Twitter SLComposeViewController 经常无法触发

Question

我在 Twitter SLComposeViewController 上遇到了一个奇怪的问题。我现在在 imagePickerController 方法中有一个错误，上面写着“将 void 发送到不兼容类型 void (^)(void) 的参数”

我还收到一条警告，其中包含 twitter 图像“从 imagepicker 中选择的图像”我如何从图像选择器中实际获取图像？谢谢！！

这是拍照动作：

-(void) photoAction {
        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc]
                                                          init];
    #if TARGET_IPHONE_SIMULATOR
        imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    #else
        imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
    #endif
        imagePickerController.editing = YES;
        imagePickerController.delegate = (id)self;
        [self presentViewController:imagePickerController animated:YES completion:nil];
    }

这是下一个方法：

-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    [[picker presentingViewController] dismissViewControllerAnimated:YES completion:[self showTweetSheet]];
     }

最后是推文方法：

-(void)showTweetSheet
{
    SLComposeViewController *tweetSheet = [SLComposeViewController
                                           composeViewControllerForServiceType:
                                           SLServiceTypeTwitter];

    tweetSheet.completionHandler = ^(SLComposeViewControllerResult result) {
        switch(result) {
            case SLComposeViewControllerResultCancelled:
                break;
            case SLComposeViewControllerResultDone:
                break;
        }
    };

    [tweetSheet setInitialText:@"Text"];

     if (![tweetSheet addImage:@"image selected from imagepicker"]) {
         NSLog(@"Unable to add the image!");
     }

     if (![tweetSheet addURL:[NSURL URLWithString:@"http://twitter.com/"]]){
         NSLog(@"Unable to add the URL!");
     }

     [self presentViewController:tweetSheet animated:NO completion:^{
        NSLog(@"Tweet sheet has been presented.");
    }];
     }

Answer 1

在单独的方法中编写 SlcomposeViewController 代码

-(void)showTweetSheet
 {
      SLComposeViewController *tweetSheet = 
       [SLComposeViewController composeViewControllerForServiceType: SLServiceTypeTwitter];

      tweetSheet.completionHandler = ^(SLComposeViewControllerResult result) {
          switch(result) {
             case SLComposeViewControllerResultCancelled:
                  break;
             case SLComposeViewControllerResultDone:
                  break;
          }
      };

     [tweetSheet setInitialText:@"Text];

     if (![tweetSheet addImage:image]) {
         NSLog(@"Unable to add the image!");
     }       

     if (![tweetSheet addURL:[NSURL URLWithString:@"http://twitter.com/"]]){
         NSLog(@"Unable to add the URL!");
     }

     [self presentViewController:tweetSheet animated:NO completion:^{
         NSLog(@"Tweet sheet has been presented.");
      }]; 
}

当关闭 imagePickerController

[[picker presentingViewController] dismissViewControllerAnimated:YES completion:^{
    [self showTweetSheet]
}];

同时在 .h 文件中声明您的图像实例

UIImage *image;