Question

我有一个非常棘手的情况。我所做的一切都是以编程方式完成的。

1）我有UITableView 2）在这个tableview的每个单元格中，我都有一个uibutton 3）点击UIButton我想显示一个UIAlertView，其中有“是”而非“按钮” 4）单击是按钮我想删除UIButton已显示此警报视图的单元格。

以下是我的代码段：

- (void) removeFriends:(id)sender
{
    /* 
     I want to show alertview at here...

     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"CONFIRM",nil) message:NSLocalizedString(@"REMOVE_FRIEND",nil)  delegate:self cancelButtonTitle:@"No"  otherButtonTitles:@"Yes", nil];

     alert.tag = 21;

     alert.accessibilityIdentifier = @"Remove";

     [alert show];

     */

    UIButton *btn = (UIButton*)sender;

    int indx = btn.tag;
    NSString *friend_id = [friendsId valueForKey:[NSString stringWithFormat:@"%d",indx]];

    // URL creation
    NSString *path = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"path"];

    NSString *address = [NSString stringWithFormat:@"%@%@%@", path,@"users/",usrId];

    NSURL *URL = [NSURL URLWithString:address];

    // request creation
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL cachePolicy:NSURLCacheStorageAllowedInMemoryOnly
                                                       timeoutInterval:60.0];
    [request setHTTPMethod:@"DELETE"];

    responseData = [[NSMutableData alloc] init];

    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    [connection start];

    UITableViewCell *buttonCell = (UITableViewCell *)[btn superview];
    NSIndexPath* pathOfTheCell = [self.table indexPathForCell:buttonCell];

    [self.table deleteRowsAtIndexPaths:[NSArray arrayWithObjects:pathOfTheCell, nil] withRowAnimation:UITableViewRowAnimationFade];
    [self viewDidLoad];
    [self.table reloadData];
}

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if([alertView.accessibilityIdentifier isEqualToString:@"Remove"])
    {
        if (buttonIndex == 1)
        {
            // here want to make call to  server
        }
    }
}

Answer 1

在这种情况下，您可以在alertview标记中指定单元格索引，并使用此标记执行操作。

由于

更新

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if([alertView.accessibilityIdentifier isEqualToString:@"Remove"])
{
    if (buttonIndex == 1)
    {
        // here want to make call to  server
        // User alertView.tag as index to delete  
    }
}

}

Answer 2

就这样说：

NSString *friend_id = [friendsId valueForKey:[NSString stringWithFormat:@"%d",indx]];


// URL creation
NSString *path = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"path"];

NSString *address = [NSString stringWithFormat:@"%@%@%@", path,@"users/",usrId];

NSURL *URL = [NSURL URLWithString:address];

NSLog(@"%@",address);

// request creation
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL cachePolicy:NSURLCacheStorageAllowedInMemoryOnly
                                                   timeoutInterval:60.0];

[request setHTTPMethod:@"DELETE"];

responseData = [[NSMutableData alloc] init];

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];

UITableViewCell *buttonCell = (UITableViewCell *)[btn superview];
NSIndexPath* pathOfTheCell = [self.table indexPathForCell:buttonCell];

[self.table deleteRowsAtIndexPaths:[NSArray arrayWithObjects:pathOfTheCell, nil] withRowAnimation:UITableViewRowAnimationFade];
[self viewDidLoad];
[self.table reloadData];

进入这个：

if([alertView.accessibilityIdentifier isEqualToString:@"Remove"]){
    if (buttonIndex == 1) {

       // here want to make call to  server

    }
}

并在.h文件中创建一个属性，该属性将保存已按下的按钮的ID。像这样：

//in your .h file
@property (nonatomic, strong) NSString *yourId;

并在你的按钮动作中设置如下：

self.yourId = [friendsId valueForKey:[NSString stringWithFormat:@"%d",indx]];

在第一个代码段中，我猜您必须将usrId替换为self.yourId，因此它将是

NSString *address = [NSString stringWithFormat:@"%@%@%@", path,@"users/",self.yourId];

编辑：删除它：

UITableViewCell *buttonCell = (UITableViewCell *)[btn superview];

并改变这一点：

NSIndexPath* pathOfTheCell = [self.table indexPathForCell:buttonCell];

到此：

NSIndexPath* pathOfTheCell = [NSIndexPath indexPathForRow:self.yourId]

self.yourID是保存在indexPath.row媒体资源中的button.tag值。

Answer 3

view.h

@interface MyReservationViewController : UIViewController
{
    int Delete_row;
}

view.m

- (IBAction)delete_btn:(id)sender
{
    UIButton *buttontag = (UIButton *)sender;
    //NSLog(@"%d",buttontag.tag);
    Delete_row = buttontag.tag;

    UIAlertView *Alert = [[UIAlertView alloc]initWithTitle:@"Delete Reservation"   message:@"Are you sure to want Delete Reservation ??" delegate:self cancelButtonTitle:@"Delete" otherButtonTitles:@"Cancel",nil];
    Alert.tag=1;
    [Alert show];
    [Alert release];
}


-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{
    if(alertView.tag==1)
    {
        if(buttonIndex == 0)
        {
            NSLog(@"%d",Delete_row);
            //delete cell

            [Arr removeObject:Delete_row];
            [tbl reloadData];

        }
    }
}

Answer 4

-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if([alertView.accessibilityIdentifier isEqualToString:@"Remove"])
{
    if (buttonIndex == 1)
    {
        // add server call to delete the relevant data
        // and then refresh your array that you are using in cellForRowAtIndex
        //and reload table. thats it.
    }
}

点击uialertview中的按钮获取uitableviewcell的referance

4 个答案: