我知道如何在 Facebook 上点赞照片/评论。但我想通过我的应用点赞 Facebook页面。可能吗？如果是的话，谁能给我一些建议？
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3 回答
3
这是个问题。如果您能够做到这一点，您将能够以编程方式“喜欢”一个页面，而用户不必意识到这是正在发生的事情。这将违反 Facebook 的服务条款。
我认为你最好在你的应用程序中简单地放置一个常规的“喜欢按钮”并让你的用户决定他们是否要点击它。
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于 2013-04-22T09:04:34.780 回答
1
Fb like Widget 可以嵌入到我们的应用程序中。您只需添加一个 webView 并在此处获取 Fb Like Widget html 代码/URL。
在 ViewController.h 中要添加 fb like 按钮：
#import <UIKit/UIKit.h>
@interface TestViewController : UIViewController <UIWebViewDelegate>
@property (strong, nonatomic) UIWebView * fbLikeWebView;
-(void)embedFBLikeButton;
@end
在 TestViewController.m
#import "AboutUsViewController.h"
@implementation AboutUsViewController
@synthesize fbLikeWebView = _fbLikeWebView;
- (void)viewDidLoad
{
[super viewDidLoad];
//Add this code for FbLike Webview
self.fbLikeWebView = [[UIWebView alloc] initWithFrame: CGRectMake(100.0, 50.0, 55.0, 70.0)];
_fbLikeWebView.opaque = NO;
_fbLikeWebView.backgroundColor = [UIColor clearColor];
_fbLikeWebView.delegate = self;
[self.view addSubview:_fbLikeWebView];
for (UIScrollView *subview in _fbLikeWebView.subviews)
{
if ([subview isKindOfClass:[UIScrollView class]]) {
subview.scrollEnabled = NO;
subview.bounces = NO;
}
}
}
然后在 ViewWillAppear 方法中调用 enbeddFBLikeButton 方法在 web 视图上添加 fbLike 按钮 wigdet：
-(void)viewWillAppear:(BOOL)animated
{
[self embedFBLikeButton];
[_fbLikeWebView reload];
}
-(void)embedFBLikeButton
{
NSString *facebookUrl = //here paste the url you get from fb developer link above;
[self.fbLikeWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:facebookUrl]]];
}
您现在符合 UIWebViewDelegate ，现在轮到在这里定义 edelegate 方法：
#pragma mark - WebView Delgate Methods
- (BOOL)webView:(UIWebView *)webview shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
if ([request.URL.lastPathComponent isEqualToString:@"login.php"])
{
[self login];
return NO;
}
return YES;
}
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
[_fbLikeWebView stopLoading];
}
此方法用于将用户登录到 facebook 帐户：
- (void)login
{
[FBSession setActiveSession: [[FBSession alloc] initWithPermissions:@[@"publish_actions", @"publish_stream", @"user_photos"]]];
[[FBSession activeSession] openWithBehavior: FBSessionLoginBehaviorForcingWebView completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
switch (status) {
case FBSessionStateOpen:
// call the legacy session delegate
//Now the session is open do corresponding UI changes
if (session.isOpen) {
FBRequest *me = [FBRequest requestForMe];
[me startWithCompletionHandler: ^(FBRequestConnection *connection,
NSDictionary<FBGraphUser> *my,
NSError *error) {
if (!my) {
NSLog(@"Facebook error:\n%@", error.description);
[[[UIAlertView alloc] initWithTitle: @"Error"
message: @"Facebook Login error."
delegate: self
cancelButtonTitle: @"Ok"
otherButtonTitles: nil, nil] show];
return;
}
}];
[_fbLikeWebView reload];
[[[UIAlertView alloc] initWithTitle: @""
message: @"Successfully Login. Please click on like button"
delegate: self
cancelButtonTitle: @"Ok"
otherButtonTitles: nil, nil] show];
}
break;
case FBSessionStateClosedLoginFailed:
{
[_fbLikeWebView reload];
}
break;
default:
break; // so we do nothing in response to those state transitions
}
}];
}
于 2013-12-06T12:19:00.630 回答
1
我已经编写了一个调用方法，您可以通过在方法中提供其 url 来喜欢您的页面。对于这种方法，您必须使用 facebook sdk 并且需要添加一些已弃用的 facebook 文件。
#import "Facebook.h"
#import "FBCustomLoginDialog.h"
#import "Accounts/Accounts.h"
如何找到这些文件并使用它取决于您。无论如何，这都是类似页面的工作代码。
-(void)like
{
NSString *likePage=@"http://in.yahoo.com/?p=us"; // here you page url
NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
likePage, @"object",[[NSUserDefaults standardUserDefaults] valueForKey:@"token"],@"access_token",
nil];
[FBRequestConnection startWithGraphPath:@"/me/og.likes" parameters:params HTTPMethod:@"POST" completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:nil message:[NSString stringWithFormat:@"liked with id %@",[result valueForKey:@"id"]] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
NSLog(@"result is %@",result);
}];
}
- (IBAction)likepageonFB:(id)sender
{
if ([[FBSession activeSession] isOpen]) {
[self like];
}else
{
[appDelegate openSession];
}
}
这是应用程序委托文件中使用的代码....
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[LikeAppViewController alloc] initWithNibName:@"LikeAppViewController" bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
if (FBSession.activeSession.state == FBSessionStateCreatedTokenLoaded) {
// To-do, show logged in view
// [self openSession];
} else {
// No, display the login page.
[self showLoginView];
}
return YES;
}
#pragma mark- Facebook Methods
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen:
{
[[NSUserDefaults standardUserDefaults] setValue:[[FBSession activeSession] accessToken] forKey:@"token"];
NSLog(@"token is %@",[[FBSession activeSession] accessToken]);
[self.viewController like];
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[self showLoginView];
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:@"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
}
- (void)openSession
{
NSLog(@"open session called ");
NSArray *permissions=[[NSArray alloc] initWithObjects:@"publish_stream",@"publish_actions",@"user_likes",@"user_about_me",nil];
[FBSession openActiveSessionWithPublishPermissions:permissions defaultAudience:FBSessionDefaultAudienceEveryone allowLoginUI:YES completionHandler:^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
}
- (void)showLoginView
{
[self.viewController presentedViewController];
}
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
return [FBSession.activeSession handleOpenURL:url];
}
- (void)fbDialogLogin:(NSString*)token expirationDate:(NSDate*)expirationDate
{
NSLog(@"expiry date is %@",expirationDate);
}
于 2013-05-25T05:00:46.767 回答