您可以使用 Consumer SDK 建構及執行與隨選乘車和運送服務解決方案後端服務整合的基本消費者應用程式。您可以建立行程和訂單進度應用程式,以顯示目前的行程、回應行程更新及處理行程錯誤。
由於 Consumer SDK 採用模組化架構,因此您可以將要用於特定應用程式的 API 部分,與您自己的 API、Fleet Engine 提供的後端服務,以及 Google 地圖平台的其他 API 整合。
基本系統需求
專案設定
Swift 套件管理員
您可以透過 Swift Package Manager 安裝 Consumer SDK。如要新增 SDK,請確認您已移除所有現有的消費者 SDK 依附元件。
如要將 SDK 加入新專案或現有專案,請按照下列步驟操作:
-
開啟 Xcode
project
或workspace
,然後依序前往「File」>「Add Package Dependencies」。 - 在網址中輸入 https://github.com/googlemaps/ios-consumer-sdk,按下 Enter 鍵即可擷取套件,然後按一下「新增套件」。
-
如要安裝特定
version
,請將「Dependency Rule」欄位設為其中一個版本型選項。如果是新專案,建議您指定最新版本並使用「精確版本」選項。完成後,按一下 [Add Package]。 -
在「Choose Package Products」視窗中,確認
GoogleRidesharingConsumer
會新增至您指定的main
目標。完成後,按一下「Add Package」。 -
如要驗證安裝,請前往目標的
General
窗格。「Frameworks、程式庫和嵌入的內容」應該會顯示已安裝的套件。 您也可以查看「Project Navigator」的「Package Dependencies」部分,確認套件及其版本。
如要更新現有專案的 package
,請按照下列步驟操作:
- 在 Xcode 中,依序前往「File」>「Packages」>「Update to Package Versions」。
- 如要驗證安裝,請前往「Project Navigator」的「Package Dependencies」部分,驗證套件及其版本。
如要移除使用 CocoaPods
新增的現有消費者 SDK 依附元件,請按照下列步驟操作:
- 關閉 Xcode 工作區。開啟終端機並執行下列指令:
sudo gem install cocoapods-deintegrate cocoapods-clean pod deintegrate pod cache clean --all
-
如果不想將
Podfile
、Podfile.resolved
和 Xcodeworkspace
用於 CocoaPods 以外的任何產品,請移除。
如要移除手動安裝的現有消費者 SDK,請按照下列步驟操作:
在 Xcode 專案設定中,尋找「Frameworks、程式庫和內嵌內容」。請使用減號
(-)
移除下列架構:GoogleRidesharingConsumer.xcframework
從 Xcode 專案的頂層目錄中,移除
GoogleRidesharingConsumer
套件。
CocoaPods
如要使用 CocoaPods 設定消費者 SDK,您需要下列項目:
CocoaPods 工具:如要安裝這項工具,請開啟終端機並執行下列指令。
sudo gem install cocoapods
詳情請參閱 CocoaPods 入門指南。
為 Consumer SDK 建立 Podfile,然後用來安裝 API 及其依附元件。首先,在專案目錄中建立名為 Podfile 的檔案這個檔案定義了專案的依附元件。然後編輯 Podfile 並加入依附元件。以下是包含依附元件的範例:
source "https://github.com/CocoaPods/Specs.git" target 'YOUR_APPLICATION_TARGET_NAME_HERE' do pod 'GoogleRidesharingConsumer' end
儲存 Podfile。開啟終端機,並前往包含 Podfile 的目錄:
cd <path-to-project>
執行 pod install 指令。此操作會安裝 Podfile 中指定的 API,以及這些 API 的所有依附元件。
pod install
關閉 Xcode,然後開啟 (按兩下) 專案的 .xcworkspace 檔案以啟動 Xcode。如要稍後再開啟專案,請使用 .xcworkspace 檔案。
安裝 XCFramework
XCFramework 是用於安裝消費者 SDK 的二進位套件。您可以在多個平台使用這個套件,包括使用 M1 晶片組的電腦。本指南說明如何手動將包含 Consumer SDK 的 XCFramework 新增至專案,並在 Xcode 中調整建構設定。
下載 SDK 二進位檔和資源:
將壓縮的檔案解壓縮,以存取 XCFramework 和資源。
啟動 Xcode,然後開啟現有專案或建立新專案。如果您是 iOS 新手,請建立新專案並選取 iOS 應用程式範本。
如果專案群組還沒有架構群組,請建立群組。
如要安裝 Consumer SDK,請將
GoogleRidesharingConsumer.xcframework
檔案拖曳到「Frameworks、Library 和 Embedded Content」下方的專案中。系統提示時,視需要選取「複製項目」。將下載的
GoogleRidesharingConsumer.bundle
拖曳至 Xcode 專案的頂層目錄。當系統提示時,請選取Copy items if needed
。從「Project Navigator」中選取專案,並選擇應用程式的目標。
開啟「Build Phases」分頁,然後在「Link Binary with Libraries」中加入下列架構和程式庫 (如果尚未新增):
Accelerate.framework
CoreData.framework
CoreGraphics.framework
CoreImage.framework
CoreLocation.framework
CoreTelephony.framework
CoreText.framework
GLKit.framework
ImageIO.framework
libc++.tbd
libz.tbd
Metal.framework
OpenGLES.framework
QuartzCore.framework
SystemConfiguration.framework
UIKit.framework
選擇您的專案 (而不是特定目標),然後開啟「Build Settings」分頁。在「Other Linker Flags」部分中,新增偵錯和發布版本的
-ObjC
。如果沒有看到這些設定,請將建構設定列中的篩選器從「Basic」變更為「All」。
應用程式整合
提供驗證權杖
當您的消費者應用程式向 Fleet Engine 要求行程更新時,要求必須包含有效的存取權杖。為了授權及驗證這些要求,Consumer SDK 會呼叫符合 GMTCAuthorization
通訊協定的物件。物件負責提供必要的存取權杖。
應用程式開發人員可以選擇產生權杖的方式。您的實作應能夠執行下列操作:
- 從 HTTPS 伺服器擷取可能是 JSON 格式的存取權杖。
- 剖析並快取權杖。
- 請在權杖過期時重新整理。
如要進一步瞭解 Fleet Engine 伺服器預期的權杖,請參閱建立 JSON Web Token (JWT) 以進行授權。
提供者 ID 與 Google Cloud 專案 ID 相同。詳情請參閱開始使用 Fleet Engine。
以下範例實作存取權杖供應工具:
Swift
/*
* SampleAccessTokenProvider.swift
*/
import GoogleRidesharingConsumer
private let providerURL = "INSERT_YOUR_TOKEN_PROVIDER_URL"
class SampleAccessTokenProvider: NSObject, GMTCAuthorization {
private struct AuthToken {
// The cached trip token.
let token: String
// Keep track of when the token expires for caching.
let expiration: TimeInterval
// Keep track of the trip ID the cached token is for.
let tripID: String
}
enum AccessTokenError: Error {
case missingAuthorizationContext
case missingData
}
private var authToken: AuthToken?
func fetchToken(
with authorizationContext: GMTCAuthorizationContext?,
completion: @escaping GMTCAuthTokenFetchCompletionHandler
) {
// Get the trip ID from the authorizationContext. This is set by the Consumer SDK.
guard let authorizationContext = authorizationContext else {
completion(nil, AccessTokenError.missingAuthorizationContext)
return
}
let tripID = authorizationContext.tripID
// If appropriate, use the cached token.
if let authToken = authToken,
authToken.expiration > Date.now.timeIntervalSince1970 && authToken.tripID == tripID
{
completion(authToken.token, nil)
return
}
// Otherwise, try to fetch a new token from your server.
let request = URLRequest(url: URL(string: providerURL))
let task = URLSession.shared.dataTask(with: request) { [weak self] data, _, error in
guard let strongSelf = self else { return }
guard error == nil else {
completion(nil, error)
return
}
// Replace the following key values with the appropriate keys based on your
// server's expected response.
let tripTokenKey = "TRIP_TOKEN_KEY"
let tokenExpirationKey = "TOKEN_EXPIRATION"
guard let data = data,
let fetchData = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
let token = fetchData[tripTokenKey] as? String,
let expiration = fetchData[tokenExpirationKey] as? Double
else {
completion(nil, AccessTokenError.missingData)
return
}
strongSelf.authToken = AuthToken(token: token, expiration: expiration, tripID: tripID)
completion(token, nil)
}
task.resume()
}
}
Objective-C
/*
* SampleAccessTokenProvider.h
*/
#import <Foundation/Foundation.h>
#import <GoogleRidesharingConsumer/GoogleRidesharingConsumer.h>
NS_ASSUME_NONNULL_BEGIN
@interface SampleAccessTokenProvider : NSObject <GMTCAuthorization>
@end
NS_ASSUME_NONNULL_END
/*
* SampleAccessTokenProvider.m
*/
#import "SampleAccessTokenProvider.h"
#import "GoogleRidesharingConsumer/GoogleRidesharingConsumer.h"
static NSString *const PROVIDER_URL = @"INSERT_YOUR_TOKEN_PROVIDER_URL";
// SampleAccessTokenProvider.m
@implementation SampleAccessTokenProvider {
// The cached token with claims to the current trip.
NSString *_cachedTripToken;
// Keep track of the Trip ID the cached token is for.
NSString *_lastKnownTripID;
// Keep track of when tokens expire for caching.
NSTimeInterval _tokenExpiration;
}
- (void)fetchTokenWithContext:(nullable GMTCAuthorizationContext *)authorizationContext
completion:(nonnull GMTCAuthTokenFetchCompletionHandler)completion {
// Get the trip ID from the authorizationContext. This is set by the Consumer SDK.
NSString *tripID = authorizationContext.tripID;
// Clear cached trip token if trip ID has changed.
if (![_lastKnownTripID isEqual:tripID]) {
_tokenExpiration = 0.0;
_cachedTripToken = nil;
}
_lastKnownTripID = tripID;
// Clear cached tripToken if it has expired.
if ([[NSDate date] timeIntervalSince1970] > _tokenExpiration) {
_cachedTripToken = nil;
}
// If appropriate, use the cached token.
if (_cachedTripToken) {
completion(_cachedTripToken, nil);
return;
}
// Otherwise, try to fetch a new token from your server.
NSURL *requestURL = [NSURL URLWithString:PROVIDER_URL];
NSMutableURLRequest *request =
[[NSMutableURLRequest alloc] initWithURL:requestURL];
request.HTTPMethod = @"GET";
// Replace the following key values with the appropriate keys based on your
// server's expected response.
NSString *tripTokenKey = @"TRIP_TOKEN_KEY";
NSString *tokenExpirationKey = @"TOKEN_EXPIRATION";
__weak typeof(self) weakSelf = self;
void (^handler)(NSData *_Nullable data, NSURLResponse *_Nullable response,
NSError *_Nullable error) =
^(NSData *_Nullable data, NSURLResponse *_Nullable response, NSError *_Nullable error) {
typeof(self) strongSelf = weakSelf;
if (error) {
completion(nil, error);
return;
}
NSError *JSONError;
NSMutableDictionary *JSONResponse =
[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&JSONError];
if (JSONError) {
completion(nil, JSONError);
return;
} else {
// Sample code only. No validation logic.
id expirationData = JSONResponse[tokenExpirationKey];
if ([expirationData isKindOfClass:[NSNumber class]]) {
NSTimeInterval expirationTime = ((NSNumber *)expirationData).doubleValue;
strongSelf->_tokenExpiration = [[NSDate date] timeIntervalSince1970] + expirationTime;
}
strongSelf->_cachedTripToken = JSONResponse[tripTokenKey];
completion(JSONResponse[tripTokenKey], nil);
}
};
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *mainQueueURLSession =
[NSURLSession sessionWithConfiguration:config delegate:nil
delegateQueue:[NSOperationQueue mainQueue]];
NSURLSessionDataTask *task = [mainQueueURLSession dataTaskWithRequest:request completionHandler:handler];
[task resume];
}
@end
應用程式初始化
Swift
/*
* AppDelegate.swift
*/
import GoogleRidesharingConsumer
import GoogleMaps
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Register your API key for GMSServices.
GMSServices.provideAPIKey(yourMapsAPIKey)
// Set the instance of the SampleAccessTokenProvider.
GMTCServices.setAccessTokenProvider(SampleAccessTokenProvider(), providerID: yourProviderID)
// Other initialization code ...
return true
}
}
Objective-C
/*
* AppDelegate.m
*/
#import <GoogleMaps/GoogleMaps.h>
#import <GoogleRidesharingConsumer/GoogleRidesharingConsumer.h>
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//Register your API key for GMSServices.
[GMSServices provideAPIKey:yourMapsAPIKey];
//Set the instance of the AccessTokenFactory.
[GMTCServices setAccessTokenProvider:[[SampleAccessTokenProvider alloc] init]
providerID:yourProviderID];
// Other initialization code ...
return YES;
}
@end
地圖檢視整合
初始化地圖檢視
以下範例說明如何初始化 GMTCMapView
。
Swift
/*
* MapViewController.swift
*/
class ViewController: UIViewController, GMTCMapViewDelegate {
private var rideSharingMap: GMTCMapView?
override func viewDidLoad() {
super.viewDidLoad()
self.rideSharingMap = GMTCMapView(frame: UIScreen.main.bounds)
self.rideSharingMap.delegate = self
self.rideSharingMap?.settings.myLocationButton = true
self.view.addSubview(self.rideSharingMap!)
...
}
Objective-C
/*
* MapViewController.h
*/
@interface MapViewController : UIViewController<GMTCMapViewDelegate>
...
@end
/*
* MapViewController.m
*/
@implementation MapViewController
- (void)viewDidLoad {
[super viewDidLoad];
...
self.mapView = [[GMTCMapView alloc] initWithFrame:CGRectZero];
self.mapView.settings.myLocationButton = YES;
self.mapView.delegate = self;
...
}
...
@end
處理地圖檢視事件
以下範例說明如何實作委派項目來處理客戶狀態事件。
Swift
func mapViewDidInitialize(_ mapview: GMTCMapView) {
// Handle the update to the state of the map view to browsing.
}
func mapView(_ mapView: GMSMapView, didTapConsumerMarker mapMarker: GMSMarker, markerType: GMTCMapViewMarkerType) -> Bool {
// Handle the mapView marker was tapped.
}
Objective-C
/*
* MapViewController.m
*/
#pragma mark - GMTCMapViewDelegate implementation
// Handle state update of map view.
- (void)mapViewDidInitializeCustomerState:(GMTCMapView *)mapview {
// Handle the update to the state of the map view to browsing.
}
- (void)mapView:(GMSMapView *)mapView
didTapConsumerMarker:(nonnull GMSMarker *)mapMarker
markerType:(GMTCMapViewMarkerType)markerType {
// Handle the mapView marker was tapped.
}
旅程分享
畫面載入後開始新的行程
以下範例說明如何在檢視畫面載入後,立即開始共用歷程。您可以從 ViewController
收集所有使用者輸入內容 (例如下車和上車地點),然後建立新的 ViewController
以直接啟動分享歷程。
Swift
/*
* MapViewController.swift
*/
override func viewDidLoad() {
super.viewDidLoad()
...
self.mapView = GMTCMapView(frame: UIScreen.main.bounds)
self.mapView.delegate = self
self.view.addSubview(self.mapView)
}
func mapViewDidInitializeCustomerState(_: GMTCMapView) {
self.mapView.pickupLocation = self.selectedPickupLocation
self.mapView.dropoffLocation = self.selectedDropoffLocation
self.startConsumerMatchWithLocations(
pickupLocation: self.mapView.pickupLocation!,
dropoffLocation: self.mapView.dropoffLocation!
) { [weak self] (tripName, error) in
guard let strongSelf = self else { return }
if error != nil {
// print error message.
return
}
let tripService = GMTCServices.shared().tripService
// Create a tripModel instance for listening the update of the trip
// specified by this trip name.
let tripModel = tripService.tripModel(forTripName: tripName)
// Create a journeySharingSession instance based on the tripModel
let journeySharingSession = GMTCJourneySharingSession(tripModel: tripModel)
// Add the journeySharingSession instance on the mapView for UI updating.
strongSelf.mapView.show(journeySharingSession)
// Register for the trip update events.
tripModel.register(strongSelf)
strongSelf.currentTripModel = tripModel
strongSelf.currentJourneySharingSession = journeySharingSession
strongSelf.hideLoadingView()
}
self.showLoadingView()
}
Objective-C
/*
* MapViewController.m
*/
- (void)viewDidLoad {
[super viewDidLoad];
...
self.mapView = [[GMTCMapView alloc] initWithFrame:CGRectZero];
self.mapView.delegate = self;
[self.view addSubview:self.mapView];
}
// Handle the callback when the GMTCMapView did initialized.
- (void)mapViewDidInitializeCustomerState:(GMTCMapView *)mapview {
self.mapView.pickupLocation = self.selectedPickupLocation;
self.mapView.dropoffLocation = self.selectedDropoffLocation;
__weak __typeof(self) weakSelf = self;
[self startTripBookingWithPickupLocation:self.selectedPickupLocation
dropoffLocation:self.selectedDropoffLocation
completion:^(NSString *tripName, NSError *error) {
__typeof(self) strongSelf = weakSelf;
GMTCTripService *tripService = [GMTCServices sharedServices].tripService;
// Create a tripModel instance for listening to updates to the trip specified by this trip name.
GMTCTripModel *tripModel = [tripService tripModelForTripName:tripName];
// Create a journeySharingSession instance based on the tripModel.
GMTCJourneySharingSession *journeySharingSession =
[[GMTCJourneySharingSession alloc] initWithTripModel:tripModel];
// Add the journeySharingSession instance on the mapView for updating the UI.
[strongSelf.mapView showMapViewSession:journeySharingSession];
// Register for trip update events.
[tripModel registerSubscriber:self];
strongSelf.currentTripModel = tripModel;
strongSelf.currentJourneySharingSession = journeySharingSession;
[strongSelf hideLoadingView];
}];
[self showLoadingView];
}
取消進行中的行程
以下範例說明如何重設目前的行程。
Swift
/*
* MapViewController.swift
*/
func cancelCurrentActiveTrip() {
// Stop the tripModel
self.currentTripModel.unregisterSubscriber(self)
// Remove the journey sharing session from the mapView's UI stack.
self.mapView.hide(journeySharingSession)
}
Objective-C
/*
* MapViewController.m
*/
- (void)cancelCurrentActiveTrip {
// Stop the tripModel
[self.currentTripModel unregisterSubscriber:self];
// Remove the journey sharing session from the mapView's UI stack.
[self.mapView hideMapViewSession:journeySharingSession];
}
監聽行程更新
以下範例說明如何註冊 tripModel
回呼。
Swift
/*
* MapViewController.swift
*/
override func viewDidLoad() {
super.viewDidLoad()
// Register for trip update events.
self.currentTripModel.register(self)
}
Objective-C
/*
* MapViewController.m
*/
- (void)viewDidLoad {
[super viewDidLoad];
// Register for trip update events.
[self.currentTripModel registerSubscriber:self];
...
}
以下範例說明如何取消註冊 tripModel
回呼。
Swift
/*
* MapViewController.swift
*/
deinit {
self.currentTripModel.unregisterSubscriber(self)
}
Objective-C
/*
* MapViewController.m
*/
- (void)dealloc {
[self.currentTripModel unregisterSubscriber:self];
...
}
以下範例說明如何實作 GMTCTripModelSubscriber
通訊協定,以便在行程狀態更新時處理回呼。
Swift
/*
* MapViewController.swift
*/
func tripModel(_: GMTCTripModel, didUpdate trip: GMTSTrip?, updatedPropertyFields: GMTSTripPropertyFields) {
// Update the UI with the new `trip` data.
self.updateUI(with: trip)
}
func tripModel(_: GMTCTripModel, didUpdate tripStatus: GMTSTripStatus) {
// Handle trip status did change.
}
func tripModel(_: GMTCTripModel, didUpdateActiveRouteRemainingDistance activeRouteRemainingDistance: Int32) {
// Handle remaining distance of active route did update.
}
func tripModel(_: GMTCTripModel, didUpdateActiveRoute activeRoute: [GMTSLatLng]?) {
// Handle trip active route did update.
}
func tripModel(_: GMTCTripModel, didUpdate vehicleLocation: GMTSVehicleLocation?) {
// Handle vehicle location did update.
}
func tripModel(_: GMTCTripModel, didUpdatePickupLocation pickupLocation: GMTSTerminalLocation?) {
// Handle pickup location did update.
}
func tripModel(_: GMTCTripModel, didUpdateDropoffLocation dropoffLocation: GMTSTerminalLocation?) {
// Handle drop off location did update.
}
func tripModel(_: GMTCTripModel, didUpdatePickupETA pickupETA: TimeInterval) {
// Handle the pickup ETA did update.
}
func tripModel(_: GMTCTripModel, didUpdateDropoffETA dropoffETA: TimeInterval) {
// Handle the drop off ETA did update.
}
func tripModel(_: GMTCTripModel, didUpdateRemaining remainingWaypoints: [GMTSTripWaypoint]?) {
// Handle updates to the pickup, dropoff or intermediate destinations of the trip.
}
func tripModel(_: GMTCTripModel, didFailUpdateTripWithError error: Error?) {
// Handle the error.
}
func tripModel(_: GMTCTripModel, didUpdateIntermediateDestinations intermediateDestinations: [GMTSTerminalLocation]?) {
// Handle the intermediate destinations being updated.
}
func tripModel(_: GMTCTripModel, didUpdateActiveRouteTraffic activeRouteTraffic: GMTSTrafficData?) {
// Handle trip active route traffic being updated.
}
Objective-C
/*
* MapViewController.m
*/
#pragma mark - GMTCTripModelSubscriber implementation
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateTrip:(nullable GMTSTrip *)trip
updatedPropertyFields:(enum GMTSTripPropertyFields)updatedPropertyFields {
// Update the UI with the new `trip` data.
[self updateUIWithTrip:trip];
...
}
- (void)tripModel:(GMTCTripModel *)tripModel didUpdateTripStatus:(enum GMTSTripStatus)tripStatus {
// Handle trip status did change.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateActiveRouteRemainingDistance:(int32_t)activeRouteRemainingDistance {
// Handle remaining distance of active route did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateActiveRoute:(nullable NSArray<GMTSLatLng *> *)activeRoute {
// Handle trip active route did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateVehicleLocation:(nullable GMTSVehicleLocation *)vehicleLocation {
// Handle vehicle location did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdatePickupLocation:(nullable GMTSTerminalLocation *)pickupLocation {
// Handle pickup location did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateDropoffLocation:(nullable GMTSTerminalLocation *)dropoffLocation {
// Handle drop off location did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel didUpdatePickupETA:(NSTimeInterval)pickupETA {
// Handle the pickup ETA did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateRemainingWaypoints:(nullable NSArray<GMTSTripWaypoint *> *)remainingWaypoints {
// Handle updates to the pickup, dropoff or intermediate destinations of the trip.
}
- (void)tripModel:(GMTCTripModel *)tripModel didUpdateDropoffETA:(NSTimeInterval)dropoffETA {
// Handle the drop off ETA did update.
}
- (void)tripModel:(GMTCTripModel *)tripModel didFailUpdateTripWithError:(nullable NSError *)error {
// Handle the error.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateIntermediateDestinations:
(nullable NSArray<GMTSTerminalLocation *> *)intermediateDestinations {
// Handle the intermediate destinations being updated.
}
- (void)tripModel:(GMTCTripModel *)tripModel
didUpdateActiveRouteTraffic:(nullable GMTSTrafficData *)activeRouteTraffic {
// Handle trip active route traffic being updated.
}
處理錯誤
如果您訂閱了 TripModel 並發生錯誤,可以實作委派方法 tripModel(_:didFailUpdateTripWithError:)
來取得 TripModel 的回呼。Fleet Engine 會產生符合 Google Cloud 錯誤標準的錯誤訊息。如要查看詳細的錯誤訊息定義和所有錯誤代碼,請參閱 Google Cloud 錯誤說明文件。
具體來說,為了監控行程,您必須提供有效的驗證權杖。如果沒有有效的驗證憑證 (例如憑證已過期),系統會產生 401 UNAUTHENTICATED
。如果呼叫者沒有權限呼叫特定 API (例如具有消費者角色的使用者嘗試呼叫 updateTrip),或是要求在 JWT 權杖中沒有有效的 car_id/trip_id,系統就會產生 403 PERMISSION_DENIED
。
詳情請參閱「消費者 SDK 錯誤處理」。
使用者介面自訂
取得/設定自訂折線 UI 選項
以下範例說明如何為折線設定自訂 UI 選項。
Swift
/** MapViewController.swift */
func updatePolylineUIOptions() {
// The polyline type that you would like to set custom UI options for.
let customizablePolylineType = GMTCPolylineType.activeRoute
let polylineStyleOptions = GMTCMutablePolylineStyleOptions()
polylineStyleOptions.strokeWidth = 8.0
polylineStyleOptions.strokeColor = .blue
polylineStyleOptions.isVisible = true
polylineStyleOptions.zIndex = 1000
polylineStyleOptions.isGeodesic = true
let coordinator = self.mapView.consumerMapStyleCoordinator
coordinator.setPolylineStyleOptions(polylineStyleOptions, polylineType:customizablePolylineType)
}
Objective-C
/** MapViewController.m */
- (void)updatePolylineUIOptions {
// The polyline type that you would like to set custom UI options for.
GMTCPolylineType customizablePolylineType = GMTCPolylineTypeActiveRoute;
GMTCMutablePolylineStyleOptions *polylineStyleOptions =
[[GMTCMutablePolylineStyleOptions alloc] init];
polylineStyleOptions.strokeWidth = 8.0;
polylineStyleOptions.strokeColor = [UIColor blueColor];
polylineStyleOptions.isVisible = YES;
polylineStyleOptions.zIndex = 1000;
polylineStyleOptions.isGeodesic = YES;
[[_mapView consumerMapStyleCoordinator] setPolylineStyleOptions:polylineStyleOptions
polylineType:customizablePolylineType];
}
取得/設定自訂標記 UI 選項
以下範例說明如何為標記設定自訂 UI 選項。
Swift
/** MapViewController.swift */
func updateMarkerUIOptions() {
let customizableMarkerType = GMTCCustomizableMarkerType.tripVehicle
let markerStyleOptions = GMTCMutableMarkerStyleOptions()
markerStyleOptions.groundAnchor = groundAnchor
markerStyleOptions.isVisible = true
markerStyleOptions.icon = icon
markerStyleOptions.zIndex = 100
markerStyleOptions.isFlat = false
let coordinator = self.mapView.consumerMapStyleCoordinator
coordinator.setMarkerStyleOptions(markerStyleOptions, markerType: customizableMarkerType)
}
Objective-C
/** MapViewController.m */
- (void)updateMarkerUIOptions {
// The marker type that you would like to set custom UI options for.
GMTCCustomizableMarkerType customizableMarkerType = GMTCCustomizableMarkerTypeTripVehicle;
GMTCMutableMarkerStyleOptions *markerStyleOptions =
[[GMTCMutableMarkerStyleOptions alloc] init];
markerStyleOptions.groundAnchor = groundAnchor;
markerStyleOptions.isVisible = YES;
markerStyleOptions.icon = icon;
markerStyleOptions.zIndex = 100;
markerStyleOptions.isFlat = NO;
[[_mapView consumerMapStyleCoordinator] setMarkerStyleOptions:markerStyleOptions markerType:customizableMarkerType];
}
調整相機縮放比例
Maps SDK for iOS 中的「我的位置」按鈕,會將相機置於裝置位置中央。
如果有執行中的旅程分享工作階段,您可以將相機置於畫面中央,聚焦在旅程上,而不只是裝置的位置。
Consumer SDK 提供預設啟用的自動相機功能。攝影機會縮放畫面,聚焦在旅程分享路線和下一個行程路線點。
如果您需要進一步控管相機行為,可以使用 isAllowCameraAutoUpdate
屬性停用或啟用自動相機功能。
如要進一步瞭解其他相機自訂方式,請參閱 Maps SDK for iOS 移動相機相關說明。