如果用户已经登录，我想在 getinfo() 函数中从我的应用程序打开 iphone 官方设置，如果没有用户登录，则无需打开 iphone 的官方设置应用程序当前打开 iphone 的官方设置我无法打开 iphone 设置。
- (IBAction)twitterLogin:(id)sender {
[self getInfo];
}
- (void) getInfo
{
// Request access to the Twitter accounts
ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *accountType = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
[accountStore requestAccessToAccountsWithType:accountType options:nil completion:^(BOOL granted, NSError *error){
if (granted) {
GET_DEFAULTS
[defaults setInteger:1 forKey:kHasUserRemembered];
[defaults synchronize];
NSArray *accounts = [accountStore accountsWithAccountType:accountType];
ACAccount *twitterAccount = [accounts objectAtIndex:0];
GET_DBHANDLER
NSDictionary *tempDict = [[NSMutableDictionary alloc] initWithDictionary:
[twitterAccount dictionaryWithValuesForKeys:[NSArray arrayWithObject:@"properties"]]];
NSString *tempUserID = [[tempDict objectForKey:@"properties"] objectForKey:@"user_id"];
NSLog(@"userid: %@", tempUserID);
userDC *user = [dbHandler authenticate_User:twitterAccount.username andPassword: @"" andIsFB:0 AndIsTwitter:1];
[defaults setObject:tempUserID forKey:kHastwitterID];
[defaults synchronize];
[self gotoMainView];
}
else {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"prefs:root=General"]];
NSLog(@"No access granted");
}
}];
}