Programming in Android

Below features are supported for Android. Most daily used APIs: Pair, Triple, Tuple, Multiset, BiMap, Multimap, ImmutableList, ImmutableSet, ImmutableMap, Splitter, Joiner, Builder, Difference, IOUtil, N ...

A JSON Parser: Easy to learn, simple to use, two times faster than Gson and more powerful.

The simplest synchronous/asynchronous HTTP client: HttpClient and OKHttpClient

Agile Restful Web service development: HttpProxy, which is similar with Retrofit and even simpler.

Most convenient utility for SQLite: SQLiteExecutor and SQLBuilder. No configuration/Annotation

Stream + AsyncExecutor + CompletableFuture + Futures with Lambdas supported by Retrolambda -> RxJava

EventBus and Fu. More at: Java API docs

The coming version Android studio is going to support Java 8 features. The Stream API provided in AbacusUtil mostly is consistent with the Stream API in JDK 8. It's very easy to replace with each other. The implementation of Stream API in AbacusUtil is pretty straight forward. In a lot of scenarios, it's even faster than the implementation in JDK 8. Besides int, long, double, other primitive types: boolean, char, byte, short, float are also supported by the Stream API in AbacusUtil. Additionally, a lot of methods(e.g. forEach, filter...) in N are also designed to support functional programming...Enjoying Note: I tested on Android Studio 2.1 RC. and found couple of issues: 1), Instant run is not supported. 2), slow, 3), unable to show the variable value in debug. So maybe it's better to stay with Retrolambda before new Java 8 features become stable.

Switch smoothly between UI and background threads by the fluent execute/callback APIs in CompletableFuture

TPExecutor.execute(() -> {
    return accountService.createAccount(signUpRequest);
}).thenRunOnUI((signUpResp, signUpError) -> {
    signInButton.setText("SIGN UP");
    ProgressBarTask.finish();

    if (Fu.check(signUpResp)) {
        final LoginRequest signInRequest = new LoginRequest().setAccessToken(accessToken).setLoginId(signUpRequest.getEmailAddress())
            .setLoginPassword(signUpRequest.getPassword());

        TPExecutor.execute(() -> {
            return accountService.login(signInRequest);
        }).thenRunOnUI((signInResp, signInError) -> {
            if (Fu.check(signInResp)) {
                final Account account = signInResp.getAccount();
                Settings.setUserId(account.getId());
                Settings.setUserName(account.getFullName());
                Settings.setRWSUserAccessToken(signInResp.getUserAccessToken());

                final Intent intent = new Intent();
                intent.putExtra(Fu.USER_ACCESS_TOKEN, signInResp.getUserAccessToken());
                setResult(RESULT_OK, intent);
            } else {
                startActivity(new Intent(this, SignInActivity.class));
            }

            finish();
        });
    } else {
        if (signUpResp != null) {
            if (signUpResp.getRespCode() == ResponseCode.LOGIN_ID_NOT_AVAILABLE) {
                Fu.showToast("Email address: " + email + " has been used. Please try with another one or go to sign in page to login " +
                    "directly");
            } else {
                Fu.showToast("Unable to create account due to", signUpResp);
            }
        } else {
            Fu.showToast("Unable to create account due to network or system error.");
        }
    }
});