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TonyTangAndroid/gist:35bd8c9d2eb0fba8206c955dbf1dc1d5

Created March 3, 2017 20:23
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The submit button only gets enabled if username and password have a length>=3
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gistfile1.txt
emailChangeObservable = RxTextView.textChangeEvents(email);
passwordChangeObservable = RxTextView.textChangeEvents(password);
// force-disable the button
submitButton.setEnabled(false);
Observable.combineLatest(emailChangeObservable, passwordChangeObservable,
(emailObservable, passwordObservable) -> {
boolean emailCheck = emailObservable.text().length() >= 3;
boolean passwordCheck = passwordObservable.text().length() >= 3;
return emailCheck && passwordCheck;
}).subscribe(aBoolean -> {
submitButton.setEnabled(aBoolean);
});
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taken from https://medium.com/swlh/party-tricks-with-rxjava-rxandroid-retrolambda-1b06ed7cd29c#.w6agbuzg3

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