選中取消選中uitableview單元格中的按鈕

Question

我之前看過一些帖子，但沒有得到答案，這就是爲什麼我想以更有效的方式再次發帖。我如何在下圖中使用UITableView中的check-uncheck功能。

這是我想要的表格，當我點擊任何單元格的按鈕時，按鈕圖像將會改變，而不是所有的單元格。

Answer 1

做檢查，取消選中的功能僅buttonClicked:方法是不夠的。您還將cellForRowAtIndexPath:方法中的條件設置爲，其中或其中未選中，因爲cellForRowAtIndexPath:方法會每次調用時將滾動您的UITableView並更新單元格。 我看到你以前的問題，你添加兩個按鈕與兩個動作不是一個好方法，只需更改按鈕的圖像check-uncheck。

所以這是我這個做 - 在ViewController.m類現在

#import <UIKit/UIKit.h> 

@interface ViewController : UIViewController<UITableViewDelegate, UITableViewDataSource> 
{ 
    IBOutlet UITableView *tblView; 
    NSMutableArray *arrayCheckUnchek; // Will handle which button is selected or which is unselected 
    NSMutableArray *cellDataArray; // this is your data array 
} 

@end 

-

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
// Do any additional setup after loading the view, typically from a nib. 

    arrayCheckUnchek = [[NSMutableArray alloc]init]; 
    //Assign your cell data array 
    cellDataArray = [[NSMutableArray alloc]initWithObjects:@"cell-1",@"cell-2",@"cell-3",@"cell-4",@"cell-5", nil]; 

    // setting all unchecks initially 
    for(int i=0; i<[cellDataArray count]; i++) 
    { 
     [arrayCheckUnchek addObject:@"Uncheck"]; 
    } 

} 


-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ 
    return [cellDataArray count]; 
} 

-(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]; 
    } 

    cell.textLabel.text = [cellDataArray objectAtIndex:indexPath.row]; 

    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; 
    [button setFrame:CGRectMake(270.0, 7.0, 30.0, 30.0)]; 

    if([[arrayCheckUnchek objectAtIndex:indexPath.row] isEqualToString:@"Uncheck"]) 
    [button setImage:[UIImage imageNamed:@"uncheck_icon"] forState:UIControlStateNormal]; 
    else 
    [button setImage:[UIImage imageNamed:@"check_icon"] forState:UIControlStateNormal]; 

    [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside]; 
    [cell.contentView addSubview:button]; 

    return cell; 
} 

-(void)buttonClicked:(id)sender 
{ 
    //Getting the indexPath of cell of clicked button 

    CGPoint touchPoint = [sender convertPoint:CGPointZero toView:tblView]; 
    NSIndexPath *indexPath = [tblView indexPathForRowAtPoint:touchPoint]; 

    // No need to use tag sender will keep the reference of clicked button 
    UIButton *button = (UIButton *)sender; 

    //Checking the condition button is checked or unchecked. 
    //accordingly replace the array object and change the button image 
    if([[arrayCheckUnchek objectAtIndex:indexPath.row] isEqualToString:@"Uncheck"]) 
    { 
     [button setImage:[UIImage imageNamed:@"check_icon"] forState:UIControlStateNormal]; 
     [arrayCheckUnchek replaceObjectAtIndex:indexPath.row withObject:@"Check"]; 
    } 
    else 
    { 
     [button setImage:[UIImage imageNamed:@"uncheck_icon"] forState:UIControlStateNormal]; 
     [arrayCheckUnchek replaceObjectAtIndex:indexPath.row withObject:@"Uncheck"]; 
    } 
} 

最後它看起來就像 -

Answer 2

標籤與定製的UITableViewCell在IB設計非常有用。如果您以編程方式創建單元格，則不需要標籤。您只能使用它們來查找正確的uiview來設置屬性。

Answer 3

是的，這很容易設置標籤，同時在UITableViewCell中聲明類並使用標籤標識它們。我已經發布了一些示例代碼供您參考。我不確定它會解決你的問題。你問了如何設置標籤並使用標籤來識別這些類。所以它會給你一些關於你的問題的基本想法。

-(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]; 
     cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
     cell.selectionStyle = UITableViewCellSelectionStyleNone; 

     label1 = [[UIView alloc] initWithFrame:CGRectMake(2, 20, 15, 15)]; 
     label1.tag = 100; 
     label1.backgroundColor = [UIColor whiteColor]; 
     label1.layer.cornerRadius = 5; 
     [cell.contentView addSubview: label1]; 

     label2 = [[UILabel alloc] initWithFrame:CGRectMake(25, 2, 165, 23)]; 
     label2.tag = 101; 
     label2.font = [UIFont boldSystemFontOfSize:15]; 
     label2.backgroundColor = [UIColor clearColor]; 
     [cell.contentView addSubview: label2]; 

     label3 = [[UILabel alloc] initWithFrame:CGRectMake(190, 2, 90, 23)]; 
     label3.tag = 102; 
     label3.font = [UIFont systemFontOfSize:14]; 
     label3.textColor = [UIColor colorWithRed:0.14117670588235 green:0.435294117647059 blue:0.847058823529412 alpha:1]; 
     label3.backgroundColor = [UIColor clearColor]; 
     label3.textAlignment = UITextAlignmentRight; 
     [cell.contentView addSubview: label3]; 
    } 

    label1 = (UILabel *) [cell.contentView viewWithTag:100]; 
    NSString *string1 = [array1 objectAtIndex:indexPath.row]; 

    label2 = (UILabel *) [cell.contentView viewWithTag:101]; 
    NSString * string2 = [array2 objectAtIndex:indexPath.row]; 

    label3 = (UILabel *) [cell.contentView viewWithTag:102]; 
    NSString * string3 = [array3 objectAtIndex:indexPath.row]; 

    return cell; 
} 

請讓我知道這是否有用。否則，我們會採取其他方式。

快樂編碼。謝謝。

Answer 4

我同意@VakulSaini因爲ü可以做到這一點來處理這cell觸控或滑動或什麼都，這是一個特別吸引人的UITableView

-(void)handleSwipLeft:(UISwipeGestureRecognizer *)gestureRecognizer 
{ 
    CGPoint Location = [gestureRecognizer locationInView:self.tableView]; 
    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:Location]; 
    cell = [tableView cellForRowAtIndexPath:indexPath]; 
} 

Answer 5

使用cellForRowAtIndexPath方法和這種方法添加任何組件一樣（UITextField,UILabel .....等）在您的UITableViewCell通過使用[cell.contentView addSubview:YourComponentName];並給每個組件標籤由indexPath.row。

諸如此類,,,

YourComponentName.tag = indexPath.row;