基本地図を表示する

import GoogleMaps import UIKit  class BasicMapViewController: UIViewController {   var statusLabel: UILabel!    override func viewDidLoad() {     super.viewDidLoad()      // Seattle coordinates     let camera = GMSCameraPosition(latitude: 47.6089945, longitude: -122.3410462, zoom: 14)     let mapView = GMSMapView(frame: view.bounds, camera: camera)     mapView.delegate = self     view = mapView     navigationController?.navigationBar.isTranslucent = false      statusLabel = UILabel(frame: .zero)     statusLabel.alpha = 0.0     statusLabel.backgroundColor = .blue     statusLabel.textColor = .white     statusLabel.textAlignment = .center     view.addSubview(statusLabel)     statusLabel.translatesAutoresizingMaskIntoConstraints = false     NSLayoutConstraint.activate([       statusLabel.topAnchor.constraint(equalTo: view.topAnchor),       statusLabel.heightAnchor.constraint(equalToConstant: 30),       statusLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),       statusLabel.trailingAnchor.constraint(equalTo: view.trailingAnchor),     ])   } }  extension BasicMapViewController: GMSMapViewDelegate {   func mapViewDidStartTileRendering(_ mapView: GMSMapView) {     statusLabel.alpha = 0.8     statusLabel.text = "Rendering"   }    func mapViewDidFinishTileRendering(_ mapView: GMSMapView) {     statusLabel.alpha = 0.0   } }
BasicMapViewController.swift
       

#import "GoogleMapsDemos/Samples/BasicMapViewController.h"  #import <GoogleMaps/GoogleMaps.h>  @implementation BasicMapViewController {   UILabel *_statusLabel; }  - (void)viewDidLoad {   [super viewDidLoad];   // Seattle coordinates   GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:47.6089945                                                           longitude:-122.3410462                                                                zoom:14];   GMSMapView *view = [GMSMapView mapWithFrame:CGRectZero camera:camera];   view.delegate = self;   self.view = view;    // Add status label, initially hidden.   _statusLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 0, 30)];   _statusLabel.alpha = 0.0f;   _statusLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;   _statusLabel.backgroundColor = [UIColor blueColor];   _statusLabel.textColor = [UIColor whiteColor];   _statusLabel.textAlignment = NSTextAlignmentCenter;    [view addSubview:_statusLabel]; }  - (void)mapViewDidStartTileRendering:(GMSMapView *)mapView {   _statusLabel.alpha = 0.8f;   _statusLabel.text = @"Rendering"; }  - (void)mapViewDidFinishTileRendering:(GMSMapView *)mapView {   _statusLabel.alpha = 0.0f; }  @end
BasicMapViewController.m