部分调整

Administrator

2021-11-03 de74e5ec3fbdab065e8b91240fa1944c4b3440c2

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package com.duqing.missions.ui.login.view;
 
import android.util.Patterns;
 
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
 
import com.duqing.missions.R;
import com.duqing.missions.ui.login.data.LoginRepository;
import com.duqing.missions.ui.login.data.model.LoggedInUser;
 
import io.reactivex.Observable;
import io.reactivex.disposables.Disposable;
import io.reactivex.functions.Consumer;
import io.reactivex.observers.DisposableObserver;
 
public class LoginViewModel extends ViewModel {
 
    private MutableLiveData<LoginFormState> loginFormState = new MutableLiveData<>();
    private MutableLiveData<LoginResult> loginResult = new MutableLiveData<>();
    private LoginRepository loginRepository;
 
    LoginViewModel(LoginRepository loginRepository) {
        this.loginRepository = loginRepository;
    }
 
    LiveData<LoginFormState> getLoginFormState() {
        return loginFormState;
    }
 
    LiveData<LoginResult> getLoginResult() {
        return loginResult;
    }
 
    public void login(String username, String password) {
        // can be launched in a separate asynchronous job
        Observable<LoggedInUser> result = loginRepository.login(username, password);
        result.doOnSubscribe(new Consumer<Disposable>() {
            @Override
            public void accept(Disposable disposable) throws Exception {
 
            }
        }).subscribe(new DisposableObserver<LoggedInUser>(){
 
            @Override
            public void onNext(LoggedInUser value) {
                loginResult.setValue(new LoginResult((new LoggedInUserView(value.getDisplayName()))));
            }
 
            @Override
            public void onError(Throwable e) {
                loginResult.setValue(new LoginResult(R.string.login_failed));
            }
 
            @Override
            public void onComplete() {
 
            }
        });
    }
 
    public void loginDataChanged(String username, String password) {
        if (!isUserNameValid(username)) {
            loginFormState.setValue(new LoginFormState(R.string.invalid_username, null));
        } else if (!isPasswordValid(password)) {
            loginFormState.setValue(new LoginFormState(null, R.string.invalid_password));
        } else {
            loginFormState.setValue(new LoginFormState(true));
        }
    }
 
    // A placeholder username validation check
    private boolean isUserNameValid(String username) {
        if (username == null) {
            return false;
        }
        if (username.contains("@")) {
            return Patterns.EMAIL_ADDRESS.matcher(username).matches();
        } else {
            return !username.trim().isEmpty();
        }
    }
 
    // A placeholder password validation check
    private boolean isPasswordValid(String password) {
        return password != null && password.trim().length() > 5;
    }
}