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[MacOS develop] MapKitDemo DL : 0: ent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.-#import "mapView.h" #import "mapAnnotation.h" @implementation mapView //@synthesize _map, _locationManager -(void)viewDidLoad { [super viewDidLoad] //－－－－－－－－－－ 1: 定义经度和纬度 CLLocationCoordinate2D center = CLLocationCoordinate2DMake(39.54, 116.25) //－－－－－－－－－－ 2: 定义比例缩小或放大，值越小，地图越清晰 MKCoordinateSpan span = MKCoordinateSpanMake(0.5, 0.5) //－－－－－－－－－－ 3:定位一块区域 MKCoordinateRegion region = MKCoordinateRegionMake(center, span) //－－－－－－－－－－ 4:建立地图 _map = [[MKMapView alloc]initWithFrame:CGRectMake(0, 0, 320, 460)] _map.region = region _map.mapType = MKMapTypeStandard //*** 地图类型，共三种 _map.showsUserLocation = YES // 是否显示用户信息 _map.delegate = self //*** 代理 [self.view addSubview:_map] // 将地图添加到view上 //[_map release]
Date : 2025-12-16 Size : 28kb User : pan biny