UILabel的各种属性和方法

转自：http://liulu200888an.blog.163.com/blog/static/3498972320121214208542/

UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(20.0, 20.0, 180.0,50.0)];

UILabel *label2 = [[UILabel alloc]initWithFrame:CGRectMake(20.0, 80.0, 180.0, 50.0)];

UILabel *label3 = [[UILabel alloc]initWithFrame:CGRectMake(20.0, 140.0, 180.0, 50.0)];

UILabel *label4 = [[UILabel alloc]initWithFrame:CGRectMake(20.0, 200.0, 180.0, 50.0)];

//设置显示文字

label1.text = @"labelone";

label2.text = @"labeltwo";

label3.text = @"labelthree-labelthree-labelthree-labelthree-labelthree-labelthree";

label4.text = @"labelfour";

//设置文字颜色

label1.textColor = [UIColor redColor];

label2.textColor = [UIColor blueColor];

//设置字体:粗体，正常的是 SystemFontOfSize

label1.font = [UIFont boldSystemFontOfSize:30];

//设置文字位置,居中还是靠左靠右

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

label3.numberOfLines = 2;

//设置label的背景为透明

label2.backgroundColor = [UIColor clearColor];

//设置高亮

label4.highlighted = YES;

label4.highlightedTextColor = [UIColor orangeColor];

//设置阴影

label1.shadowColor = [UIColor redColor];

label1.shadowOffset = CGSizeMake(1.0,1.0);

//设置是否能与用户进行交互

label3.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];

[label1 release];

[label2 release];

[label3 release];

[label4 release];

//点击label1时显示白色(是点击label1,不是点击label.Text)

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

[label1 setTextColor:[UIColor whiteColor]];

}

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

[label1 setTextColor:[UIColor blackColor]];

UITouch *touch = [touches anyObject];

// CGPoint points = [touch locationInView:<#(UIView *)#>];

CGPoint points = [touch locationInView:label];

if (points.x >= label.frame.origin.x && points.y >= label.frame.origin.x && points.x <= label.frame.size.width && points.y <= label.frame.size.height)

{

// [delegate myLabel:self touchesWtihTag:self.tag];

}

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UILabel的各种属性和方法

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