XCode中動態添加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 
{
    //事件處理。
}

 

 

#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   無例   
 numberOfLines  property     
 Managing Highlight Values   
 highlightedTextColor  property     
 highlighted  property     
 Drawing a Shadow   
 shadowColor  property     
 shadowOffset  property     
 Drawing and Positioning Overrides   
 – textRectForBounds:limitedToNumberOfLines: 無例    
 – drawTextInRect:  無例   
 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)];     
    //設置顯示文字     
    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";     
    //設置字體:粗體，正常的是 SystemFontOfSize     
    label1.font = [UIFont boldSystemFontOfSize:20];     
    //設置文字顏色  
    label1.textColor = [UIColor orangeColor];     
    label2.textColor = [UIColor purpleColor];     
    //設置文字位置     
    label1.textAlignment = UITextAlignmentRight;     
    label2.textAlignment = UITextAlignmentCenter;     
    //設置字體大小適應label寬度     
    label4.adjustsFontSizeToFitWidth = YES;     
  
    //設置label的行數     
    label5.numberOfLines = 2;    
    UIlabel.backgroudColor=[UIColor clearColor]; //可以去掉背景色   
 
    //設置高亮     
    label6.highlighted = YES;     
    label6.highlightedTextColor = [UIColor orangeColor];     
    //設置陰影     
    label7.shadowColor = [UIColor redColor];     
    label7.shadowOffset = CGSizeMake(1.0,1.0);     
    //設置是否能與用戶進行交互     
    label7.userInteractionEnabled = YES;     
    //設置label中的文字是否可變，默認值是YES     
    label3.enabled = NO;     
    //設置文字過長時的顯示格式     
    label3.lineBreakMode = UILineBreakModeMiddleTruncation;//截去中間     
//  typedef enum {     
//      UILineBreakModeWordWrap = 0,     
//      UILineBreakModeCharacterWrap,     
//      UILineBreakModeClip,//截去多余部分     
//      UILineBreakModeHeadTruncation,//截去頭部     
//      UILineBreakModeTailTruncation,//截去尾部     
//      UILineBreakModeMiddleTruncation,//截去中間     
//  } UILineBreakMode;     
    //如果adjustsFontSizeToFitWidth屬性設置為YES，這個屬性就來控制文本基線的行為     
    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中文字跑馬燈效果
 
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 300, 100)];
    label.text = @"嚕啦啦嚕啦啦嚕啦嚕啦嚕，嚕啦嚕啦嚕啦嚕啦嚕啦嚕~~~";
    [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];