我试图在详情视图控制器中显示Instagram评论。我正在从下面显示的主视图控制器推送数据：
MessageViewController *message = [[MessageViewController alloc] init];
NSInteger row = [[self tableView].indexPathForSelectedRow row];
NSDictionary *pic = [instaPics objectAtIndex:row];
message.instagramData = pic;
[self.navigationController pushViewController:message animated:YES];
然而，当我点击按钮转到详细视图控制器时，我收到此错误：
2015-05-02 01:29:56.464 Floadt[40646:4284271] Successfully commented Picture
2015-05-02 01:29:56.516 Floadt[40646:4284271] -[__NSCFArray objectForKeyedSubscript:]: unrecognized selector sent to instance 0x7fd06be6cc40
2015-05-02 01:29:56.529 Floadt[40646:4284271] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFArray objectForKeyedSubscript:]: unrecognized selector sent to instance 0x7fd06be6cc40'
*** First throw call stack:
(
0 CoreFoundation 0x000000010dc5bc65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x000000010d537bb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010dc630ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010dbb913c ___forwarding___ + 988
4 CoreFoundation 0x000000010dbb8cd8 _CF_forwarding_prep_0 + 120
5 Floadt 0x000000010a1104d0 -[MessageViewController messageCellForRowAtIndexPath:] + 256
6 Floadt 0x000000010a11035c -[MessageViewController tableView:cellForRowAtIndexPath:] + 188
7 UIKit 0x000000010c36ca28 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 508
8 UIKit 0x000000010c34b248 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2853
9 UIKit 0x000000010c3618a9 -[UITableView layoutSubviews] + 210
10 UIKit 0x000000010c2eba2b -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 536
11 QuartzCore 0x000000010c0afec2 -[CALayer layoutSublayers] + 146
12 QuartzCore 0x000000010c0a46d6 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
13 UIKit 0x000000010c2df675 -[UIView(Hierarchy) layoutBelowIfNeeded] + 607
14 Floadt 0x000000010a0908a8 -[SLKTextViewController viewWillAppear:] + 296
15 UIKit 0x000000010c39ffa1 -[UIViewController _setViewAppearState:isAnimating:] + 487
16 UIKit 0x000000010c3c1395 -[UINavigationController _startCustomTransition:] + 887
17 UIKit 0x000000010c3cd3bf -[UINavigationController _startDeferredTransitionIfNeeded:] + 386
18 UIKit 0x000000010c3cdf0e -[UINavigationController __viewWillLayoutSubviews] + 43
19 UIKit 0x000000010c518715 -[UILayoutContainerView layoutSubviews] + 202
20 UIKit 0x000000010c2eba2b -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 536
21 QuartzCore 0x000000010c0afec2 -[CALayer layoutSublayers] + 146
22 QuartzCore 0x000000010c0a46d6 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
23 QuartzCore 0x000000010c0a4546 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
24 QuartzCore 0x000000010c010886 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
25 QuartzCore 0x000000010c011a3a _ZN2CA11Transaction6commitEv + 462
26 QuartzCore 0x000000010c0120eb _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
27 CoreFoundation 0x000000010db8eca7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
28 CoreFoundation 0x000000010db8ec00 __CFRunLoopDoObservers + 368
29 CoreFoundation 0x000000010db84a33 __CFRunLoopRun + 1123
30 CoreFoundation 0x000000010db84366 CFRunLoopRunSpecific + 470
31 GraphicsServices 0x000000010f611a3e GSEventRunModal + 161
32 UIKit 0x000000010c26b900 UIApplicationMain + 1282
33 Floadt 0x000000010a113c5f main + 111
34 libdyld.dylib 0x000000010fe26145 start + 1
35 ??? 0x0000000000000001 0x0 + 1
)
这是我将UITableViewCell添加到表视图控制器的设置代码：
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 2;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
return [self messageCellForRowAtIndexPath:indexPath];
}
- (MessageTableViewCell *)messageCellForRowAtIndexPath:(NSIndexPath *)indexPath
{
MessageTableViewCell *cell = (MessageTableViewCell *)[self.tableView dequeueReusableCellWithIdentifier:MessengerCellIdentifier];
NSDictionary *instaPics = self.instagramData;
NSString *commentText = instaPics[@"comments"][@"data"][@"text"];
Message *message = self.messages[indexPath.row];
cell.titleLabel.text = message.username;
cell.bodyLabel.text = commentText;
if (message.attachment) {
cell.attachmentView.image = message.attachment;
cell.attachmentView.layer.shouldRasterize = YES;
cell.attachmentView.layer.rasterizationScale = [UIScreen mainScreen].scale;
}
cell.indexPath = indexPath;
cell.usedForMessage = YES;
if (cell.needsPlaceholder)
{
CGFloat scale = [UIScreen mainScreen].scale;
if ([[UIScreen mainScreen] respondsToSelector:@selector(nativeScale)]) {
scale = [UIScreen mainScreen].nativeScale;
}
CGSize imgSize = CGSizeMake(kAvatarSize*scale, kAvatarSize*scale);
[LoremIpsum asyncPlaceholderImageWithSize:imgSize
completion:^(UIImage *image) {
UIImage *thumbnail = [UIImage imageWithCGImage:image.CGImage scale:scale orientation:UIImageOrientationUp];
cell.thumbnailView.image = thumbnail;
cell.thumbnailView.layer.shouldRasterize = YES;
cell.thumbnailView.layer.rasterizationScale = [UIScreen mainScreen].scale;
}];
}
// Cells must inherit the table view's transform
// This is very important, since the main table view may be inverted
cell.transform = self.tableView.transform;
return cell;
}
Instagram JSON数据：
{
attribution = "<null>";
caption = {
"created_time" = 1430594453;
from = {
"full_name" = "Siwani Regmi";
id = 247899182;
"profile_picture" = "https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/10948979_810376228999798_661235337_a.jpg";
username = "siwani_32";
};
id = 976219494210952254;
text = "perfect night with the most perfect man\Ud83d\Ude1b\Ud83c\Udf89\U2728 #seniorprom";
};
comments = {
count = 0;
data = (
);
};
"created_time" = 1430594453;
filter = Normal;
id = "976219491862142549_247899182";
images = {
"low_resolution" = {
height = 306;
url = "https://scontent.cdninstagram.com/hphotos-xap1/t51.2885-15/s306x306/e15/11191276_1060001617348197_1550964556_n.jpg";
width = 306;
};
"standard_resolution" = {
height = 640;
url = "https://scontent.cdninstagram.com/hphotos-xap1/t51.2885-15/e15/11191276_1060001617348197_1550964556_n.jpg";
width = 640;
};
thumbnail = {
height = 150;
url = "https://scontent.cdninstagram.com/hphotos-xap1/t51.2885-15/s150x150/e15/11191276_1060001617348197_1550964556_n.jpg";
width = 150;
};
};
likes = {
count = 17;
data = (
{
"full_name" = "Bridget Carroll";
id = 223765496;
"profile_picture" = "https://igcdn-photos-e-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/11208422_409436919229236_670022667_a.jpg";
username = "bridget_carroll33";
},
{
"full_name" = "";
id = 190249955;
"profile_picture" = "https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xaf1/t51.2885-19/10747956_726218724133062_1939114518_a.jpg";
username = hayleymarierussell;
},
{
"full_name" = "Jill Bracaglia";
id = 205453413;
"profile_picture" = "https://instagramimages-a.akamaihd.net/profiles/profile_205453413_75sq_1373835555.jpg";
username = "jilli_beanz";
},
{
"full_name" = "Priya Nakhre";
id = 177807366;
"profile_picture" = "https://igcdn-photos-c-a.akamaihd.net/hphotos-ak-xtp1/t51.2885-19/11098479_870674976323434_1264837026_a.jpg";
username = priyanakhre;
}
);
};
link = "https://instagram.com/p/2MOnSjQV5V/";
location = {
id = 764529229;
};
tags = (
seniorprom
);
type = image;
user = {
"full_name" = "Siwani Regmi";
id = 247899182;
"profile_picture" = "https://igcdn-photos-g-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/10948979_810376228999798_661235337_a.jpg";
username = "siwani_32";
};
"user_has_liked" = 0;
"users_in_photo" = (
{
position = {
x = "0.358666667";
y = "0.32";
};
user = {
"full_name" = "Sahan Pandey \U26bd";
id = 435571613;
"profile_picture" = "https://igcdn-photos-a-a.akamaihd.net/hphotos-ak-xpa1/t51.2885-19/10727510_301263856731264_1868575282_a.jpg";
username = pandeyexpress;
};
}
);
}