爲什麼我的AlertView取消3次點擊取消按鈕關閉？

Question

我實現了一個UIAlertView，它顯示一個tableView來做出選擇並返回到底層視圖控制器。

警報視圖彈出正常，顯示所有數據，當我點擊取消按鈕它沒有響應，然後我再次點擊它，它移動位置四分之一英寸，然後當我點擊它的第三個時間，alertView終於消失。

什麼會導致這種類型的行爲？

這是代碼：

-(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

也許你應該使用SBTableAlertDatasource和SBTableAlertDelegate方法，而不是UITableViewDatasource和的UITableViewDelegate方法。

另外手勢是UILongPressGestureRecognizer。這是一個持續的認識者。您需要檢查識別器的狀態，並忽略所有發生在UIGestureRecognizerStateBegan後的事件。