如何使UITableViewCell显示为禁用状态？

我知道和

cell.selectionStyle=UITableViewCellSelectionStyleNone

，但如何使单元格（或任何

UIView

）显示为禁用（灰显），如下所示

---

尝试使用一个小技巧：

只需设置单元格的alpha值。根据您自己的要求设置一些条件并设置alpha

cell.alpha=0.2;

如果它不起作用，按照你喜欢的方式，使用第二个技巧

只需拍摄一张具有灰色背景和透明背景的单元格大小图像，只需将该图像添加到单元格内容的图像中即可。 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;
}

虽然我不确定该怎么做，但这肯定会满足您的要求。这会在用户的脑海中产生一种错觉，即该单元是禁用的。

---

请尝试使用此解决方案。希望这能解决您的问题。

多亏了@Ajay Sharma，我想出了如何使

UITableViewCell

显示为禁用状态：

// 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，要实际禁用该单元：

cell.userInteractionEnabled = NO;

---

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

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

---

我创建了以下扩展来启用/禁用UITableViewCell，使用起来非常方便。 创建带有“UITableViewCell+Ext.h”的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

@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

“UITableViewCell+Ext.m”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

@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];

[cell enableCell:YES withText:NO];

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

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

如何启用单元格：

[cell enableCell:NO withText:NO];

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

[cell enableCell:YES withText:NO];

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

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

---

希望它能对您有所帮助。

这是一个快速扩展，在我使用它的环境中运行良好；您的里程可能会有所不同

Swift 2.x

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

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

Swift 3:

[cell enableCell:NO withText:NO];

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

[cell enableCell:YES withText:NO];

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

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）

凯文·欧文斯的伟大扩展，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：

---

Swift 4.X

凯文·欧文斯的精彩续集， 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
        }
    }
}

如何称呼它：-

cell.enable（打开：switch.isOn）

用于swift

cell.isUserInteractionEnabled = false

---

当然可以，您也可以这样做，通过设置alpha:）或稍短一点：

cell.userInteractionEnabled=cell.textlab.enabled=cell.detailtextlab.enabled=NO较短，但ugglier thoughcell.alpha=0.2-不适合我。cell.ContentView.Alpha=0.2适用于我这里设置cell.Alpha-不起作用，设置cell.ContentView.Alpha会执行作业使用。在Swift 3.0中，isUserInteractionEnabled这不会影响单元格的外观。