[英]Retrofit response from view-model to observe in fragment using RxJava
我有一個使用 API 調用登錄的登錄片段。 我使用 mvvm 和數據綁定將視圖與視圖模型綁定。 在使用 RxJava 的視圖模型中觀察到通過改造的視圖模型登錄響應。
我需要觀察 loginFragment 中的改造響應,當改造響應到來時沒有觀察到。 以下是片段和視圖模型代碼。 我需要改造響應傳遞給片段或片段獲得自動觀察響應。
public class LoginFragment extends Fragment {
private LoginViewModel mLoginViewModel;
private Observable<LoginResult> dataObservable;
public static String TAG = LoginFragment.class.getSimpleName();
public Disposable disposable;
public static Fragment LoginFragmentInstance() {
Log.e(TAG, "LoginFragmentInstance: " );
Fragment fragment = new LoginFragment();
return fragment;
}
public LoginFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
FragmentLoginBinding binding = DataBindingUtil.inflate(inflater, R.layout.fragment_login, container, false);
mLoginViewModel = new LoginViewModel(getActivity());
//setViewModel method name changes based on variable name declared in XML
//mLoginViewModel.loginResult.observeO
dataObservable= mLoginViewModel.loginResult;
disposable = dataObservable.subscribe(new Consumer<LoginResult>() {
@Override
public void accept(LoginResult result) throws Exception {
Log.d("TAG", result.toString());
}
});
binding.setViewModel(mLoginViewModel);
return binding.getRoot();
}
@Override
public void onDestroy() {
mLoginViewModel.destroy();
disposable.dispose();
super.onDestroy();
}
}
視圖模型文件
public class LoginViewModel {
private static final String TAG = "LoginViewModel";
public ObservableField<String> userName = new ObservableField<>();
public ObservableField<String> password = new ObservableField<>();
public ObservableField<String> email = new ObservableField<>();
public ObservableField<String> userNameErr = new ObservableField<>();
public ObservableField<String> passwordErr = new ObservableField<>();
public ObservableField<String> emailErr = new ObservableField<>();
public Observable<LoginResult> loginResult = new Observable<LoginResult>() {
@Override
protected void subscribeActual(Observer<? super LoginResult> observer) {
}
};
public ObservableField<Boolean> enableLogin;
private CompositeDisposable myCompositeDisposable = new CompositeDisposable();
private HashMap<String, String> loginApiParams;
public Action signIn;
public Context context;
public LoginViewModel(final Context context) {
this.context = context;
Observable result = Observable.combineLatest(FieldUtils.toObservable(userName), FieldUtils.toObservable(password),
new BiFunction() {
@Override
public Object apply(Object userName, Object password) throws Exception {
int failCount = 0;
if (!InputValidator.validateMobileno(userName.toString())) {
++failCount;
userNameErr.set(context.getResources().getString(R.string.mobileno_incorrect));
} else {
userNameErr.set("");
}
if (!InputValidator.validatePassword(password.toString())) {
++failCount;
passwordErr.set(context.getResources().getString(R.string.password_incorrect));
} else {
passwordErr.set("");
}
return failCount == 0;
}
});
enableLogin = FieldUtils.toField(result);
signIn = new Action() {
@Override
public void run() throws Exception {
Log.d(TAG, "signIn button clicked");
loginCall();
}
};
}
private void loginCall() {
loginApiParams = new HashMap<>();
// loginApiParams.put(, paymentType.toString())
loginApiParams.put(ApiParameterKeyConstants.MOBILE,userName.get());
loginApiParams.put(ApiParameterKeyConstants.PASSWORD, password.get());
UserApi usersService = ApiService.INSTANCE.apiCall();
Disposable disposable = usersService.getLogin(loginApiParams)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<LoginResult>() {
@Override
public void accept(LoginResult result) throws Exception {
loginResult = Observable.just(result);
//loginResult.subscribe()
//loginResult = result ;
//Log.d(TAG, "Login Successfull");
}
}, new Consumer<Throwable>()
{
@Override
public void accept(Throwable throwable) throws Exception {
Log.d(TAG, "Login Failed");
}
});
myCompositeDisposable.add(disposable);
}
}
似乎您在ViewModel
loginCall
方法中為loginResult
重新分配了一個 Observable,而不是將結果傳遞給它的觀察者。
您應該嘗試調用loginResult.onNext(result)
或loginResult.onComplete(result)
而不是loginResult = Observable.just(result);
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