BROCKTON — In his first year, Brockton’s police chief has worked to fulfill promises to improve the quality of life in the former shoe manufacturing mecca that in ­recent years has been plagued by violence and crime.

Emanuel Gomes has carried out surprise street sweeps, rounding up hundreds of gang members, prostitutes, repeat criminal offenders, and drug dealers. At the same time, Gomes, 50, is adding 16 new patrol officers, while beefing up the number of officers assigned to Brockton’s public schools.