iOS Facebook分享

一、創建Facebook的應用
https://developers.facebook.com
1、點擊我的應用

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2、點擊創建應用
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3、選擇應用類型
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4、填寫應用名稱,聯系郵箱
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5、填寫基本信息,隱私權政策網址,數據刪除回調地址等
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6、添加平臺,是iOS的要選擇iOS,安卓的選擇安卓平臺
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7、添加成功后,iOS的需要把Bundle id填寫進去,必需要和項目里的填寫一致,然后保存,并且應用模式的開關需要打開
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二、項目配置
1、項目中通過pod集成SDK,手動集成也可以

pod 'FBSDKCoreKit'
pod 'FBSDKShareKit'

2、在info.plist文件中添加以下代碼:

<key>FacebookAppID</key>
    <string>應用編號</string>
    <key>FacebookClientToken</key>
    <string>應用密鑰</string>
    <key>FacebookDisplayName</key>
    <string>app名稱</string>
    <key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
            <key>CFBundleURLName</key>
            <string>com.clatia.plamclati</string>
            <key>CFBundleURLSchemes</key>
            <array>
                <string>fb應用編號</string>
            </array>
        </dict>
    </array>
    <key>LSApplicationQueriesSchemes</key>
    <array>
        <string>fbapi</string>
        <string>fb-messenger-api</string>
        <string>fb-messenger-share-api</string>
        <string>fbauth2</string>
        <string>fbshareextension</string>
    </array>

3、在Appdelegate中,導入#import <FBSDKCoreKit/FBSDKCoreKit.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [[FBSDKApplicationDelegate sharedInstance] application:application didFinishLaunchingWithOptions:launchOptions];
    return YES;
}

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id> *)options{
    BOOL result = [[FBSDKApplicationDelegate sharedInstance] application:app openURL:url sourceApplication:options[UIApplicationOpenURLOptionsSourceApplicationKey] annotation:options[UIApplicationOpenURLOptionsAnnotationKey]];
    return result;
}

4、在進行分享的地方處理邏輯

FBSDKShareLinkContent*linkContent = [[FBSDKShareLinkContent alloc]init];
linkContent.contentURL= [NSURL URLWithString:@"分享鏈接"];
linkContent.quote = @"描述信息";
    
FBSDKShareDialog *shareDialog = [[FBSDKShareDialog alloc]init];
// 需要指定模式,否則會調起web分享
shareDialog.mode = FBSDKShareDialogModeNative;
if (![shareDialog canShow]) {
    shareDialog.mode = FBSDKShareDialogModeWeb;
}
shareDialog.shareContent = linkContent;
shareDialog.delegate = self;
shareDialog.fromViewController = self;
[shareDialog show];

5、實現代理方法
分享后代理方法總是回調到sharerDidCancel,有知道原因和解決方法的小伙伴麻煩告知下

#pragma mark - FBSDKSharingDelegate
- (void)sharer:(id<FBSDKSharing>)sharer didCompleteWithResults:(NSDictionary<NSString *,id> *)results {
    NSString *postId = results[@"postId"];
    FBSDKShareDialog *dialog = (FBSDKShareDialog *)sharer;
    if (dialog.mode == FBSDKShareDialogModeBrowser && (postId == nil || [postId isEqualToString:@""])) {
        // 如果使用webview分享的,但postId是空的,
        // 這種情況是用戶點擊了『完成』按鈕,并沒有真的分享
        NSLog(@"Cancel");
    } else {
        NSLog(@"Success");
    }
}

- (void)sharer:(id<FBSDKSharing>)sharer didFailWithError:(NSError *)error {
    FBSDKShareDialog *dialog = (FBSDKShareDialog *)sharer;
    if (error == nil && dialog.mode == FBSDKShareDialogModeNative) {
        // 如果使用原生登錄失敗,但error為空,那是因為用戶沒有安裝Facebook app
        // 重設dialog的mode,再次彈出對話框
        dialog.mode = FBSDKShareDialogModeBrowser;
        [dialog show];
    } else {
        NSLog(@"Failure");
    }
}

- (void)sharerDidCancel:(id<FBSDKSharing>)sharer {
    NSLog(@"Cancel");
}
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