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Question

添加到Facebook的圖片我越來越想上傳的SLComposeViewController選定的照片時，此錯誤：

[CFNumber挽留]：發送到釋放實例消息0xa1c2c00

該項目建立無錯誤或警告。 這裏是代碼：

- (IBAction)test:(id)sender { 
    if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) { 

     API* api = [API sharedInstance]; 
     NSURL* imageURL = [api urlForImageWithId:IdPhoto isThumb:NO];   
     NSData *data = [NSData dataWithContentsOfURL:imageURL]; 
     UIImage *img = [[UIImage alloc] initWithData:data]; 

     SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook]; 

     [controller setInitialText:@"First post from my iPhone app"]; 
     [controller addURL:[NSURL URLWithString:@"http://www.appcoda.com"]]; 
     [controller addImage:img]; 
     [self presentViewController:controller animated:YES completion:Nil]; 
    } 
} 

任何想法爲什麼？感謝

編輯： 這裏是viewDidLoad中：

-(void)viewDidLoad { 

    API* api = [API sharedInstance]; 
    //load the caption of the selected photo 
    [api commandWithParams:[NSMutableDictionary dictionaryWithObjectsAndKeys:@"stream", @"command", IdPhoto,@"IdPhoto",label.text,@"weddingID", nil] onCompletion:^(NSDictionary *json) { 
     //show the text in the label 
     NSArray* list = [json objectForKey:@"result"]; 
     NSDictionary* photo = [list objectAtIndex:0]; 
     lblTitle.text = [photo objectForKey:@"title"]; 
    }]; 
    //load the big size photo 
    NSURL* imageURL = [api urlForImageWithId:IdPhoto isThumb:NO]; 
    [photoView setImageWithURL: imageURL]; 
      NSLog(@"image url :%@",imageURL); 

} 

Answer 1

首先檢查你的imageURL越來越正確與否， 有一個在SLComposeViewController與ARC沒有問題。

，或者你可以嘗試，如果你的PhotoView中是否使用ARC的ImageView

- (IBAction)test:(id)sender { 
    if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) { 

     SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook]; 

     [controller setInitialText:@"First post from my iPhone app"]; 
     [controller addURL:[NSURL URLWithString:@"http://www.appcoda.com"]]; 
     [controller addImage: photoView.image]; 
     [self presentViewController:controller animated:YES completion:Nil]; 
    } 
}