Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Android DI
Search
Daichi Furiya (Wasabeef)
September 16, 2014
Programming
9
1.3k
Android DI
AndroidでDIをしてみる
ButterKnife, Dagger
Daichi Furiya (Wasabeef)
September 16, 2014
Tweet
Share
More Decks by Daichi Furiya (Wasabeef)
See All by Daichi Furiya (Wasabeef)
DevFest Tokyo 2025 - Flutter のアプリアーキテクチャ現在地点
wasabeef
6
2k
About Flutter Architecture
wasabeef
1
260
2023 Flutter/Dart Summary
wasabeef
0
82
I/O Extended 2023 - Dart と Flutter の新機能
wasabeef
0
190
I/O Extended 2023 - Flutter 活用事例
wasabeef
10
3k
What it Takes to be a Flutter Developer
wasabeef
0
200
FlutterKaigi 2022 Keynote
wasabeef
1
620
Flutter Hooks を使ったアプリ開発 / App Development with the Flutter Hooks
wasabeef
2
1.4k
Flutter 2021 の振り返りと今後のアプリ開発に向けて / Looking back on Flutter 2021 and for future app development.
wasabeef
4
2.2k
Other Decks in Programming
See All in Programming
AI時代のドメイン駆動設計-DDD実践におけるAI活用のあり方 / ddd-in-ai-era
minodriven
25
9.7k
AIコーディングAgentとの向き合い方
eycjur
0
250
パッケージ設計の黒魔術/Kyoto.go#63
lufia
3
410
MCPとデザインシステムに立脚したデザインと実装の融合
yukukotani
4
1.2k
KessokuでDIでもgoroutineを活用する / Go Connect #6
mazrean
0
140
The state patternの実践 個人開発で培ったpractice集
miyanokomiya
0
160
RDoc meets YARD
okuramasafumi
4
160
Vue・React マルチプロダクト開発を支える Vite
andpad
0
110
Zendeskのチケットを Amazon Bedrockで 解析した
ryokosuge
3
260
レガシープロジェクトで最大限AIの恩恵を受けられるようClaude Codeを利用する
tk1351
4
1.6k
Updates on MLS on Ruby (and maybe more)
sylph01
1
180
print("Hello, World")
eddie
1
450
Featured
See All Featured
The Art of Programming - Codeland 2020
erikaheidi
55
13k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
Done Done
chrislema
185
16k
Navigating Team Friction
lara
189
15k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
18
1.1k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
31
2.2k
Docker and Python
trallard
45
3.5k
The Cult of Friendly URLs
andyhume
79
6.6k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Rails Girls Zürich Keynote
gr2m
95
14k
Transcript
Android Dependency Injection CyberAgent, Inc. ߱ େ
About Me Daichi Furiya @wasabeef_jp wasabeef http://wasabeef.jp
ݱࡏɺϑϧωΠςΟϒͷ ৽نΞϓϦΛ։ൃத
// Google compile 'com.android.support:support-v4:20.+' compile 'com.android.support:support-v13:20.+' compile 'com.android.support:recyclerview-v7:21.0.0-rc1' compile 'com.android.support:cardview-v7:21.0.0-rc1'
compile 'com.google.android.gms:play-services:5.+' // Square compile 'com.squareup.retrofit:retrofit:1.6.+' compile 'com.squareup.okhttp:okhttp:2.0.+' compile ‘com.squareup.okhttp:okhttp-urlconnection:2.0.+’ compile 'com.squareup:otto:1.3.+' compile 'com.jakewharton.timber:timber:2.4.+' compile 'com.jakewharton:butterknife:5.1.+' compile 'com.squareup.dagger:dagger:1.2.+' compile 'com.squareup.dagger:dagger-compiler:1.2.+' // Image Loader compile 'com.github.bumptech.glide:glide:3.3.+'.2.+' // JSON compile 'com.fasterxml.jackson.core:jackson-core:2.2.+' compile 'com.fasterxml.jackson.core:jackson-databind:2.2.+' // UI compile 'com.github.ksoichiro:simplealertdialog:1.1.1@aar' compile 'com.commonsware.cwac:richedit:0.3.0' compile 'com.github.manuelpeinado.fadingactionbar:fadingactionbar:3.1.+' // Serialize compile 'org.parceler:parceler-api:0.2.+' provided 'org.parceler:parceler:0.2.+' compile 'com.github.satyan:sugar:1.4@aar' // Unit Test testCompile 'junit:junit:4.10' testCompile 'org.robolectric:robolectric:2.+' testCompile 'org.assertj:assertj-core:1.6.1'
// Google compile 'com.android.support:support-v4:20.+' compile 'com.android.support:support-v13:20.+' compile 'com.android.support:recyclerview-v7:21.0.0-rc1' compile 'com.android.support:cardview-v7:21.0.0-rc1'
compile 'com.google.android.gms:play-services:5.+' // Square compile 'com.squareup.retrofit:retrofit:1.6.+' compile 'com.squareup.okhttp:okhttp:2.0.+' compile ‘com.squareup.okhttp:okhttp-urlconnection:2.0.+’ compile 'com.squareup:otto:1.3.+' compile 'com.jakewharton.timber:timber:2.4.+' compile 'com.jakewharton:butterknife:5.1.+' compile 'com.squareup.dagger:dagger:1.2.+' compile 'com.squareup.dagger:dagger-compiler:1.2.+' // Image Loader compile 'com.github.bumptech.glide:glide:3.3.+'.2.+' // JSON compile 'com.fasterxml.jackson.core:jackson-core:2.2.+' compile 'com.fasterxml.jackson.core:jackson-databind:2.2.+' // UI compile 'com.github.ksoichiro:simplealertdialog:1.1.1@aar' compile 'com.commonsware.cwac:richedit:0.3.0' compile 'com.github.manuelpeinado.fadingactionbar:fadingactionbar:3.1.+' // Serialize compile 'org.parceler:parceler-api:0.2.+' provided 'org.parceler:parceler:0.2.+' compile 'com.github.satyan:sugar:1.4@aar' // Unit Test testCompile 'junit:junit:4.10' testCompile 'org.robolectric:robolectric:2.+' testCompile 'org.assertj:assertj-core:1.6.1'
DI Libraries • Google/Guice • RoboGuice • AndroidAnnotations • Dagger
• Butter Knife
Butter Knife
ViewपΓͷ͓ܾ·ΓCodeΛ AnnotationΛར༻ͯ͠ੜ͢Δ View "injection" library for Android which uses annotation
processing to generate boilerplate code for you.
View Injection
public class ExampleActivity extends Activity { TextView mTitle; TextView mBody;
TextView mFooter; ! @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! mTitle = (TextView) findViewById(R.id.title); mSubTitle = (TextView) findViewById(R.id.body); mFooter = (TextView) findViewById(R.id.footer); } }
public class ExampleActivity extends Activity { @InjectView(R.id.title) TextView mTitle; @InjectView(R.id.subtitle)
TextView mSubtitle; @InjectView(R.id.footer) TextView mFooter; ! @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! mTitle = (TextView) findViewById(R.id.title); mSubTitle = (TextView) findViewById(R.id.body); mFooter = (TextView) findViewById(R.id.footer); } }
public class ExampleActivity extends Activity { @InjectView(R.id.title) TextView mTitle; @InjectView(R.id.subtitle)
TextView mSubtitle; @InjectView(R.id.footer) TextView mFooter; ! @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! ButterKnife.inject(this); ! ! } }
View Lists Injection @InjectViews({R.id.first_name, R.id.middle_name, R.id.last_name }) List<EditText> mNameViews;
ButterKnife.apply(mNameViews, View.ALPHA, 0); ButterKnife.apply
static final Action<View> DISABLE = new Action<>() { @Override public
void apply(View view, int index) { view.setEnabled(false); } } ! ! ButterKnife.apply(mNameViews, DISABLE); Custom Action
Listener Injection
public class ExampleActivity extends Activity implements View.OnClickListener { ! @Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! findViewById(R.id.button).setOnClickListener(this); } ! @Override public void onClick(View v) { Button button = (Button) v; button.setText("clicked."); } }
public class ExampleActivity extends Activity { ! ! @Override public
void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! ! } ! @OnClick(R.id.submit) public void onClickSubmit(Button button) { button.setText(“clicked."); ! } }
public class ExampleActivity extends Activity { ! ! @Override public
void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ! ButterKnife.inject(this); } ! @OnClick(R.id.submit) public void onClickSubmit(Button button) { button.setText(“clicked."); ! } }
Multiple OnClick @OnClick({ R.id.door1, R.id.door2, R.id.door3 }) public void pickDoor(DoorView
door) { // TODO Use.. }
Android Studio Plugin ! -> android-butterknife-zelezny
ButterKnife ·ͱΊ • ViewͷInjectionʹಛԽͯ͠Δ • ػೳ͕গͳ͍͚ͩʹɺγϯϓϧͰ͍͍͢
Square/Dagger
Guice ʁ • ͱͯීٴͯ͠Δ • ඪ४తͳInjectionͷػೳΛඋ͑ͯΔ • ॳظԽٴͼInjection͕͘ɺϝϞϦͷى ͖͍͢
Dagger (ObjectGraph) • ίϯύΠϧ࣌ݕূɿϞδϡʔϧͱೖΛݕূ ͢ΔΞϊςʔγϣϯϓϩηοα • ࣮ߦ࣌ʹɺϦϑϨΫγϣϯΛར༻͠ͳ͍ • ϝϞϦͷӨڹۃΘ͔ͣʹ͢Δ •
ViewͷInjectग़དྷͳ͍
Dagger ͷߏཁૉ
@Module + @Provides ґଘؔΛఏڙ͢ΔͨΊͷΈɾઃఆ
ObjectGraph ґଘؔཧͱΠϯδΣΫλ
@Inject ґଘؔΛཁٻ͢ΔͨΊͷΈ
@Module + @Provides ͷఆٛ
! public class ApiModule { ! public RestAdapter provideRestAdapter(OkHttpClient client)
{ return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } ! ! public OkHttpClient provideOkHttpClient() { return new OkHttpClient(); } }
@Module( injects = ExampleActivity.java ) public class ApiModule { !
public RestAdapter provideRestAdapter(OkHttpClient client) { return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } ! ! public OkHttpClient provideOkHttpClient() { return new OkHttpClient(); } }
@Module( injects = ExampleActivity.java ) public class ApiModule { @Provides
@Singleton public RestAdapter provideRestAdapter(OkHttpClient client) { return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } ! @Provides @Singleton public OkHttpClient provideOkHttpClient() { return new OkHttpClient(); } }
ObjectGraph + @Inject ͷఆٛ
public class ExampleActivity extends Activity { ! ! RestAdapter mRestAdapter;
! @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ! mRestAdapter = new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(new OkHttpClient())) .build(); } }
public class ExampleActivity extends Activity { private ObjectGraph mObjectGraph; !
RestAdapter mRestAdapter; ! @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ! mRestAdapter = new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(new OkHttpClient())) .build(); } }
public class ExampleActivity extends Activity { private ObjectGraph mObjectGraph; !
RestAdapter mRestAdapter; ! @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ! mObjectGraph = ObjectGraph.create(new ApiModule()); mObjectGraph.inject(this); ! ! } }
public class ExampleActivity extends Activity { private ObjectGraph mObjectGraph; !
@Inject RestAdapter mRestAdapter; ! @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ! mObjectGraph = ObjectGraph.create(new ApiModule()); mObjectGraph.inject(this); ! ! } }
ObjectGraph.plus
public class SignUpActivity extends Activity { private ObjectGraph mObjectGraph; !
@Inject RestAdapter mRestAdapter; ! @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ! ExampleApp app = (ExampleApp) getApplication(); mObjectGraph = app.getObjectGraph(); mObjectGraph.plus(new SignUpModule()); mObjectGraph.inject(this); } }
ग़དྷͳ͍͜ͱ
! ! ! ! @Module( injects = ExampleActivity.java ) public
class ApiModule { @Provides @Singleton public RestAdapter provideRestAdapter(OkHttpClient client) { return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } ! /*****/ }
@Module( injects = { ExampleActivity.java, ExampleLoginActivity.java, ExampleWebActivity.java, ExampleImageActivity.java, ExampleCameraActivity.java }
) public class ApiModule { @Provides @Singleton public RestAdapter provideRestAdapter(OkHttpClient client) { return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } }
! ! ! ! @Module( injects = BaseActivity.java ) public
class ApiModule { @Provides @Singleton public RestAdapter provideRestAdapter(OkHttpClient client) { return new RestAdapter.Builder() .setEndpoint(“http://wasabeef.jp”) .setClient(new OkClient(client)) .build(); } ! /*****/ }
Google/Dagger
Square/Daggerͱͷҧ͍ ɾτϨʔαϏϦςΟ ɾ໌֬ͳAPI ɾύϑΥʔϚϯε্
None
DaggerͰԿ͕͍͔ͨ͠ʁ
Testable Android
@RunWith(RobolectricTestRunner.class) public class Test { ! @Inject RestAdapter mRestAdapter; !
@Module( includes = ApiModule.class, injects = { TestActivity.class }, overrides = true, complete = false ) class TestApiModule { @Provides @Singleton public RestAdapter provideRestAdapter(OkHttpClient okHttpClient) { return new RestAdapter.Builder() // .setEndpoint(“http://127.0.0.1:8080”) .setClient(new OkClient(client)) .build(); } ! @Provides @Singleton public Client provideOkHttpClient() { return new LocalJsonClient(Robolectric.application.getApplicationContext()); } }
Android Studio Plugin ! ! -> dagger-intellij-plugin
Dagger ·ͱΊ • ৽ͨʹDI༻ͷઃܭΛਅʹߟ͑Δ • υΩϡϝϯτ͕গͳ͍ • ButterKnife, Retrofitͱซ༻͢Δͷ͕ྑ͍ •
Google/Dagger͕ग़ΔͷͰɺকདྷੑ༗Γ
ͬͺΓΞϊςʔγϣϯͩΑͶ @Parcel @JsonInclude @JsonValue @JsonCreator @Module @Singleton @Provides @Inject @Subscribe
@DrawableRes @StringRes @OnClick @InjectView @IdRes @POST @Path @Body @GET @Query @PUT @Multipart @Nullable @NonNull @Override @SuppressLint @TargetApi
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ