Is there a limit to the amount of displayable Toasts?

Question

In the MainActivity I need to show all files returned by getApplicationContext().fileList() but only about the first 50 Toast will be displayed.

There is some limit for that?

String[] fileList = getApplicationContext().fileList();

Toast.makeText(getApplicationContext(), fileList.length + " files", Toast.LENGTH_LONG).show();

for (String fileName : fileList)
{
    Toast.makeText(getApplicationContext(), fileName, Toast.LENGTH_LONG).show();
}

Thanks

Answer 1

Update February 2023

A new limit of 5 queued toasts was added in Android 12, preventing to queue too many toasts.

// To limit bad UX of seeing a toast many seconds after if was triggered.
static final int MAX_PACKAGE_TOASTS = 5;

if (count >= MAX_PACKAGE_TOASTS) {
    Slog.e(TAG, "Package has already queued " + count
            + " toasts. Not showing more. Package=" + pkg);
    return;
}

Also the previous limit of 50 toasts was changed to 25 in Android 10.

static final int MAX_PACKAGE_NOTIFICATIONS = 25;

Original answer

Yes, toasts are queued and there is a limit of 50 toasts, you can see the check for it in NotificationManagerService class

if (count >= MAX_PACKAGE_NOTIFICATIONS) {
    Slog.e(TAG, "Package has already posted " +
           + " toasts. Not showing more. Package=" + pkg);
    return;
}

And MAX_PACKAGE_NOTIFICATIONS is declared as

static final int MAX_PACKAGE_NOTIFICATIONS = 50;