iPhone UITableView - 删除按钮

Question

我正在使用'滑动删除'功能UITableView.

问题是我使用的UITableViewCell是基于每个项目创建的自定义

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

我需要改变删除按钮的位置(只需将其向左移动10px左右),我该怎么做呢？

这是我现有的创建单元格的代码:

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"cellForRowAtIndexPath");
#if USE_CUSTOM_DRAWING
    const NSInteger TOP_LABEL_TAG = 1001;
    const NSInteger BOTTOM_LABEL_TAG = 1002;
    UILabel *topLabel;
    UILabel *bottomLabel;
#endif

    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
    {
        //
        // Create the cell.
        //
        cell =
        [[[UITableViewCell alloc]
          initWithFrame:CGRectZero
          reuseIdentifier:CellIdentifier]
         autorelease];

#if USE_CUSTOM_DRAWING


        const CGFloat LABEL_HEIGHT = 20;
        UIImage *image = [UIImage imageNamed:@"trans_clock.png"];

        //
        // Create the label for the top row of text
        //
        topLabel =
        [[[UILabel alloc]
          initWithFrame:
          CGRectMake(
                     image.size.width + 2.0 * cell.indentationWidth,
                     0.5 * (aTableView.rowHeight - 2 * LABEL_HEIGHT),
                     aTableView.bounds.size.width -
                     image.size.width - 4.0 * cell.indentationWidth
                     ,
                     LABEL_HEIGHT)]
         autorelease];
        [cell.contentView addSubview:topLabel];

        //
        // Configure the properties for the text that are the same on every row
        //
        topLabel.tag = TOP_LABEL_TAG;
        topLabel.backgroundColor = [UIColor clearColor];
        topLabel.textColor = fontColor;
        topLabel.highlightedTextColor = [UIColor colorWithRed:1.0 green:1.0 blue:0.9 alpha:1.0];
        topLabel.font = [UIFont systemFontOfSize:[UIFont labelFontSize]];

        //
        // Create the label for the top row of text
        //
        bottomLabel =
        [[[UILabel alloc]
          initWithFrame:
          CGRectMake(
                     image.size.width + 2.0 * cell.indentationWidth,
                     0.5 * (aTableView.rowHeight - 2 * LABEL_HEIGHT) + LABEL_HEIGHT,
                     aTableView.bounds.size.width -
                     image.size.width - 4.0 * cell.indentationWidth
                     ,
                     LABEL_HEIGHT)]
         autorelease];
        [cell.contentView addSubview:bottomLabel];

        //
        // Configure the properties for the text that are the same on every row
        //
        bottomLabel.tag = BOTTOM_LABEL_TAG;
        bottomLabel.backgroundColor = [UIColor clearColor];
        bottomLabel.textColor = fontColor;
        bottomLabel.highlightedTextColor = [UIColor colorWithRed:1.0 green:1.0 blue:0.9 alpha:1.0];
        bottomLabel.font = [UIFont systemFontOfSize:[UIFont labelFontSize] - 2];

        //
        // Create a background image view.
        //
        cell.backgroundView =
        [[[UIImageView alloc] init] autorelease];
        cell.selectedBackgroundView =
        [[[UIImageView alloc] init] autorelease];
#endif
    }

#if USE_CUSTOM_DRAWING
    else
    {
        topLabel = (UILabel *)[cell viewWithTag:TOP_LABEL_TAG];
        bottomLabel = (UILabel *)[cell viewWithTag:BOTTOM_LABEL_TAG];
    }
    topLabel.text  = @"Example Text";
    topLabel.textColor = fontColor;

    bottomLabel.text = @"More Example Text";
    bottomLabel.textColor = fontColor;

    //
    // Set the background and selected background images for the text.
    // Since we will round the corners at the top and bottom of sections, we
    // need to conditionally choose the images based on the row index and the
    // number of rows in the section.
    //
    UIImage *rowBackground;
    UIImage *selectionBackground;
    NSInteger sectionRows = [aTableView numberOfRowsInSection:[indexPath section]];
    NSInteger row = [indexPath row];
    if (row == 0 && row == sectionRows - 1)
    {
        rowBackground = [UIImage imageNamed:@"topAndBottomRow.png"];
        selectionBackground = [UIImage imageNamed:@"topAndBottomRowSelected.png"];
    }
    else if (row == 0)
    {
        rowBackground = [UIImage imageNamed:@"topRow.png"];
        selectionBackground = [UIImage imageNamed:@"topRowSelected.png"];
    }
    else if (row == sectionRows - 1)
    {
        rowBackground = [UIImage imageNamed:@"bottomRow.png"];
        selectionBackground = [UIImage imageNamed:@"bottomRowSelected.png"];
    }
    else
    {
        rowBackground = [UIImage imageNamed:@"middleRow.png"];
        selectionBackground = [UIImage imageNamed:@"middleRowSelected.png"];
    }
    ((UIImageView *)cell.backgroundView).image = rowBackground;
    ((UIImageView *)cell.selectedBackgroundView).image = selectionBackground;

    cell.imageView.image = [UIImage imageNamed:@"Example_Image.png"];
#else
    cell.text = @"Example";
#endif
    return cell;
}

Answer 1

对我来说,最好的办法来解决这个被覆盖-(void)layoutSubviews在MyCell:UITableViewCell

在这里,您不仅可以看到"删除"按钮的自定义位置,还可以查看" 编辑"模式的"编辑"和"重新排序"控件

- (void)layoutSubviews
{
    [super layoutSubviews];

    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationDuration:0.0f];

    for (UIView *subview in self.subviews) {


        if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationControl"]) { 
            CGRect newFrame = subview.frame;
            newFrame.origin.x = 200;
            subview.frame = newFrame;
        }
        else if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellEditControl"]) {             
            CGRect newFrame = subview.frame;
            newFrame.origin.x = 100;
            subview.frame = newFrame;
        }
        else if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellReorderControl"]) {             
            CGRect newFrame = subview.frame;
            newFrame.origin.x = 200;
            subview.frame = newFrame;
        }
    }
    [UIView commitAnimations];
}

Answer 2

Iwat的代码对我不起作用.但这很有效.

- (void)willTransitionToState:(UITableViewCellStateMask)state {

    [super willTransitionToState:state];

    if ((state & UITableViewCellStateShowingDeleteConfirmationMask) == UITableViewCellStateShowingDeleteConfirmationMask) {

        for (UIView *subview in self.subviews) {

            if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationControl"]) {             

                subview.hidden = YES;
                subview.alpha = 0.0;
            }
        }
    }
}

- (void)didTransitionToState:(UITableViewCellStateMask)state {

    [super didTransitionToState:state];

    if (state == UITableViewCellStateShowingDeleteConfirmationMask || state == UITableViewCellStateDefaultMask) {
        for (UIView *subview in self.subviews) {

            if ([NSStringFromClass([subview class]) isEqualToString:@"UITableViewCellDeleteConfirmationControl"]) {

                UIView *deleteButtonView = (UIView *)[subview.subviews objectAtIndex:0];
                CGRect f = deleteButtonView.frame;
                f.origin.x -= 20;
                deleteButtonView.frame = f;

                subview.hidden = NO;

                [UIView beginAnimations:@"anim" context:nil];
                subview.alpha = 1.0;
                [UIView commitAnimations];
            }
        }
    }
}