如何使 UITableViewCell 显示为禁用?

发布于 2024-11-05 02:45:44 字数 360 浏览 1 评论 0原文

我知道 UITableview:如何禁用选择有些行,但不是其他行cell.selectionStyle = UITableViewCellSelectionStyleNone,但是如何使单元格(或任何UIView)显示为禁用(灰色-出)像下面这样?

禁用 UITableViewCell

I know about UITableview: How to Disable Selection for Some Rows but Not Others and cell.selectionStyle = UITableViewCellSelectionStyleNone, but how do I make a cell (or any UIView for that matter) appear disabled (grayed-out) like below?

disabled UITableViewCell

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评论(9

缱倦旧时光 2024-11-12 02:45:44

您只需禁用单元格的文本字段即可将其灰显:

Swift 4.x

cell!.isUserInteractionEnabled = false
cell!.textLabel!.isEnabled = false
cell!.detailTextLabel!.isEnabled = false

You can just disable the cell's text fields to gray them out:

Swift 4.x

cell!.isUserInteractionEnabled = false
cell!.textLabel!.isEnabled = false
cell!.detailTextLabel!.isEnabled = false
如果没有你 2024-11-12 02:45:44

一个在我使用它的环境中运行良好的 Swift 扩展;您的里程可能会有所不同。

Swift 2.x

extension UITableViewCell {
    func enable(on: Bool) {
        for view in contentView.subviews as! [UIView] {
            view.userInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Swift 3:

extension UITableViewCell {
    func enable(on: Bool) {
        for view in contentView.subviews {
            view.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

现在只需调用 myCell.enable(truthValue) 即可。

A Swift extension that works well in the context I'm using it; your mileage may vary.

Swift 2.x

extension UITableViewCell {
    func enable(on: Bool) {
        for view in contentView.subviews as! [UIView] {
            view.userInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Swift 3:

extension UITableViewCell {
    func enable(on: Bool) {
        for view in contentView.subviews {
            view.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Now it's just a matter of calling myCell.enable(truthValue).

轮廓§ 2024-11-12 02:45:44

感谢@Ajay Sharma,我弄清楚了如何使 UITableViewCell 出现禁用:

// Mac's native DigitalColor Meter reads exactly {R:143, G:143, B:143}.
cell.textLabel.alpha = 0.439216f; // (1 - alpha) * 255 = 143
aSwitch.enabled = NO; // or [(UISwitch *)cell.accessoryView setEnabled:NO];

然后,实际上禁用该单元格:

cell.userInteractionEnabled = NO;

Thanks to @Ajay Sharma, I figured out how to make a UITableViewCell appear disabled:

// Mac's native DigitalColor Meter reads exactly {R:143, G:143, B:143}.
cell.textLabel.alpha = 0.439216f; // (1 - alpha) * 255 = 143
aSwitch.enabled = NO; // or [(UISwitch *)cell.accessoryView setEnabled:NO];

And then, to actually disable the cell:

cell.userInteractionEnabled = NO;
盗梦空间 2024-11-12 02:45:44

尝试使用一个小技巧:

只需设置单元格的 alpha 值即可。把一些条件作为你自己的要求&设置阿尔法。

cell.alpha=0.2;

如果它不起作用,按照您喜欢的方式,使用第二个技巧,

只需拍摄具有灰色背景和透明背景的单元格大小的图像,只需将该图像添加到单元格内容上的图像中即可。
像这样:

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell...


    if(indexPath.row==0)
    {
        cell.userInteractionEnabled=FALSE;

        UIImageView *img=[[UIImageView alloc]init];
        img.frame=CGRectMake(0, 0, 320, 70);
        img.image=[UIImage imageNamed:@"DisableImage.png"];
        img.backgroundColor=[UIColor clearColor];
        [cell.contentView addSubview:img];
        [img release];

    }
    else {
        //Your usual code for cell interaction.

    }
    return cell;
}

虽然我不确定方法,但这肯定会满足你的要求。这会给用户一种错觉,认为该单元格已禁用。
请尝试使用此解决方案。希望能解决您的问题。

Try using a small trick:

Just set the alpha of the cell. Put some condition as your own requirements & set the alpha.

cell.alpha=0.2;

If it does't work,the way you like it to be then, Use second trick,

Just take an image of the cell size having gray background with Transparent Background, just add that image in image over the cell content.
Like this:

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell...


    if(indexPath.row==0)
    {
        cell.userInteractionEnabled=FALSE;

        UIImageView *img=[[UIImageView alloc]init];
        img.frame=CGRectMake(0, 0, 320, 70);
        img.image=[UIImage imageNamed:@"DisableImage.png"];
        img.backgroundColor=[UIColor clearColor];
        [cell.contentView addSubview:img];
        [img release];

    }
    else {
        //Your usual code for cell interaction.

    }
    return cell;
}

Although I am not not sure about the way,but this will surely fulfill your requirement.This will give a kind of illusion in user's mind that the cell is Disable.
Just try using this solution.Hope that will solve your problem.

今天小雨转甜 2024-11-12 02:45:44

Swift 4.X

来自 Kevin Owens 的不错的扩展,
我正在纠正细胞的行为。

extension UITableViewCell {
    func enable(on: Bool) {
        self.isUserInteractionEnabled = on
        for view in contentView.subviews {
            self.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

如何调用:-

cell.enable(on: switch.isOn)

Swift 4.X

Nice Extension from Kevin Owens,
I am correcting the behaviour of cell.

extension UITableViewCell {
    func enable(on: Bool) {
        self.isUserInteractionEnabled = on
        for view in contentView.subviews {
            self.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

How to call this:-

cell.enable(on: switch.isOn)

后知后觉 2024-11-12 02:45:44

来自 Kevin Owens 的出色扩展,这是我对使用 Swift 2.x 的更正:

extension UITableViewCell {
    func enable(on: Bool) {
        self.userInteractionEnabled = on
        for view in contentView.subviews {
            view.userInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Swift 3:

extension UITableViewCell {
    func enable(on: Bool) {
        self.isUserInteractionEnabled = on
        for view in contentView.subviews {
            view.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Great extension from Kevin Owens, this is my correction to working with Swift 2.x:

extension UITableViewCell {
    func enable(on: Bool) {
        self.userInteractionEnabled = on
        for view in contentView.subviews {
            view.userInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}

Swift 3:

extension UITableViewCell {
    func enable(on: Bool) {
        self.isUserInteractionEnabled = on
        for view in contentView.subviews {
            view.isUserInteractionEnabled = on
            view.alpha = on ? 1 : 0.5
        }
    }
}
随遇而安 2024-11-12 02:45:44

斯威夫特 5 版本

class CustomCell: UITableViewCell {
    
    private func isEnabled(_ enabled: Bool) {
        isUserInteractionEnabled = enabled
        subviews.forEach { subview in
            subview.isUserInteractionEnabled = enabled
            subview.alpha = enabled ? 1 : 0.5
        }
    }
    
}
    

Swift 5 version

class CustomCell: UITableViewCell {
    
    private func isEnabled(_ enabled: Bool) {
        isUserInteractionEnabled = enabled
        subviews.forEach { subview in
            subview.isUserInteractionEnabled = enabled
            subview.alpha = enabled ? 1 : 0.5
        }
    }
    
}
    
酒中人 2024-11-12 02:45:44

我创建了以下扩展来启用/禁用 UITableViewCell,使用它非常方便。
使用“UITableViewCell+Ext.h”创建 UITableViewCell 扩展,其中包含以下内容。

@interface UITableViewCell (Ext)

- (void)enableCell:(BOOL)enabled withText:(BOOL)text;
- (void)enableCell:(BOOL)enabled withText:(BOOL)text withDisclosureIndicator:(BOOL)disclosureIndicator;
- (void)disclosureIndicator:(BOOL)disclosureIndicator;

@end

“UITableViewCell+Ext.m”包含以下内容。

@implementation UITableViewCell (Ext)

- (UITableView *)uiTableView {
    if ([[UIDevice currentDevice] systemVersionIsGreaterThanOrEqualTo:@"7.0"]) {
        return (UITableView *)self.superview.superview;
    }
    else {
        return (UITableView *)self.superview;
    }
}

- (void)enableCell:(BOOL)enabled withText:(BOOL)text {
    if (enabled) {
        self.userInteractionEnabled = YES;

        if (text) {
            self.textLabel.alpha = 1.0f;
            self.alpha = 1.0f;
            self.detailTextLabel.hidden = NO;
        }
    }
    else {
        self.userInteractionEnabled = NO;

        if (text) {
            self.textLabel.alpha = 0.5f;
            self.alpha = 0.5f;
            self.detailTextLabel.hidden = YES;
        }
    }
}

- (void)enableCell:(BOOL)enabled withText:(BOOL)text withDisclosureIndicator:(BOOL)disclosureIndicator {
    if (enabled) {
        self.userInteractionEnabled = YES;

        if (text) {
            self.textLabel.alpha = 1.0f;
            self.alpha = 1.0f;
            self.detailTextLabel.hidden = NO;
        }

        self.accessoryType = disclosureIndicator ? UITableViewCellAccessoryDisclosureIndicator : UITableViewCellAccessoryNone;
    }
    else {
        self.userInteractionEnabled = NO;

        if (text) {
            self.textLabel.alpha = 0.5f;
            self.alpha = 0.5f;
            self.detailTextLabel.hidden = YES;
        }

        self.accessoryType = UITableViewCellAccessoryNone;
    }
}

- (void)disclosureIndicator:(BOOL)disclosureIndicator {
    if (disclosureIndicator) {
        self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }
    else {
        self.accessoryType = UITableViewCellAccessoryNone;
    }
}

@end

如何禁用单元格: >

[cell enableCell:NO withText:NO];

[cell enableCell:NO withText:YES withDisclosureIndicator:YES];

如何启用单元:

[cell enableCell:YES withText:NO];

[cell enableCell:YES withText:YES withDisclosureIndicator:YES];

希望对您有所帮助。

I have created following extension to Enable/Disable UITableViewCell, it is very convenient to use it.
Create UITableViewCell Extension with "UITableViewCell+Ext.h" contain following in it.

@interface UITableViewCell (Ext)

- (void)enableCell:(BOOL)enabled withText:(BOOL)text;
- (void)enableCell:(BOOL)enabled withText:(BOOL)text withDisclosureIndicator:(BOOL)disclosureIndicator;
- (void)disclosureIndicator:(BOOL)disclosureIndicator;

@end

"UITableViewCell+Ext.m" contain following in it.

@implementation UITableViewCell (Ext)

- (UITableView *)uiTableView {
    if ([[UIDevice currentDevice] systemVersionIsGreaterThanOrEqualTo:@"7.0"]) {
        return (UITableView *)self.superview.superview;
    }
    else {
        return (UITableView *)self.superview;
    }
}

- (void)enableCell:(BOOL)enabled withText:(BOOL)text {
    if (enabled) {
        self.userInteractionEnabled = YES;

        if (text) {
            self.textLabel.alpha = 1.0f;
            self.alpha = 1.0f;
            self.detailTextLabel.hidden = NO;
        }
    }
    else {
        self.userInteractionEnabled = NO;

        if (text) {
            self.textLabel.alpha = 0.5f;
            self.alpha = 0.5f;
            self.detailTextLabel.hidden = YES;
        }
    }
}

- (void)enableCell:(BOOL)enabled withText:(BOOL)text withDisclosureIndicator:(BOOL)disclosureIndicator {
    if (enabled) {
        self.userInteractionEnabled = YES;

        if (text) {
            self.textLabel.alpha = 1.0f;
            self.alpha = 1.0f;
            self.detailTextLabel.hidden = NO;
        }

        self.accessoryType = disclosureIndicator ? UITableViewCellAccessoryDisclosureIndicator : UITableViewCellAccessoryNone;
    }
    else {
        self.userInteractionEnabled = NO;

        if (text) {
            self.textLabel.alpha = 0.5f;
            self.alpha = 0.5f;
            self.detailTextLabel.hidden = YES;
        }

        self.accessoryType = UITableViewCellAccessoryNone;
    }
}

- (void)disclosureIndicator:(BOOL)disclosureIndicator {
    if (disclosureIndicator) {
        self.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }
    else {
        self.accessoryType = UITableViewCellAccessoryNone;
    }
}

@end

How to Disable Cell:

[cell enableCell:NO withText:NO];

[cell enableCell:NO withText:YES withDisclosureIndicator:YES];

How to Enable Cell:

[cell enableCell:YES withText:NO];

[cell enableCell:YES withText:YES withDisclosureIndicator:YES];

Hope it helps you.

时光病人 2024-11-12 02:45:44

为了迅速

cell.isUserInteractionEnabled = false

for swift

cell.isUserInteractionEnabled = false
~没有更多了~
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