您的位置:首页 > 产品设计 > UI/UE

UILabel字体加粗等属性和特效

2016-09-19 11:01 447 查看
/*

AccessingtheTextAttributes

textproperty

fontproperty

textColorproperty

textAlignmentproperty

lineBreakModeproperty

enabledproperty

SizingtheLabel’sText

adjustsFontSizeToFitWidthproperty

baselineAdjustmentproperty

minimumFontSizeproperty无例

numberOfLinesproperty

ManagingHighlightValues

highlightedTextColorproperty

highlightedproperty

DrawingaShadow

shadowColorproperty

shadowOffsetproperty

DrawingandPositioningOverrides

–textRectForBounds:limitedToNumberOfLines:无例

–drawTextInRect:无例

SettingandGettingAttributes

userInteractionEnabledproperty

*/

UILabelUIFont//defaultsystemfont17plain

UILabel垂直居上对齐[labelsizeToFit];

//设置文字过长时的显示格式

label.lineBreakMode=UILineBreakModeWordWrap;

typedefenum{

UILineBreakModeWordWrap=0,//Wrapatwordboundaries

UILineBreakModeCharacterWrap,//Wrapatcharacterboundaries

UILineBreakModeClip,//截去多余部分Simplyclipwhenithitstheendoftherect截去多余部分

UILineBreakModeHeadTruncation,//截去头部Truncateatheadofline:"...wxyz".Willtruncatemultilinetextonfirstline

UILineBreakModeTailTruncation,//截去尾部Truncateattailofline:"abcd...".Willtruncatemultilinetextonlastline

UILineBreakModeMiddleTruncation,//截去中间Truncatemiddleofline:"ab...yz".Willtruncatemultilinetextinthemiddle

}UILineBreakMode;

//设置label的行数,这个可以根据上节的UITextView自适应高度

label.numberOfLines=2;

label.lineBreakMode=UILineBreakModeWordWrap;

label.textAlignment=UITextAlignmentCenter;//设置文字对齐位置,居左,居中,居右

label.text=@
"123"
;//设置显示文字


//设置文字颜色,可以有多种颜色可以选择

label.textColor=[UIColorwhiteColor];


label.backgroundColor=[UIColorblackColor];


//设置字体:粗体,正常的是SystemFontOfSize,调用系统的字体配置


label.font=[UIFontboldSystemFontOfSize:20];



label.font=[UIFontfontWithName:@
"ArialRoundedMTBold"
size:(36.0)];


//[UIFontfontWithName:@"Arial"size:14.0]];//非加粗

//设置文本是否高亮和高亮时的颜色


scoreLabel.highlighted=YES;


scoreLabel.highlightedTextColor=[UIColororangeColor];


//设置阴影的颜色和阴影的偏移位置


scoreLabel.shadowColor=[UIColorredColor];


scoreLabel.shadowOffset=CGSizeMake(1.0,1.0);


//设置是否能与用户进行交互


scoreLabel.userInteractionEnabled=YES;


//设置label中的文字是否可变,默认值是YES


scoreLabel.enabled=NO;


//设置字体大小是否适应label宽度


label.adjustsFontSizeToFitWidth=YES;


//如果adjustsFontSizeToFitWidth属性设置为YES,这个属性就来控制文本基线的行为

coreLabel.baselineAdjustment=UIBaselineAdjustmentNone

typedefenum{

UIBaselineAdjustmentAlignBaselines=0,//default.usedwhenshrinkingtexttopositionbasedontheoriginalbaseline

UIBaselineAdjustmentAlignCenters,

UIBaselineAdjustmentNone,

}UIBaselineAdjustment;

//最小文字号数

minimumFontSize

设置背景色为透明

scoreLabel.backgroudColor=[UIColorclearColor];


自定义的颜色:

scoreLabel.backgroudColor=[UIColorclearColor];


UIColor*color=[UIColorcolorWithRed:1.0fgreen:50.0fblue:0.0falpha:1.0f];


scoreLabel.textColor=[UIColorcolor]

//UIColor里的RGB值是CGFloat类型的在0~1范围内,对应0~255的颜色值范围。



-(CGRect)textRectForBounds:(CGRect)boundslimitedToNumberOfLines:(NSInteger)numberOfLines;

//改变绘文字属性.重写时调用super可以按默认图形属性绘制,若自己完全重写绘制函数,就不用调用super了.

-(void)drawTextInRect:(CGRect)rect;

eg:

UILabel*label=[[UILabelalloc]initWithFrame:CGRectMake(0,0,75,40)];//声明UIlbel并指定其位置和长宽
label.backgroundColor=[UIColorclearColor];//设置label的背景色,这里设置为透明色。
label.font=[UIFontfontWithName:@"Helvetica-Bold"size:13];//设置label的字体和字体大小。

//lable的旋转
label.transform=CGAffineTransformMakeRotation(0.1);//设置label的旋转角度
label.text=@“helloworld”;//设置label所显示的文本
label.textColor=[UIColorwhiteColor];//设置文本的颜色
label.shadowColor=[UIColorcolorWithWhite:0.1falpha:0.8f];//设置文本的阴影色彩和透明度。
label.shadowOffset=CGSizeMake(2.0f,2.0f);//设置阴影的倾斜角度。
label.textAlignment=UITextAlignmentCenter;//设置文本在label中显示的位置,这里为居中。
//换行技巧:如下换行可实现多行显示,但要求label有足够的宽度。
label.lineBreakMode=UILineBreakModeWordWrap;//指定换行模式
label.numberOfLines=2;//指定label的行数










让label自适应里面的文字,自动调整宽度和高度的

UILabel*label=[[UILabelalloc]initWithFrame:CGRectMake(0,0,0,0)];这个frame是初设的,没关系,后面还会重新设置其size。
[labelsetNumberOfLines:0];
NSString*s=@"string......";
UIFont*font=[UIFontfontWithName:@"Arial"size:12];
CGSizesize=CGSizeMake(320,2000);
CGSizelabelsize=[ssizeWithFont:fontconstrainedToSize:sizelineBreakMode:UILineBreakModeWordWrap];
[labelsetFrame:CGRectMake:(0,0,labelsize.width,labelsize.height)];
[self.viewaddSubView:label];
这样就可以对s赋值让其自动调整其大小了。

UILabel跑马灯效果

//http://www.cocoachina.com/bbs/read.php?tid=74540

#import<UIKit/UIKit.h>

@interfaceTextFlowView:UIView{

//显示文本的标签

UILabel*_firstLabel;

UILabel*_secondLabel;

//定时器

NSTimer*_timer;

//显示的文本

NSString*_text;

//是否需要滚动

BOOL_needFlow;

//控件的框架大小

CGRect_frame;

//文本的字体

UIFont*_font;

//当前第一个控件的索引

NSInteger_startIndex;

//定时器每次执行偏移后,累计的偏移量之和

CGFloat_XOffset;

//文本显示一行,需要的框架大小

CGSize_textSize;

}

-(id)initWithFrame:(CGRect)frameText:(NSString*)text;

-(void)setFont:(UIFont*)font;

-(void)setText:(NSString*)text;

@end

//////////////////////////////////////////////////////////////////////////////////

#import"TextFlowView.h"

@implementationTextFlowView

#pragmamark-

#pragmamark内部调用

#defineSPACE_WIDTH50

#defineLABEL_NUM2

//改变一个TRect的起始点位置,但是其终止店点的位置不变,因此会导致整个框架大小的变化

-(CGRect)moveNewPoint:(CGPoint)pointrect:(CGRect)rect

{

CGSizetmpSize;

tmpSize.height=rect.size.height+(rect.origin.y-point.y);

tmpSize.width=rect.size.width+(rect.origin.x-point.x);

returnCGRectMake(point.x,point.y,tmpSize.width,tmpSize.height);

}

//开启定时器

-(void)startRun

{

_timer=[NSTimerscheduledTimerWithTimeInterval:0.02target:selfselector:@selector(timerAction)userInfo:nilrepeats:YES];

}

//关闭定时器

-(void)cancelRun

{

if(_timer)

{

[_timerinvalidate];

}

}

//定时器执行的操作

-(void)timerAction

{

staticCGFloatoffsetOnce=-1;

_XOffset+=offsetOnce;

if(_XOffset+_textSize.width<=0)

{

_XOffset+=_textSize.width;

_XOffset+=SPACE_WIDTH;

}

[selfsetNeedsDisplay];

}

//计算在给定字体下,文本仅显示一行需要的框架大小

-(CGSize)computeTextSize:(NSString*)text

{

if(text==nil)

{

returnCGSizeMake(0,0);

}

CGSizeboundSize=CGSizeMake(10000,100);

CGSizestringSize=[_textsizeWithFont:_fontconstrainedToSize:boundSizelineBreakMode:UILineBreakModeWordWrap];

returnstringSize;

}

-(id)initWithFrame:(CGRect)frameText:(NSString*)text

{

self=[superinitWithFrame:frame];

if(self)

{

_text=[textretain];

_frame=frame;

//默认的字体大小

_font=[UIFontsystemFontOfSize:16.0F];

self.backgroundColor=[UIColorredColor];

//初始化标签

//判断是否需要滚动效果

_textSize=[selfcomputeTextSize:text];

//需要滚动效果

if(_textSize.width>frame.size.width)

{

_needFlow=YES;

[selfstartRun];

}

}

returnself;

}

//OnlyoverridedrawRect:ifyouperformcustomdrawing.

//Anemptyimplementationadverselyaffectsperformanceduringanimation.

-(void)drawRect:(CGRect)rect

{

CGContextRefcontext=UIGraphicsGetCurrentContext();

CGContextSetFillColorWithColor(context,[UIColorwhiteColor].CGColor);

//Drawingcode

CGFloatstartYOffset=(rect.size.height-_textSize.height)/2;

CGPointorigin=rect.origin;

if(_needFlow==YES)

{

//NSLog(@"OFFSETX:%f",_XOffset);

//NSLog(@"textwidth:%f",_textSize.width);

rect=[selfmoveNewPoint:CGPointMake(_XOffset,startYOffset)rect:rect];

//NSLog(@"rectX:%fY:%f",rect.origin.x,rect.origin.y);

//NSLog(@"rectW:%fH:%f",rect.size.width,rect.size.height);

while(rect.origin.x<=rect.size.width+rect.origin.x)

{

[_textdrawInRect:rectwithFont:_font];

rect=[selfmoveNewPoint:CGPointMake(rect.origin.x+_textSize.width+SPACE_WIDTH,rect.origin.y)rect:rect];

//NSLog(@"inner->rectX:%fY:%f",rect.origin.x,rect.origin.y);

//NSLog(@"inner->rectW:%fH:%f",rect.size.width,rect.size.height);

}

}

else

{

//在控件的中间绘制文本

origin.x=(rect.size.width-_textSize.width)/2;

origin.y=(rect.size.height-_textSize.height)/2;

rect.origin=origin;

[_textdrawInRect:rectwithFont:_font];

}

}

-(void)dealloc

{

[_textrelease];

[superdealloc];

}

#pragmamark-

#pragmamark外部调用

-(void)setFont:(UIFont*)font

{

_font=font;

}

-(void)setText:(NSString*)text

{

[_textrelease];

_text=[textretain];

}

@end

美化UILabel中的字体代码分享http://www.devdiv.com/iOS_iPhone-%E7%BE%8E%E5%8C%96UILabel%E4%B8%AD%E7%9A%84%E5%AD%97%E4%BD%93%E4%BB%A3%E7%A0%81%E5%88%86%E4%BA%AB-thread-122319-1-1.htmlUILabel跑马灯效果http://hi.baidu.com/suxinde2009/blog/item/5bcd0e60dd9bb77f0d33fac3.html分享一个可垂直顶端对齐的UILabelhttp://www.devdiv.com/%E5%88%86%E4%BA%AB%E4%B8%80%E4%B8%AA%E5%8F%AF%E5%9E%82%E7%9B%B4%E9%A1%B6%E7%AB%AF%E5%AF%B9%E9%BD%90%E7%9A%84UILabel-weblog-64796-7239.html

让UILabel具有链接功能,点击后调用safari打开网址

//侬侬官网连接
UILabel*labelGovUrl=[[UILabelalloc]initWithFrame:CGRectMake(73.0,330.0,180.0,40.0)];
labelGovUrl.autoresizingMask=(UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight);
labelGovUrl.text=@"侬侬官网>";
labelGovUrl.backgroundColor=[UIColorclearColor];
labelGovUrl.textColor=[UIColorwhiteColor];
labelGovUrl.font=[UIFontfontWithName:@"Helvetica-Bold"size:14];
labelGovUrl.userInteractionEnabled=YES;
labelGovUrl.tag=K_NNGOV_WEBSITE_LABEL_URL;

UITapGestureRecognizer*tapGesture=
[[[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(openURL:)]autorelease];
[labelGovUrladdGestureRecognizer:tapGesture];
[self.viewaddSubview:labelGovUrl];
[labelGovUrlrelease];

-(void)openURL:(UITapGestureRecognizer*)gesture{
NSIntegertag=gesture.view.tag;
NSString*url=nil;
if(tag==K_NNWEIBO_LABEL_URL){
url=@"http://t.qq.com/yourgame/";
}
if(tag==K_NNGOV_WEBSITE_LABEL_URL){
url=@"http://www.zjnn.cn/";
}
[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:url]];
}


内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: