ios - 意外的标识符 SLComposerView

Question

大家好，遇到重大错误时我被告知 SLComposerViewController 无法识别。 UIController 没有可见的接口(interface)，如果正确编写，我的 else 语句中没有预期的标识符。它也无法识别我的 actionContoller 或我的 twitterVC。我在学校，这是我得到的代码示例，我已经检查过它并对其进行了三次检查，它是逐字写在指令示例中的，这让我感到困惑，因为总共有 12 个错误。任何人都可以给我纠正这些错误的任何帮助都会很棒!

//  ViewController.m
//  SocialNetworkApp
//
//  Created by Jessy on 2/12/18.
//  Copyright © 2018 A3LeversPeer. All rights reserved.
//

#import "ViewController.h"
#import "Social/Social.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UITextView *tweetTextView;
- (void) configureTweetTextView;
- (void) showAlertMessage: (NSString *) myMessage;

@property (weak, nonatomic) IBOutlet UITextView *fbTextView;

@property (weak, nonatomic) IBOutlet UITextView *socialTextView;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self configureTweetTextView];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void) showAlertMessage:(NSString *) myMessage {
    UIAlertController *alertController;
    alertController = [UIAlertController alertControllerWithTitle:@"TwitterShare" message:myMessage preferredStyle: UIAlertControllerStyleAlert];
    [alertController addAction: [UIAlertAction actionWithTitle:@"Okay" style:UIAlertActionStyleDefault handler:nil]];
    [self presentViewController:alertController animated:YES completion:nil];
}

- (IBAction)tweetShareAction:(id)sender {

    if ([self.tweetTextView isFirstResponder]) {
        [self.tweetTextView resignFirstResponder];
}

UIAlertController *actionController = [UIAlertController alertControllerWithTitle:@"" message:@"Tweet Notes" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction *cancelAction =[UIAlertAction actionWithTitle:@"Cancel" style: UIAlertActionStyleDefault handler:nil];

    UIAlertAction *tweetAction =[UIAlertAction actionWithTitle:@"Tweet"style: UIAlertActionStyleDefault handler:
                                 ^(UIAlertAction *action) {
if([SLComposeViewController
        isAvailableForServiceType:SLServiceTypeTwitter]
(SLComposeViewController *twitterVC= [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeTwitter]);
}];
    //Tweet Out
    if( [self.tweetTextView.text length] <140 ) {
    [twitterVC setInitialText:self.tweetTextView.text];
}
        else{
NSString *shortText = [self.tweetTextView.text substringToIndex:140];
}

[self.presentedViewController: twitterVC animated:YES completion:nil];
}

else{
    //Raise Objection

    [self showAlertMessage:@"Sign in to Twitter"];
[actionController addAction:tweetAction];
[actionController addAction:cancelAction];

[self presentViewController:actionController animated:YES completion:nil];

- (void) configureTweetTextView {
    self.tweetTextView.layer.backgroundColor =[UIColor colorWithRed: 0.98
                green: 0.80                                                                                       blue: 0.93
                    alpha: 1.0].CGColor;

    self.tweetTextView.layer.cornerRadius= 10.0;
    self.tweetTextView.layer.borderColor= [UIColor colorWithWhite: 0
                                                            alpha: 0.5].CGColor;
    self.tweetTextView.layer.borderWidth= 2.0;
}

- (IBAction)fbShareAction:(id)sender {
}
- (IBAction)socialShareAction:(id)sender {
}
- (IBAction)nothingShareAction:(id)sender {
}


@end

Answer 1

尝试替换:

#import "Social/Social.h"

通过:

#import <Social/Social.h>

Social 是 Apple 的框架，所以你应该用 <> 导入它。签名。

顺便检查一下你的Target -> General -> Linked Frameworks and Libraries您包含在 Social.framework 中。