ios - uitableview:在同一行中，选定的按钮应自动选中，其余按钮应自动取消选中

Question

我正在使用 UITableview 进行反馈表单，因为它使用自定义复选框进行选择。在 UITableviewcell 中，我为选项放置了四个静态按钮，例如 非常
不错 , 不错 , 平均 , 低于平均水平 .

我想要的是，我只想选择一个连续选中的按钮，如果我选择另一个自动选中的按钮，则应该取消选中前一个选中的按钮。

示例:在同一行假设如果我选择 很好首先我选择了平均 , 之前选择的 很好应该取消选中。

检查下面的我的代码以供引用:

这是在 cellforrowatindexpath

[cell.R1_BTN setImage:[UIImage imageNamed:@"Touch_G.png"] forState:UIControlStateNormal];
[cell.R1_BTN addTarget:self action:@selector(BtnClicked:) forControlEvents:UIControlEventTouchUpInside]; 
cell.R1_BTN.tag=1;

点击这里的事件..

-(void)BtnClicked:(id)sender
{
//Need Code Here..
}

更新代码供引用..

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
   return [GNM count];
}

-(UITableViewCell *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
   return  [GNM objectAtIndex:section];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
   if ([[NM objectAtIndex:section] isKindOfClass:[NSArray class]])
   {
     return [[NM objectAtIndex:section] count];
   }
   else
   {
     return 1;
   }

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
 FeedBackFormTVC *cell = [FeedBack_TV dequeueReusableCellWithIdentifier:@"ListCell" forIndexPath:indexPath];

cell.FBName_LBL.text = [[NM objectAtIndex:indexPath.section] isKindOfClass:[NSArray class]]
? [[NM objectAtIndex:indexPath.section] objectAtIndex:indexPath.row]
: [NM objectAtIndex:indexPath.section];

// below for assigning code action event..
....
....
...

}

我尝试使用标签，但我没有得到我想要的，请帮助我.. 在此先感谢。

Answer 1

我认为你应该使用模型来设置 UITableViewCell。您的模型的 .h 文件如下:

#import <Foundation/Foundation.h>

typedef enum : NSInteger {
    UNKNOWN = 0,
    VERY_GOOD = 1,
    GOOD = 2,
    AVERAGE = 3,
    BELOW_AVERAGE = 4
}RangeMark;

@interface CellModel : NSObject

@property(nonatomic, assign)    RangeMark range;

@end

.m 文件，如:

#import "CellModel.h"

@implementation CellModel

@end

比你应该用 .xib 文件初始化一个表格单元格看起来像:


及其 .h 文件，如:

#import <UIKit/UIKit.h>
#import "CellModel.h"

@interface TableViewCell : UITableViewCell

@property (weak, nonatomic) IBOutlet UIButton *veryGoodButton;
@property (weak, nonatomic) IBOutlet UIButton *goodButton;
@property (weak, nonatomic) IBOutlet UIButton *averageButton;
@property (weak, nonatomic) IBOutlet UIButton *belowAverageButton;

- (void)setupCellWithModel:(CellModel*)model;

@end

它的 .m 文件如下:

#import "TableViewCell.h"

@implementation TableViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

- (void)setupCellWithModel:(CellModel *)model {

    if(model.range == VERY_GOOD) {
        self.veryGoodButton.backgroundColor = [UIColor greenColor];
    }
    else if(model.range == GOOD) {
        self.goodButton.backgroundColor = [UIColor blueColor];
    }
    else if(model.range == AVERAGE) {
        self.averageButton.backgroundColor = [UIColor yellowColor];
    }
    else if(model.range == BELOW_AVERAGE) {
        self.belowAverageButton.backgroundColor = [UIColor redColor];
    }
}

- (void)prepareForReuse {
    [super prepareForReuse];
    self.veryGoodButton.backgroundColor = [UIColor lightGrayColor];
    self.goodButton.backgroundColor = [UIColor lightGrayColor];
    self.averageButton.backgroundColor = [UIColor lightGrayColor];
    self.belowAverageButton.backgroundColor = [UIColor lightGrayColor];
}

@end

最后，您的 View Controller .h 文件应如下所示:

#import <UIKit/UIKit.h>
#import "TableViewCell.h"

@interface ViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITableView *tableView;

@end

和 .m 文件应如下所示:

#import "ViewController.h"

@interface ViewController () <UITableViewDelegate, UITableViewDataSource>{
    NSMutableArray<CellModel*> *modelList;
}

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.tableView.estimatedRowHeight = 600;
    self.tableView.rowHeight = UITableViewAutomaticDimension;

    modelList = [NSMutableArray<CellModel*> new];

    for (int i=0; i<50; i++) {
        CellModel *cellModel = [[CellModel alloc] init];
        cellModel.range = UNKNOWN;
        [modelList addObject:cellModel];
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

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

    TableViewCell *cell = (TableViewCell*)[tableView dequeueReusableCellWithIdentifier:@"TableViewCell"];
    if (cell == nil)
    {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"TableViewCell" owner:self options:nil];
        cell = [nib objectAtIndex:0];
    }

    [cell setupCellWithModel:[modelList objectAtIndex:indexPath.row]];

    cell.veryGoodButton.tag = indexPath.row;
    cell.goodButton.tag = indexPath.row;
    cell.averageButton.tag = indexPath.row;
    cell.belowAverageButton.tag = indexPath.row;

    [cell.veryGoodButton addTarget:self action:@selector(veryGood:) forControlEvents:UIControlEventTouchUpInside];

    [cell.goodButton addTarget:self action:@selector(good:) forControlEvents:UIControlEventTouchUpInside];

    [cell.averageButton addTarget:self action:@selector(average:) forControlEvents:UIControlEventTouchUpInside];

    [cell.belowAverageButton addTarget:self action:@selector(belowAverage:) forControlEvents:UIControlEventTouchUpInside];

    return cell;

    return nil;
}

- (NSInteger)tableView:(nonnull UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return modelList.count;
}

- (void) veryGood:(UIButton*)sender {
    [modelList objectAtIndex: sender.tag].range = VERY_GOOD;
    [self setCellDynamicly:[NSIndexPath indexPathForRow:sender.tag inSection:0] withCellModel:[modelList objectAtIndex: sender.tag]];
}

- (void) good:(UIButton*)sender {
    [modelList objectAtIndex: sender.tag].range = GOOD;
    [self setCellDynamicly:[NSIndexPath indexPathForRow:sender.tag inSection:0] withCellModel:[modelList objectAtIndex: sender.tag]];
}

- (void) average:(UIButton*)sender {
    [modelList objectAtIndex: sender.tag].range = AVERAGE;
    [self setCellDynamicly:[NSIndexPath indexPathForRow:sender.tag inSection:0] withCellModel:[modelList objectAtIndex: sender.tag]];
}

- (void) belowAverage:(UIButton*)sender {
    [modelList objectAtIndex: sender.tag].range = BELOW_AVERAGE;
    [self setCellDynamicly:[NSIndexPath indexPathForRow:sender.tag inSection:0] withCellModel:[modelList objectAtIndex: sender.tag]];
}

- (void)setCellDynamicly:(NSIndexPath*)indexPath withCellModel:(CellModel*)cellModel {
    TableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
    [cell prepareForReuse];
    [cell setupCellWithModel:cellModel];
}

@end

就这样 :)

最后应用程序看起来像: