zoukankan      html  css  js  c++  java
  • XCode中动态添加Label控件

    UILabel *label = [[ UILabel alloc] init];
    label.text = @"xxx";
    label.frame = CGRectMake(0,0,100,100) ;
    label.backgroundColor = [UIColor redColor];
    
    //添加事件。
    label.userInteractionEnabled = YES;
    UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];  
    [label addGestureRecognizer:singleTap];  
    [singleTap release];
    
    [self.view addSubview:label];
    [label release] ;
    
    //事件方法
    - (void)handleSingleTap:(UIGestureRecognizer *)gestureRecognizer 
    {
        //事件处理。
    }
    #import "LabelTestViewController.h"     
    @implementation LabelTestViewController     
    /*   
     Accessing the Text Attributes   
     text  property     
     font  property     
     textColor  property     
     textAlignment  property     
     lineBreakMode  property       
     enabled  property     
     Sizing the Label’s Text   
     adjustsFontSizeToFitWidth  property     
     baselineAdjustment  property     
     minimumFontSize  property   无例   
     numberOfLines  property     
     Managing Highlight Values   
     highlightedTextColor  property     
     highlighted  property     
     Drawing a Shadow   
     shadowColor  property     
     shadowOffset  property     
     Drawing and Positioning Overrides   
     – textRectForBounds:limitedToNumberOfLines: 无例    
     – drawTextInRect:  无例   
     Setting and Getting Attributes   
     userInteractionEnabled  property     
     */    
    // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.     
    - (void)viewDidLoad {     
        UILabel *label1 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 20.0, 200.0, 50.0)];     
        UILabel *label2 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 80.0, 200.0, 50.0)];     
        UILabel *label3 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 140.0, 200.0, 50.0)];     
        UILabel *label4 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 200.0, 200.0, 50.0)];     
        UILabel *label5 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 260.0, 200.0, 50.0)];     
        UILabel *label6 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 320.0, 200.0, 50.0)];     
        UILabel *label7 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 380.0, 200.0, 50.0)];     
        //设置显示文字     
        label1.text = @"label1";     
        label2.text = @"label2";     
        label3.text = @"label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--";     
        label4.text = @"label4--label4--label4--label4--";     
        label5.text = @"label5--label5--label5--label5--label5--label5--";     
        label6.text = @"label6";     
        label7.text = @"label7";     
        //设置字体:粗体,正常的是 SystemFontOfSize     
        label1.font = [UIFont boldSystemFontOfSize:20];     
        //设置文字颜色  
        label1.textColor = [UIColor orangeColor];     
        label2.textColor = [UIColor purpleColor];     
        //设置文字位置     
        label1.textAlignment = UITextAlignmentRight;     
        label2.textAlignment = UITextAlignmentCenter;     
        //设置字体大小适应label宽度     
        label4.adjustsFontSizeToFitWidth = YES;     
      
        //设置label的行数     
        label5.numberOfLines = 2;    
        UIlabel.backgroudColor=[UIColor clearColor]; //可以去掉背景色   
     
        //设置高亮     
        label6.highlighted = YES;     
        label6.highlightedTextColor = [UIColor orangeColor];     
        //设置阴影     
        label7.shadowColor = [UIColor redColor];     
        label7.shadowOffset = CGSizeMake(1.0,1.0);     
        //设置是否能与用户进行交互     
        label7.userInteractionEnabled = YES;     
        //设置label中的文字是否可变,默认值是YES     
        label3.enabled = NO;     
        //设置文字过长时的显示格式     
        label3.lineBreakMode = UILineBreakModeMiddleTruncation;//截去中间     
    //  typedef enum {     
    //      UILineBreakModeWordWrap = 0,     
    //      UILineBreakModeCharacterWrap,     
    //      UILineBreakModeClip,//截去多余部分     
    //      UILineBreakModeHeadTruncation,//截去头部     
    //      UILineBreakModeTailTruncation,//截去尾部     
    //      UILineBreakModeMiddleTruncation,//截去中间     
    //  } UILineBreakMode;     
        //如果adjustsFontSizeToFitWidth属性设置为YES,这个属性就来控制文本基线的行为     
        label4.baselineAdjustment = UIBaselineAdjustmentNone;     
    //  typedef enum {     
    //      UIBaselineAdjustmentAlignBaselines,     
    //      UIBaselineAdjustmentAlignCenters,     
    //      UIBaselineAdjustmentNone,     
    //  } UIBaselineAdjustment;     
        [self.view addSubview:label1];     
        [self.view addSubview:label2];     
        [self.view addSubview:label3];     
        [self.view addSubview:label4];     
        [self.view addSubview:label5];     
        [self.view addSubview:label6];     
        [self.view addSubview:label7];     
        [label1 release];     
        [label2 release];     
        [label3 release];     
        [label4 release];     
        [label5 release];     
        [label6 release];     
        [label7 release];     
        [super viewDidLoad];     
    }     
    /*   
     // Override to allow orientations other than the default portrait orientation.   
     - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {   
     // Return YES for supported orientations   
     return (interfaceOrientation == UIInterfaceOrientationPortrait);   
     }   
     */    
    - (void)didReceiveMemoryWarning {     
        // Releases the view if it doesn't have a superview.     
        [super didReceiveMemoryWarning];     
        // Release any cached data, images, etc that aren't in use.     
    }     
    - (void)viewDidUnload {     
        // Release any retained subviews of the main view.     
        // e.g. self.myOutlet = nil;     
    }     
    - (void)dealloc {     
        [super dealloc];     
    }     
    @end  
    label中文字跑马灯效果
     
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 300, 100)];
        label.text = @"噜啦啦噜啦啦噜啦噜啦噜,噜啦噜啦噜啦噜啦噜啦噜~~~";
        [self.view addSubview:label];
        CGRect frame = label7.frame;
    frame.origin.x = -180;
    label.frame = frame;
    [UIView beginAnimations:@"testAnimation" context:NULL];
    [UIView setAnimationDuration:8.8f];  
    [UIView setAnimationCurve:UIViewAnimationCurveLinear]; 
    [UIView setAnimationDelegate:self];  
    [UIView setAnimationRepeatAutoreverses:NO];  
    [UIView setAnimationRepeatCount:999999]; 
    frame = label.frame;
    frame.origin.x = 350;
    label.frame = frame;
    [UIView commitAnimations]; 
  • 相关阅读:
    顺序链表的实现
    交换排序(冒泡排序与快速排序)
    插入排序及升级版希尔排序
    循环队列的顺序结构实现
    .NET资源泄露与处理方案
    获取某月第一天,最后一天的sql server脚本
    Oracle Net Manager 的使用方法(监听的配置方法)
    如果有人问你数据库原理,叫他看这篇文章
    如何统计一段时间内但不包含周六日的所有日期
    一个技术人的知识管理方法论
  • 原文地址:https://www.cnblogs.com/mrhgw/p/2570831.html
Copyright © 2011-2022 走看看