iOS UIButton按钮 UILabel 文本

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发布时间：2019-06-13

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系统字体

NSArray *familyNames = [[NSArray alloc] initWithArray:[UIFont familyNames]];NSArray *fontNames;NSInteger indFamily, indFont;for (indFamily=0; indFamily<[familyNames count]; ++indFamily){    NSLog(@"Family name: %@", [familyNames objectAtIndex:indFamily]);    fontNames = [[NSArray alloc] initWithArray:            [UIFont fontNamesForFamilyName:            [familyNames objectAtIndex:indFamily]]];    for (indFont=0; indFont<[fontNames count]; ++indFont)    {        NSLog(@"    Font name: %@", [fontNames objectAtIndex:indFont]);    }}

Button

//iOS 7下给UIButton加边框[testBtn.layer setMasksToBounds:YES];[testBtn.layer setCornerRadius:8.0]; //设置矩圆角半径[testBtn.layer setBorderWidth:1.0];   //边框宽度CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();CGColorRef colorref = CGColorCreate(colorSpace,(CGFloat[]){ 1, 0, 0, 1 });[testBtn.layer setBorderColor:colorref];//边框颜色

//遍历button改标题- (void)changeName:(UIButton *)btn{    for (NSInteger i = 0; i < 10; i ++) {        if (btn.tag == 10) {            [btn setTitle:@"我的名字不一样" forState:UIControlStateNormal];        }else{            [btn setTitle:@"一样的" forState:UIControlStateNormal];        }    }}

　3.关于UIButton，既可以采用setBackgroundImage来设置底部图片，同时也可以采用 setImage方法；

两者还是有一定区别的；

首先setBackgroundImage，image会随着button的大小而改变，图片自动会拉伸来适应button的大小，这个时候当然可以设置button的title，image不会挡住title；

相反的的setImage，图片不会进行拉伸，原比例的显示在button上，此时再设置title，title将无法显示，因此可以根据需求选中方法；

UIButton点击后改变背景的方法

//初始设置：UIImage *bgImg1 = [UIImage imageNamed:@"Selected.png"];UIImage *bgImg2 = [UIImage imageNamed:@"Unselected.png"];[btn setImage:bgImg2 forState:UIControlStateNormal];[btn setImage:bgImg1 forState:UIControlStateSelected];//然后在button的Action方法改变button状态：- (IBAction) buttonTouch:(id)sender{    UIButton *button = (UIButton *)sender;    button.selected = !button.selected;}

一个uiview上多个button，如何判断是哪个按钮被点击了

UIButton *button = (UIButton *)sender;

1.根据button.tag来区分

2.或者根据button的title

button字体颜色

UIButton *button1=[UIButton buttonWithType:UIButtonTypeRoundedRect];

[button1 setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];

/****************Label****************************/

label中显示不同颜色的字以及不同字体，字体高亮，Diy label

改变UILabel里的一段文字的颜色

1.core text 2.用NSAttributedString ,...setAttributedText:

给UILabel的文本添加阴影效果

Lable.shadowColor = color;

Lable.shadowOffset = CGSizeMake(0, -1.0);

下拉框的实现 UITableView + UIButton + UILabel

UIlabel旋转90度

lb.transform=CGAffineTransformMakeRotation(M_PI/2);

button取标题值赋值给label

label.text = button.currenTitle

-（IBAction）buttonClicked：（id）sender{

UIButton *button = （UIButton*）sender; //得到你点击的button

NSString *buttonTitle = button.titleLabel.text; //得到button的title并赋值给string类型的buttonTitle

(比如你的label名字就叫label的话)

label.text = buttonTitle; //给label赋值

}

如何将UILabel中的文字变链接？ FromCOCOchina

自己定义一个类urlLabel

#import 
     
      @class URLLabel;@protocol MyLabelDelegate 
      
       @required- (void)myLabel:(URLLabel *)myLabel touchesWtihTag:(NSInteger)tag;@end@interface URLLabel : UILabel {    id 
       
         delegate;}@property (nonatomic, assign) id 
        
          delegate;- (id)initWithFrame:(CGRect)frame;@end#import "URLLabel.h"#define FONTSIZE 13#define COLOR(R,G,B,A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]@implementation URLLabel@synthesize delegate;// 设置换行模式,字体大小,背景色,文字颜色,开启与用户交互功能,设置label行数,0为不限制- (id)initWithFrame:(CGRect)frame {    if (self = [super initWithFrame:frame])    {        [self setLineBreakMode:UILineBreakModeWordWrap|UILineBreakModeTailTruncation];        [self setFont:[UIFont systemFontOfSize:FONTSIZE]];        [self setBackgroundColor:[UIColor clearColor]];        [self setTextColor:COLOR(59,136,195,1.0)];        [self setUserInteractionEnabled:YES];        [self setNumberOfLines:0];    }    return self;}// 点击该label的时候, 来个高亮显示- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {    [self setTextColor:[UIColor purpleColor]];}// 还原label颜色,获取手指离开屏幕时的坐标点, 在label范围内的话就可以触发自定义的操作- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {    [self setTextColor:COLOR(59,136,195,1.0)];    UITouch *touch = [touches anyObject];    CGPoint points = [touch locationInView:self];    if (points.x >= self.frame.origin.x && points.y >= self.frame.origin.y && points.x <= self.frame.size.width && points.y <= self.frame.size.height)    {        [delegate myLabel:self touchesWtihTag:self.tag];    }}- (void)dealloc {    [super dealloc];}

完整的超链接的UILabel教程、

UILabel 触摸操作

label实时显示textfield的输入

UILabel *textLabel；

UITextField *textField；

-(BOOL) textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

{

textLabel.text = [textField.text stringByAppendingString:string];

return YES;

}

Label自适应

//Try to call this function after you have set the Label "width", "font" and "text": -(void)resizeLabel:(UILabel *)aLabel { aLabel.lineBreakMode = UILineBreakModeWordWrap; aLabel.numberOfLines = 9999; CGSize aSize = [aLabel.text sizeWithFont:aLabel.font constrainedToSize:CGSizeMake(aLabel.frame.size.width, 9999.0f) lineBreakMode:UILineBreakModeWordWrap]; aLabel.frame = CGRectMake(aLabel.frame.origin.x, aLabel.frame.origin.y, aSize.width, aSize.height+20.0f); }

转载于:https://www.cnblogs.com/hl666/p/3702363.html

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