这个使用uilabel自调节高度发现的问题，代码如下：
//content label
NSString *contentValue = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).content;
CGFloat width = 0.0f;
CGSize orignalSize;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer]){
orignalSize = [contentValue sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20.0f]}];
width = orignalSize.width;
}else{
width = [contentValue sizeWithFont:[UIFont systemFontOfSize:20.0f ]].width;
}
#pragma clang diagnostic pop
//set the most large width
if (width > cell.frame.size.width - 90.0f) {
width = cell.frame.size.width - 90.0f;
}
UILabel *content = [[UILabel alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
self.messageContentLabel = content;
self.messageContentLabel.font = [UIFont systemFontOfSize:20.0];
self.messageContentLabel.backgroundColor = [UIColor clearColor];
self.messageContentLabel.numberOfLines = 0;
self.messageContentLabel.adjustsFontSizeToFitWidth = YES;
self.messageContentLabel.lineBreakMode = NSLineBreakByWordWrapping;
self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
CGRect labelFrameContent = self.messageContentLabel.frame;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer]) {
NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.messageContentLabel.font forKey: NSFontAttributeName];
labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
attributes:stringAttributes context:nil].size;
}else{
labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font
constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
lineBreakMode:self.messageContentLabel.lineBreakMode];
}
#pragma clang diagnostic pop
//adjust the height
if (labelFrameContent.size.height < 50.0f) {
labelFrameContent.size.height = 50.0f;
}
labelFrameContent.size.width += 10.0f;
if (labelFrameContent.size.width > cell.frame.size.width - 90.0f) {
labelFrameContent.size.width = cell.frame.size.width - 90.0f;
}
labelFrameContent.origin.x = 70.0f;
labelFrameContent.origin.y = self.cellDateLabel.frame.size.height + 10.0f;
self.messageContentLabel.frame = labelFrameContent;
[cell.contentView addSubview:self.messageContentLabel];
解决方法是使用uitextview来替换即可
UITextView *content = [[UITextView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
self.messageContentLabel = content;
[content release];
self.messageContentLabel.font = [UIFont systemFontOfSize:16.0f];
self.messageContentLabel.backgroundColor = [UIColor clearColor];
self.messageContentLabel.scrollEnabled = NO;
self.messageContentLabel.userInteractionEnabled = NO;
//self.messageContentLabel.numberOfLines = 0;
//self.messageContentLabel.adjustsFontSizeToFitWidth = YES;
// self.messageContentLabel.lineBreakMode = NSLineBreakByWordWrapping;
self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
self.messageContentLabel.text = contentValue;
self.messageContentLabel.textColor = [UIColor grayColor];
CGRect labelFrameContent = self.messageContentLabel.frame;
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer])
{
labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:17.0f]}
context:nil].size;
}
else
{
labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)];
}
#pragma clang diagnostic pop
注意：这个在ios 7.0以前的版本如果使用uitextview的话布局会有问题，如果使用uilabel的话在ios7.0上又会出现横竖线。所以最终的解决方案是区分当前的版本对待。
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//delete the unnessary separator line
static NSString *CellIndentifier = @"MessageDetailList";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIndentifier];
CGRect cellFrame =[cell frame];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIndentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
if (self.entriesArray &&
[self.entriesArray count] > 0) {
while ([cell.contentView.subviews lastObject] != nil)
{
[(UIView*)[cell.contentView.subviews lastObject] removeFromSuperview];
}
UILabel *dateLabel = [[UILabel alloc]initWithFrame:CGRectMake(cell.frame.size.width/4, 5.0f, cell.frame.size.width/2, 0.0f)];
self.cellDateLabel = dateLabel;
[dateLabel release];
self.cellDateLabel.text = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).date;
self.cellDateLabel.textAlignment = NSTextAlignmentCenter;
self.cellDateLabel.font = [UIFont systemFontOfSize:14.0];
self.cellDateLabel.textColor = [UIColor grayColor];
self.cellDateLabel.backgroundColor = [UIColor clearColor];
self.cellDateLabel.numberOfLines = 0;
self.cellDateLabel.lineBreakMode = NSLineBreakByWordWrapping;
CGRect labelFrameN = self.cellDateLabel.frame;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer]) {
NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.cellDateLabel.font forKey: NSFontAttributeName];
labelFrameN.size = [self.cellDateLabel.text boundingRectWithSize:CGSizeMake(self.cellDateLabel.frame.size.width, CGFLOAT_MAX)
options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
attributes:stringAttributes context:nil].size;
}else{
labelFrameN.size = [self.cellDateLabel.text sizeWithFont:self.cellDateLabel.font
constrainedToSize:CGSizeMake(self.cellDateLabel.frame.size.width, CGFLOAT_MAX)
lineBreakMode:self.cellDateLabel.lineBreakMode];
}
#pragma clang diagnostic pop
self.cellDateLabel.frame = labelFrameN;
[cell.contentView addSubview:self.cellDateLabel];
UIImageView *icon = [[UIImageView alloc]initWithFrame:CGRectMake(10.0f, self.cellDateLabel.frame.size.height + 10.0f,50.0f, 50.0f)];
self.imageView = icon;
self.imageView.image = [UIImage imageNamed:@"01_login_userdefaultavatar@2x.png"];
self.imageView.backgroundColor = [UIColor clearColor];
if (self.headImagesArray) {
[self.headImagesArray insertObject:self.imageView atIndex:indexPath.row];
}
[cell.contentView addSubview:[self.headImagesArray objectAtIndex:indexPath.row]];
[icon release];
//the content bg image
UIImageView *bgimageView = [[UIImageView alloc]initWithFrame:CGRectMake(65.0f, self.cellDateLabel.frame.size.height + 10.0f,cell.frame.size.width/3*2, 50.0f)];
self.messageContentbgImageView = bgimageView;
self.messageContentbgImageView.image = [UIImage imageNamed:@"04_message_messagebubble_gray@2x.png"];
self.messageContentbgImageView.backgroundColor = [UIColor clearColor];
[cell.contentView addSubview:self.messageContentbgImageView];
[bgimageView release];
//content label
NSString *contentValue = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).content;
CGFloat width = 0.0f;
CGSize orignalSize;
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer]){
orignalSize = [contentValue sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20.0f]}];
width = orignalSize.width;
}else{
width = [contentValue sizeWithFont:[UIFont systemFontOfSize:20.0f ]].width;
}
#pragma clang diagnostic pop
//set the most large width
if (width > cell.frame.size.width - 90.0f) {
width = cell.frame.size.width - 90.0f;
}
CGRect labelFrameContent;
if ([GeneralInfo getDeviceSystemVer]) {
UITextView *content = [[UITextView alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
self.messageContentLabel = content;
[content release];
self.messageContentLabel.font = [UIFont systemFontOfSize:16.0f];
self.messageContentLabel.backgroundColor = [UIColor clearColor];
self.messageContentLabel.scrollEnabled = NO;
self.messageContentLabel.userInteractionEnabled = NO;
self.messageContentLabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
self.messageContentLabel.text = contentValue;
self.messageContentLabel.textColor = [UIColor grayColor];
labelFrameContent = self.messageContentLabel.frame;
}
else
{
UILabel *content = [[UILabel alloc]initWithFrame:CGRectMake(0.0f, 0.0f, width, 0.0f)];
self.messageContent = content;
[content release];
self.messageContent.font = [UIFont systemFontOfSize:20.0];
self.messageContent.backgroundColor = [UIColor clearColor];
self.messageContent.numberOfLines = 0;
self.messageContent.adjustsFontSizeToFitWidth = YES;
self.messageContent.lineBreakMode = NSLineBreakByWordWrapping;
self.messageContent.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
labelFrameContent = self.messageContent.frame;
}
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer])
{
labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:17.0f]}
context:nil].size;
}
else
{
// labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)];
labelFrameContent.size = [contentValue sizeWithFont:self.messageContent.font
constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
lineBreakMode:self.messageContent.lineBreakMode];
}
#pragma clang diagnostic pop
/*#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
if ([GeneralInfo getDeviceSystemVer]) {
NSDictionary *stringAttributes = [NSDictionary dictionaryWithObject:self.messageContentLabel.font forKey: NSFontAttributeName];
labelFrameContent.size = [contentValue boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesLineFragmentOrigin
attributes:stringAttributes context:nil].size;
}else{
labelFrameContent.size = [contentValue sizeWithFont:self.messageContentLabel.font
constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
lineBreakMode:self.messageContentLabel.lineBreakMode];
}
#pragma clang diagnostic pop*/
//adjust the height
if (labelFrameContent.size.height < 50.0f) {
labelFrameContent.size.height = 50.0f;
}
labelFrameContent.size.width += 10.0f;
if (labelFrameContent.size.width > cell.frame.size.width - 90.0f) {
labelFrameContent.size.width = cell.frame.size.width - 90.0f;
}
labelFrameContent.origin.x = 70.0f;
labelFrameContent.origin.y = self.cellDateLabel.frame.size.height + 10.0f;
if ([GeneralInfo getDeviceSystemVer]){
self.messageContentLabel.frame = labelFrameContent;
[cell.contentView addSubview:self.messageContentLabel];
}else
{
self.messageContent.frame = labelFrameContent;
[cell.contentView addSubview:self.messageContent];
}
if (![GeneralInfo getDeviceSystemVer]){
UILabel *innerlabel = [[UILabel alloc]initWithFrame:CGRectMake(5.0f, 0.0f, self.messageContent.frame.size.width - 10.0f, self.messageContent.frame.size.height)];
innerlabel.textAlignment = NSTextAlignmentLeft;
innerlabel.font = [UIFont systemFontOfSize:16.0];
innerlabel.textColor = [UIColor grayColor];
innerlabel.backgroundColor = [UIColor clearColor];
innerlabel.text = contentValue;
innerlabel.numberOfLines = 0;
innerlabel.adjustsFontSizeToFitWidth = YES;
innerlabel.lineBreakMode = NSLineBreakByWordWrapping;
innerlabel.backgroundColor = [UIColor colorWithRed:241/255.0f green:241/255.0f blue:241/255.0f alpha:1.0];
self.innerLabel = innerlabel;
[self.messageContent addSubview:innerlabel];
[innerlabel release];
}
//then the image should first check the type
NSString *type = ((MessageDetailRecord *)[self.entriesArray objectAtIndex:indexPath.row]).currentMessageType;
if ([type isEqualToString:@"self"])
{
//then readjust the frame
((UIImageView *)[self.headImagesArray objectAtIndex:indexPath.row]).frame = CGRectMake(cell.frame.size.width - 50.0f, self.cellDateLabel.frame.size.height + 10.0f, 40.0f, 40.0f);
self.imageView.frame = CGRectMake(cell.frame.size.width - 60.0f, self.cellDateLabel.frame.size.height + 10.0f, 50.0f, 50.0f);
self.messageContentbgImageView.image = [UIImage imageNamed:@"04_message_messagebubble_blue@2x.png"];
self.messageContentbgImageView.frame = CGRectMake(cell.frame.size.width - 65.0f - cell.frame.size.width/3*2, self.cellDateLabel.frame.size.height + 10.0f, cell.frame.size.width/3*2, 50.0f);
if ([GeneralInfo getDeviceSystemVer]){
self.messageContentLabel.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
self.messageContentLabel.frame = CGRectMake(cell.frame.size.width - labelFrameContent.size.width - 70.0f, self.cellDateLabel.frame.size.height + 10.0f, labelFrameContent.size.width, labelFrameContent.size.height);
}else
{
self.messageContent.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
self.messageContent.frame = CGRectMake(cell.frame.size.width - labelFrameContent.size.width - 70.0f, self.cellDateLabel.frame.size.height + 10.0f, labelFrameContent.size.width, labelFrameContent.size.height);
self.innerLabel.backgroundColor = [UIColor colorWithRed:236/255.0f green:247/255.0f blue:253/255.0f alpha:1.0];
}
}
if ([GeneralInfo getDeviceSystemVer]){
cellFrame.size.height = self.cellDateLabel.frame.size.height + self.messageContentLabel.frame.size.height + 20.0f;
}else
{
cellFrame.size.height = self.cellDateLabel.frame.size.height + self.messageContent.frame.size.height + 20.0f;
}
[cell setFrame:cellFrame];
self.record = [self.entriesArray objectAtIndex:indexPath.row];
if(!self.record.appIcon) {
if (self.localTableView.dragging == NO && self.localTableView.decelerating == NO)
{
//if has the valid image url then should add to the downloader list
NSString *startURL = self.record.friendHeadImageUrl;
NSLog(@"the starturl is %@",startURL);
if (startURL &&
(NSNull *)startURL != [NSNull null] &&
[startURL length] > 0) {
NSString *endURL = [NSURL URLWithString:startURL];
if (endURL) {
[self startIconDownload:self.record forIndexPath:indexPath];
}
}
}
}else{
//should add the new bg image
((UIImageView *)[self.headImagesArray objectAtIndex:indexPath.row]).image = [UIImage imageNamed:@"friend_head_image_bg"];
UIImageView *tmp = [[UIImageView alloc]initWithFrame:CGRectMake(5.0f, 5.0f, 40.0f, 40.0f)];
tmp.image = self.record.appIcon;
[tmp setContentMode:UIViewContentModeScaleAspectFit];
[((UIImageView *)[self.headImagesArray objectAtIndex:indexPath.row]) addSubview:tmp];
[tmp release];
}
}
return cell;
}