Iphone 奇数UITableView行为

请看一下图片

我有一个自定义单元格和2个部分的UITableView。一旦UITableView填充了足够多的单元格，以至于它们都无法显示在屏幕上，最后一部分中的最后一个单元格将显示在屏幕的最顶部。该单元格甚至不应该在UITableView中可见，因为它是最后一个单元格，并且它完全显示在屏幕顶部的UITableView之外。我甚至不知道从哪里开始查找我的代码来解决这个问题。我只创建了几个UITableView，所以我肯定不是这个bug所有潜在原因的专家。表是通过IB设置的，初始化代码在VIEW中，尽管没有太多的设置代码。我目前正在阅读UITableView的scrollView以及contentInset，以了解是否有可能对这种行为进行解释。有人遇到过这样的错误吗？我觉得它足够独特，可能不需要梳理所有代码来确定。不管怎样，我将在下面发布相关代码。谢谢你的帮助

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath     *)indexPath
{

    NSString *uniqueIdentifierForPlayerCell = @"customPlayerCell";

    //Initialize PlayerTableViewCell and set it's properties
    PlayerTableViewCell *playerCell = nil;
    playerCell = (PlayerTableViewCell *)[tableView dequeueReusableCellWithIdentifier:uniqueIdentifierForPlayerCell];

    if (playerCell == nil) {

        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"PlayerTableViewCell" owner:nil options:nil];
        for(id currentObject in topLevelObjects) {
            if([currentObject isKindOfClass:[PlayerTableViewCell class]]) {
                playerCell = (PlayerTableViewCell *)currentObject;
                break;
            }
        }
    }
    playerCell.textLabel.opaque = NO;
    playerCell.textLabel.textColor = self.textColor;
    playerCell.textLabel.font = [UIFont systemFontOfSize:18.0];
    playerCell.textLabel.backgroundColor = [UIColor clearColor];
    playerCell.selectionStyle = UITableViewCellSelectionStyleNone;
    playerCell.accessoryButton.hidden = YES;
    playerCell.reorderButton.hidden = YES;

    NSString *uniqueIdentifierForAlleyCell = @"customAlleyCell";

    //Initialize AlleyTableViewcell and set it's properties
    AlleyTableViewCell *alleyCell = nil;
   alleyCell = (AlleyTableViewCell *)[tableView     dequeueReusableCellWithIdentifier:uniqueIdentifierForAlleyCell];

    if (alleyCell == nil) {

        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"AlleyTableViewCell" owner:nil options:nil];
        for(id currentObject in topLevelObjects) {
            if([currentObject isKindOfClass:[AlleyTableViewCell class]]) {
                alleyCell = (AlleyTableViewCell *)currentObject;
                break;
            }
        }
    }

    alleyCell.textLabel.opaque = NO;
    alleyCell.textLabel.textColor = self.textColor;
    alleyCell.textLabel.font = [UIFont systemFontOfSize:18.0];
    alleyCell.textLabel.backgroundColor = [UIColor clearColor];
    alleyCell.selectionStyle = UITableViewCellSelectionStyleNone;
    alleyCell.accessoryButton.hidden = YES;
    alleyCell.deleteButton.hidden = YES;

//Alternate background colors for each section where section 0 is Alley section and section 1 is Player section. Stores the RGB values of the specific background color to the specific cell for future use
if(indexPath.section == 0 && (indexPath.row %2 == 0)) {
    alleyCell.contentView.backgroundColor = self.backgroundColor;
    alleyCell.isRed = 95.0/255.0;
    alleyCell.isGreen = 94.0/255.0;
    alleyCell.isBlue = 94.0/255.0;
    self.alleyField.backgroundColor = self.backgroundColor;
}
else if(indexPath.section == 0 && (indexPath.row %2 == 1)){
    alleyCell.contentView.backgroundColor = self.alternateColor;
    alleyCell.isRed = 92.0/255.0;
    alleyCell.isGreen = 92.0/255.0;
    alleyCell.isBlue = 92.0/255.0;

    self.alleyField.backgroundColor = self.alternateColor;
}
else if(indexPath.section == 1 && (indexPath.row %2 == 0)) {
    playerCell.contentView.backgroundColor = self.backgroundColor;
    playerCell.isRed = 95.0/255.0;
    playerCell.isGreen = 94.0/255.0;
    playerCell.isBlue = 94.0/255.0;

    self.playerField.backgroundColor = self.backgroundColor;
}
else if(indexPath.section == 1 && (indexPath.row %2 == 1)) {
    playerCell.contentView.backgroundColor = self.alternateColor;
    playerCell.isRed = 92.0/255.0;
    playerCell.isGreen = 92.0/255.0;
    playerCell.isBlue = 92.0/255.0;

    self.playerField.backgroundColor = self.alternateColor;
}

//If Alley array is empty, add alley TextField and return cell
if(indexPath.section == 0) {
    if([self.allAlleys count] == 0) {
        [alleyCell addSubview:self.alleyField];
        self.alleyField.text = nil;
        return alleyCell;
    }
    //Else set the alley name to the nameLabel text and return cell
    else {
        if(indexPath.row < [self.allAlleys count]) {
            alleyCell.textLabel.text = [self.allAlleys objectAtIndex:indexPath.row];
            if([alleyCell.textLabel.text isEqualToString: self.selectedAlley]) {
                alleyCell.accessoryButton.hidden = NO;
            }
            else {
                alleyCell.accessoryButton.hidden = YES;
            }
            return alleyCell;
        }
        //Add alley TextField to the last cell of the UITableView and return cell
        else {
            [alleyCell addSubview:self.alleyField];
            self.alleyField.text = nil;
            return alleyCell;
        }
    }
}
//If Player array is empty, add Player TextField and return cell
else if(indexPath.section == 1) {
    if([self.bowlrNames count] == 0) {
        [playerCell addSubview:self.playerField];
        self.playerField.text = nil;
        return playerCell;
    }
    //Else set the Player name to the nameLabel text and return cell
    else {
        if(indexPath.row < [self.bowlrNames count]) {
            playerCell.textLabel.text = [self.bowlrNames objectAtIndex:indexPath.row];
            for(int i = 0; i < [self.selectedBowlrs count]; i++) {
                if([playerCell.textLabel.text isEqualToString: [self.selectedBowlrs objectAtIndex:i]]) {
                    playerCell.accessoryButton.hidden = NO;
                    playerCell.reorderButton.hidden = NO;
                }
            }
            return playerCell;
        }
        //Add Player textField to the last cell of the UITableView and return cell
        else {
            [playerCell addSubview:self.playerField];
            self.playerField.text = nil;
            return playerCell;
        }
    }
}
}

//Actions for selecting a row in the UITable
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

//If it is in the Alley section
if(indexPath.section == 0) {

    //If the selected cell is the same as the last selected cell
    if(self.lastIndexPathForAlleyCells && indexPath.row == self.lastIndexPathForAlleyCells.row) {
        [tableView beginUpdates];
        self.lastIndexPathForAlleyCells = nil;
        AlleyTableViewCell *previousCell = (AlleyTableViewCell *)[tableView cellForRowAtIndexPath:indexPath];
        //[tableView deselectRowAtIndexPath:[tableView indexPathForSelectedRow] animated:YES];
        previousCell.selected = NO;
        self.selectedAlley = nil;
        previousCell.accessoryButton.hidden = YES;
        [tableView endUpdates];
        return;
    }

    //Else the selected cell is not the last selected cell

    AlleyTableViewCell *previousCell = (AlleyTableViewCell *)[tableView cellForRowAtIndexPath:self.lastIndexPathForAlleyCells];
    previousCell.selected = NO;
    previousCell.accessoryButton.hidden = YES;
    AlleyTableViewCell *cell = (AlleyTableViewCell *)[tableView cellForRowAtIndexPath:indexPath];
    cell.selected = YES;
    cell.accessoryButton.hidden = NO;
    self.selectedAlley = cell.textLabel.text;

    self.lastIndexPathForAlleyCells = indexPath;
    [self.tableView reloadData];

}

else if(indexPath.section == 1) {
    PlayerTableViewCell *cell = (PlayerTableViewCell *)[tableView cellForRowAtIndexPath:indexPath];

    //If player is not already selected
    if([self playerIsSelected:cell.textLabel.text] == NO) {

        //Set selected to YES and reveal buttons
        cell.selected = YES;
        cell.accessoryButton.hidden = NO;
        cell.reorderButton.hidden = NO;

        //If 8 Players are currently selected, UIAlertView informs user they have reached the limit
        if([self.selectedBowlrs count] == 8) {
            NSString *message = @"You can only select up to 8 players";
            UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Max Players Selected" message:message delegate:self cancelButtonTitle:[self okButtonTitle] otherButtonTitles:nil, nil];
            alertView.tag = TAG_FULLGAME;
            [alertView show];
        }
        else {
            //Insert name into selectedBowlrs array
            [self.selectedBowlrs insertObject:cell.textLabel.text atIndex:0];

            //Reorder bowlrNames array
            NSString *bowlrName = [self.bowlrNames objectAtIndex:indexPath.row];
            [self.bowlrNames removeObjectAtIndex:indexPath.row];
            [self.bowlrNames insertObject:bowlrName atIndex:0];

            //Move selected row to top of section
            [self moveIndexPathToTop:indexPath];
        }
    }
    //Else the player is already selected
    else {

        //Set selected to NO and hide buttons
        cell.selected = NO;
        cell.accessoryButton.hidden = YES;
        cell.reorderButton.hidden = YES;

        [self.selectedBowlrs removeObject:cell.textLabel.text];
        [self.bowlrNames removeObject:cell.textLabel.text];
        [self.bowlrNames insertObject:cell.textLabel.text atIndex:[self.selectedBowlrs count]];

        [self moveIndexPathToMiddle:indexPath];

        for(int i = 0; i < [self.selectedBowlrs count]; i++) {
            NSLog(@"%@", [self.selectedBowlrs objectAtIndex:i]);
        }
    }
}
[self performSelector:@selector(reloadData) withObject:nil afterDelay:.25];
}

//Returns the number of rows for each section
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
switch (section) {
        //For Alley section
    case 0:
        //If the array is empty, return 1 row for the Alley Textfield
        if([self.allAlleys count] == 0)
            return 1;
        //Else return the number of elements in the array + 1 for the Alley Textfield
        else
            return [self.allAlleys count] + 1;
        break;
        //For Player section
    case 1:{
        //If the array is empty, return 1 row for the Player Textfield
        if([self.bowlrNames count] == 0)
            return 1;
        //Else return the number of elements in the array + 1 for the Player Textfield
        else
            return [self.bowlrNames count] + 1;
        break;
    }
    default:
        break;
}
return 0;
}

//Set up appearance for section headers
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {

UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.tableView.bounds.size.width, 25.0)];
UILabel *headerLabel = [[UILabel alloc] initWithFrame:CGRectZero];

CGFloat isRed = 84.0/255.0;
CGFloat isGreen = 84.0/255.0;
CGFloat isBlue = 84.0/255.0;

self.headerColor = [[UIColor alloc]initWithRed:isRed green:isGreen blue:isBlue alpha:0.5];


headerLabel.backgroundColor = self.headerColor;
headerLabel.opaque = NO;
headerLabel.textColor = self.textColor;
headerLabel.highlightedTextColor = [UIColor whiteColor];
headerLabel.font = [UIFont systemFontOfSize:18.0];
headerLabel.frame = CGRectMake(0.0, 0.0, self.tableView.bounds.size.width, 25.0);

if (section == 0) {
    [headerView setBackgroundColor:self.backgroundColor];
    headerLabel.text = @"Alley";
    [headerView addSubview:headerLabel];
}
else {
    [headerView setBackgroundColor:self.backgroundColor];
    headerLabel.text = @"Bowlr";
    [headerView addSubview:headerLabel];
}
return headerView;
}

-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {

return YES;
}

//Used to delete row of UITable
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {

self.indexPathForEditing = indexPath;

if(editingStyle == UITableViewCellEditingStyleDelete) {

    //For Alley section
    if(indexPath.section == 0) {

        //Set up UIAlertView
        NSString *message = @"Are you sure?";
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Delete Alley?" message:message delegate:self cancelButtonTitle:[self cancelButtonTitle] otherButtonTitles:[self deleteButtonTitle], nil];
        alertView.tag = TAG_Alley;
        [alertView show];


    }
    //For Player section
    else if(indexPath.section == 1) {

        //Set up UIAlertView
        NSString *message = @"All information for this Bowlr will be deleted";
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Delete Bowlr?" message:message delegate:self cancelButtonTitle:[self cancelButtonTitle] otherButtonTitles:[self deleteButtonTitle], nil];
        alertView.tag = TAG_Player;
        [alertView show];
    }
}
[self performSelector:@selector(reloadData) withObject:nil afterDelay:.25];
}

-（UITableViewCell*）tableView:（UITableView*）tableView cellForRowAtIndexPath:（NSIndexPath*）indexPath
{
NSString*uniqueIdentifierForPlayerCell=@“customPlayerCell”；
//初始化PlayerTableViewCell并设置其属性
PlayerTableViewCell*playerCell=nil；
playerCell=（PlayerTableViewCell*）[tableView dequeueReusableCellWithIdentifier:uniqueIdentifierForPlayerCell]；
如果（playerCell==nil）{
NSArray*topLevelObjects=[[NSBundle mainBundle]loadNibNamed:@“PlayerTableViewCell”所有者：nil选项：nil]；
用于（topLevelObjects中的id currentObject）{
if（[currentObject isKindOfClass:[PlayerTableViewCell类]]）{
playerCell=（PlayerTableViewCell*）当前对象；
打破
}
}
}
playerCell.textLabel.不透明=否；
playerCell.textLabel.textColor=self.textColor；
playerCell.textLabel.font=[UIFont systemFontOfSize:18.0]；
playerCell.textLabel.backgroundColor=[UIColor clearColor]；
playerCell.selectionStyle=UITableViewCellSelectionStyleNone；
playerCell.accessoryButton.hidden=是；
playerCell.reorderButton.hidden=是；
NSString*uniqueIdentifierForAlleyCell=@“customAlleyCell”；
//初始化AlleyTableViewcell并设置其属性
AlleyTableViewCell*alleyCell=nil；
alleyCell=（AlleyTableViewCell*）[tableView dequeueReusableCellWithIdentifier:uniqueIdentifierForAlleyCell]；
如果（alleyCell==nil）{
NSArray*topLevelObjects=[[NSBundle mainBundle]loadNibNamed:@“AlleyTableViewCell”所有者：nil选项：nil]；
用于（topLevelObjects中的id currentObject）{
if（[currentObject isKindOfClass:[AlleyTableViewCell类]]）{
alleyCell=（AlleyTableViewCell*）currentObject；
打破
}
}
}
alleyCell.textlab.不透明=否；
alleyCell.textlab.textColor=self.textColor；
alleyCell.textlab.font=[UIFont systemFontOfSize:18.0]；
alleyCell.textLabel.backgroundColor=[UIColor clearColor]；
alleyCell.selectionStyle=UITableViewCellSelectionStyleNone；
alleyCell.accessoryButton.hidden=是；
alleyCell.deleteButton.hidden=是；
//每个部分的备用背景色，其中第0部分为球道部分，第1部分为球员部分。将特定背景色的RGB值存储到特定单元格以备将来使用
if（indexPath.section==0&（indexPath.row%2==0））{
alleyCell.contentView.backgroundColor=self.backgroundColor；
alleyCell.isRed=95.0/255.0；
alleyCell.isGreen=94.0/255.0；
alleyCell.isBlue=94.0/255.0；
self.alleyField.backgroundColor=self.backgroundColor；
}
else if（indexPath.section==0&（indexPath.row%2==1））{
alleyCell.contentView.backgroundColor=self.alternateColor；
alleyCell.isRed=92.0/255.0；
alleyCell.isGreen=92.0/255.0；
alleyCell.isBlue=92.0/255.0；
self.alleyField.backgroundColor=self.alternateColor；
}
else if（indexPath.section==1&（indexPath.row%2==0））{
playerCell.contentView.backgroundColor=self.backgroundColor；
playerCell.isRed=95.0/255.0；
playerCell.isGreen=94.0/255.0；
playerCell.isBlue=94.0/255.0；
self.playerField.backgroundColor=self.backgroundColor；
}
else if（indexPath.section==1&（indexPath.row%2==1））{
playerCell.contentView.backgroundColor=self.alternateColor；
playerCell.isRed=92.0/255.0；
playerCell.isGreen=92.0/255.0；
playerCell.isBlue=92.0/255.0；
self.playerField.backgroundColor=self.alternateColor；
}
//如果Alley数组为空，则添加Alley文本字段和返回单元格
if（indexPath.section==0）{
如果（[self.allAlleys count]==0）{
[alleyCell addSubview:self.alleyField]；
self.alleyField.text=nil；
返回alleyCell；
}
//否则，将通道名称设置为nameLabel文本并返回单元格
否则{
if（indexath.row<[self.allAlleys count]）{
alleyCell.textlab.text=[self.allAlleys objectAtIndex:indexPath.row]；
if（[alleyCell.textLabel.text IsequalString:self.selectedAlley]）{
alleyCell.accessoryButton.hidden=否；
}
否则{
alleyCell.accessoryButton.hidden=是；
}
返回alleyCell；
}
//将alley TextField添加到UITableView的最后一个单元格并返回单元格
否则{
[alleyCell addSubview:self.alleyField]；
self.alleyField.text=nil；
返回alleyCell；
}
}
}
//如果播放器数组为空，则添加播放器文本字段和返回单元格
else if（indexPath.section==1）{
如果（[self.bowlNames count]==0）{
[playerCell addSubview:self.playerField]；
self.playerField.text=nil；
返回playerCell；
}
//否则将播放器名称设置为名称标签文本a