我正在使用我的 Twitter 应用程序。我在 TableView 中获取搜索结果。当我刷新搜索结果时，表格会填充新传入的推文，而较早的推文会消失。任何人都可以建议我一种在早期推文中添加新推文的方法吗？
//my array
-(NSMutableArray *)retrievedTweets
{
if (retrievedTweets == nil)
{
retrievedTweets = [NSMutableArray arrayWithCapacity:50];
}
return retrievedTweets;
}
-(BOOL)checkCanTweet
{
if ([TWTweetComposeViewController canSendTweet])
{
self.goButton.enabled = YES;
self.goButton.alpha = 1.0;
return YES;
}
else
{
self.goButton.enabled = NO;
self.goButton.alpha = 0.6;
return NO;
}
}
//search function
-(void)searchTweet{
if (retrievedTweets == nil) {
retrievedTweets=[[NSMutableArray alloc] init];
}
//retrievedTweets = nil;
if ([self checkCanTweet])
{
ACAccountStore *accountStore = [[ACAccountStore alloc] init];
ACAccountType *accountType =
[accountStore
accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter ];
[accountStore requestAccessToAccountsWithType:accountType
withCompletionHandler:^(BOOL granted, NSError *error)
{
if (granted)
{
NSArray *accountsArray = [accountStore accountsWithAccountType:accountType];
if ([accountsArray count] >0)
{
[self.retrievedTweets removeAllObjects];
NSString *str1 = [[NSString alloc]initWithFormat:@"http://search.twitter.com/search.json?q="];
//NSString *str2 = [[NSString alloc]initWithFormat:@"http://search.twitter.com/search.json?q=%23"];
NSString *textString = searchBarText.text;
NSString *urlString = [[NSString alloc]init];
if(textString==nil)
{
self.goButton.enabled = NO;
}
else {
self.goButton.enabled = YES;
unichar c = [textString characterAtIndex:0];
if(c == '#'){
NSString *newStr = [textString substringWithRange:NSMakeRange(1, [textString length]-1)];
urlString=[str1 stringByAppendingFormat:newStr];
}
else {
urlString = [str1 stringByAppendingFormat:searchBarText.text];
}
}
ACAccount *twitterAccount = [accountsArray objectAtIndex:0];
TWRequest *postRequest = [[TWRequest alloc] initWithURL:[NSURL URLWithString:urlString] parameters:nil
requestMethod:TWRequestMethodGET];
[postRequest setAccount:twitterAccount];
[postRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
{
if ([urlResponse statusCode] == 200)
{
NSError *jsonParsingError;
NSDictionary *homeTimeline = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&jsonParsingError];
NSDictionary *results=[homeTimeline objectForKey:@"results"];
Search *current;
for (NSDictionary *dict in results)
{
current = [[Search alloc] initWithDictionary:dict];
[self.retrievedTweets addObject:current];
}
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableViewPost reloadData];
});
}
else
{
NSLog(@"%@", [NSString stringWithFormat:@"HTTP response status: %i\n", [urlResponse statusCode]]);
}
// [self.tableViewPost reloadData];
}];
}
}
else
{
NSLog(@"Error, Twitter account access not granted.");
}
}];
}
[searchBarText resignFirstResponder];
}