Android workshop
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This document is a lecture by Nikola Kapraljevi? on Android development, covering topics such as the Android operating system architecture, application framework, and common development practices. It includes examples of building user interfaces, managing application components, and utilizing intents for communication between activities. Additionally, it touches on application distribution and market considerations for developers.
Android workshop
- 1. Android predavanje Nikola Kapraljevi?, In?num Java te?aj 22.06.2012, FER
- 2. Nikola Kapraljevi? twitter@nixa nikola@in?num.hr Android Ruby on Rails iPhone
- 3. Android OS
- 4. Android OS koristi se za tablet i smartphone ure?aje trenutno postoji preko 300 razli?itih telefona 900 000 novih ure?aja se aktivira dnevno 330 000 000 ure?aja je trenutno aktivno
- 7. HTC Sense
- 10. Sony Ericsson UX
- 12. Android 4.0
- 13. Open source...
- 15. Android OS Linux based OS no NIJE Linux nema glibc nema X11 nema kon?guracijske datoteke koje o?ekujemo nema ni sve alate koji dolaze s Linuxom
- 16. Application Framework Activity Manager Resource Manager Window Manager Location Manager Content Providers Noti?cation Manager View System Package Manager Telephony Manager
- 17. Dalvik VM virtual machine koji izvr?ava Dalvik byte-code sli?no JVM, no nije JVM Java se kompajlira u .dex datoteke svaka aplikacija se izvr?ava u vlastitom sandboxu i na vlastitoj instanci VM-a Java SE 5
- 18. Applications uz OS dolazi i odre?eni set aplikacija SMS Calendar Browser (Webkit) Contacts ....
- 20. Razli?ite rezolucije/orijentacije res/layout/main_activity.xml # For handsets res/layout-land/main_activity.xml # For landscape handsets res/layout-sw600dp/main_activity.xml # For tablets
- 21. Dashboard most of the apps
- 22. Side navigation
- 24. UI
- 25. layout.xml de?niranje su?elja koriste?i XML android:id="@+id/my_button¡± mogu?e u?itavanje on runtime pomocu LayoutIn?ater servicea super.onCreate(savedInstanceState); setContentView(R.layout.main_layout);
- 26. Button <Button android:id="@+id/my_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/my_button_text"/>
- 27. View system
- 29. Android Widget Toolbox TextView RadioButton EditText http:// developer.android.co ListView m/guide/tutorials/ Spinner views/index.html Button CheckBox
- 32. Custom Components Extend an existing View class or subclass with your own class. Override some of the methods from the superclass. The superclass methods to override start with 'on', for example, onDraw(), onMeasure(), and onKeyDown(). This is similar to the on... events in Activity or ListActivity that you override for lifecycle and other functionality hooks. Use your new extension class. Once completed, your new extension class can be used in place of the view upon which it was based. example: extend ImageView and add some rounded border http://developer.android.com/guide/topics/ui/custom- components.html
- 36. strings.xml
- 38. R.java pointers from java to resources
- 41. Android Emulator napraviti ?emo novi AVD, koristite x86 ako mozete
- 43. ~/.android/avd
- 44. DDMS perspective pozivi, sms, network speed
- 45. Pokretanje aplikacije compiling, signing, deploying, running
- 46. ANT building from command line android update project -p . ant help :)
- 48. Command line install adb install bin/Workshop.apk adb uninstall com.in?num.workshop
- 51. Android Intents Intents are used as a message-passing mechanism that works both within your application, and between applications. Declare your intention that an Activity or Service be started to perform an action, usually with (or on) a particular piece of data Broadcast that an event (or action) has occurred
- 52. Explicit intents startActivity Intent intent = new Intent(this, MyActivity.class); startActivity(intent); startActivityForResults Intent intent = new Intent(this, MyActivity.class); startActivity(intent);
- 53. Implicit intents trazimo od OS-a da izabere pomocu cega ce izvrsiti Intent Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(¡®tel: 0959115614¡¯); startActivity(intent);
- 54. DetailsActivity example prenosenje i vracanje parametara s activitya na activity
- 55. Broadcasts Broadcasting intents napravite intent i pozoveze nad njim sendBroadcast(intent); Receiving intents extend BroadcastReceiver register in android manifest <receiver android:name=".MyBroadcastReciver"> <intent-?lter> <action android:name="hr.in?num.fer.LECTURE_DONE"/> </intent-?lter> </receiver>
- 57. String url = "tel:0959115614"; Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
- 59. Mo?emo li znati kad je poziv gotov?
- 60. public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btnCall = (Button) ?ndViewById(R.id.btnCall); btnCall.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:0917700")); startActivity(intent); } }); TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE); tm.listen(new EndCallListener(), PhoneStateListener.LISTEN_CALL_STATE); } private class EndCallListener extends PhoneStateListener { @Override public void onCallStateChanged(int state, String incomingNumber) { Log.d("NIXA", "Phone state is " + state + " " + incomingNumber); } }
- 61. Permissions <uses-permission android:name="android.permission.READ_PHONE _STATE"></uses-permission>
- 62. ListView
- 64. ListView example
- 65. Storage Shared Preferences Internal Storage External Storage SQLite Databases Network Connection
- 66. Media and Camera take photo record video pick photo/video from gallery MediaStore.ACTION_IMAGE_CAPTURE MediaStore.ACTION_VIDEO_CAPTURE
- 67. Camera example
- 68. Paziti na Low processing power Limited RAM Limited permanent storage capacity Small screens with low resolution High costs associated with data transfer Slow data transfer rates with high latency Unreliable data connections Limited battery life
- 72. Flurry ako vas zanima tko i kako koristi aplikaciju
- 73. AdMob ako hocete nesto zaraditi, ali vjerovatno necete
- 74. Android Market
- 75. Android Market Developer Console pratite komentare exceptioni Active Install Rate
- 76. Android Market 25$ account kad krenete razvijati applikaciju nije lo?e uploadat ju odmah na po?etku developmenta kako bi si rezervirali namespace (hr.in?num.nixa...) ¡°od sljede?eg tjedna izgleda da ?emo mo?i kupovati/prodavati aplikacije i iz Hrvatske¡± DORS/CLUC 2011 - ovo jos uvijek ne radi :-)
- 77. Lamborgini Aventador 700hp V12, 2.9s do 100km/h
- 78. Pitanja ...
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- #42: - neke stvari se mogu emulirati no ne sve\n- recimo emuliranje kamere, telefonskih poziva i slicno radi\n- ne moze se emulirati sensore, slobodno pokusajte tresti laptop, ali ne moj!\n- network bandwidth se moze mijenjati\n
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- #44: pokazati ini file\ngdje se nalazi SD kartica i slicno\nmksdcard za napraviti karticu rucno\nprilikom stvaranja AVD-a mozemo izabrati ili velicinu ili datoteku\n
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- #49: radi deployment na emulator ili na uredjan no brine se za transfer i instalaciju na ciljanom uredaju\n
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