building more with less

More With Lesswith android bootstrap

building

Wednesday, February 6, 13

@donnfelker


Building More With Less


agenda

open sourcelibrariesexamplesbootstrap


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tons of integration work

tons of open source


open source

roboguiceaction bar sherlockhttp-requestgsonview pager indicatorrobotiummavenandroid maven pluginfragments


roboguicedependency injection for android

roboguice.org


class RoboWay extends RoboActivity { @InjectView(R.id.name) TextView name; @InjectView(R.id.thumbnail) ImageView thumbnail; @InjectResource(R.drawable.icon) Drawable icon; @InjectResource(R.string.app_name) String myName; @Inject LocationManager loc;

public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); name.setText( "Hello, " + myName ); } }

roboguice.org


User Interface

Service Layer

Persistence Layerwhat if I need a string

resource down here?

service layer: goo.gl/7NQVZ persistence layer: goo.gl/j5u74

roboguice.org


public class UserRepository {

@InjectResource(R.string.public_key) String publicKey;

public void saveProfile(UserProfile profile) { // user publicKey to do some encryption // Now, save the encrypted profile to db/api/etc } }

roboguice.org


public class UserRepository {

@InjectResource(R.string.public_key) String publicKey; @Inject protected AuthService authService;

public void saveProfile(UserProfile profile) { // Get auth token from auth service then save // user publicKey to do some encryption // Now, save the encrypted profile to api } }

roboguice.org


must extend

RoboActivityRoboListActivityRoboFragmentActivityRoboListFragmentActivity...

roboguice.org


roboguice.org


action bar sherlockaction bar support for pre 3.x

actionbarsherlock.com


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usage

getSupportActionBar()

native calls

supports theming

must use Sherlock themes as parent



must extend

SherlockActivitySherlockListActivitySherlockFragmentActivitySherlockListFragmentActivity...



ruh roh.roboguice and actionbarsherlock must both extend activity



roboguice-sherlockcombines roboguice and sherlock

github.com/rtyley/roboguice-sherlock


public class CarouselActivity extends RoboSherlockFragmentActivity {

@InjectView(id.tpi_header) private TitlePageIndicator indicator; @InjectView(id.vp_pages) private ViewPager pager;

@Override protected void onCreate(Bundle savedInstanceState) {

requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

super.onCreate(savedInstanceState); setContentView(R.layout.carousel_view);

pager.setAdapter(new BootstrapPagerAdapter(getResources(), getSupportFragmentManager()));

indicator.setViewPager(pager); pager.setCurrentItem(1); }

}



http-request

kevinsawicki.github.com/http-request/

A simple convenience library for using a HttpURLConnection to make requests and access the response.


gsona library for working with json

code.google.com/p/google-gson/


class BagOfPrimitives { private int value1 = 1; private String value2 = "abc"; private transient int value3 = 3; BagOfPrimitives() { // no-‐args constructor }}

BagOfPrimitives obj = new BagOfPrimitives();Gson gson = new Gson();String json = gson.toJson(obj);

a pojo

serialization

BagOfPrimitives obj2 = gson.fromJson(json, BagOfPrimitives.class);

deserialization



woohoo! no more manual json parsing



view pager indicator

viewpagerindicator.com


viewpagerindicator.com


android-maven-pluginan easy to use maven plugin for android

code.google.com/p/maven-android-plugin/


<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-‐instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-‐v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>

<artifactId>android-‐bootstrap</artifactId> <packaging>apk</packaging> <name>Android Bootstrap app</name> <url>https://github.com/donnfelker/android-‐bootstrap</url>

<parent> <version>1.0</version> <groupId>com.donnfelker.android.bootstrap</groupId> <artifactId>android-‐bootstrap-‐parent</artifactId> </parent>

<properties> <abs.version>4.1.0</abs.version> </properties> <dependencies> <dependency> <groupId>com.google.android</groupId> <artifactId>android</artifactId> <scope>provided</scope> <version>${android.version}</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.1</version> </dependency> <dependency> <groupId>com.github.rtyley</groupId> <artifactId>roboguice-‐sherlock</artifactId> <version>1.4</version> </dependency> ...

<dependency> <groupId>com.github.kevinsawicki</groupId> <artifactId>wishlist</artifactId> <version>0.3</version> <type>apklib</type> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.10</version> <scope>test</scope> </dependency> <dependency> <groupId>org.hamcrest</groupId> <artifactId>hamcrest-‐library</artifactId> <version>1.3.RC2</version> <scope>test</scope> </dependency> <dependency> <groupId>org.mockito</groupId> <artifactId>mockito-‐core</artifactId> <version>1.9.0</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>com.jayway.maven.plugins.android.generation2</groupId> <artifactId>android-‐maven-‐plugin</artifactId> </plugin> <plugin> <artifactId>maven-‐compiler-‐plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> <profiles> <profile> <id>release</id> <!-‐-‐ via this activation the profile is automatically used when the release is done with the maven release plugin -‐-‐> <activation> <property> <name>performRelease</name> <value>true</value> </property> </activation> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-‐jarsigner-‐plugin</artifactId> <executions> <execution> <id>signing</id> <goals> <goal>sign</goal> <goal>verify</goal> </goals> <phase>package</phase> <inherited>true</inherited> <configuration> <removeExistingSignatures>true</removeExistingSignatures> <archiveDirectory /> <!-‐-‐ These values can either be placed directly into to file below, or provided via the command line during the build process as such: "mvn clean release -‐Dbootstrap.sign.keystore=foobar" ... etc. This will keep the keystore out of your file so no prying eyes can see. Also, if you have a ci (Continuous Integration) profile, these values can be passed in via the build server. -‐-‐> <keystore>${bootstrap.sign.keystore}</keystore> <alias>${bootstrap.sign.alias}</alias> <storepass>${bootstrap.sign.storepass}</storepass> <keypass>${bootstrap.sign.keypass}</keypass> <verbose>true</verbose> </configuration> </execution> </executions> </plugin> <!-‐-‐ the signed apk then needs to be zipaligned -‐-‐> <plugin> <groupId>com.jayway.maven.plugins.android.generation2</groupId> <artifactId>android-‐maven-‐plugin</artifactId> <inherited>true</inherited> <configuration> <sign> <debug>false</debug> </sign> <zipalign> <verbose>true</verbose> <outputApk>${project.build.directory}/${project.artifactId}-‐${project.version}-‐signed-‐aligned.apk</outputApk> </zipalign> <manifest> <debuggable>false</debuggable> </manifest> </configuration> <executions> <execution> <id>alignApk</id> <phase>package</phase> <goals> <goal>zipalign</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </profile> </profiles></project>


build process easier to manage



resources

google group

ch14 of sonatype book goo.gl/3Waf5 (sample next)



fragments android support library


download from android sdk


“its like selenium, but for android”

code.google.com/p/robotium


public class EditorTest extends ActivityInstrumentationTestCase2<EditorActivity> {

private Solo solo;

public EditorTest() { super("com.test.editor", EditorActivity.class); }

public void setUp() throws Exception { solo = new Solo(getInstrumentation(), getActivity()); } public void testPreferenceIsSaved() throws Exception { solo.sendKey(Solo.MENU); solo.clickOnText("More"); solo.clickOnText("Preferences"); solo.clickOnText("Edit File Extensions"); Assert.assertTrue(solo.searchText("rtf")); solo.clickOnText("txt"); solo.clearEditText(2); solo.enterText(2, "robotium"); solo.clickOnButton("Save"); solo.goBack(); solo.clickOnText("Edit File Extensions"); Assert.assertTrue(solo.searchText("application/robotium")); }

@Override public void tearDown() throws Exception { solo.finishOpenedActivities(); }}



androidbootstrap.com


influences are from github and gaug.es

GitHub Gaug.es




includesroboguiceaction bar sherlockhttp-requestgsonview pager indicatorrobotiummavenandroid maven pluginfragmentsapi consumptionimage downloadingimage cachingcache mechanismpojo supportand more...

ahhhhhh yeah


uses

template for your next projectuse as a referencea how to tutorialproject MVP bootstrap



q & a



Thank You.questions? tweet @donnfelker


building more with less

Technology

android android

bootstrap androidbootstrap

android bootstrapwednesday

rtyley roboguicesherlock

square github gaug

private string value2

string myname

gson gsona library