1
我在UITableView
的每個單元中都有UIButton
。當我觸摸它時,其狀態設置爲選中狀態。但是,當我滾動表視圖,使按鈕不可見時,狀態設置爲正常。我怎麼能這樣做,UIButton
仍然選擇?UITableView中的UIButton的選定狀態
謝謝。
編輯:這裏是cellForRowAtIndexPath
代碼:某處
- (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.selectionStyle = UITableViewCellSelectionStyleNone;
if (indexPath.row < [messagesArray count]) {
Zprava *msgObj = [messagesArray objectAtIndex:indexPath.row];
int width = 0;
if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait) {
width = 320;
} else {
width = 480;
}
CGSize boundingSize = CGSizeMake(width, CGFLOAT_MAX);
CGSize requiredSize = [msgObj.mmessage sizeWithFont:[UIFont systemFontOfSize:17] constrainedToSize:boundingSize lineBreakMode:UILineBreakModeWordWrap];
UIButton *background = [[UIButton alloc] initWithFrame:CGRectMake(10, 25, 300, requiredSize.height + 20)];
[background setBackgroundImage:[[UIImage imageNamed:@"balloon.png"] stretchableImageWithLeftCapWidth:15 topCapHeight:15] forState:UIControlStateNormal];
[background setBackgroundImage:[[UIImage imageNamed:@"selected-balloon.png"] stretchableImageWithLeftCapWidth:15 topCapHeight:15] forState:UIControlStateSelected];
[background addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
background.tag = msgObj.msgID;
[[cell contentView] addSubview:background];
[background release];
UILabel *dateLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 285, 15)];
[dateLabel setFont:[UIFont systemFontOfSize:12]];
[dateLabel setLineBreakMode:UILineBreakModeWordWrap];
[dateLabel setTextColor:[UIColor lightGrayColor]];
[dateLabel setNumberOfLines:0];
[dateLabel setTextAlignment:UITextAlignmentRight];
[dateLabel setText:msgObj.mdate];
[dateLabel setBackgroundColor:[UIColor clearColor]];
[dateLabel setOpaque:NO];
[[cell contentView] addSubview:dateLabel];
[dateLabel release];
UILabel *messageLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 30, 275, requiredSize.height + 5)];
[messageLabel setFont:[UIFont systemFontOfSize:17]];
[messageLabel setLineBreakMode:UILineBreakModeWordWrap];
[messageLabel setTextColor:[UIColor blackColor]];
[messageLabel setNumberOfLines:0];
[messageLabel setText:msgObj.mmessage];
[messageLabel setBackgroundColor:[UIColor clearColor]];
[messageLabel setOpaque:NO];
[[cell contentView] addSubview:messageLabel];
[messageLabel release];
}
return cell;
}
謝謝您的回覆。但你能告訴我,如何檢測UIButton的狀態已被改變? – 2010-08-09 14:25:18
當用戶點擊按鈕時,按鈕狀態會改變,不是嗎?所以你應該這樣做,在水龍頭處理器 – Vladimir 2010-08-09 14:31:30
不,我認爲當狀態從選中改爲正常。 – 2010-08-09 14:34:30