Question

我实现了一个UIAlertView，它显示一个tableView进行选择并返回到底层视图控制器。

警报视图弹出正常，显示所有数据，当我点击取消按钮时它没有响应，然后我再次点击它，它移动位置四分之一英寸，然后当我第三次点击它，alertView终于消失了。

什么会导致这种行为？

这是代码：

-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer
{
CGPoint p = [gestureRecognizer locationInView:self.tableView];

NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:p];
if (indexPath == nil){
    NSLog(@"long press on table view but not on a row");
}
else {
    NSLog(@"long press on table view at row %d", indexPath.row);
    selectedQuote = [self.quotes objectAtIndex:indexPath.row];

    NSLog(@"         subject title = %@", selectedQuote.title);

    // NOW PULL UP THE ADD QUOTE MAP CONTROLLER SO THIS QUOTE CAN BE ADDED TO ANOTHER CATEGORY

    if(aqmController == nil)
        aqmController = [[AddQuoteMapController alloc] initWithNibName:@"AddQuoteMapController" bundle:nil];

    aqmController.selectedQuote = self.selectedQuote;

    //POP UP SBTableAlert

    SBTableAlert *alert;
    alert   = [[SBTableAlert alloc] initWithTitle:@"Categorize this Quote" cancelButtonTitle:@"Cancel" messageFormat:@""];

    [alert setType:SBTableAlertTypeMultipleSelct];
    [alert.view addButtonWithTitle:@"OK"];
    [alert.view setTag:0];
    [alert setStyle:SBTableAlertStyleApple];

    [alert setDelegate:self];
    [alert setDataSource:self];

    [alert show];

}

}

#pragma mark - SBTableAlertDataSource

- (UITableViewCell *)tableAlert:(SBTableAlert *)tableAlert cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell;

cell = [[[SBTableAlertCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil] autorelease];

Category *cat = [categories objectAtIndex:indexPath.section];

Subject *sub = [cat.subjects objectAtIndex:indexPath.row];

cell.textLabel.text =sub.title;   
cell.detailTextLabel.text = sub.category_title;

return cell;

}

- (NSInteger)tableAlert:(SBTableAlert *)tableAlert numberOfRowsInSection:(NSInteger)section {

Category *cat = [categories objectAtIndex:section];
return cat.subjects.count;

}

- (NSInteger)numberOfSectionsInTableAlert:(SBTableAlert *)tableAlert {

QuotesAppDelegate *appDelegate = (QuotesAppDelegate *)[[UIApplication sharedApplication] delegate];
self.categories = [appDelegate categories];

return self.categories.count;

}

- (NSString *)tableAlert:(SBTableAlert *)tableAlert titleForHeaderInSection:(NSInteger)section {

Category *cat = [categories objectAtIndex:section];
NSString *title = [cat category_title];

return title;
}

#pragma mark - SBTableAlertDelegate

- (void)tableAlert:(SBTableAlert *)tableAlert didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

Category *cat = [categories objectAtIndex:indexPath.section];

Subject *sub = [cat.subjects objectAtIndex:indexPath.row];

selectedSubject = sub;
NSLog(@"selectedSubject = %@", selectedSubject.title);

//INSERT INTO QUOTEMAP TABLE

// GET SUBJECT_ID
NSString *stringOfSubjectId = [NSString stringWithFormat:@"%d", selectedSubject.subject_id];

NSLog(@"mySubjectId= %@", stringOfSubjectId);

// GET THE NEXT QUOTE_MAP_ID

QuotesAppDelegate *appDelegate = (QuotesAppDelegate *)[[UIApplication sharedApplication] delegate];
QuoteMap *qm = [[QuoteMap alloc] init];

NSInteger newQuoteMapId = [appDelegate getNextQuoteMapId];
NSLog(@"quote_map_id= %d   subId = %@   quoteId = %@", newQuoteMapId, stringOfSubjectId, selectedQuote.quote_id);

// INSERT INTO QUOTE_MAP TABLE
NSString *stringOfId = [NSString stringWithFormat:@"%d", newQuoteMapId];

qm.quote_map_id = stringOfId;
qm.subject_id   = stringOfSubjectId;
qm.quote_id     = selectedQuote.quote_id;
//qm.isDirty      = YES;

[qm insertQuoteMap:qm];

//Add it to the array.
[qmv.quoteMaps addObject:qm];
[qmv.tableView reloadData];

if (tableAlert.type == SBTableAlertTypeMultipleSelct) {
    UITableViewCell *cell = [tableAlert.tableView cellForRowAtIndexPath:indexPath];
    if (cell.accessoryType == UITableViewCellAccessoryNone)
        [cell setAccessoryType:UITableViewCellAccessoryCheckmark];
    else
        [cell setAccessoryType:UITableViewCellAccessoryNone];

    [tableAlert.tableView deselectRowAtIndexPath:indexPath animated:YES];
}

//release
[qm autorelease];


}

- (void)tableAlert:(SBTableAlert *)tableAlert didDismissWithButtonIndex:(NSInteger)buttonIndex     {
NSLog(@"Dismissed: %i", buttonIndex);

[tableAlert release];
}

- (void)dealloc{

[qmv release];   
[subjects release];
[categories release]; 
[selectedSubject release];

}

Answer 1

也许您应该使用SBTableAlertDatasource和SBTableAlertDelegate方法而不是UITableViewDatasource和UITableviewDelegate方法。

手势也是UILongPressGestureRecognizer。这是一个连续的识别器。您需要检查识别器的状态并忽略UIGestureRecognizerStateBegan之后的所有事件

为什么我的AlertView点击取消按钮3次关闭？

1 个答案: