0
slrequest performrequestwithhandler摊位后,我试图拉用户的Twitter句柄,并填充到一个tableview中一个文本框。请求成功完成并调用执行块,但UI需要几秒钟才能更新。我已经尝试使用NSNotifications来触发UI更改,但是在更新UI方面仍然存在延迟。下面是我用从ACAccountStore,我使用表的唯一特殊类是提取信息的自定义的UITableViewCell的代码。有没有人看到这个?或者我错过了导致运行时问题的东西?更新文本框与Twitter手柄
- (IBAction)connectTwitter:(id)sender {
UISwitch *sw = (UISwitch *)sender;
if (sw.isOn == NO) {
return;
}
ACAccountStore *account = [[ACAccountStore alloc] init];
ACAccountType *accountType = [account accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
__weak MBSuitUpViewController *weakSelf = self;
[account requestAccessToAccountsWithType:accountType options:nil completion:^(BOOL granted, NSError *error) {
if (granted == YES) {
NSArray *arrayOfAccounts = [account accountsWithAccountType:accountType];
if (arrayOfAccounts.count > 0) {
ACAccount *twitterAccount = [arrayOfAccounts lastObject];
NSURL *requestURL = [NSURL URLWithString:@"https://api.twitter.com/1/account/verify_credentials.json"];
SLRequest *user = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodGET URL:requestURL parameters:nil];
user.account = twitterAccount;
[user performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:nil];
[weakSelf twitterDictionaryHandler:json];
weakSelf.userInfo = @{@"name": json[@"name"], @"handle":json[@"screen_name"]};
}];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"No Twitter Account Found" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Okay", nil];
[alert show];
}
} else {
NSLog(@"Permission denied %@", error.localizedDescription);
}
}];
}
- (void)twitterDictionaryHandler:(NSDictionary *)dictionary {
MBSuitUpCell *username = (MBSuitUpCell *)[self.view viewWithTag:2];
username.textField.text = dictionary[@"screen_name"];
NSLog(@"Should update textfield");
}
它实际上会立即调用twitterDictionaryHandler函数。由于我保存用户信息,我试着用tableview重新加载它,检查用户信息。我记录的块和表重载的端部,看到从块表重载的端部11秒的延迟。 –
感谢使用GCD运行它的建议,我撞着twitterDictionaryHandler到主队列和它的第二内更新。 –