UILabel的各類屬性與方法的使用［轉］

時間 2019-11-12

標籤 uilabel 各類屬性方法使用简体版

原文原文鏈接

  1 #import "LabelTestViewController.h"   
  2 @implementation LabelTestViewController   
  3 /*  
  4 Accessing the Text Attributes  
  5     text  property    
  6     font  property    
  7     textColor  property    
  8     textAlignment  property    
  9     lineBreakMode  property      
 10     enabled  property    
 11 Sizing the Label’s Text  
 12     adjustsFontSizeToFitWidth  property    
 13     baselineAdjustment  property    
 14     minimumFontSize  property   無例  
 15     numberOfLines  property    
 16 Managing Highlight Values  
 17     highlightedTextColor  property    
 18     highlighted  property    
 19 Drawing a Shadow  
 20     shadowColor  property    
 21     shadowOffset  property    
 22 Drawing and Positioning Overrides  
 23     – textRectForBounds:limitedToNumberOfLines: 無例   
 24     – drawTextInRect:  無例  
 25 Setting and Getting Attributes  
 26     userInteractionEnabled  property    
 27 */  
 28 
 29 // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.   
 30 - (void)viewDidLoad {   
 31     UILabel *label1 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 20.0, 200.0, 50.0)];   
 32     UILabel *label2 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 80.0, 200.0, 50.0)];   
 33     UILabel *label3 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 140.0, 200.0, 50.0)];   
 34     UILabel *label4 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 200.0, 200.0, 50.0)];   
 35     UILabel *label5 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 260.0, 200.0, 50.0)];   
 36     UILabel *label6 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 320.0, 200.0, 50.0)];   
 37     UILabel *label7 = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 380.0, 200.0, 50.0)];   
 38 
 39     //設置顯示文字   
 40     label1.text = @"label1";   
 41     label2.text = @"label2";   
 42     label3.text = @"label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--label3--";   
 43     label4.text = @"label4--label4--label4--label4--";   
 44     label5.text = @"label5--label5--label5--label5--label5--label5--";   
 45     label6.text = @"label6";   
 46     label7.text = @"label7";   
 47 
 48     //設置字體   
 49     label1.font = [UIFont boldSystemFontOfSize:20];   
 50 
 51     //設置文字顏色   
 52     label1.textColor = [UIColor orangeColor];   
 53     label2.textColor = [UIColor purpleColor];   
 54 
 55     //設置文字位置   
 56     label1.textAlignment = UITextAlignmentRight;   
 57     label2.textAlignment = UITextAlignmentCenter;   
 58     //設置字體大小適應label寬度   
 59     label4.adjustsFontSizeToFitWidth = YES;   
 60 
 61     //設置label的行數   
 62     label5.numberOfLines = 2;   
 63 
 64     //設置高亮   
 65     label6.highlighted = YES;   
 66     label6.highlightedTextColor = [UIColor orangeColor];   
 67 
 68     //設置陰影   
 69     label7.shadowColor = [UIColor redColor];   
 70     label7.shadowOffset = CGSizeMake(1.0,1.0);   
 71 
 72     //設置是否能與用戶進行交互   
 73     label7.userInteractionEnabled = YES;   
 74 
 75     //設置label中的文字是否可變，默認值是YES   
 76     label3.enabled = NO;   
 77 
 78     //設置文字過長時的顯示格式   
 79     label3.lineBreakMode = UILineBreakModeMiddleTruncation;//截去中間   
 80 //  typedef enum {   
 81 //      UILineBreakModeWordWrap = 0,   
 82 //      UILineBreakModeCharacterWrap,   
 83 //      UILineBreakModeClip,//截去多餘部分   
 84 //      UILineBreakModeHeadTruncation,//截去頭部   
 85 //      UILineBreakModeTailTruncation,//截去尾部   
 86 //      UILineBreakModeMiddleTruncation,//截去中間   
 87 //  } UILineBreakMode;   
 88 
 89     //若是adjustsFontSizeToFitWidth屬性設置爲YES，這個屬性就來控制文本基線的行爲   
 90     label4.baselineAdjustment = UIBaselineAdjustmentNone;   
 91 //  typedef enum {   
 92 //      UIBaselineAdjustmentAlignBaselines,   
 93 //      UIBaselineAdjustmentAlignCenters,   
 94 //      UIBaselineAdjustmentNone,   
 95 //  } UIBaselineAdjustment;   
 96 
 97 
 98     [self.view addSubview:label1];   
 99     [self.view addSubview:label2];   
100     [self.view addSubview:label3];   
101     [self.view addSubview:label4];   
102     [self.view addSubview:label5];   
103     [self.view addSubview:label6];   
104     [self.view addSubview:label7];   
105 
106     [label1 release];   
107     [label2 release];   
108     [label3 release];   
109     [label4 release];   
110     [label5 release];   
111     [label6 release];   
112     [label7 release];   
113 
114     [super viewDidLoad];   
115 }   
116 
117 /*  
118 // Override to allow orientations other than the default portrait orientation.  
119 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {  
120     // Return YES for supported orientations  
121     return (interfaceOrientation == UIInterfaceOrientationPortrait);  
122 }  
123 */  
124 - (void)didReceiveMemoryWarning {   
125     // Releases the view if it doesn't have a superview.   
126     [super didReceiveMemoryWarning];   
127 
128     // Release any cached data, images, etc that aren't in use.   
129 }   
130 - (void)viewDidUnload {   
131     // Release any retained subviews of the main view.   
132     // e.g. self.myOutlet = nil;   
133 }   
134 
135 - (void)dealloc {   
136     [super dealloc];   
137 }   
138 @end