I'm just learning to create android apps. I created two different apps, one for login using email and google using firebase and one to upload images into firebase storage. Both of these work individually. Now I'm trying to combine them. I've made the login part as SignUpActivity which when the user runs and logs-in successfully, should start the main activity, and go to my upload images part of the code, which I've coded under MainActivity.
I've tried various methods to execute this but I can't seem to get the intent part right. Additionally I can't seem to make the signupactivity the first activity. I've tried to go to app and editing the configuration to make signupactivity as my starting activity. but that crashes the app.
code flow: sign-up/login -> upload i.e SignUpActivity -> MainActivity
SignUpActivity (part of it)
public class SignUpActivity extends AppCompatActivity implements View.OnClickListener{
private static final String TAG = "GoogleActivity";
private static final int RC_SIGN_IN = 9001;
GoogleSignInClient mGoogleSignInClient;
private FirebaseAuth mAuth;
private String result;
private Object MainActivity;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.sign_in_button).setOnClickListener(this);
findViewById(R.id.signOutButton).setOnClickListener(this);
// Configure Google Sign In
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
// for the requestIdToken, use getString(R.string.default_web_client_id), this is in the values.xml file that
// is generated from your google-services.json file (data from your firebase project), uses the google-sign-in method
// web api key
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
// Build a GoogleSignInClient with the options specified by gso.
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
// Set the dimensions of the sign-in button.
SignInButton signInButton = findViewById(R.id.sign_in_button);
signInButton.setSize(SignInButton.SIZE_WIDE);
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
}
private void updateUI(boolean signedIn) {
if (signedIn) {
findViewById(R.id.sign_in_button).setVisibility(View.GONE);
Intent signInToMain = new Intent("my.app.master.MainActivity");
startActivity(signInToMain);
} else {
findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
}
}
@Override
public void onStart() {
super.onStart();
// Check if the user is signed in (non-null) and update UI accordingly.
FirebaseUser currentUser = mAuth.getCurrentUser();
if (currentUser != null) {
Log.d(TAG, "Currently Signed in: " + currentUser.getEmail());
Toast.makeText(SignUpActivity.this, "Currently Logged in: " + currentUser.getEmail(), Toast.LENGTH_LONG).show();
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
if (requestCode == RC_SIGN_IN) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
Toast.makeText(this, "Google Sign in Succeeded", Toast.LENGTH_LONG).show();
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
Log.w(TAG, "Google sign in failed", e);
Toast.makeText(this, "Google Sign in Failed " + e, Toast.LENGTH_LONG).show();
}
}
if (requestCode == 1234) {
// Successfully signed in
if (resultCode == RESULT_OK) {
// Successfully signed in
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
Toast.makeText(getApplicationContext(), "Successfully signed in", Toast.LENGTH_SHORT).show();
}
} else {
// Sign in failed. If response is null the user canceled the sign-in flow using the back button. Otherwise check
// response.getError().getErrorCode() and handle the error.
// ...
Toast.makeText(getApplicationContext(), "Unabled to Sign in", Toast.LENGTH_SHORT).show();
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
FirebaseUser user = mAuth.getCurrentUser();
Log.d(TAG, "signInWithCredential:success: currentUser: " + user.getEmail());
Toast.makeText(SignUpActivity.this, "Firebase Authentication Succeeded ", Toast.LENGTH_LONG).show();
} else {
// If sign in fails, display a message to the user.
Log.w(TAG, "signInWithCredential:failure", task.getException());
Toast.makeText(SignUpActivity.this, "Firebase Authentication failed:" + task.getException(), Toast.LENGTH_LONG).show();
}
}
});
}
public void signInToGoogle(){
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
}
Manifest
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".SignUpActivity"></activity>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".ImagesActivity"></activity>
</application>
P.S: I know there are unnecessary parts of the code to implement something simple. but I've just started coding on an android studio and am still learning.
