User Authentication

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Plan

Free

Country

United States 

Device

Android 14 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyApplication"
        tools:targetApi="31">
        <activity
            android:name=".ui.login.LoginActivity"
            android:exported="true"
            android:label="@string/title_activity_login">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>
        </activity>
    </application>

</manifest>

package com.example.myapplication.ui.login;

import android.app.Activity;

import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;

import android.content.Intent;
import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.annotation.StringRes;
import androidx.appcompat.app.AppCompatActivity;

import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.example.myapplication.R;
import com.example.myapplication.ui.login.LoginViewModel;
import com.example.myapplication.ui.login.LoginViewModelFactory;
import com.example.myapplication.databinding.ActivityLoginBinding;
import com.spotify.sdk.android.auth.AuthorizationClient;
import com.spotify.sdk.android.auth.AuthorizationRequest;
import com.spotify.sdk.android.auth.AuthorizationResponse;

public class LoginActivity extends AppCompatActivity
{

    private LoginViewModel loginViewModel;
    private ActivityLoginBinding binding;

    //1st part of Logging In - Did not finish the Fingerprint so do not know if works

    /**
     * Request code will be used to verify if result comes from
     * the login activity. Can be set to any integer.
     */
    private static final int REQUEST_CODE = 1337;
    private static final String REDIRECT_URI = "";
    private static final String CLIENT_ID = "";

    private void startSpotifyLogin()
    {
        try {
            AuthorizationRequest.Builder builder =
                    new AuthorizationRequest.Builder(CLIENT_ID,
                            AuthorizationResponse.Type.TOKEN, REDIRECT_URI);
            builder.setScopes(new String[]{"user-read-private", "playlist-read"});
            AuthorizationRequest request = builder.build();

            AuthorizationClient.openLoginActivity(this, REQUEST_CODE, request);
            Log.d("Did it work","Yes");
        } catch (Exception e){
            e.getMessage();
            Log.d("Did it work","No");
        }
    }

    /**
     *  override onActivityResult
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);

        // Check if result comes from the correct activity
        if (requestCode == REQUEST_CODE) {
            AuthorizationResponse response = AuthorizationClient.getResponse(resultCode, intent);
            Log.d("authentication","processing");
            switch (response.getType()) {
                // Response was successful and contains auth token
                case TOKEN:
                    // Handle successful response
                    String accessToken = response.getAccessToken();
                    // Perform any necessary action with the access token, e.g., fetch user data
                    intent = new Intent(this, com.spotify.sdk.android.auth.LoginActivity.class);
                    intent.putExtra("access_token", accessToken);
                    startActivity(intent);
                    Toast.makeText(this, "Login successful!", Toast.LENGTH_SHORT).show();
                    Log.d("authentication","worked");
                    break;
                // Auth flow returned an error
                case ERROR:
                    // Handle error response
                    Log.d("authentication","did not worked");
                    Toast.makeText(this, "Login failed: " + response.getError(), Toast.LENGTH_SHORT).show();
                    break;

                    // Most likely auth flow was cancelled
                default:
                    // Handle other cases
                    Log.d("authentication","function is running");
                    break;

            }
        }
    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        binding = ActivityLoginBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        loginViewModel = new ViewModelProvider(this, new LoginViewModelFactory())
                .get(LoginViewModel.class);

        final EditText usernameEditText = binding.username;
        final EditText passwordEditText = binding.password;
        final Button loginButton = binding.login;
        final ProgressBar loadingProgressBar = binding.loading;

        loginViewModel.getLoginFormState().observe(this, new Observer<LoginFormState>() {
            @Override
            public void onChanged(@Nullable LoginFormState loginFormState) {
                if (loginFormState == null) {
                    return;
                }
                loginButton.setEnabled(loginFormState.isDataValid());
                if (loginFormState.getUsernameError() != null) {
                    usernameEditText.setError(getString(loginFormState.getUsernameError()));
                }
                if (loginFormState.getPasswordError() != null) {
                    passwordEditText.setError(getString(loginFormState.getPasswordError()));
                }
            }
        });

        loginViewModel.getLoginResult().observe(this, new Observer<LoginResult>() {
            @Override
            public void onChanged(@Nullable LoginResult loginResult) {
                if (loginResult == null) {
                    return;
                }
                loadingProgressBar.setVisibility(View.GONE);
                if (loginResult.getError() != null) {
                    showLoginFailed(loginResult.getError());
                }
                if (loginResult.getSuccess() != null) {
                    updateUiWithUser(loginResult.getSuccess());
                }
                setResult(Activity.RESULT_OK);

                //Complete and destroy login activity once successful
                finish();
            }
        });

        TextWatcher afterTextChangedListener = new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                // ignore
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                // ignore
            }

            @Override
            public void afterTextChanged(Editable s) {
                loginViewModel.loginDataChanged(usernameEditText.getText().toString(),
                        passwordEditText.getText().toString());
            }
        };
        usernameEditText.addTextChangedListener(afterTextChangedListener);
        passwordEditText.addTextChangedListener(afterTextChangedListener);
        passwordEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {

            @Override
            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                if (actionId == EditorInfo.IME_ACTION_DONE) {
                    loginViewModel.login(usernameEditText.getText().toString(),
                            passwordEditText.getText().toString());
                }
                return false;
            }
        });

        loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startSpotifyLogin();
            }
        });
    }

    private void updateUiWithUser(LoggedInUserView model) {
        String welcome = getString(R.string.welcome) + model.getDisplayName();
        // TODO : initiate successful logged in experience
        Toast.makeText(getApplicationContext(), welcome, Toast.LENGTH_LONG).show();
    }

    private void showLoginFailed(@StringRes Integer errorString) {
        Toast.makeText(getApplicationContext(), errorString, Toast.LENGTH_SHORT).show();
    }
}

My Question or Issue : 

So my problem lies within actually clicking on the login button and connecting that button to my desired dashboard. When my Android studio runs, everything works perfectly when I click on the button, but when it transfers to the actual website it messes up. It just gives me a blank screen and nothing else. I tried everything and made sure that my redirect URI was connected to the dashboard and it was. I tried the log.d function in Android Studio and it worked, and I tried making sure that the redirect URI was working. Every time though, I would just get the same blank screen when I click on my login button. Some of the things that I did not add were adding the fingerprint and the package and I did not try the openToBrowser method instead. Any recommendations would be greatly appreciated because I was working on this yesterday for like 3 hours and nothing was working.

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Even if there is another way to do the same thing I am all up for suggestions. Thank you for the responses in advance.