About Baidu Map Peripheral Radar callback function will repeatedly invoke the problem of the solution

//Constructs the request parameter, where CENTERPT is its own position coordinate
radarnearbysearchoption option = Newradarnearbysearchoption (). Centerpt (PT). Pagenum (PageIndex). Radius (a);
//Initiate a query request
mmanager.nearbyinforequest (option);
@Override
publicvoidongetnearbyinfolist (radarnearbyresult result,
radarsearcherror Error) {
//TODO auto-generated method stub
if (Error = = Radarsearcherror.radar_no_error) {
Toast.maketext (radardemo.this, "Search peripheral Success", Toast.length_long)
. Show ();
//Get success, process data
} else {
//Get failed
Toast.maketext (radardemo.this, "Query perimeter Failure", Toast.length_long)
. Show ();
        }
}

The above function is Baidu map of the perimeter of the radar callback function, each time the surrounding location query request is called once, not repeated calls.

first of all, this problem, Baidu map perimeter radar heat around the request, will only callback once callback function, this is Baidu technician to answer.
However, when I debug the program, I find that once I query the perimeter, I call a callback function, and when I query the perimeter again, I may recall the callback function two times.
The cause of this problem is because after I complete the surrounding query, but also called the callback function, the surrounding location information is not cleared, so that the callback function will be the last query result callback once again, if the location information is cleared, the code is this:
radarsearchmanager.getinstance (). Removenearbyinfolistener (this);
radarsearchmanager.getinstance (). Clearuserinfo ();
radarsearchmanager.getinstance (). Destroy ();
OK, it took me a day to finish.

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About Baidu Map Peripheral Radar callback function will repeatedly invoke the problem of the solution