我必须从xml读取数据并且必须在视图控制器中显示值。我正在使用tab barcontroller。我必须阅读xml数据，并在标签栏中显示为徽章。这是我的控制器代码。
-(void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
if([elementName isEqualToString:@"Event"]) {
//Initialize the array.
rssOutputData = [[NSMutableArray alloc] init];
mycount = [attributeDict objectForKey:@"count"];
NSLog(@"Reading count value :%@",mycount);
}
else if([elementName isEqualToString:@"eventdashboard"]) {
//Initialize the book.
aEvent = [[Eventlist alloc] init];
//Extract the attribute here.
aEvent.id = [[attributeDict objectForKey:@"userid"] integerValue];
NSLog(@"Reading id value :%d", aEvent.id);
}
NSLog(@"Processing Element: %@", elementName);
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(!nodecontent)
nodecontent = [[NSMutableString alloc] initWithString:string];else
[nodecontent appendString:string];
NSLog(@"Processing Value: %@", nodecontent);
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if([elementName isEqualToString:@"Event"])
return;
if([elementName isEqualToString:@"eventdashboard"]) {
[rssOutputData addObject:aEvent];
[aEvent release];
aEvent= nil;
}
else
[aEvent setValue:nodecontent forKey:elementName];
[nodecontent release];
nodecontent = nil;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"bg2.jpeg"]];
NSLog(@"%d",memberid);
myid = [SingleTonClass sinlgeTon].memberIdOne;
NSString *post =[[NSString alloc] initWithFormat:@"userid=%d",myid];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSURL *url = [NSURL URLWithString:@"http://journalonline.in/cfts/dashboards/dashboard?"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
// [theRequest addRequestHeader:@"Content-Type" value:@"application/xml"];
[theRequest setHTTPMethod:@"POST"];
[theRequest setValue:@"application/xml" forHTTPHeaderField:@"Accept"];
[theRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[theRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPBody:postData];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
webData = [[NSMutableData data] retain];
NSLog(@"%@",webData);
}
}
-(void)viewWillAppear:(BOOL)animated{
[tblView reloadData];
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
eventarray = [[NSMutableArray alloc]init];
xmlParserObject = [[NSXMLParser alloc] initWithData:webData];
[xmlParserObject setDelegate:self];
[xmlParserObject parse];
for (int i =0; i<[rssOutputData count]; i++) {
Eventlist *log = [rssOutputData objectAtIndex:i];
eventid = log.id;
NSLog(@"%d",eventid);
Invit = log.invitationdet;
NSLog(@"%@",Invit);
[eventarray addObject:log];
}
[connection release];
[tblView reloadData];
}
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
NSString * segueIdentifier = [segue identifier];
if([segueIdentifier isEqualToString:@"MainEventList"]){
UINavigationController *nav = [segue destinationViewController];
MaineventListController *MVC = (MaineventListController *)nav.topViewController;
MVC.memberid1 = [SingleTonClass sinlgeTon].memberIdOne;
NSLog(@"%d",MVC.memberid1);
}
if ([segue.identifier isEqualToString:@"EventListDetail"])
{
NSIndexPath *indexPath = [tblView indexPathForSelectedRow];
[[SingleTonClass sinlgeTon] addObjectsColorArray:[NSString stringWithFormat:@"%d",indexPath.row]];
MainEventDetailController *destViewController = segue.destinationViewController;
MainEvent *aEvent1 = [eventarray objectAtIndex:indexPath.row];
destViewController.eveID = aEvent1.id;
destViewController.usrid = [SingleTonClass sinlgeTon].memberIdOne;
}
}
-(void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [eventarray count];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (section == 0)
return [eventarray count];
if (section == 1)
return 1;
return 0;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"eventCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if(indexPath.section == 0)
{
Eventlist *msglist = [eventarray objectAtIndex:indexPath.row];
cell.textLabel.text = msglist.invitationdet;
NSLog(@"Array %@",[SingleTonClass sinlgeTon].colorArray);
NSInteger stat=msglist.readflag;
if([[SingleTonClass sinlgeTon].colorArray containsObject:[NSString stringWithFormat:@"%d",indexPath.row]] || stat == 1 ) {
NSInteger stat1 = msglist.responseflag;
if(stat1 == 1){
cell.textLabel.textColor = [UIColor yellowColor];
}
else {
cell.textLabel.textColor = [UIColor redColor];
}
}
else{
cell.textLabel.textColor = [UIColor greenColor];
}
cell.backgroundColor = [UIColor blackColor];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
if(indexPath.section == 1)
{
UIButton *viewmoreButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
viewmoreButton.frame = CGRectMake(200.0f, 5.0f, 80.0f, 30.0f);
[viewmoreButton setTitle:@"View More" forState:UIControlStateNormal];
[cell addSubview:viewmoreButton];
[viewmoreButton addTarget:self
action:@selector(viewMore:)
forControlEvents:UIControlEventTouchUpInside];
cell.backgroundColor = [ UIColor blackColor];
}
return cell;
}
- (void)viewMore:(id)sender
{
[self performSegueWithIdentifier:@"MainEventList" sender:sender];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
-(void) dealloc
{
[xmlParserObject release];
[super dealloc];
}
这是从XML
中读取值 mycount = [attributeDict objectForKey:@"count"];
我不知道在标签栏中显示为徽章。我试图在ViewdidLoad下显示它，但没有工作 请帮助我的朋友
答案 0 :(得分：70)
让我告诉你设置徽章价值的最简单方法：
[[self navigationController] tabBarItem].badgeValue = @"YourBadgeValue";
答案 1 :(得分：55)
如果您想更改当前标签的徽章，Vineet Singh的答案很好。如果您需要更改标签栏中另一个标签的值，请使用以下内容：
目标C
[[self.tabBarController.tabBar.items objectAtIndex:0] setBadgeValue:nil];
夫特
tabBarController?.tabBar.items?[0].badgeValue = nil
请记住将我使用的索引替换为您要为其编辑值的实际选项卡。
答案 2 :(得分：5)
AppDelegate *appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
UITabBarItem *tbItem = (UITabBarItem *)[appDelegate.tabBarController.tabBar.items objectAtIndex:tabIndex];
tbItem.badgeValue = [NSString stringWithFormat:@"%i", count];
答案 3 :(得分：2)
试试这个：
tabBarItem.badgeValue = [NSString stringWithFormat:@"%d",count];
答案 4 :(得分：2)
swift 2.0：
self.navigationController!.tabBarItem.badgeValue = "YourBadgeValue"
答案 5 :(得分：1)
我看到有关在TabItem上设置此内容的一些答案，但如果从未加载该选项卡，则viewDidLoad函数将永远不会被加载。当您尝试创建后台进程（例如推送通知处理设置选项卡徽章）时，这一点尤为重要。您更有可能需要TabViewController来处理徽章设置。 TabItem上的标签似乎更合适，然后翻阅标签，直到找到要更新的标签。
干杯！
答案 6 :(得分：1)
int indexOfTabbarItem = 0;
NSString *badgeValue = [NSString stringWithFormat:@"%lu", (long)countUnreadMessages];
[[[[self viewControllers] objectAtIndex:indexOfTabbarItem] tabBarItem] setBadgeValue:([badgeValue isEqualToString:@"0"]) ? nil : badgeValue];
这对我有用。有时你必须找到合适的控制器，然后找到它的项目进行设置。欢呼声。
答案 7 :(得分：-1)
对于离子角度，您只需将值绑定到tabBadge
<ion-tab [root]="tab3Root" tabIcon="notifications" tabBadgeStyle="red" tabBadge={{totalUnread}}></ion-tab>