
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Page 49 and 50: Androiduser.onResume()This is calle
Page 51 and 52: Android}super.onPause();Log.d(msg,
Page 53 and 54: AndroidLet us try to click Red butt
Page 55 and 56: AndroidTo create a service, you cre
Page 57 and 58: Android/** Called when the service
Page 59 and 60: Androidpackage com.example.hellowor
Page 61 and 62: Androidandroid:minSdkVersion="8"and
Page 63 and 64: AndroidNow to start your service, l
Page 65 and 66: 9. BROADCAST RECEIVERSAndroidBroadc
Page 67 and 68: Androidby the data.android.intent.a
Page 69 and 70: Androidimport android.os.Bundle;imp
Page 71 and 72: Android<receiver android:name="MyRe
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Page 75 and 76: Androidauthority This specifies the
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Androidimport android.content.Conte
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Android}}@Overridepublic boolean on
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Androidint count = 0;switch (uriMat
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Androidandroid:versionCode="1"andro
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Android<string name="action_setting
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AndroidYou can write activities aga
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AndroidThe application can embed tw
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AndroidCorresponding to each fragme
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Android}* Check the device orientat
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AndroidFollowing is the content of
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Android<string name="app_name">MyFr
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12. INTENTS & FILTERSAndroidAn Andr
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Android5 ACTION_EDIT content://cont
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AndroidFollowing example shows the
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Androidandroid:orientation="vertica
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AndroidNow click on Start Browser b
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AndroidExample:Following example is
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Android// Third intent to use LAUNC
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Android</LinearLayout>Following wil
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AndroidLet's try to run your Intent
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AndroidNow go back using back butto
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AndroidOnce your layout is defined,
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Androidandroid:paddingLeftThis is t
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AndroidFollowing is a brief descrip
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Android1 TextViewThis control is us
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15. EVENT HANDLINGAndroidEvents are
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AndroidBut if you have applied the
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Android}}Following will be the cont
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Android/></intent-filter></activity
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Android//--- find both the buttons-
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AndroidFollowing are the simple ste
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17. STYLES & THEMESAndroidIf you al
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AndroidStyle InheritanceAndroid sup
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AndroidAndroid Styles (styles.xml)A
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Android}}super(context, attrs, defS
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AndroidCustom Component with Custom
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Androidandroid:paddingTop="@dimen/a
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AndroidEnded: Just after the action
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AndroidThe combination of the onDra
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Android@Overridepublic boolean onLo
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Android<?xml version="1.0" encoding
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AndroidNow do long click on the dis
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AndroidCreate and Send Notification
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AndroidS.N. Constants & Description
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Android3 Create a new Java file src
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AndroidNotificationCompat.Builder m
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AndroidPendingIntent resultPendingI
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Android</LinearLayout>Following wil
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AndroidNow click Start Notification
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Android/* Increase notification num
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Android21. LOCATION-BASED SERVICESA
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Android18 void setSpeed(float speed
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Android5 setNumUpdates(int numUpdat
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Android3 Modify src/MainActivity.ja
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Android@Overrideprotected void onCr
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AndroidDouble.toString(currentLocat
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Android}address.getAddressLine(0) :
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Androidandroid:minSdkVersion="8"and
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AndroidYou can try by disconnecting
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AndroidA String[] holding e-mail ad
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AndroidYou can modify either of the
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AndroidArrayList<PendingIntent> sen
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Android}protected void sendSMSMessa
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AndroidFollowing will be the conten
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AndroidSelect your mobile device as
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Android5 Modify AndroidManifest.xml
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24. PHONE CALLSAndroidAs such every
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Androidandroid:versionCode="1"andro
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Android211
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Androidautomatically handle the dow
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AndroidEnter your password to prote
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AndroidFinally, you click on Finish
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26. ALERT DIALOG TUTORIALAndroidSom
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Androidres/layout/activity_positive
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Android}public boolean onCreateOpti
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Android<string name="app_name">Aler
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Android229
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AndroidNow just tap the button hell
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AndroidNow press back button on you
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Android5 cancel()This method cancel
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Androidimport android.view.MenuItem
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Androidandroid:id="@+id/imageView1"
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Androidandroid:interpolator="@andro
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Androidandroid:label="@string/app_n
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AndroidNow just select the Zoom in,
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AndroidNow just select the fade in/
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Android4 setAudioEncoder()This meth
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AndroidmyAudioRecorder = new MediaR
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Androidtools:context=".MainActivity
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Android</resources>Here is the cont
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AndroidNow just press stop button a
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29. AUDIO MANAGERAndroidYou can eas
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Androidcreating this project, make
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Android}else{}}@Overridepublic bool
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Android<Buttonandroid:id="@+id/butt
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AndroidLet's try to run your Androi
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AndroidNow just select the ring but
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AndroidNow press the vibrate button
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AndroidSr.NoMethod & description1 g
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AndroidsetContentView(R.layout.acti
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Androidandroid:layout_alignParentLe
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Android</manifest>Let's try to run
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AndroidThe multiAutoCompleteTextVie
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AndroidBest Practices - Performance
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Android}setContentView(R.layout.act
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Androidandroid:layout_height="wrap_
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Androidandroid:allowBackup="true"an
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AndroidNow you will see the hint in
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32. BLUETOOTHAndroidAmong many ways
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AndroidSteps Description1 You will
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AndroidToast.LENGTH_LONG).show();}}
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Androidandroid:text="@string/app_na
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Android<uses-permission android:nam
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AndroidNow just select the Get Visi
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AndroidNow just select the Turn off
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AndroidIt is used to specify the si
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Androidpublic class MainActivity ex
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Androidandroid:textAppearance="?and
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AndroidJust press the tic (green) b
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Androidprivate Camera theCamera;}pu
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Androidimport android.graphics.Bitm
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Android}}Create the new java file c
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Androidandroid:onClick="snapIt"andr
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34. CLIPBOARDAndroidAndroid provide
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AndroidThis method sets the current
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Android}Toast.LENGTH_SHORT).show();
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Androidandroid:id="@+id/button1"and
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Android</activity></application></m
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AndroidNow just press the paste but
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Android4 defaultFromStyle(int style
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Android<TextViewandroid:id="@+id/he
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AndroidAs you can see that the text
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AndroidThe last thing you need to d
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Androidpackage="com.example.backup"
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Androidadb shell bmgr enable trueIf
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Androidcode.7 sqlite3Lets you acces
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AndroidMaking CallIn the DDMS, sele
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AndroidNow click on hang-up in the
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AndroidUsing Sqlite3 directlyCopy a
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AndroidOnce it is launched, press C
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AndroidRing Volume downEmulator - S
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AndroidEmulator - Transferring file
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AndroidRegistering your application
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AndroidNext thing you need is to de
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Androidimport android.view.View;imp
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AndroidNow just tap on the image lo
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AndroidNow just select the post but
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AndroidScaleGestureDetector SGD;SGD
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Androidimport android.os.Bundle;imp
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Androidandroid:layout_width="match_
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Android391
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AndroidNow just place two fingers o
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41. GOOGLE MAPSAndroidAndroid allow
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AndroidEnable/Disable zoomYou can a
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AndroidDownload and configure. Goog
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AndroidCopy the SHA1 key because yo
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AndroidMarker TP = googleMap.addMar
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Android<activityandroid:name="com.e
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AndroidNow what you need to do is t
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AndroidThis method copy this bitmap
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Androidprivate Bitmap operation;@Ov
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Androidfor(int j=0; j<bmp.getHeight
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Androidandroid:layout_height="wrap_
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AndroidLet's try to run our Image E
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AndroidNow tap on the bright button
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43. IMAGE SWITCHERAndroidSometimes
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AndroidExample:The below example de
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AndroidAnimation out = AnimationUti
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Android</RelativeLayout>Following i
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AndroidNow if you will look at your
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44. INTERNAL STORAGEAndroidAndroid
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Androidwith this stream.3 getFD()Th
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AndroidToast.LENGTH_SHORT).show();}
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Androidandroid:id="@+id/editText1"a
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AndroidLet's try to run our Storage
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AndroidNow when you press the load
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AndroidCloses the resource containi
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AndroidOnce in the folder, type thi
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AndroidJetPlayer jetPlayer = JetPla
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AndroidJSON - ElementsA JSON file c
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Android}}Following is the content o
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Android}}public void fetchJSON(){Th
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Android<TextViewandroid:id="@+id/te
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Android<EditTextandroid:id="@+id/ed
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AndroidLet's try to run our JSONPar
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47. LINKEDIN INTEGRATIONAndroidAndr
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AndroidSr.NoMethod & description1 a
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AndroidNow just select LinkedIn fro
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Android3 setIndeterminate(boolean i
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Android<RelativeLayoutxmlns:android
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49. LOCALIZATIONAndroidAn android a
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Android7 FrenchCode: fr. Folder nam
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AndroidLet's try to run our Localiz
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50. LOGIN SCREENAndroidA login appl
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Android5 Modify the res/values/stri
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AndroidFollowing is the modified co
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Androidandroid:layout_centerHorizon
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AndroidLet's try to run our Login a
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AndroidDo this two more time, and y
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51. MEDIA PLAYERAndroidAndroid prov
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AndroidToast.LENGTH_SHORT).show();m
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Android}Toast.makeText(getApplicati
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Androidandroid:src="@android:drawab
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Android<?xml version="1.0" encoding
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AndroidUptill now, the music has be
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52. MULTITOUCHAndroidMulti-touch ge
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Android7 getXPrecision()This method
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Android}case MotionEvent.ACTION_MOV
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Androidandroid:layout_alignLeft="@+
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Android<manifest xmlns:android="htt
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AndroidYou will see that the data i
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AndroidIt can be done by overriding
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Android<RelativeLayoutxmlns:android
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Android</resources>Here is the cont
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AndroidNow just press the go to act
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AndroidNow again go to activity2 an
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Android2 Disconnected3 Disconnectin
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Android3 Create src/DownloadWebPage
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Androidimport android.widget.Toast;
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AndroidHere is the content of activ
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AndroidHere is the content of Andro
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AndroidNow press the Download WebPa
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Android<uses-sdk android:minSdkVers
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56. PHP/MYSQLAndroidHere, in this c
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Android$data = $row[0];if($data){ec
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Androidecho $data;}mysqli_close($co
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Androidpublic void loginPost(View v
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Androidbreak;}in.close();return sb.
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Android</EditText><EditTextandroid:
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Android<string name="Choose">Choose
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AndroidNow press the Get button, wa
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57. PROGRESS CIRCLEAndroidThe easie
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Androidimport android.os.Bundle;imp
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AndroidLet's try to run your Progre
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AndroidJust press the button to sta
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AndroidThis method is used to updat
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Androidsleep(200);jumpTime += 5;pro
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AndroidThis is the default AndroidM
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AndroidIt will continuously update
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AndroidSr.NoMethod & description1 c
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Androidpublic boolean onCreateOptio
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Androidandroid:layout_width="wrap_c
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Android<applicationandroid:allowBac
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AndroidNow click on the notify butt
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60. RENDERSCRIPTAndroidThis chapter
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AndroidSr.NoAPIs1 android.renderscr
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61. RSS READERAndroidRSS stands for
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AndroidThe method getEventType retu
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Android}public String getTitle(){re
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Android}}}});thread.start();Modify
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AndroidLet's try to run your RSSRea
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62. SCREEN CASTAndroidAndroid Scree
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AndroidIf everything work fine, you
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63. SDK MANAGERAndroidTo download a
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AndroidJust Enter the proxy and run
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64. SENSORSAndroidMost of the andro
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Androidmatrix.7 getAltitude(float p
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Android}}Following is the modified
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65. SESSION MANAGEMENTAndroidSessio
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Android3 Create New Activity and it
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Androidpublic boolean onCreateOptio
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Androidandroid:layout_below="@+id/t
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AndroidType in your username and pa
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AndroidNow click on Exit without lo
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AndroidNow click on logout button,
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Android4 SipProfileDefines a SIP pr
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67. SPELLING CHECKERAndroidThe Andr
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Androidyou Target SDK and Compile W
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Android3);}@Overridepublic void onG
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AndroidNow what you need to do is t
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68. SQLITE DATABASEAndroidSQLite is
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AndroidThere are other functions av
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Android10 Run the application and c
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Android@Overridepublic boolean onOp
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Androidmydb = new DBHelper(this);Bu
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Android}public boolean onOptionsIte
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Android}}}int Value = extras.getInt
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Android@Overridepublic void onCreat
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AndroidArrayList array_list = new A
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Androidandroid:layout_alignBaseline
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Android<menu xmlns:android="http://
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AndroidIt will display the followin
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AndroidNow our contact john has bee
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AndroidSelect Yes from the above sc
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Android4 v13 Support LibraryThis li
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70. TESTINGAndroidThe Android frame
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AndroidMonkeyThe UI/Application Exe
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Androidpublic void activity1(View v
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Androidandroid:id="@+id/button1"and
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Android6 CHINAOnce you have set the
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Androidprivate EditText write;@Over
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Androidandroid:layout_marginBottom=
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AndroidLet's try to run your TextTo
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AndroidNow just type some text in t
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72. TEXTURE VIEWAndroidIf you want
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AndroidExampleThe below example dem
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Android}} catch (IOException t) {}m
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AndroidThis screen has alpha proper
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73. TWITTER INTEGRATIONAndroidAndro
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AndroidIf everything works fine, yo
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AndroidExampleHere is an example de
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Android}}Following is the modified
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Android<intent-filter><action andro
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AndroidNow just tap on the image lo
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74. UI DESIGNAndroidWe will look at
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AndroidAbsoluteLayoutThe AbsoluteLa
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AndroidSpecifies the height of the
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75. UI PATTERNSAndroidThis chapter
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AndroidAcknowledgingWhen we display
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76. UI TESTINGAndroidAndroid SDK pr
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AndroidAfter that, you will see the
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AndroiduiautomatorNow you can creat
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Androidimport android.view.Menu;imp
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AndroidHere is the content of Andro
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77. WEBVIEWAndroidWebView is a view
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Android}return true;}Following is t
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Android<uses-sdkandroid:minSdkVersi
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78. WI-FIAndroidAndroid allows appl
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AndroidTo experiment with this exam
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Androidfor(int i = 0; i < wifiScanL
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Androidandroid:name="com.example.wi
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79. WIDGETSAndroidA widget is a sma
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AndroidExampleHere is an example de
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AndroidFollowing is the modified co
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Android<applicationandroid:allowBac
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AndroidNow just tap on the widget b
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80. XML PARSERAndroidXML stands for
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Android}break;}}event = myParser.ne
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Android7 Run the application and ch
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Androidhumidity = myParser.getAttri
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Android<EditTextandroid:id="@+id/ed
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Androidandroid:label="@string/app_n
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AndroidNow when you press the weath
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