在iOS开发中，地图算是一个比较重要的模块。我们常用的地图有高德地图，百度地图，谷歌地图，对于中国而言，苹果公司已经不再使用谷歌地图，官方使用的是高德地图。下面将讲述一下百度地图开发过程中的一些小的知识点。
对于如何配置百度地图的开发环境，在此不再讲述，具体可以参考：http://developer.baidu.com/map/index.php?title=iossdk/guide/buildproject
百度地图iOS的API下载地址：http://developer.baidu.com/map/index.php?title=iossdk/sdkiosdev-download
关于百度地图的基本使用，我们可以参考百度地图的开发文档，在此主要总结一下开发文档中一些重要的知识点和延伸点。（地图版本IOS SDK 2.9.0）
首先说明一下百度地图开发中可能遇到的问题：
如何添加标注（系统标注和自定义标注）
1 //添加标记 2 -(void)viewDidAppear:(BOOL)animated 3 { 4 /* 5 for (int i = 0; i < 3; i++) { 6 BMKPointAnnotation* annotation = [[BMKPointAnnotation alloc]init]; 7 CLLocationCoordinate2D coor; 8 coor.latitude = 39.915 + i*2; 9 coor.longitude = 116.404 + i*2;10 annotation.coordinate = coor;11 annotation.title = @"这里是北京";12 [myMapView addAnnotation:annotation];13 }14 */15 BMKPointAnnotation* annotation = [[BMKPointAnnotation alloc]init];16 CLLocationCoordinate2D coor;17 coor.latitude = 39.915;18 coor.longitude = 116.404;19 annotation.coordinate = coor;20 annotation.title = @"这里是北京";21 annotation.subtitle = @"1";22 //[myMapView addAnnotation:annotation];23 24 BMKPointAnnotation* annotation1 = [[BMKPointAnnotation alloc]init];25 CLLocationCoordinate2D coor1;26 coor1.latitude = 38.915;27 coor1.longitude = 113.404 + 2;28 annotation1.coordinate = coor1;29 annotation1.title = @"这里也是北京";30 annotation1.subtitle = @"2";31 //[myMapView addAnnotation:annotation1];32 33 BMKPointAnnotation* annotation2 = [[BMKPointAnnotation alloc]init];34 CLLocationCoordinate2D coor2;35 coor2.latitude = 38.915;36 coor2.longitude = 119.404 + 2;37 annotation2.coordinate = coor2;38 annotation2.title = @"这里同样是北京";39 annotation2.subtitle = @"3";40 //[myMapView addAnnotation:annotation2];41 42 NSArray *arr = [NSArray arrayWithObjects:annotation,annotation1,annotation2, nil];43 [myMapView addAnnotations:arr];44 }45 46 -(BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation47 {48 if ([annotation isKindOfClass:[BMKPointAnnotation class]])49 {50 BMKPinAnnotationView *newAnnotationView = (BMKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"AnnotationView"];51 newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"AnnotationView"];52 newAnnotationView.pinColor = BMKPinAnnotationColorPurple;53 newAnnotationView.animatesDrop = YES;// 设置该标注点动画显示54 return newAnnotationView;55 }56 return nil;57 }
系统标记
如何自定义大头针
自定义大头针就是改变大头针的样式，如你想使用自己的图片代替上面显示的样式，代码实现跟上面的代码基本一样。只是在上面代理实现的代码中加入下面的代码即可。 1 newAnnotationView.image
= [UIImage imageNamed:@"2"]; （图片显示的大小，可以通过newAnnotationView的frame设定） 如何修改气泡样式在气泡上默认是可以显示两行信息，一个title，一个subtitle，在此仅修改气泡的样式，如边框大小，字体，等基本信息，没有改变总体布局。
1 -(BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation 2 { 3 if ([annotation isKindOfClass:[BMKPointAnnotation class]]) 4 { 5 BMKPinAnnotationView *newAnnotationView = (BMKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"AnnotationView"]; 6 newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"AnnotationView"]; 7 newAnnotationView.pinColor = BMKPinAnnotationColorPurple; 8 newAnnotationView.animatesDrop = YES;// 设置该标注点动画显示 9 10 UIView *view = [[UIView alloc]init];11 view.frame = CGRectMake(0, 0, 100, 60);12 view.backgroundColor = [UIColor greenColor];13 [view.layer setMasksToBounds:YES];14 [view.layer setCornerRadius:3];15 view.alpha = 0.9;16 17 UILabel *label1 = [[UILabel alloc]init];18 label1.frame = CGRectMake(0, 0, 100, 30);19 label1.text = annotation.title;20 label1.numberOfLines = 0;21 label1.font = [UIFont systemFontOfSize:12];22 label1.textColor = [UIColor blackColor];23 [view addSubview:label1];24 25 UILabel *label2 = [[UILabel alloc]init];26 label2.frame = CGRectMake(0, 30, 100, 30);27 label2.text = annotation.subtitle;28 label2.numberOfLines = 0;29 label2.font = [UIFont systemFontOfSize:10];30 label2.textColor = [UIColor lightGrayColor];31 [view addSubview:label2];32 33 BMKActionPaopaoView *pView = [[BMKActionPaopaoView alloc]initWithCustomView:view];34 pView.frame = CGRectMake(0, 0, 100, 60);35 ((BMKPinAnnotationView *)newAnnotationView).paopaoView = pView;36 return newAnnotationView;37 }38 return nil;39 }
简单定义气泡样式
如果我们想要修改气泡的布局怎样处理呢？
因为系统默认的一个是坐标，一个标题，一个子标题，我们想要按照自己的方式布局弹出的气泡，我们需要做什么工作呢?
首先系统提供BMKPointAnnotation的方法不够我们使用,我们需要继承这个类，假如新类为myPoint,添加一些新的属性。比如这个类,我们需要添加三个属性。
分别是NSString *imgName ; NSString *placeName; NSString *idNum;
接下来我们我们需要自定义气泡，气泡本身是一个UIView,我们可以在继承于UIView,创建一个子类myPaopao;在myPaopao里面要添加三个控件，显示上面定义的三个属性。
1 #import <UIKit/UIKit.h>2 3 @interface myPaopao : UIView4 @property(nonatomic,retain)UIImageView *imgView;5 @property(nonatomic,retain) UILabel *placeName;6 @property(nonatomic,retain) UILabel *idNum;7 8 @end
myPaopao.h
1 #import "myPaopao.h" 2 3 @implementation myPaopao 4 5 -(instancetype)initWithFrame:(CGRect)frame 6 { 7 self = [super initWithFrame:frame]; 8 if (self) 9 {10 self.frame = CGRectMake(0, 0, 150, 60);11 self.backgroundColor = [UIColor whiteColor];12 13 _imgView = [[UIImageView alloc]init];14 _imgView.frame = CGRectMake(0, 0, 60, 60);15 [self addSubview:_imgView];16 17 _placeName = [[UILabel alloc]init];18 _placeName.frame = CGRectMake(60, 0, 90, 30);19 _placeName.font = [UIFont systemFontOfSize:12];20 [self addSubview:_placeName];21 22 _idNum = [[UILabel alloc]init];23 _idNum.frame = CGRectMake(60, 30, 90, 30);24 [self addSubview:_idNum];25 26 }27 return self;28 }29 @end
myPaopao.m
1 //添加标记 2 -(void)viewDidAppear:(BOOL)animated 3 { 4 myPoint* annotation = [[myPoint alloc]init]; 5 CLLocationCoordinate2D coor; 6 coor.latitude = 39.915; 7 coor.longitude = 116.404; 8 annotation.coordinate = coor; 9 annotation.imgName = @"1.jpg";10 annotation.placeName = @"这里是北京";11 annotation.idNum = @"1";12 [myMapView addAnnotation:annotation];13 14 myPoint* annotation1 = [[myPoint alloc]init];15 CLLocationCoordinate2D coor1;16 coor1.latitude = 38.915;17 coor1.longitude = 113.404 + 2;18 annotation1.coordinate = coor1;19 annotation1.imgName = @"2.jpg";20 annotation1.placeName = @"这里也是北京";21 annotation1.idNum = @"2";22 [myMapView addAnnotation:annotation1];23 24 }25 -(BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation26 {27 if ([annotation isKindOfClass:[myPoint class]])28 {29 myPoint *myAnnotation = (myPoint *)annotation;30 31 BMKPinAnnotationView *newAnnotationView = (BMKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"AnnotationView"];32 newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"AnnotationView"];33 newAnnotationView.pinColor = BMKPinAnnotationColorPurple;34 newAnnotationView.animatesDrop = YES;// 设置该标注点动画显示35 myPaopao *paopapo = [[myPaopao alloc]init];36 37 paopapo.imgView.image = [UIImage imageNamed:myAnnotation.imgName];38 paopapo.placeName.text = myAnnotation.placeName;39 paopapo.idNum.text = myAnnotation.idNum;40 BMKActionPaopaoView *pView = [[BMKActionPaopaoView alloc]initWithCustomView:paopapo];41 ((BMKPinAnnotationView *)newAnnotationView).paopaoView = pView;42 return newAnnotationView;43 }44 return nil;45 }
实现代码
如果有需要，我们还可以添加一个按钮，跳转到详情界面，添加按钮的方法，与上面的方法相同，在此
点聚合功能
点聚合功能是v2.9.0新增加的一个功能，如果在一个区域有大量的点，会产生覆盖现象，点聚合功能可以实现将很多点聚合到一个点上，通过缩放比例，可以显示更多点或聚合点。我们在下载SDK的时候，会带有一个Demo,从Demo中我们可以找到相应的实现代码。在开发文档中给出了我们核心代码：
折线（从一位置到另一位置的线段）
代码段：
1 //添加标记 2 -(void)viewDidAppear:(BOOL)animated 3 { 4 CLLocationCoordinate2D coors[2] = {0}; 5 coors[0].latitude = 39.315; 6 coors[0].longitude = 116.304; 7 coors[1].latitude = 30.515; 8 coors[1].longitude = 116.504; 9 BMKPolyline *polyline = [BMKPolyline polylineWithCoordinates:coors count:2];10 [myMapView addOverlay:polyline];11 }12 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay13 {14 NSLog(@"sdf");15 if ([overlay isKindOfClass:[BMKPolyline class]])16 {17 BMKPolylineView *polylineView = [[BMKPolylineView alloc]initWithPolyline:overlay];18 polylineView.strokeColor = [[UIColor greenColor]colorWithAlphaComponent:1];19 polylineView.lineWidth = 5.0;20 return polylineView;21 }22 return nil;23 }
折线
分段纹理分段折线
代码段：
1 //添加标记 2 -(void)viewDidAppear:(BOOL)animated 3 { 4 CLLocationCoordinate2D coords[5] = {0}; 5 coords[0].latitude = 39.965; 6 coords[0].longitude = 116.404; 7 coords[1].latitude = 39.925; 8 coords[1].longitude = 116.454; 9 coords[2].latitude = 39.955;10 coords[2].longitude = 116.494;11 coords[3].latitude = 39.905;12 coords[3].longitude = 116.654;13 coords[4].latitude = 39.965;14 coords[4].longitude = 116.704;15 //构建分段文理索引数组16 NSArray *textureIndex = [NSArray arrayWithObjects:17 [NSNumber numberWithInt:0],18 [NSNumber numberWithInt:1],19 [NSNumber numberWithInt:2],20 [NSNumber numberWithInt:1], nil];21 BMKPolyline *polyline = [BMKPolyline polylineWithCoordinates:coords count:5 textureIndex:textureIndex];22 [myMapView addOverlay:polyline];23 }24 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay25 {26 if ([overlay isKindOfClass:[BMKPolyline class]])27 {28 BMKPolylineView* polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay];29 polylineView.lineWidth = 5;30 polylineView.isFocus = YES;// 是否分段纹理绘制（突出显示），默认YES31 //加载分段纹理图片，必须否则不能进行分段纹理绘制32 [polylineView loadStrokeTextureImages:33 [NSArray arrayWithObjects:[UIImage imageNamed:@"1.jpg"],34 [UIImage imageNamed:@"2.jpg"],35 [UIImage imageNamed:@"3.jpg"],nil]];36 return polylineView;37 }38 return nil;39 }
纹理折线
分段颜色分段折线
代码段：
1 -(void)viewDidAppear:(BOOL)animated 2 { 3 CLLocationCoordinate2D coords[5] = {0}; 4 coords[0].latitude = 39.965; 5 coords[0].longitude = 116.404; 6 coords[1].latitude = 39.925; 7 coords[1].longitude = 116.454; 8 coords[2].latitude = 39.955; 9 coords[2].longitude = 116.494;10 coords[3].latitude = 39.905;11 coords[3].longitude = 116.654;12 coords[4].latitude = 39.965;13 coords[4].longitude = 116.704;14 //构建分段文理索引数组15 NSArray *colorIndexs = [NSArray arrayWithObjects:16 [NSNumber numberWithInt:0],17 [NSNumber numberWithInt:1],18 [NSNumber numberWithInt:2],19 [NSNumber numberWithInt:1], nil];20 BMKPolyline *polyline = [BMKPolyline polylineWithCoordinates:coords count:5 textureIndex:colorIndexs];21 [myMapView addOverlay:polyline];22 }23 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay24 {25 if ([overlay isKindOfClass:[BMKPolyline class]])26 {27 BMKPolylineView* polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay];28 polylineView.lineWidth = 5;29 // 使用分段颜色绘制时，必须设置（内容必须为UIColor）30 polylineView.colors = [NSArray arrayWithObjects:[UIColor greenColor], [UIColor redColor], [UIColor yellowColor], nil];31 return polylineView;32 }33 return nil;34 }
颜色分段
弧线（起点，途经点，终点）
代码段：
1 -(void)viewDidAppear:(BOOL)animated 2 { 3 CLLocationCoordinate2D coords[3] = {0}; 4 coords[0].latitude = 39.9374; 5 coords[0].longitude = 116.350; 6 coords[1].latitude = 39.9170; 7 coords[1].longitude = 116.360; 8 coords[2].latitude = 39.9479; 9 coords[2].longitude = 116.373;10 BMKArcline *arcline = [BMKArcline arclineWithCoordinates:coords];11 [myMapView addOverlay:arcline];12 }13 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay14 {15 if ([overlay isKindOfClass:[BMKArcline class]])16 {17 NSLog(@"adf");18 BMKArclineView* arclineView = [[BMKArclineView alloc] initWithOverlay:overlay];19 arclineView.strokeColor = [[UIColor blackColor]colorWithAlphaComponent:0.5];20 arclineView.lineWidth = 5.0;21 return arclineView;22 }23 return nil;24 }
弧线
多边形
代码段：
1 -(void)viewDidAppear:(BOOL)animated 2 { 3 CLLocationCoordinate2D coords[3] = {0}; 4 coords[0].latitude = 39; 5 coords[0].longitude = 116; 6 coords[1].latitude = 38; 7 coords[1].longitude = 115; 8 coords[2].latitude = 38; 9 coords[2].longitude = 117;10 BMKPolygon *ploygon = [BMKPolygon polygonWithCoordinates:coords count:3];11 [myMapView addOverlay:ploygon];12 }13 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay14 {15 if ([overlay isKindOfClass:[BMKPolygon class]])16 {17 BMKPolygonView* polygonView = [[BMKPolygonView alloc] initWithOverlay:overlay];18 polygonView.strokeColor = [[UIColor purpleColor] colorWithAlphaComponent:1];19 polygonView.fillColor = [[UIColor cyanColor] colorWithAlphaComponent:0.2];20 polygonView.lineWidth = 5.0;21 22 return polygonView;23 }24 return nil;25 }
多边形
圆
代码段：
1 -(void)viewDidAppear:(BOOL)animated 2 { 3 CLLocationCoordinate2D coor; 4 coor.latitude = 39.915; 5 coor.longitude = 116.404; 6 BMKCircle* circle = [BMKCircle circleWithCenterCoordinate:coor radius:5000]; 7 [myMapView addOverlay:circle]; 8 } 9 -(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay10 {11 if ([overlay isKindOfClass:[BMKCircle class]])12 {13 BMKCircleView* circleView = [[BMKCircleView alloc] initWithOverlay:overlay];14 circleView.fillColor = [[UIColor cyanColor] colorWithAlphaComponent:0.5];15 circleView.strokeColor = [[UIColor orangeColor] colorWithAlphaComponent:0.5];16 circleView.lineWidth = 10.0;17 18 return circleView;19 }20 return nil;21 }
圆
时间： 2024-07-30 08:24:15