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yy_model及 YYLabel
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一, yy_model
1.yy_model 可以存放包含数组的属性,调用方法如下:
+ (NSDictionary *)modelCustomPropertyMapper {
return @{@"girlid" : @"id",
@"gnumber" : @"info.gnumber",
@"name" : @"info.name",
@"icon" : @"info.icon",
@"des" : @"info.des",
@"arrayGiftData": @"gift"};
}
+ (NSDictionary *)modelContainerPropertyGenericClass {
return @{@"arrayGiftData" : [GoddessGiftData class]};
}
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {
if( !ISDICTIONARY(dic) ) return NO;
if (!ISSTRING(_url) || [_url isEqualToString:@""]) return NO;
return YES;
}
@class Shadow, Border, Attachment; @interface Attributes
@property (nonatomic,copy) NSString *name;
@property (nonatomic,strong) NSArray<Shadow*>* shadows; //Array<Shadow>
@property (nonatomic,strong)NSSet *borders; //Set<Border>
@property (nonatomic,strong)NSMutableDictionary *attachments; //Dict<NSString,Attachment>
@end @implementation Attributes
// 返回容器类中的所需要存放的数据类型 (以 Class 或 Class Name 的形式)。
+ (NSDictionary *)modelContainerPropertyGenericClass {
return @{@"shadows" : [Shadow class],
@"borders" : Border.class,
@"attachments" : @"Attachment" };
}
@end
二, YYLabel
1.在使用 YYLabel 时,一定要给该对象设置背景颜色,不然无法显示.
NSMutableAttributedString *one = [[NSMutableAttributedString alloc] initWithString:@"Shadow"];
one.yy_font = [UIFont boldSystemFontOfSize:];
one.yy_color = [UIColor whiteColor]; YYLabel *label = [YYLabel new];
label.attributedText = one;
label.frame = CGRectMake(, , , );
// 以下语句很重要,不要漏掉
label.backgroundColor = [UIColor colorWithWhite:0.933 alpha:1.000];
[self.view addSubview:label];
2.在 cell 中使用 YYLabel 时,cell 重用时,其中的 YYLabel 视图有可能会被清除.....因此需要在复用 cell 或创建 cell 后,判断 YYLabel 视图是否存在:若不存在,就创建.
3.YYLabel 视图的 attributedText属性,和普通 UILabel 的 attributedText 属性,基本相同,赋值方法均为_chatMsgLabel.attributedText = attrStr;而且都可以直接使用 NSAttributedString 对象的 appendAttributedString 属性/ addAttribute 属性.
(PS:使用yy_attachmentStringWithContent:...时,就不要使用 addAttribute 属性了,)
YYLabel 视图一个很大的便捷是:使用
NSMutableAttributedString 对象的拓展 yy_color 和 yy_setColor: range: 属性,快速设置文字的属性,代替了复杂的addAttribute 属性 .
唯一不同的一点就是:YYLabel无法识别 NSAttributedString 类的 attributedStringWithAttachment 方法添加的图片.YYLabel 添加图片需要 NSAttributedString的拓展类方法:
yy_attachmentStringWithContent:....
4.在cell 中调用YYLabel时,可以用其对象的 textLayout 属性来代替 attributedText 给YYLabel赋值,同时使用 textLayout 属性的 textBoundingSize 属性
来设置 YYLabel 的宽高.代码如下:
(PS:设置YYLabel 的宽高时,尽量比 YYTextLayout 对象的 textBoundingSize 属性大,不然显示不全文字.....一开始我也质疑该属性是否准确,但是通过看层次结构图之后,就确定是我需要加大 textBoundingSize 属性值了....一定要有一个勇于怀疑的心,多尝试!!!)
YYLabel *infoLabel = [[YYLabel alloc] init];
[middleView addSubview:infoLabel];
_briefContentLabel = infoLabel;
[infoLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.mas_equalTo(seperateLine.mas_bottom).offset(cInfoViewTop);
make.height.mas_equalTo();
make.left.right.mas_equalTo(seperateLine);
}];
// 创建 textLayout
- (YYTextLayout*)createTextLayout:(NSString *)newText
{
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:newText];
attr.yy_font = [[PTVConfig instance] normalFont:10 ];
attr.yy_color = MAKECOLOR(0x9B, 0x9B, 0x9B);
attr.yy_lineSpacing = 5;
attr.yy_alignment = NSTextAlignmentCenter;
CGFloat maxWidth = subtitleMaxWidth ;
CGSize containerSize = CGSizeMake(maxWidth , CGFLOAT_MAX);
YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:containerSize text:attr];
return layout;
}
// 调用方式
- (void)updateLabelText:(NSString *)str
{
// 设置内容
self.subtitleLabel.textLayout = [self createTextLayout:str];
CGFloat labelHeight = [self heightOfInfoText:str];
[self.subtitleLabel mas_updateConstraints:^(MASConstraintMaker *make) {
make.height.mas_equalTo(labelHeight);
}];
}
// 高度往往有10个点的误差,需要比 YYLayout 计算的高度多10个点,参考https://www.jianshu.com/p/0b7759d63074
- (CGFloat)heightOfInfoText:(NSString *)str
{
YYTextLayout *layout = [self createTextLayout:str];
CGFloat infoHeight = layout.textBoundingSize.height + 10 ;
return infoHeight;
}
或者使用不同属性的字符串
#pragma mark 设置特殊的文字和页面高度
- (NSMutableAttributedString *)getCardSuccMsgAttrStr{
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:@"在接下来的30分钟内，主播收到的里程值会全部双倍"];
attr.yy_font = [[PTVConfig instance] normalFont: ];
attr.yy_color = MAKECOLOR(0x9B, 0x9B, 0x9B);
[attr yy_setColor:UIColorFromRGB(0xD2800C) range:NSMakeRange(, )];
attr.yy_lineSpacing = ;
attr.yy_alignment = NSTextAlignmentCenter;
return attr;
} - (NSMutableAttributedString *)getPrestigeSuccMsgAttrStr{
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:@"主播声望值+1"];
attr.yy_font = [[PTVConfig instance] normalFont: ];
attr.yy_color = MAKECOLOR(0x9B, 0x9B, 0x9B);
[attr yy_setColor:UIColorFromRGB(0xD2800C) range:NSMakeRange(, )];
attr.yy_lineSpacing = ;
attr.yy_alignment = NSTextAlignmentCenter;
return attr;
} - (NSMutableAttributedString *)getFailMsg:(NSString *)msg{
NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:msg];
attr.yy_font = [[PTVConfig instance] normalFont: ];
attr.yy_color = MAKECOLOR(0x9B, 0x9B, 0x9B);
attr.yy_lineSpacing = ;
attr.yy_alignment = NSTextAlignmentCenter;
return attr;
} // 调用方式
- (void)updateLabelText:(ToastMsgType)type errmsg:(NSString *)errmsg
{
NSMutableAttributedString *attri = [NSMutableAttributedString new];
switch (type) {
case :
attri = [self getCardSuccMsgAttrStr];
break; case :
attri = [self getPrestigeSuccMsgAttrStr];
break; case :
attri = [self getFailMsg:errmsg];
break;
}
// 设置内容
self.subtitleLabel.textLayout = [self createTextLayout:attri]; CGFloat labelHeight = [self heightOfInfoText:attri]; [self mas_updateConstraints:^(MASConstraintMaker *make) {
make.height.mas_equalTo(labelHeight);
}];
} // 创建 textLayout
- (YYTextLayout*)createTextLayout:(NSMutableAttributedString *)attr
{
CGFloat maxWidth = subtitleMaxWidth ;
CGSize containerSize = CGSizeMake(maxWidth , CGFLOAT_MAX);
YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:containerSize text:attr];
return layout;
} // 高度往往有10个点的误差,需要比 YYLayout 计算的高度多10个点
- (CGFloat)heightOfInfoText:(NSMutableAttributedString *)attr
{
YYTextLayout *layout = [self createTextLayout:attr];
CGFloat infoHeight = layout.textBoundingSize.height + [self getTopBottomMargin] ;
return infoHeight;
}
或者使用container的方式
YYTextContainer *container = [YYTextContainer containerWithSize:containerSize];
container.maximumNumberOfRows = ;
container.truncationType = YYTextTruncationTypeEnd;
YYTextLayout *layout = [YYTextLayout layoutWithContainer:container text:attrM];
