반복적인 작업이 싫은 안드로이드 개발자에게

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1 진성주

발표자소개 진성주 ( @geekbeast ) Blog : http://softwaregeeks.

2 발표자소개 진성주 ) Blog : 안드로이드프로그래밍 : 제대로된안드로이드앱개발을위한진성주, 최종열, 백정현, 신중훈 ( 공저 )

17 Motivation

18 Motivation

19 Motivation 짜증나는안드로이드반복적인작업 1. UI 매핑 (findviewbyid) 2. 파라미터처리 (getintent().getextras() ) 3. 비동기처리 (Async) 4. REST 통신 ( Http )

20 Motivation 1. UI 매핑 TextView subject = (TextView) findviewbyid(r.id.subject); TextView writer = (TextView) findviewbyid(r.id.writer); TextView date = (TextView) findviewbyid(r.id.date); TextView hit = (TextView) TextView TextView TextView TextView hit;

21 Motivation 2. 파라미터처리 String id = intent.getstringextra("id"); String name = intent.getstringextra( name"); String nickname = intent.getstringextra( nickname"); Int sex = intent.getintextra( sex,0); Object object = id") String name") String nickname") String sex") int object") Object object;

22 Motivation 3. 비동기처리 private class DownloadFilesTask extends AsyncTask<URL, Integer, Long> { void protected backgroudjob() Long doinbackground(url... { urls) { MovieContents int count = moviecontents urls.length; = daummovieservice.getmoviecontents("love"); String long result totalsize = moviecontents.getquery(); = 0; setdata(result); for (int i = 0; i < count; i++) { } totalsize += Downloader.downloadFile(urls[i]); publishprogress((int) ((i / (float) count) * } void setdata(string return totalsize; data) { textview.settext(data); } } protected void onprogressupdate(integer... progress) {

23 Motivation 4. REST 통신 InputStream download(string url) { public HttpURLConnection interface DaumMovieService con = null; { url; ut=xml&q={query}") InputStream is=null; public MovieContents getmoviecontents(string query); try { } url = new URL(url); con = (HttpURLConnection) url.openconnection(); con.setreadtimeout(10000 /* milliseconds */); con.setconnecttimeout(15000 /* milliseconds */); con.setrequestmethod("get"); con.setdoinput(true);

26 목표 반복적인코드를줄일수있는 오픈소스 (RoboGuice, AndroidAnnotations) 써보세요 ~

27 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

28 01 Reflection, Annotation 발표자료

29 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

30 01 Reflection, Annotation Reflection 1. ( 거울등에비친 ) 상 2. ( 빛 열 소리등의 ) 반사, 반향 3. ( 상태 속성등의 ) 반영 클래스모습을자신이볼수있고, 수정할수도있는기술

31 01 Reflection, Annotation 이클립스자동완성 (Ctrl+Space)

32 01 Reflection, Annotation JDBC Programming Class.forName("oracle.jdbc.driver.OracleDriver"); Connection conn = DriverManager.getConnection Statement stmt = conn.createstatement(); ResultSet rs = stmt.executequery(

33 01 Reflection, Annotation 웹어플리케이션 web.xml <servlet> <servlet-name>action</servlet-name> <servlet-class> org.softwaregeeks.servlet </servlet-class> </ servlet>

34 01 Reflection, Annotation 스프링프레임워크 ApplicationContext.xml <bean id="messagedao" class="org.softwaregeeks.nateon.messagedao"/> <bean id="nateon" class="org.softwaregeeks.nateon.nateon">

35 01 Reflection, Annotation Java Complier javac *.java *.class

36 01 Reflection, Annotation *.class Java Virtual Machine

37 01 Reflection, Annotation JVM Internal -

38 01 Reflection, Annotation java.lang.relect.*

39 01 Reflection, Annotation 클래스 public class Person { private String name; private int age; private Sex sex; // Setter, Getter

40 01 Reflection, Annotation 클래스필드가져오기 Class clz = Person.class; Field[] fields = clz.getdeclaredfields(); for(field field : fields) { System.out.println(field.getName()); }

41 01 Reflection, Annotation 클래스메소드가져오기 Class clz = Person.class; Method[] methods = clz.getdeclaredmethods(); for(method method : methods) { System.out.println(method.getName()); }

42 01 Reflection, Annotation

43 01 Reflection, Annotation Annotation 1. 주석 ( 을달기 )

44 01 Reflection, 이름 { String value(); }

45 01 Reflection, Annotation ElementType package java.lang.annotation; public enum ElementType { TYPE, FIELD, METHOD, PARAMETER, CONSTRUCTOR, LOCAL_VARIABLE, ANNOTATION_TYPE, PACKAGE } // Class, interface, or enum (but not annotation) // Field (including enumerated values) // Method (does not include constructors) // Method parameter // Constructor // Local variable or catch clause // Annotation Types (meta-annotations) // Java package

46 01 Reflection, Annotation Retention package java.lang.annotation; public enum RetentionPolicy { SOURCE, CLASS, RUNTIME } // Annotation is discarded by the compiler // Annotation is stored in the class file, but ignored by the VM // Annotation is stored in the class file and read by the VM

47 01 Reflection, Annotation Description { String value(); }

48 01 Reflection, Annotation 어노테이션만들기 public class Person 이름이예요.") private String 나이예요.") private int 성별입니다.") private Sex sex;

49 01 Reflection, Annotation 어노테이션가져오기 Class clz = Person.class; for(field field : fields) { Annotation[] annotations = field.getdeclaredannotations(); for(annotation annotation : annotations) { if( annotation instanceof Description ) { Description description = (Description)annotation; System.out.println(description.value()); } } }

50 01 Reflection, Annotation

51 01 Reflection, TextView TextView TextView TextView hit;

52 01 Reflection, Annotation 스크린캐스트자료제공

53 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

54 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

55 02 오픈소스 - Dependency Injection Framework : RoboGuice Google Guice on Android Project!!

56 02 오픈소스 - Dependency Injection Framework : RoboGuice RoboGuice Google Guice Google Guice on Android Project!! a lightweight dependency injection framework for Java 5 and above, brought to you by Google.

57 02 오픈소스 - Dependency Injection Framework : RoboGuice

58 02 오픈소스 - Dependency Injection Framework : RoboGuice class RoboWay extends RoboActivity { class AndroidWay extends Activity { TextView ImageView LocationManager Drawable String TextView name; ImageView thumbnail; Drawable icon; String myname; LocationManager loc; public void oncreate(bundle savedinstancestate) { } super.oncreate(savedinstancestate); public void oncreate(bundle savedinstancestate) { } setcontentview(r.layout.main); super.oncreate(savedinstancestate); name = (TextView) findviewbyid(r.id.name); setcontentview(r.layout.main); thumbnail = (ImageView) findviewbyid(r.id.thumbnail); name.settext( "Hello, " + myname ); loc = (LocationManager) getsystemservice(activity.location_service); icon = getresources().getdrawable(r.drawable.icon);

59 02 오픈소스 - Dependency Injection Framework : RoboGuice RoboGuice 기능 기본클래스 Inject 가능 로깅기능 릴리즈시자동으로디버그메시지제거앱정보 ( 앱이름, 로그메세지라인, TimeStamp, Thread, 다른유용한정보 ) 들이자동으로로깅됨

60 02 오픈소스 - Dependency Injection Framework : RoboGuice RoboGuice 기능 RoboAsyncTask 기본적인 AsyncTask 를확장하고 onexception(), onfinally() 통해서에러처리가능 Event handlers OnActivityResultEvent, OnConfigurationChangedEvent, OnContentChangedEvent, OnContentViewAvailableEvent OnCreateEvent, OnDestroyEvent 등많은이벤트를받을수있도록어노테이션지원 RoboGuice 2.0 beta3 에서는더많은기능이추가됨 Support for Fragments RoboApplication 에서모듈추가를하지않고, res/values/roboguice.xml 외부파일로모듈을추가할수있음 Guice 3.0 and Maven 2.0 and 3.0 support

62 02 오픈소스 - Dependency Injection Framework : RoboGuice Custom Class Inject

63 02 오픈소스 - Dependency Injection Framework : RoboGuice Application RoboApplication addapplicationmodules AbstractModule AbstractModule AbstractModule MyModule MyModule MyModule configure configure configure bind(customclass.class) bind(customclass.class) bind(customclass.class)

64 02 오픈소스 - Dependency Injection Framework : RoboGuice RoboGuice 2.0 beta3 에서는 XML 파일을이용한 Custom Class Injection 가능

66 02 오픈소스 - Dependency Injection Framework : RoboGuice Reverse Engineering

67 02 오픈소스 - Dependency Injection Framework : RoboGuice

68 02 오픈소스 - Dependency Injection Framework : RoboGuice

69 02 오픈소스 - Dependency Injection Framework : RoboGuice

70 02 오픈소스 - Dependency Injection Framework : RoboGuice RoboGuice 장단점 장점 1. Dependency Injection Framework 인 Google Guice를 Android 에서사용할수있다. 2. 다양한어노테이션과기본클래스들을사용하여코드를줄일수있음 단점 1. 라이브러리용량문제 (guice-2.0-no_aop + roboguice1.1.2 = 533KB) Making Your App Smaller 런타임리플렉션사용으로인한성능저하

71 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

72 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations androidannotations

73 02 오픈소스 - Annotation Process Tool Library : public class TranslateActivity extends Activity EditText Animation void dotranslate() { translateinbackground(textinput.gettext().tostring()); void translateinbackground(string texttotranslate) { String translatedtext = callgoogletranslate(texttotranslate); showresult(translatedtext); }

74 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations RoboGuice 와다르게 AndroidAnnoations 런타임이아니라컴파일시, 모든소스를자동으로생성함.

75 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations // DO NOT EDIT THIS FILE, IT HAS BEEN GENERATED USING AndroidAnnotations. public final class TranslateActivity_ extends TranslateActivity public void oncreate(bundle savedinstancestate) { beforecreate_(savedinstancestate); super.oncreate(savedinstancestate); setcontentview(layout.main); } private void beforecreate_(bundle savedinstancestate) { } private void aftersetcontentview_() { textview = ((TextView) findviewbyid(id.textview));

76 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations APT(Annotation Process Tool) JSR 269(JSR 269 Pluggable Annotation Processing API) Annotation을사용하여소스컴파일전에사용자가원한는작업을할수있도록하는규격 Source Code Annotation Process Tool Compiler Class file

77 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnotations ClassA.java 를 Annotation Process Tool API 를통해 ClassA_.java 파일을생성하여처리한다. 1. AndroidManifest.xml 해당액티비티명 + _ 추가 2. Intent 를사용시에작성한액티비티명 + _ 를추가하여야 함

78 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnoations 기능 Cookbook - Activities Application

79 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnoations 기능 Extras SystemServices Injecting @UiThreadDelayed Handling options REST API(With @ Accept Trace Method Execution

81 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations Click Event, Background

83 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations REST API AndroidAnnoations + SpringAndroid

84 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnotations Spring Android (core, RestTemplate) Jackson(JSON), Simpleframework(XML) Mashaller

85 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations Spring Android HttpHeaders requestheaders = new HttpHeaders(); requestheaders.setaccept(collections.singletonlist(new MediaType("application","json"))); HttpEntity<?> requestentity = new HttpEntity<Object>(requestHeaders); String url = " RestTemplate resttemplate = new RestTemplate(); ResponseEntity<Event[]> responseentity = resttemplate.exchange(url, HttpMethod.GET, requestentity, Event[].class); Event[] events = responseentity.getbody();

86 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnotations REST public interface DaumMovieService M_CONTENTS_DEMO_APIKEY&output=xml&q={query}") public MovieContents getmoviecontents(string query); } // DaumMovieService daummovieservice;

87 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations

89 02 오픈소스 - Annotation Process Tool Library : AndroidAnnoations AndroidAnnoations 장단점 장점 1. Annotation Process Tool 이용하여컴파일시에모든코드가생성되어성능상이점이있다. ( 런타임시리플렉션을사용하지않음 ) 2. 다양한커스텀어노테이션이제공됨 단점 1. 인텐트를사용시 _ 문자열처리

90 02 오픈소스 - RoboGuice + AndroidAnnotations RoboGuice AndroidAnnotations 실제두프로젝트는유사한점이있는데 AndroidAnnotations 커미터가 RoboGuice 컨트리뷰터로참여하고있음 두프로젝트는경쟁관계라기보다 상호보완적인관계

91 02 오픈소스 - RoboGuice + AndroidAnnotations RoboGuice + AndroidAnnotations

92 Motivation 짜증나는안드로이드반복적인작업 1. UI 매핑 (findviewbyid) 2. 파라미터처리 (getintent().getextras().) 3. 비동기처리 (Async) 4. REST 통신 ( Http )

93 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

94 03 오픈소스를넘어 UI Mapping private TextView hello1; private TextView hello2; private TextView hello3; private TextView hello4; private TextView public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); hello1 = (TextView)findViewById(R.string.hello1); hello2 = (TextView)findViewById(R.string.hello2); hello3 = (TextView)findViewById(R.string.hello3); hello4 = (TextView)findViewById(R.string.hello4); hello5 = (TextView)findViewById(R.string.hello5);

95 03 오픈소스를넘어 TextView TextView TextView TextView hit;

96 03 오픈소스를넘어 UI Mapping 반복적인작업줄이기 ; Reflection 사용하기 1. Reflection으로액티비티에선언된필드리스트가져오기 2. 필드명으로리소스 identifier 값 (R.id.xxxxxx) 을가져오기 3. findviewbyid(r.id.xxxxx) 으로 View 가져오기 4. Reflection으로필드에 View Injection

97 03 오픈소스를넘어 public static void mappingviews(object object) { Activity activity = (Activity)object; Field[] fields = activity.getclass().getdeclaredfields(); for (Field field : fields) { String identifierstring = field.getname(); int identifier = activity.getresources().getidentifier(identifierstring, "id", activity.getpackagename()); if( identifier == 0 ) {continue; } View findedview = activity.findviewbyid(identifier); if( findedview == null ) { continue; } if( findedview.getclass() == field.gettype() ) { try { field.setaccessible(true); field.set(object, findedview);

98 03 오픈소스를넘어 UI Mapping 반복적인작업줄이기 ; Reflection + Custom Annotation 사용하기 1. Custom Annotation 만들기 ( InjectView ) 2. 필드에서어노테이션가져와서처리 3. BaseActivity 만들어상속구조로간소화하기

99 03 오픈소스를넘어 InjectView { int id() default 0; }

100 03 오픈소스를넘어 2. 어노테이션값가져오기 InjectView injectview = field.getannotation(injectview.class); if( injectview == null ) continue; int identifier = injectview.id();

101 Contents 목차 1. Reflection, Annotation 2. 오픈소스 1. Dependency Injection Framework : RoboGuice 2. Annotation Process Tool Library: AndroidAnnoations 3. 오픈소스를넘어 4. 정리

102 Intent 목표 반복적인코드를줄일수있는자바의리플렉션, 어노테이션을이해하고오픈소스 (RoboGuice, AndroidAnnotations) 를활용하여작업능률을높이자!!!

103 Q & A 질의응답 Twitter : Mail : moleskine7@gmail.com Blog :

104 Thank you! :D

105 - 페이지번호 -

어댑터뷰

04 커스텀어댑터뷰 (Custom Adapter View) 커스텀어댑터뷰 (Custom Adapter View) 커스텀어댑터뷰 (Custom Adatper View) 란? u 어댑터뷰의항목하나는단순한문자열이나이미지뿐만아니라, 임의의뷰가될수 있음 이미지뷰 u 커스텀어댑터뷰설정절차 1 2 항목을위한 XML 레이아웃정의 어댑터정의 3 어댑터를생성하고어댑터뷰객체에연결