SLComposeViewController

Question

-(IBAction)post:(id)sender
{
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
    mySocialComposer = [[SLComposeViewController alloc]init];
    mySocialComposer = [SLComposeViewController    
    composeViewControllerForServiceType:SLServiceTypeFacebook];
    [mySocialComposer setInitialText:@"Hello World"];
    [mySocialComposer addImage:[IIImage imageNamed:@"myImage.png"]];

    [self presentViewController:mySocialComposer animated:YES completion:nil];
 }

 [mySocialComposer setCompletionHandler:^(SLComposeViewControllerResult result){

    NSString *outout = [[NSString alloc] init];

    switch (result) {
        case SLComposeViewControllerResultCancelled:
            outout = @"Post Cancled";
            break;
            case SLComposeViewControllerResultDone:
            outout = @"Post Done";

        default:
            break;
    }
    UIAlertView *myalertView = [[UIAlertView alloc]initWithTitle:@"FaceBook"  
    message:outout delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
    [myalertView show];
    }];


}

我想在facebook上发布一些没有图片的东西，但当我发布图片时，它没有工作，并给出了一个错误警报。但是当我在我的帖子中添加一张图片时，它将会成功发布。我只想在没有图片的情况下发布。有没有办法做到这一点。？

Answer 1

尝试去掉SLComposeViewController的alloc和init行，因为您正在使用类方法composeViewControllerForServiceType重新创建，它返回一个自动释放的对象.....(除非在ARC下)

所以它看起来像这样：

-(IBAction)post:(id)sender
{
if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
mySocialComposer = [SLComposeViewController    
composeViewControllerForServiceType:SLServiceTypeFacebook];
[mySocialComposer setInitialText:@"Hello World"];

[self presentViewController:mySocialComposer animated:YES completion:nil];
 }

 [mySocialComposer setCompletionHandler:^(SLComposeViewControllerResult result){
NSString *outout = [[NSString alloc] init];

switch (result) {
    case SLComposeViewControllerResultCancelled:
        outout = @"Post Cancled";
        break;
        case SLComposeViewControllerResultDone:
        outout = @"Post Done";

    default:
        break;
}
UIAlertView *myalertView = [[UIAlertView alloc]initWithTitle:@"FaceBook"  
message:outout delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
[myalertView show];
}];

否则，代码在我看来没问题，除非您在其他地方对这个mySocialComposer实例执行某些操作