ios - Show Pins on Map for Current Region -

ios - Show Pins on Map for Current Region -

i working maps , have 2 one thousand latitudes , longitudes of federal republic of germany specific locations in csv file. take 3-4 mins drop pins on map when clicked.

i want map should open on gps values , show pins specific region. if user moves on map drops pins not wait in process have 3-4 mins.

i made selector , perform on background , utilize on -viewdidload method. utilize see map without wait

[self performselectorinbackground:@selector(readfileanddroppin) withobject:self];

ios annotations maps xcode4.5