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計算距離的程式碼：

AGSSketchGraphicsLayer *measureSketchLayer = (AGSSketchGraphicsLayer *)[self.mapView mapLayerForName:MEASURE_SKETCH_LAYER];

AGSGeometry *sketchGeometry = measureSketchLayer.geometry;
AGSGeometryEngine *geometryEngine = [AGSGeometryEngine defaultGeometryEngine];

self.distance = [geometryEngine geodesicLengthOfGeometry:sketchGeometry inUnit:AGSSRUnitMeter];
 

計算面積的程式碼：

AGSSketchGraphicsLayer *measureSketchLayer = (AGSSketchGraphicsLayer *)[self.mapView mapLayerForName:MEASURE_SKETCH_LAYER];

AGSGeometry *sketchGeometry = measureSketchLayer.geometry;
AGSGeometryEngine *geometryEngine = [AGSGeometryEngine defaultGeometryEngine];

self.area = [geometryEngine shapePreservingAreaOfGeometry:sketchGeometry inUnit:AGSAreaUnitsSquareMeters];