Are you on probation? The court might be trying to revoke your probation and put you in jail. If you are pre-trial and you miss a court date, the petition is trying to revoke your bond and hold you in jail until the outcome of the case.
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You have not indicated what sort of case you have. However, the petition will not be to revoke a hearing. More than likely there is a petition to revoke the prior disposition of your case, whether it is supervision or probation. You need a lawyer. The warrant needs to be quashed and recalled and a new court date set to hopefully get your case back on track. Missing a court date is not good. Your lawyer may be able to help you minimize the damages.