#pragma mark - 代理方法
// 得出方案:在这个方法返回之前就要计算cell的高度
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
LZJStatus *status = self.statuses[indexPath.row];
CGFloat space = 10;
/** 图像 */
CGFloat iconX = space;
CGFloat iconY = space;
CGFloat iconWH = 30;
CGRect iconImageViewFrame = CGRectMake(iconX, iconY, iconWH, iconWH);
/** 正文 */
CGFloat textX = iconX;
CGFloat textY = CGRectGetMaxY(iconImageViewFrame) + space;
CGFloat textW = [UIScreen mainScreen].bounds.size.width - 2 * space;
NSDictionary *textAtt = @{NSFontAttributeName : [UIFont systemFontOfSize:14]};
// 最大宽度是textW,高度不限制
CGSize textSize = CGSizeMake(textW, MAXFLOAT);
CGFloat textH = [status.text boundingRectWithSize:textSize options:NSStringDrawingUsesLineFragmentOrigin attributes:textAtt context:nil].size.height;
CGRect text_LabelFrame = CGRectMake(textX, textY, textW, textH);
CGFloat cellHeight = 0;
/** 配图 */
if (status.picture) { // 有配图
CGFloat pictureWH = 100;
CGFloat pictureX = iconX;
CGFloat pictureY = CGRectGetMaxY(text_LabelFrame) + space;
CGRect pictureImageViewFrame = CGRectMake(pictureX, pictureY, pictureWH, pictureWH);
cellHeight = CGRectGetMaxY(pictureImageViewFrame) + space;
} else {
cellHeight = CGRectGetMaxY(text_LabelFrame) + space;
}
// self-sizing(iOS8 以后)
// 告诉tableView所有cell的真实高度是自动计算的(根据设置的约束)
self.tableView.rowHeight = UITableViewAutomaticDimension;
// 设置估算高度
//self.tableView.estimatedRowHeight = 44;
return cellHeight;
}
@end
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#define LZJTextFont [UIFont systemFontOfSize:14]
#define LZJNameFont [UIFont systemFontOfSize:14]
@interface LZJStatusCell ()
/** 图像 */
@property (nonatomic, weak) UIImageView *iconImageView;
/** 昵称 */
@property (nonatomic, weak) UILabel *nameLabel;
/** vip */
@property (nonatomic, weak) UIImageView *vipImageView;
/** 正文 */
@property (nonatomic, weak) UILabel *text_Label;
/** 配图 */
@property (nonatomic, weak) UIImageView *pictureImageView;
@end
@implementation XMGStatusCell
// 添加子控件的原则:把所有有可能显示的子控件都先添加进去
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
/** 图像 */
UIImageView *iconImageView = [[UIImageView alloc] init];
[self.contentView addSubview:iconImageView];
self.iconImageView = iconImageView;
/** 配图 */
UIImageView *pictureImageView = [[UIImageView alloc] init];
[self.contentView addSubview:pictureImageView];
self.pictureImageView = pictureImageView;
/** vip */
UIImageView *vipImageView = [[UIImageView alloc] init];
vipImageView.contentMode = UIViewContentModeCenter;
vipImageView.image = [UIImage imageNamed:@"vip"];
[self.contentView addSubview:vipImageView];
self.vipImageView = vipImageView;
/** 昵称 */
UILabel *nameLabel = [[UILabel alloc] init];
nameLabel.font = LZJNameFont;
[self.contentView addSubview:nameLabel];
self.nameLabel = nameLabel;
/** 正文 */
UILabel *text_Label = [[UILabel alloc] init];
text_Label.font = LZJTextFont;
text_Label.numberOfLines = 0;
[self.contentView addSubview:text_Label];
self.text_Label = text_Label;
}
return self;
}
- (void)layoutSubviews
{
[super layoutSubviews];
CGFloat space = 10;
/** 图像 */
CGFloat iconX = space;
CGFloat iconY = space;
CGFloat iconWH = 30;
self.iconImageView.frame = CGRectMake(iconX, iconY, iconWH, iconWH);
/** 昵称 */
CGFloat nameX = CGRectGetMaxX(self.iconImageView.frame) + space;
CGFloat nameY = iconY;
NSDictionary *nameAtt = @{NSFontAttributeName : LZJNameFont};
// 计算昵称文字的尺寸
CGSize nameSize = [self.status.name sizeWithAttributes:nameAtt];
CGFloat nameW = nameSize.width;
CGFloat nameH = nameSize.height;
self.nameLabel.frame = CGRectMake(nameX, nameY, nameW, nameH);
/** vip */
if (self.status.isVip) {
CGFloat vipX = CGRectGetMaxX(self.nameLabel.frame) + space;
CGFloat vipW = 14;
CGFloat vipH = nameH;
CGFloat vipY = nameY;
self.vipImageView.frame = CGRectMake(vipX, vipY, vipW, vipH);
}
/** 正文 */
CGFloat textX = iconX;
CGFloat textY = CGRectGetMaxY(self.iconImageView.frame) + space;
CGFloat textW = self.contentView.frame.size.width - 2 * space;
NSDictionary *textAtt = @{NSFontAttributeName : LZJTextFont};
// 最大宽度是textW,高度不限制
CGSize textSize = CGSizeMake(textW, MAXFLOAT);
CGFloat textH = [self.status.text boundingRectWithSize:textSize options:NSStringDrawingUsesLineFragmentOrigin attributes:textAtt context:nil].size.height;
self.text_Label.frame = CGRectMake(textX, textY, textW, textH);
/** 配图 */
if (self.status.picture) { // 有配图
CGFloat pictureWH = 100;
CGFloat pictureX = iconX;
CGFloat pictureY = CGRectGetMaxY(self.text_Label.frame) + space;
self.pictureImageView.frame = CGRectMake(pictureX, pictureY, pictureWH, pictureWH);
}
}
- (void)setStatus:(LZJStatus *)status
{
_status = status;
self.iconImageView.image = [UIImage imageNamed:status.icon];
self.nameLabel.text = status.name;
if (status.isVip) {
self.nameLabel.textColor = [UIColor orangeColor];
self.vipImageView.hidden = NO;
} else {
self.vipImageView.hidden = YES;
self.nameLabel.textColor = [UIColor blackColor];
}
self.text_Label.text = status.text;
if (status.picture) { // 有配图
self.pictureImageView.hidden = NO;
self.pictureImageView.image = [UIImage imageNamed:status.picture];
} else { // 无配图
self.pictureImageView.hidden = YES;
}
}
@end