[英]change image of button in custom cell
我想更改自定義單元格上按鈕的圖像,給定代碼在雙擊時更改圖像。我想在單擊時更改圖像(選中和取消選中)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = @"SimpleTableCell";
SimpleTableCell *cell = (SimpleTableCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"SimpleTableCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
NSString *localArrayData = [LocalArray objectAtIndex:indexPath.row];
cell.nameLabel.text =localArrayData;
cell.CheckButton.tag=indexPath.row;
[cell.CheckButton setImage:[UIImage imageNamed:@"checkU.png"] forState:UIControlStateNormal];
[cell.CheckButton addTarget:self action:@selector(CheckButtonAction:)forControlEvents:UIControlEventTouchUpInside];
return cell;
}
- (void)CheckButtonAction:(id)sender
{
NSInteger row = [sender tag];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:0];
SimpleTableCell *cell = [DataTable cellForRowAtIndexPath:indexPath];
if(appDelegate.didSelect)
{
[cell.CheckButton setImage:[UIImage imageNamed:@"checkU.png"] forState:UIControlStateNormal];
appDelegate.didSelect = FALSE;
}
else
{
[cell.CheckButton setImage:[UIImage imageNamed:@"checkS.png"] forState:UIControlStateNormal];
appDelegate.didSelect = TRUE;
}
}
在 UIButton Action 里面寫這個
UIButton *btn = (UIButton *)sender;
if (btn.tag==0)
{
btn.tag = 1;
[btn setImage:[UIImage imageNamed:@"uncheck.png"] forState:UIControlStateNormal];
}
else
{
btn.tag=0;
[btn setImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
}
你需要做這樣的事情
-(void)selectUser:(id)sender
{
UIButton *button=(UIButton *) sender;
NSIndexPath *indexpath = [NSIndexPath indexPathForRow:button.tag inSection:0];
CustomTableViewCell *tappedCell = (CustomTableViewCell *)[yourTableView cellForRowAtIndexPath:indexpath];
if ([tappedCell.selectButton.imageView.image isEqual:[UIImage imageNamed:@"green.png"]])
{
[tappedCell.selectButton setImage:[UIImage imageNamed:@"grey.png"] forState:UIControlStateNormal];
}
else
{
[tappedCell.selectButton setImage:[UIImage imageNamed:@"green.png"] forState:UIControlStateNormal];
}
}
在cellForRowAtIndexPath
方法中,您將單元格的 indexPath 設置為按鈕標簽
cell.selectButton.tag=indexPath.row;
並將選擇器設置為按鈕
[cell.selectButton addTarget:self action:@selector(selectUser:) forControlEvents:UIControlEventTouchUpInside];
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