iOS成长之路 百度地图覆盖物

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导入百度地图

初始化百度地图

    mapView  = [[BMKMapView alloc]initWithFrame:(CGRect){0,0,ViewWith,ViewHight}];

    [self.view addSubview:mapView];

mapView.delegate = self;

添加线和坐标物

allarray  里面是 经纬度 

 if (allarray.count > 2) {

        CLLocationCoordinate2D coords[2];

        for (NSInteger i = 0; i < (allarray.count - 1); i++) {

            NSString *str = allarray[i];

            NSArray *temp = [str componentsSeparatedByString:@","];

            NSString *lon = temp[0];

            NSString *lat = temp[1];

            BMKPointAnnotation* annotation1 = [[BMKPointAnnotation alloc]init];

            CLLocationCoordinate2D coor1;

            coor1.latitude = [lat doubleValue];

            coor1.longitude = [lon doubleValue];

            annotation1.coordinate = coor1;

            annotation1.title =[NSString stringWithFormat:@"%@",placename[i]];

            [mapView addAnnotation:annotation1];

            NSLog(@"%@--%@",lon,lat);

//            CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake([lon doubleValue], [lat doubleValue]);

            coords[0].latitude = [lat doubleValue];

            coords[0].longitude = [lon doubleValue];

            _number = i;

            NSString *str2 = allarray[i + 1];

            NSArray *temp2 = [str2 componentsSeparatedByString:@","];

            NSString *lon2 = temp2[0];

            NSString *lat2 = temp2[1];

            NSLog(@"%@--%@",lon2,lat2);

//            CLLocationCoordinate2D coordinate2 = CLLocationCoordinate2DMake([lat2 doubleValue], [lon2 doubleValue]);

            coords[1].latitude = [lat2 doubleValue];

            coords[1].longitude = [lon2 doubleValue];

            BMKPolyline *myPolyline = [BMKPolyline polylineWithCoordinates:coords count:2];

            [mapView addOverlay:myPolyline];

        }

    }

自定义坐标物

这个代理是线的

- (BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id <BMKOverlay>)overlay{

    if ([overlay isKindOfClass:[BMKPolyline class]]){

        BMKPolylineView* polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay] ;

        polylineView.strokeColor = [[UIColor purpleColor] colorWithAlphaComponent:1];

        polylineView.lineWidth = 5.0;

        return polylineView;

    }

    return nil;

}

这个代理是坐标物的

- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id <BMKAnnotation>)annotation

{

    if ([annotation isKindOfClass:[BMKPointAnnotation class]]) {

//         UIView *viewForImage=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 132, 64)];

  BMKPinAnnotationView *newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"myAnnotation"];

        newAnnotationView.pinColor = BMKPinAnnotationColorPurple;

//        newAnnotationView.animatesDrop = YES;// 设置该标注点动画显示

//        

        UIView *viewForImage=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 45, 45)];

        UIImageView *imageview=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 45, 45)];

        [imageview setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d",_number-1]]];

        [viewForImage addSubview:imageview];

        UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(32, 0, 100, 64)];

        label.text=@"陈双超";

        label.backgroundColor=[UIColor clearColor];

        [viewForImage addSubview:label];

        newAnnotationView.image=[self getImageFromView:viewForImage];

        return newAnnotationView;

    }

    return nil;

}

这个是把你定义的view变为图片 

-(UIImage *)getImageFromView:(UIView *)view{

    UIGraphicsBeginImageContext(view.bounds.size);

    [view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return image;

}

iOS成长之路 百度地图覆盖物

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原文地址：http://www.cnblogs.com/Yangboskt/p/5486465.html