简介
关于苹果系统地图的使用，大多数人都不陌生，但是对于地图的灵活运用，好多都是现从网上搜索。我这里简单的整理下JackXu写的一个对于地图的总体运用，功能如图所示
Paste_Image.png
我这里就简单的介绍下，功能代码以上传，你们可以直接 下载Demo
1、显示地图
mapView = [[MKMapView alloc] initWithFrame:self.view.frame];
[self.view addSubview:mapView];
2、显示指定区域
//设置显示重庆理工大学(29.454686, 106.529259)
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
3、显示3D地图
- (void)viewDidLoad {
[super viewDidLoad];
//设置显示重庆理工大学(29.454686, 106.529259)
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
// Create a coordinate structure for the location.
CLLocationCoordinate2D ground = CLLocationCoordinate2DMake(29.454686, 106.529259);
// Create a coordinate structure for the point on the ground from which to view the location.
CLLocationCoordinate2D eye = CLLocationCoordinate2DMake(29.545686, 106.628259);
// Ask Map Kit for a camera that looks at the location from an altitude of 100 meters above the eye coordinates.
MKMapCamera *myCamera = [MKMapCamera cameraLookingAtCenterCoordinate:ground fromEyeCoordinate:eye eyeAltitude:100];
// Assign the camera to your map view
self.mapView.camera = myCamera;
}
4、滑动和缩放地图
- (void)viewDidLoad {
[super viewDidLoad];
//设置显示重庆理工大学(29.454686, 106.529259)
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
[self performSelector:@selector(pan) withObject:nil afterDelay:3.f];
[self performSelector:@selector(zoom) withObject:nil afterDelay:6.f];
}
//往左移动当前地图宽度的一半的距离
-(void)pan{
CLLocationCoordinate2D mapCenter = self.mapView.centerCoordinate;
mapCenter = [self.mapView convertPoint:
CGPointMake(1, (self.mapView.frame.size.width/2.0))
toCoordinateFromView:self.mapView];
[self.mapView setCenterCoordinate:mapCenter animated:YES];
}
//放大
-(void)zoom{
MKCoordinateRegion theRegion = self.mapView.region;
// Zoom in
theRegion.span.longitudeDelta *= 0.5;
theRegion.span.latitudeDelta *= 0.5;
[self.mapView setRegion:theRegion animated:YES];
}
5、显示用户当前位置
- (void)viewDidLoad {
[super viewDidLoad];
//在Info.plist右键，Add Row,添加Key为NSLocationAlwaysUsageDescription
[self initLocation];
self.mapView.showsUserLocation = YES;
// Do any additional setup after loading the view.
}
-(void)initLocation {
if (nil == locationManager)
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){
[locationManager requestWhenInUseAuthorization];
}
if(![CLLocationManager locationServicesEnabled]){
NSLog(@"请开启定位:设置 > 隐私 > 位置 > 定位服务");
}
if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
[locationManager requestAlwaysAuthorization]; // 永久授权
[locationManager requestWhenInUseAuthorization]; //使用中授权
}
[locationManager startUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations {
// If it's a relatively recent event, turn off updates to save power.
CLLocation* location = [locations lastObject];
NSLog(@"didUpdateLocations:%@",location);
}
6、创建一个地图快照
- (void)viewDidLoad {
[super viewDidLoad];
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
//3s后创建快照
[self performSelector:@selector(shot) withObject:nil afterDelay:3.f];
}
-(void)shot{
MKMapSnapshotOptions *options = [[MKMapSnapshotOptions alloc] init];
options.region = self.mapView.region;
options.size = self.mapView.frame.size;
options.scale = [[UIScreen mainScreen] scale];
MKMapSnapshotter *snapshotter = [[MKMapSnapshotter alloc] initWithOptions:options];
// Initialize the semaphore to 0 because there are no resources yet.
dispatch_semaphore_t snapshotSem = dispatch_semaphore_create(0);
// Get a global queue (it doesn't matter which one).
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
// Create variables to hold return values. Use the __block modifier because these variables will be modified inside a block.
__block MKMapSnapshot *mapSnapshot = nil;
__block NSError *error = nil;
// Start the asynchronous snapshot-creation task.
[snapshotter startWithQueue:queue
completionHandler:^(MKMapSnapshot *snapshot, NSError *e) {
mapSnapshot = snapshot;
error = e;
// The dispatch_semaphore_signal function tells the semaphore that the async task is finished, which unblocks the main thread.
dispatch_semaphore_signal(snapshotSem);
}];
// On the main thread, use dispatch_semaphore_wait to wait for the snapshot task to complete.
dispatch_semaphore_wait(snapshotSem, DISPATCH_TIME_FOREVER);
if (error) { // Handle error. }
// Get the image from the newly created snapshot.
//UIImage *image = mapSnapshot.image;
// Optionally, draw annotations on the image before displaying it.
}
UIImage *image = mapSnapshot.image;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(50, 80, 200, 200)];
imageView.layer.borderWidth = 5.f;
imageView.layer.borderColor = [UIColor yellowColor].CGColor;
imageView.image = image;
[self.view addSubview:imageView];
}
7、添加一个大头针
- (void)viewDidLoad {
[super viewDidLoad];
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
//添加一个大头针
MKPointAnnotation *annotation0 = [[MKPointAnnotation alloc] init];
[annotation0 setCoordinate:CLLocationCoordinate2DMake(29.454686, 106.529259)];
[annotation0 setTitle:@"重庆理工大学"];
[annotation0 setSubtitle:@"重庆市巴南区红光大道69号"];
[self.mapView addAnnotation:annotation0];
}
8、修改气泡内容
- (void)viewDidLoad {
[super viewDidLoad];
self.mapView.delegate = self;
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
MKPointAnnotation *annotation0 = [[MKPointAnnotation alloc] init];
[annotation0 setCoordinate:CLLocationCoordinate2DMake(29.454686, 106.529259)];
[annotation0 setTitle:@"重庆理工大学"];
[annotation0 setSubtitle:@"重庆市巴南区红光大道69号"];
[self.mapView addAnnotation:annotation0];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation{
// If the annotation is the user location, just return nil.（如果是显示用户位置的Annotation,则使用默认的蓝色圆点）
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
if ([annotation isKindOfClass:[MKPointAnnotation class]]) {
// Try to dequeue an existing pin view first.（这里跟UITableView的重用差不多）
MKPinAnnotationView *customPinView = (MKPinAnnotationView*)[mapView
dequeueReusableAnnotationViewWithIdentifier:@"CustomPinAnnotationView"];
if (!customPinView){
// If an existing pin view was not available, create one.
customPinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:@"CustomPinAnnotationView"];
}
//iOS9中用pinTintColor代替了pinColor
customPinView.pinColor = MKPinAnnotationColorPurple;
customPinView.animatesDrop = YES;
customPinView.canShowCallout = YES;
UIButton *rightButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 80, 50)];
rightButton.backgroundColor = [UIColor grayColor];
[rightButton setTitle:@"查看详情" forState:UIControlStateNormal];
customPinView.rightCalloutAccessoryView = rightButton;
// Add a custom image to the left side of the callout.（设置弹出起泡的左面图片）
UIImageView *myCustomImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"myimage"]];
customPinView.leftCalloutAccessoryView = myCustomImage;
return customPinView;
}
return nil;//返回nil代表使用默认样式
}
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{
NSLog(@"点击了查看详情");
}
9、修改大头针样式
- (void)viewDidLoad {
[super viewDidLoad];
self.mapView.delegate = self;
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
MKPointAnnotation *annotation0 = [[MKPointAnnotation alloc] init];
[annotation0 setCoordinate:CLLocationCoordinate2DMake(29.454686, 106.529259)];
[annotation0 setTitle:@"重庆理工大学"];
[annotation0 setSubtitle:@"重庆市巴南区红光大道69号"];
[self.mapView addAnnotation:annotation0];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation
{
// If the annotation is the user location, just return nil.
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
if ([annotation isKindOfClass:[MKPointAnnotation class]]) {
MKAnnotationView* aView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"MKPointAnnotation"];
aView.image = [UIImage imageNamed:@"myimage"];
aView.canShowCallout = YES;
return aView;
}
return nil;
}
10、自定义大头针跟气泡
- (void)viewDidLoad {
[super viewDidLoad];
self.mapView.delegate = self;
[self.mapView setRegion:MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(29.454686, 106.539259), 5000, 5000) animated:YES];
MyCustomAnnotation *annotation1 = [[MyCustomAnnotation alloc] initWithLocation:CLLocationCoordinate2DMake(29.454686, 106.529259)];
annotation1.maintitle = @"重庆理工大学";
annotation1.secondtitle = @"计算机科学与工程学院";
[self.mapView addAnnotation:annotation1];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id )annotation
{
if ([annotation isKindOfClass:[MyCustomAnnotation class]]){
MyCustomAnnotationView *annotationView = (MyCustomAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"MyCustomAnnotationView"];
if (!annotationView) {
annotationView = [[MyCustomAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"MyCustomAnnotationView"];
annotationView.image = [UIImage imageNamed:@"myimage"];
}
return annotationView;
}
return nil;
}
结束语
到这里就结束了，如若不懂的话可以留言，也可以加入群讨论
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