iPhone MapKit 让地图在最小的范围内显示这两个已知点

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Courier} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Courier; min-height: 14.0px} span.s1 {color: #742ea8} span.s2 {color: #4300d7} span.Apple-tab-span {white-space:pre}

MKMapPoint point1 = MKMapPointForCoordinate(coordinate1);
    MKMapPoint point2 = MKMapPointForCoordinate(coordinate2);
    MKMapRect rect1 = MKMapRectMake(point1.x, point1.y, 0, 0);
    MKMapRect rect2 = MKMapRectMake(point2.x, point2.y, 0, 0);

    MKMapRect r = MKMapRectUnion(rect1, rect2);

    [self._mapView setVisibleMapRect:r animated:YES]; 这里主要是MKMapRectUnion的使用. CGRectUnion(rect1, rect2).