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對於表格視圖單元格中的每個條目,我需要一個按鈕在右邊,然後是一些文本,再按一下左邊的按鈕。在按鈕點擊事件時,我需要更改文本(點擊左/右按鈕),並根據文本條件刪除任一按鈕。我無法使用cellForRowAtIndexPath方法刪除按鈕。我試着繼承UITableViewCell並使用方法-prepareForReuse,但我無法重置單元格。任何想法我怎麼做到這一點?或者有什麼辦法讓這個按鈕不可見或可能隱藏?UITableViewCell沒有得到更新
NSString *CellIdentifier = [[NSString alloc] initWithFormat:@"Cell%d",indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
[self.tableView clearsContextBeforeDrawing];
NSString *str = [listOfItems objectAtIndex:indexPath.row];
cell.text = [listOfItems objectAtIndex:indexPath.row];
cell.textColor = [UIColor blueColor];
cell.font = [UIFont systemFontOfSize:14];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIImage *image = [UIImage imageNamed:@"Arrow_Right.png"];
CGRect frame = CGRectMake(290, 5, image.size.width, image.size.height);
button.frame = frame;
[button setBackgroundImage:image forState:UIControlStateNormal];
button.backgroundColor = [UIColor clearColor];
[button addTarget:self action:@selector(rightArrow_clicked:) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:button];
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
UIImage *img = [UIImage imageNamed:@"Arrow_Left.png"];
CGRect frame1 = CGRectMake(5, 5, img.size.width, img.size.height);
button1.frame = frame1;
[button1 setBackgroundImage:img forState:UIControlStateNormal];
button1.backgroundColor = [UIColor clearColor];
[button1 addTarget:self action:@selector(leftArrow_clicked:) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:button1];
if([str isEqual:@" abc "])
[button setEnabled:NO];
if([str isEqual:@" pqr "])
[button1 setEnabled:NO];
是的,它是可重複使用的單元格。如何在-prepareForReuse方法中重置它? – Neo 2009-04-13 13:06:51