用用户配置文件替换LoginFragment

问题描述

Android Studio： 您好，我在底部导航了三个片段，其中一个片段是一个LoginFragment。我想做的是，用用户个人资料替换登录片段，以便登录后无法再访问登录片段。我该怎么办？ （登录片段称为“ RegisterFragment”）

  public class RegisterFragment extends Fragment   {
    EditText emaiL;
    EditText passworD;
    Button buttonLogin;
    TextView textviewRegister;
    ProgressBar progressBar;
    FirebaseAuth fAuth;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState) {


        View v =inflater.inflate(R.layout.fragment_register,container,false);

        //initialize your view here for use view.findViewById("your view id")
        progressBar = (ProgressBar) v.findViewById(R.id.progressBar2);
        fAuth = FirebaseAuth.getInstance();
        emaiL = (EditText) v.findViewById(R.id.email);
        passworD = (EditText) v.findViewById(R.id.password);
        buttonLogin = (Button) v.findViewById(R.id.button_login);
        textviewRegister = (TextView) v.findViewById(R.id.textview_register);

        buttonLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String eMail = emaiL.getText().toString().trim();
                String passWord = passworD.getText().toString().trim();

                if (TextUtils.isEmpty(eMail)) {
                    emaiL.setError("Email is required");
                    return;
                }

                if (TextUtils.isEmpty(passWord)) {
                    passworD.setError("Password is required");
                    return;
                }

                if (passWord.length() < 6) {
                    passworD.setError("Password to short");
                    return;
                }

                progressBar.setVisibility(View.VISIBLE);

                fAuth.signInWithEmailAndPassword(eMail,passWord).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful());
                        Intent loginIntent = new Intent (getActivity().getApplicationContext(),LoginActivity.class);
                        startActivity(loginIntent);

                    }
                });

            }
        });


        textviewRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent registerIntent = new Intent (getActivity().getApplicationContext(),LoginActivity.class);
                startActivity(registerIntent);
            }
        });

        return v;

    }

}

解决方法

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