Have you repotted since it bloomed? is your pot too big? Is it getting too much moisture? Do you have plenty of perlite in your mix? Have you tried to start a leaf? AVs necessarily go dormant after blooming to store up new energy so they can bloom again. More info, and a pix might help.

Many of my violets routinely sit for months without re-blooming. Though they may look like they're just sitting, they are really growing and gathering energy for the next re-bloom.

If you have a healthy violet, sufficient and appropriate light, water, and nutrients (you will want to apply an African Violet fertilizer), you will, eventually, get blooms.

If all of that is in place, the SECRET to having constant AV bloom ... is to have MORE than (1) plant.

Some AVs bloom all the time, some are stubborn. All you can do is give it bright indirect light and make sure to feed it.