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| public class RxSignupActivity extends ActionBarActivity { | |
| private static final Pattern emailPattern = Pattern.compile( | |
| "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@" | |
| + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$"); | |
| private EditText editTextUsername; | |
| private EditText editTextEmail; | |
| private Button buttonRegister; | |
| @Override | |
| protected void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.activity_signup); | |
| editTextUsername = (EditText) findViewById(R.id.edit_username); | |
| editTextEmail = (EditText) findViewById(R.id.edit_email); | |
| buttonRegister = (Button) findViewById(R.id.btn_register); | |
| buttonRegister.setEnabled(false); | |
| Observable<Boolean> userNameValidator = WidgetObservable.text(editTextUsername) | |
| .map(e -> e.text()) | |
| .map(t -> t.length() > 4); | |
| Observable<Boolean> emailValidator = WidgetObservable.text(editTextEmail) | |
| .map(e -> e.text()) | |
| .map(t -> emailPattern.matcher(t).matches()); | |
| userNameValidator | |
| .distinctUntilChanged() | |
| .doOnNext(b -> Log.d("[Rx]", "Uname " + (b ? " Valid" : "Invalid"))) | |
| .map(b -> b ? Color.BLACK : Color.RED) | |
| .subscribe(color -> editTextUsername.setTextColor(color)); | |
| emailValidator | |
| .distinctUntilChanged() | |
| .doOnNext(b -> Log.d("[Rx]", "Email " + (b ? " Valid" : "Invalid"))) | |
| .map(b -> b ? Color.BLACK : Color.RED) | |
| .subscribe(color -> editTextEmail.setTextColor(color)); | |
| Observable<Boolean> registerEnabled | |
| = Observable.combineLatest(userNameValidator, emailValidator, (a, b) -> a && b); | |
| registerEnabled | |
| .distinctUntilChanged() | |
| .doOnNext(b -> Log.d("[Rx]", "Register button " + (b ? " Enabled" : "Disabled"))) | |
| .subscribe(enabled -> buttonRegister.setEnabled(enabled)); | |
| } | |
| } |
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