应用程序崩溃例外： - [NSConcreteMutableData _fastCharacterContents] [英] App crashing with exception: -[NSConcreteMutableData _fastCharacterContents]
本文介绍了应用程序崩溃例外： - [NSConcreteMutableData _fastCharacterContents]的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
根据@source参数的要求将其转换为NSData。
NSData * data = [NSData dataWithContentsOfURL：localUrl];
__block ACAccount * facebookAccount = nil;
ACAccountType * facebookAccountType = [self.accountStore accountTypeWithAccountTypeIdentifier：ACAccountTypeIdentifierFacebook];
//指定应用程序ID和权限
NSDictionary * options = @ {
ACFacebookAppIdKey：@xxxxxxxxxxxxxx，
ACFacebookPermissionsKey：@ [@电子邮件]，
ACFacebookAudienceKey：ACFacebookAudienceEveryone
}; //基本读取权限
[self.accountStore requestAccessToAccountsWithType：facebookAccountType
选项：选项完成：^（BOOL授予，NSError * e）
{
如果）{
//现在你有发布权限执行请求
NSDictionary * options2 = @ {
ACFacebookAppIdKey：@xxxxxxxxxxxxxx，
ACFacebookPermissionsKey：@ [@publish_stream ，@publish_actions]，
ACFacebookAudienceKey：ACFacebookAudienceFriends
};
[self.accountStore requestAccessToAccountsWithType：facebookAccountType选项：options2完成：^（BOOL授予，NSError *错误）{
如果（被授予）{
NSArray * accounts = [self.accountStore accountsWithAccountType：facebookAccountType ]。
facebookAccount = [accounts lastObject];
/ * NSDictionary * parameters = @ {@message：@这是一个测试，
@name：@共享教程，
@标题：@构建优秀的社交应用程序并获得更多的安装，
@description：@允许您的用户使用iOS SDK从您的应用程序在Facebook上分享故事，
@ link：@https://developers.facebook.com/docs/ios/share/，
@source：data}; * /
NSMutableDictionary * parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys：
@我的帽子图像，@消息，数据，@源，nil];
NSURL * feedURL = [NSURL URLWithString：@https://graph.facebook.com/me/photos];
SLRequest * feedRequest = [SLRequest
requestForServiceType：SLServiceTypeFacebook
requestMethod：SLRequestMethodPOST
URL：feedURL
参数：参数];
NSLog（@AnythingHere？）;
[feedRequest setAccount：facebookAccount];
[feedRequest performRequestWithHandler：^（NSData * responseData，
NSHTTPURLResponse * urlResponse，NSError * error）
{
//处理响应
NSLog（@ ％@％@，error，urlResponse）;
NSDictionary * response = [NSJSONSerialization JSONObjectWithData：responseData选项：kNilOptions错误：nil];
NSLog（@Facebook Response：％@，response）;
}];
}
else {
NSLog（@Access denied 2）;
NSLog（@％@，[错误描述]）;
}
}];
} else {
NSLog（@Error：％@，[e description]）;
NSLog（@访问被拒绝）;
}
}];
这个错误背后的原因是什么？
解决方案
这只是一个受过教育的猜测，因为我从未使用过社交框架，但评论太长了。
根据这个回答，我会说你正在使用 SLRequest 错误。我确定异常来自您的数据对象，它被解释为NSString（或NSURL）。
也许你应该使用 addMultipartData：withName：type：filename： 将您的照片附加到请求。
NSMutableDictionary * parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys：
@我的帽子图像，@message，nil] ;
NSURL * feedURL = [NSURL URLWithString：@https://graph.facebook.com/me/photos];
SLRequest * feedRequest = [SLRequest
requestForServiceType：SLServiceTypeFacebook
requestMethod：SLRequestMethodPOST
URL：feedURL
参数：参数];
[feedRequest addMultipartData：data
withName：@source
type：@multipart / form-data
filename：@Test Image];
这些代码与另一个答案
I am trying to share data with facebook. I am able to share data except image stored locally in iPhone memory. But when I try to share image stored locally with parameter @"source" my app gets terminated with error "[NSConcreteMutableData _fastCharacterContents]".
For sharing a local image I am converting it into NSData as required by @"source" parameter.
NSData *data = [NSData dataWithContentsOfURL:localUrl];
__block ACAccount *facebookAccount = nil;
ACAccountType *facebookAccountType = [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
// Specify App ID and permissions
NSDictionary *options = @{
ACFacebookAppIdKey: @"xxxxxxxxxxxxxx",
ACFacebookPermissionsKey: @[@"email"],
ACFacebookAudienceKey: ACFacebookAudienceEveryone
}; // basic read permissions
[self.accountStore requestAccessToAccountsWithType:facebookAccountType
options:options completion:^(BOOL granted, NSError *e)
{
if (granted) {
// Now that you have publish permissions execute the request
NSDictionary *options2 = @{
ACFacebookAppIdKey: @"xxxxxxxxxxxxxx",
ACFacebookPermissionsKey: @[@"publish_stream", @"publish_actions"],
ACFacebookAudienceKey: ACFacebookAudienceFriends
};
[self.accountStore requestAccessToAccountsWithType:facebookAccountType options:options2 completion:^(BOOL granted, NSError *error) {
if (granted) {
NSArray *accounts = [self.accountStore accountsWithAccountType:facebookAccountType];
facebookAccount = [accounts lastObject];
/*NSDictionary *parameters = @{@"message": @"This is a test",
@"name": @"Sharing Tutorial",
@"caption": @"Build great social apps and get more installs.",
@"description": @"Allow your users to share stories on Facebook from your app using the iOS SDK.",
@"link": @"https://developers.facebook.com/docs/ios/share/",
@"source":data};*/
NSMutableDictionary *parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys:
@"My hat image", @"message", data, @"source", nil];
NSURL *feedURL = [NSURL URLWithString:@"https://graph.facebook.com/me/photos"];
SLRequest *feedRequest = [SLRequest
requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodPOST
URL:feedURL
parameters:parameters];
NSLog(@"AnythingHere?");
[feedRequest setAccount:facebookAccount];
[feedRequest performRequestWithHandler:^(NSData *responseData,
NSHTTPURLResponse *urlResponse, NSError *error)
{
// Handle response
NSLog(@"%@%@", error,urlResponse);
NSDictionary *response = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:nil];
NSLog(@"Facebook Response : %@",response);
}];
}
else {
NSLog(@"Access denied 2");
NSLog(@"%@", [error description]);
}
}];
} else {
NSLog(@"Error: %@", [e description]);
NSLog(@"Access denied");
}
}];
What can be the reason behind this error?
解决方案
This is just an educated guess because I've never used the Social framework, but it's too long for a comment.
Judging by this answer I would say that you are using SLRequest wrong. I'm pretty sure that the exception comes from your data object which is interpreted as a NSString (or NSURL).
Maybe you should use addMultipartData:withName:type:filename: to attach your photo to the request.
NSMutableDictionary *parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys:
@"My hat image", @"message", nil];
NSURL *feedURL = [NSURL URLWithString:@"https://graph.facebook.com/me/photos"];
SLRequest *feedRequest = [SLRequest
requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodPOST
URL:feedURL
parameters:parameters];
[feedRequest addMultipartData:data
withName:@"source"
type:@"multipart/form-data"
filename:@"Test Image"];
which is basically the same code as another answer
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