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Choosing Right!
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Alexey Buzdin
February 19, 2015
Programming
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52
Choosing Right!
How an Android library can fix your needs.
Alexey Buzdin
February 19, 2015
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Transcript
Choosing Right! How an Android library can fix your needs
Alexey Buzdin
ORMs - Fast
ORMs - Fast - Supports Cursor
Cursor new FlowCursorList<>(true, TestModel.class, Condition.column(TestModel$Table.NAME) .like("pasta%")); on getItem -> move
Cursor
ORMs - Fast - Supports Cursor - Supports Migration
ORMs - Fast - Supports Cursor - Supports Migration -
Supports Query Syntax
Query Syntax new Select().from(Item.class) .orderBy(“RANDOM()") .executeSingle();
ORMs Bonus points - Model Callbacks
Model Callbacks @Override protected void beforeSave() { updatedAt = System.currentTimeMillis();
} @Override protected void afterDelete() { // clean up some things? }
ORMs Bonus points - Supports Relations - Model Callbacks
ORMs Bonus points - Supports Relations - Model Callbacks -
Supports Custom Converters - Supports Transactions
ORMs Bonus points - Supports Relations - Model Callbacks -
Supports Custom Converters - Supports Transactions
DBFlow https://github.com/Raizlabs/DBFlow ActiveAndroid ORMLite Ollie https://github.com/pardom/ActiveAndroid https://github.com/pardom/Ollie https://github.com/j256/ormlite-android https://github.com/emilsjolander/sprinkles Sprinkles
Images - Image transformations - ImageView recycling - Automatic memory
and disk caching
Images https://github.com/loopj/android-smart-image-view https://github.com/square/picasso
Dependency Injection - Fast - No boilerplate - Minimum configuration
- Support scopes and providers - Android system services in scope
Dependency Injection https://github.com/google/dagger https://github.com/roboguice/roboguice https://github.com/square/dagger RoboGuice 3.0 Dagger Dagger 2.0
RoboGuice Defaults https://github.com/roboguice/roboguice/blob/master/ roboguice/src/main/java/roboguice/config/ DefaultRoboModule.java
Dagger
Dagger 2.0
Resource Injection - View injection - Resource injection - Listeners
injection
InjectViews class ExampleActivity extends Activity { @InjectView(R.id.title) TextView title; @InjectView(R.id.subtitle)
TextView subtitle; @InjectView(R.id.footer) TextView footer; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.simple_activity); ButterKnife.inject(this); // TODO Use "injected" views... } }
InjectView Holder static class ViewHolder { @InjectView(R.id.title) TextView name; @InjectView(R.id.job_title)
TextView jobTitle; public ViewHolder(View view) { ButterKnife.inject(this, view); } }
Listeners @OnClick(R.id.submit) public void submit(View view) { // TODO submit
data to server... } @OnItemSelected(R.id.list_view) void onItemSelected(int position) { // TODO ... }
Inject Resource public class MyActivity extends RoboActivity { @InjectResource(R.anim.my_animation) Animation
myAnimation; @InjectResource(R.string.app_name) String appName; // the rest of your code }
Resource Injection RoboGuice 3.0 https://github.com/roboguice/roboguice ButterKnife https://github.com/JakeWharton/butterknife AndroidAnnotations https://github.com/excilys/androidannotations
REST - Multipart request body and file upload - Support
URL param and query param - Support JSON, XML - Header Manipulation
REST https://github.com/square/retrofit Retrofit AndroidAnnotations https://github.com/excilys/androidannotations
AndroidAnnotations @Rest("http://www.bookmarks.com") public interface BookmarkClient { @Get("/bookmarks/{userId}?search={search}") Bookmarks getBookmarks(String search,
String userId); } ……. @RestService BookmarkClient restClient; …….
Retrofit RestAdapter restAdapter = new RestAdapter.Builder() .setEndpoint("https://api.github.com") .build(); GitHubService service
= restAdapter.create(GitHubService.class); public interface GitHubService { @GET("/users/{user}/repos") List<Repo> listRepos(@Path("user") String user); }
HTTP http://loopj.com/android-async-http/ Android Async Http https://github.com/square/okhttp OK-Http
Tests https://github.com/square/assertj-android https://github.com/robolectric/robolectric https://github.com/RobotiumTech/robotium https://code.google.com/p/android-test-kit/wiki/Espresso AssertJ Robolectric Espresso Robotium
Robotium public void testPreferenceIsSaved() throws Exception { Solo solo =
new Solo(getInstrumentation(), getActivity()); solo.clickOnText("txt"); solo.clearEditText(2); solo.enterText(2, "robotium"); solo.clickOnButton("Save"); solo.goBack(); solo.clickOnText("Edit File Extensions"); assertTrue(solo.searchText(“application/robotium")); } } public class EditorTest extends ActivityInstrumentationTestCase2<EditorActivity> {
Robolectric @RunWith(RobolectricTestRunner.class) public class MyActivityTest { @Test public void clickingButton_shouldChangeResultsViewText()
throws Exception { Activity activity = Robolectric.buildActivity(MyActivity.class).create().get(); Button pressMeButton = (Button) activity.findViewById(R.id.press_me_button); TextView results = (TextView) activity.findViewById(R.id.results_text_view); pressMeButton.performClick(); String resultsText = results.getText().toString(); assertThat(resultsText, equalTo("Testing Android Rocks!")); } }
AssertJ assertThat(layout).isVisible() .isVertical() .hasChildCount(4) .hasShowDividers(SHOW_DIVIDERS_MIDDLE); assertThat(view).isGone();
Validation https://github.com/inmite/android-validation-komensky https://github.com/ragunathjawahar/android-saripaar Android Validation Komensky Android Saripaar
Android Saripaar @NotEmpty @Email private EditText emailEditText; @Password(min = 6,
scheme = Password.Scheme.ALPHA_NUMERIC_MIXED_CASE_SYMBOLS) private EditText passwordEditText; @ConfirmPassword private EditText confirmPasswordEditText; @Checked(message = "You must agree to the terms.") private CheckBox iAgreeCheckBox; new Validator(this).validate();
Android Validation Komensky @NotEmpty(messageId = R.string.validation_name) @MinLength(value = 3, messageId
= R.string.validation_name_length, order = 2) private EditText mNameEditText; FormValidator.validate(this, new SimpleErrorPopupCallback(this));
Misc Pidcat https://github.com/square/otto Otto https://github.com/JakeWharton/pidcat https://github.com/avast/android-butterknife-zelezny Android Butterknife Zelezny
Pidcat
Android Butterknife Zelezny
Otto Bus bus = new Bus(); bus.post(new AnswerAvailableEvent(42)); @Subscribe public
void answerAvailable(AnswerAvailableEvent event) { // TODO: React to the event somehow! } bus.register(this); @Produce public AnswerAvailableEvent produceAnswer() { // Assuming 'lastAnswer' exists. return new AnswerAvailableEvent(this.lastAnswer); }