facebook 接入1.在 facebook 后臺 配置 ios 平臺, 獲取 fb appid

store id 可以先隨便找一個已存在的填入進去.

2.CocoaPods 引入幾個核心庫

pod ’FBSDKCoreKit’, ’~> 9.0.1’pod ’FBSDKLoginKit’, ’~> 9.0.1’pod ’FBSDKShareKit’, ’~> 9.0.1’

pod 工程構建出 靜態庫丟到 /Users/XXX/Library/Developer/Xcode/DerivedData/Build/Products 對應 真機/模擬器 的目錄下, 然項目工程編譯時可以鏈接到靜態庫

3.在 info.plist 文件的 <dict>...</dict> 內加入配置

<key>CFBundleURLTypes</key><array> <dict> <key>CFBundleURLSchemes</key> <array> <string>fb[APP_ID]</string> </array> </dict></array> <key>FacebookAppID</key><string>[APP_ID]</string><key>FacebookDisplayName</key><string>[APP_NAME]</string><key>LSApplicationQueriesSchemes</key><array> <string>fbapi</string> <string>fbapi20130214</string> <string>fbapi20130410</string> <string>fbapi20130702</string> <string>fbapi20131010</string> <string>fbapi20131219</string> <string>fbapi20140410</string> <string>fbapi20140116</string> <string>fbapi20150313</string> <string>fbapi20150629</string> <string>fbapi20160328</string> <string>fbauth</string> <string>fb-messenger-share-api</string> <string>fbauth2</string> <string>fbshareextension</string></array>

[APP_ID] 替換 fb appid.

[APP_NAME] 替換為 app 名.

4.代碼

在 app 啟動完后初始化 sdk

// AppDelegate.m @implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {[[FBSDKApplicationDelegate sharedInstance] application:application didFinishLaunchingWithOptions:launchOptions]; return YES;}- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(nonnull NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options{ [[FBSDKApplicationDelegate sharedInstance] application:application openURL:url options:options]; return YES;}

iOS 13 將打開網址的功能移到了 SceneDelegate 中

// SceneDelegate.m#import <FBSDKCoreKit/FBSDKCoreKit.h>@import FacebookCore;@implementation SceneDelegate- (void)scene:(UIScene *)scene openURLContexts:(NSSet<UIOpenURLContext *> *)URLContexts{ UIOpenURLContext *context = URLContexts.allObjects.firstObject; [FBSDKApplicationDelegate.sharedInstance application:UIApplication.sharedApplication openURL:context.URL sourceApplication:context.options.sourceApplication annotation:context.options.annotation];}

登錄, 登出, 獲取用戶信息, 展示 登錄頁面

#import 'FBHelper.h'#import <FBSDKCoreKit/FBSDKCoreKit.h>#import <FBSDKLoginKit/FBSDKLoginKit.h>@implementation FBHelperstatic FBHelper *_sharedIns = nil;+(instancetype) shareInstance { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{_sharedIns = [[self alloc] init] ; }) ;return _sharedIns ;}-(void)showLoginBtn:(UIView*)view{ FBSDKLoginButton *loginButton = [[FBSDKLoginButton alloc] init]; loginButton.center = view.center; [view addSubview:loginButton];}-(void)login:(UIViewController*)vc{ FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init]; [login logInWithPermissions:@[@'publish_actions'] fromViewController:vchandler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {if (error) { NSLog(@'--- login fail, err: %@', error); return;}FBSDKAccessToken* accessToken = [FBSDKAccessToken currentAccessToken];if (accessToken) { NSLog(@'--- login success, userId: %@, token: %@', accessToken.userID, accessToken.tokenString); return;}NSLog(@'--- login cancel'); }];}-(void)logout{ if ([FBSDKAccessToken currentAccessToken]) {NSLog(@'--- has accessToken');FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];[login logOut]; } else {NSLog(@'--- no accessToken'); }}-(void)getUserData{ if ([FBSDKAccessToken currentAccessToken]) {if ([FBSDKAccessToken currentAccessToken]) { [[[FBSDKGraphRequest alloc] initWithGraphPath:@'me?fields=id,name,token_for_business' parameters:nil] startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) {if (!error) { NSLog(@'--- fetched success, result: %@', result);} else { NSLog(@'--- fetched error: %@', error);} }];} } else {NSLog(@'--- no accessToken'); }}@end踩坑

編譯報錯: 找不到 swift 相關文件

報錯: Undefined symbol: __swift_FORCE_LOAD_$_

原因是因為 sdk 使用了 swift, 而工程配置里沒有配置 swift 頭文件搜索的路徑.

解決辦法很簡單: 創建一個 swift 文件即可, xcode 會提示創建橋接文件 Create Bridging Header

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