版本迭代需要集成百度地图,产品需求是每个大头针上方都需要固定展示大头针先关的信息,而在集成过程中,如果通过百度原装方法点击大头针,弹出气泡,会出现如下几个问题:

1.可以通过[mapView selectAnnotation:annotation animated:YES]方法在初始化时显示大头针气泡,但是从方法中很容易的看到,如果添加多个大头针,多个都需要初始化展示气泡,而它只能展示最后一个添加大头针的气泡,无法实现产品的需求

2.点击大头针,弹出气泡,点击第二个时第一个大头针的气泡会消失,归结起来就是使用气泡的方式显示大头针相关信息只会显示一条,不能同时显示多条信息

而针对产品的需求,需要显示多条大头针信息,百度地图sdk原装方法行不通,通过查阅相关资料,可以将大头针和气泡封装成一个整体,统一当成大头针使用,并取消点击大头针弹出气泡的方法,这样有一个小问题就是会出现大头针偏移的问题,需要用户根据需要自己调整大头针显示位置,设置偏移量;而如果需要点击大头针进行相关的操作,可以通过在大头针上方添加一个button,设定tag值绑定点击事件,下面是部分代码,可以参考:

在百度地图的代理方法中创建封装大头针

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

{

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

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

newAnnotationView.backgroundColor= [UIColorclearColor];

newAnnotationView.p_w_picpath= [UIImagep_w_picpathNamed:@"qiP.png"]; //设置大头针占位图片

newAnnotationView.frame=CGRectMake(-70, -35,140,70); //占位图片为空,需要强制设置大头针的范围

newAnnotationView.userInteractionEnabled=YES;

newAnnotationView.enabled=YES;

UIView*view = [[UIViewalloc]initWithFrame:CGRectMake(0,0,0,0)];

//气泡view

newAnnotationView.paopaoView= [[BMKActionPaopaoViewalloc]initWithCustomView:view];

UIImageView*paoPaoImage = [[UIImageViewalloc]init];

paoPaoImage.frame=CGRectMake(-45, -35,140,35);

paoPaoImage.p_w_picpath= [UIImagep_w_picpathNamed:@"qiPao.png"];

[newAnnotationViewaddSubview:paoPaoImage];

//气泡view上大头针的信息

UILabel*busNameLabel = [[UILabelalloc]initWithFrame:CGRectMake(-35, -35,50,30)];

busNameLabel.text=busNameStr;

busNameLabel.textColor= [UIColorwhiteColor];

busNameLabel.backgroundColor= [UIColorclearColor];

[newAnnotationViewaddSubview:busNameLabel];

UILabel*totalNumLab = [[UILabelalloc]initWithFrame:CGRectMake(25, -35,70,30)];

totalNumLab.text=bustotalNum;

totalNumLab.textAlignment=NSTextAlignmentCenter;

totalNumLab.textColor= [UIColorcolorWithRed:245.0/255green:153.0/255blue:38.0/255alpha:1];

totalNumLab.backgroundColor= [UIColorclearColor];

[newAnnotationViewaddSubview:totalNumLab];

UIImageView*schoolBusImage = [[UIImageViewalloc]init];

schoolBusImage.frame=CGRectMake(0,0,50,50);

schoolBusImage.p_w_picpath= [UIImagep_w_picpathNamed:@"schoolBus.png"];

[newAnnotationViewaddSubview:schoolBusImage];

//点击事件的button

UIButton *backgroundBtn = [UIButton buttonWithType:UIButtonTypeCustom];

backgroundBtn.frame = CGRectMake(-15, -10, 70, 70);

backgroundBtn.tag = busTag;

[newAnnotationView addSubview:backgroundBtn];

[backgroundBtn addTarget:self action:@selector(backgroundBtnClick:) forControlEvents:UIControlEventTouchUpInside];

return newAnnotationView;

}

return nil;

}

创建大头针,并设置大头针的数据,必须依次添加大头针到地图上,不能整体添加

for (int i = 0; i < self.schoolLeaderArr.count; i++) {

double schoolBusLatitude = [self.schoolLeaderArr[i][@"latitude"] doubleValue];

double schoolBusLongitude = [self.schoolLeaderArr[i][@"longitude"] doubleValue];

schoolBusLocation = CLLocationCoordinate2DMake(schoolBusLatitude, schoolBusLongitude);

schoolBusAnnotation = [[BMKPointAnnotation alloc]init];

schoolBusAnnotation.coordinate = schoolBusLocation;

busNameStr = [NSString stringWithFormat:@"%@",self.schoolLeaderArr[i][@"busName"]];

bustotalNum = [NSString stringWithFormat:@"%@/%@人",[NSStringstringWithFormat:@"%@",self.schoolLeaderArr[i][@"upNum"]],[NSString stringWithFormat:@"%@",self.schoolLeaderArr[i][@"totalNum"]]];

busTag = [self.schoolLeaderArr[i][@"busId"] intValue];

[self.annotationArr addObject:schoolBusAnnotation];

//创建一个大头针,添加一个,防止统一添加代理方法里面数据混乱

[self.mapView addAnnotation:schoolBusAnnotation];

}