I'll try and explain this the best I can and I'm sure there will be a simple explanation to this.
I have a navigation menu with a logout option. The menu items are all in a switch case except for the logout which I have separated and used an IF statement. I got it to logout and go straight back to the login screen but I didn't think that was great for UX so I tried to add an alertdialog box to give the user the option to confirm whether or not they definitely want to logout or not.
I tried this (this is just the switch):
navigationView = findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case R.id.nav_home:
fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new HomeFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("");
item.setCheckable(true);
mDrawerLayout.closeDrawers();
break;
case R.id.nav_create_case:
fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new CreateCaseFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Create a Case");
item.setCheckable(true);
mDrawerLayout.closeDrawers();
break;
case R.id.nav_barcode_scanner:
fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new BarcodeScannerFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Barcode Scanner");
item.setCheckable(true);
mDrawerLayout.closeDrawers();
break;
case R.id.nav_checklists:
fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new ChecklistsFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Checklists");
item.setCheckable(true);
mDrawerLayout.closeDrawers();
break;
case R.id.nav_create_report:
fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.main_container, new CreateReportFragment());
fragmentTransaction.commit();
getSupportActionBar().setTitle("Create Report");
item.setCheckable(true);
mDrawerLayout.closeDrawers();
break;
}
if (item.getItemId() == R.id.nav_logout) {
final AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
alert.setTitle("Logout");
alert.setMessage("Are you sure you wish to logout?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
FirebaseAuth.getInstance().signOut();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Intent i2 = new Intent(MainActivity.this, MainActivity.class);
i2.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i2);
}
});
So with this, the logout button does nothing. Doesn't crash or anything. Just does nowt.
Any help greatly appreciated. Especially if I've done something stupid.
Thanks in advance
You are missing a show statement:
alert.show();
It's similar to a toast, you have to explicitly call show() to show the dialog
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