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];