Android Studio 版本 

Android Java MVP 模式 参考

模型层 model

public class User {
    private String email;
    private String password;

    public User(String email, String password) {
        this.email = email;
        this.password = password;
    }

    public String getEmail() {
        return email;
    }

    public String getPassword() {
        return password;
    }

    public boolean isValid() {
        return android.util.Patterns.EMAIL_ADDRESS.matcher(email