tableViewController on button click

Question

我有一個tableViewController，單元格包含一個按鈕和一個標籤。當用戶點擊按鈕時，我需要獲取單元格的文本（實際上是單元格Person的對象）。

當用戶點擊按鈕時，會執行以下方法;

-(void) buttonOfCellClicked{ 
     // here i need to access the `Person` object that the user clicked 
} 

如何編寫此代碼？

編輯：

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

人*人= [personsArr objectAtIndex：indexPath.row];

static NSString *CellIdentifier = @"Cell"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] ; 

label = [[UILabel alloc]initWithFrame:CGRectMake(15, 5, 75, 60)]; 
label.text =person.firstName; 
[cell addSubview:label]; 
UIButton *button= [UIButton buttonWithType:UIButtonTypeRoundedRect]; 

[button addTarget:self action:@selector(buttonOfCellClicked) forControlEvents:UIControlEventTouchUpInside]; 

[cell.contentView addSubview:button]; 


} 

Answer 1

我會繼承UITableviewCell並添加一個屬性和動作到該類，並在IB連接按鈕。當您配置單元格時，只需設置人員對象。這種方法在很大程度上取決於您計劃如何處理該對象。

Answer 2

你需要問你的按鈕來告訴你它在哪裏。要做到這一點，你需要調用superview兩次（1X將返回cell.contentView，2X將返回小區）：

- (void)buttonOfCellClicked:(UIButton *)sender { 
    UITabvleViewCell *cell = (UITableViewCell *)[[sender superview] superview]; 
} 

然後你就可以訪問例如細胞的特性cell.textLabel.text

---

編輯：您還需要在cellForRow後buttonOfCellClicked文本添加:您-addTarget:action:forControlEvents:：

[button addTarget:self action:@selector(buttonOfCellClicked:) forControlEvents:UIControlEventTouchUpInside] 

---

EDIT2：您可以通過

NSIndexPath *ip = [yourTableView indexPathForCell:cell]; 
Person *p = [personArr objectAtIndex:ip.row]; 

Answer 3

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

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

static NSString *CellIdentifier = @"Cell"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] ; 

UIButton *button= [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
[button setTag:indexPath.row]; // SET TAG TO YOUR BUTTON, IT WILL BE SAME AS YOUR OBJECT AT INDEX OF ARRAY 
[button addTarget:self action:@selector(buttonOfCellClicked:) forControlEvents:UIControlEventTouchUpInside]; 

[cell.contentView addSubview:button]; 


} 

-(void) buttonOfCellClicked:(id) sender{ 
    Person *person = [yourArray objectAtIndex:[sender tag]]; 
     // here i need to access the `Person` object that the user clicked 
} 

訪問的人

Answer 4

id findAncestor(UIView *view, Class class) { 
    while (view && ![view isKindOfClass:class]) 
     view = [view superview]; 
    return view; 
} 

- (void)buttonOfCellClicked:(UIButton *)button 
{ 
    UITableViewCell *cell = (UITableViewCell *)findAncestor(button, [UITableViewCell class]); 
    UITableView *table = (UITableView *)findAncestor(cell, [UITableView class]); 
    NSIndexPath *path = [table indexPathForCell:cell]; 
    if (!path) 
     return; 
    Person *person = [personsArr objectAtIndex:path.row]; 
    // do whatever with person 
}