how to use RxBinding & Retrofit? - rx-android

Question

here is my code :
// Observable from RxView
RxView.clicks(mBtnLogin)
.throttleFirst(500, TimeUnit.MILLISECONDS)
.subscribe(new Action1<Void>() {
#Override
public void call(Void aVoid) {
String userName = mEditUserName.getText().toString();
String passWord = mEditPassWord.getText().toString();
if (TextUtils.isEmpty(userName)) {
Toast.makeText(LoginActivity.this, R.string.input_user_name, Toast.LENGTH_SHORT).show();
return;
}
if (TextUtils.isEmpty(passWord)) {
Toast.makeText(LoginActivity.this, R.string.input_pass_word, Toast.LENGTH_SHORT).show();
return;
}
LoginAction action = Constants.retrofit().create(LoginAction.class);
// Observable from Retrofit
Observable<String> call = action.login(userName, MD5.encode(passWord));
call.subscribeOn(Schedulers.io())
.subscribe(new Observer<String>() {
#Override
public void onCompleted() {
System.out.println("completed");
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onNext(String s) {
System.out.println("next" + s);
}
});
}
});
Is there any way you could combine the Observable from RxView and the Observable from retrofit ?
i think the code is ugly and Do not meet the ReactiveX's specifications.

Answer 1

Yes, you would use the .flatMap() operator:
RxView.clicks(mButton)
.throttleFirst(500, TimeUnit.MILLISECONDS)
.subscribeOn(AndroidSchedulers.mainThread())
.flatMap(new Func1<Void, Observable<Response>>() {
#Override
public Observable<Response> call(Void aVoid) {
return apiService.getResponse().subscribeOn(Schedulers.io());
}
})
.observeOn(AndroidSchedulers.mainThread())
.subscribe();
would look a bit better with lambdas:
RxView.clicks(mButton)
.throttleFirst(500, TimeUnit.MILLISECONDS)
.subscribeOn(AndroidSchedulers.mainThread())
.flatMap(aVoid -> apiService.getResponse().subscribeOn(Schedulers.io()))
.observeOn(AndroidSchedulers.mainThread())
.subscribe();