Usage of UILabel and UISlider in iPhone applications

IPhoneApplication in progressUILabelAndUISliderUsage is the content to be introduced in this article.UILabelAndUISliderTo implement a simple instance, Let's first look at the details. This afternoon.UILabelAndUISliderI learned something. I feel like I have forgotten it.

First.Add the following code to the file area of h:

Declare variables:

 
 

  
  
IBOutlet UILabel *lab;  
  
  
 IBOutlet UISlider *slid;  
  
  
 IBOutlet UITextField *txt;  
  
  
 IBOutlet UISlider *red;  
  
  
 IBOutlet UISlider *green;  
  
  
 IBOutlet UISlider *blue; 
 
 

Definition method:

 
 

  
  
-(IBAction)add;  
  
  
-(IBAction)addred;  
  
  
-(IBAction)addgreen;  
  
  
-(IBAction)addblue; 
 
 

Then in. The following method is added to the m file:

 
 

  
  
-(Void) viewDidLoad // initialization settings
  
  
{
  
  
Lab. text = @ "123456789"; // set the initial value of Lable.
  
  
Slid. minimumValue = 12; // set the bottom value of the font.
  
  
Slid. maximumValue = 50; // set the maximum font size.
  
  
Red. minimumValue = 0; // set the minimum value of Red to 0.
  
  
Red. maximumValue = 1; // set the maximum value of Red to 1.
  
  
Blue. minimumValue = 0; // set the minimum value of Blue to 0.
  
  
Blue. maximumValue = 1; // set the maximum value of Blue to 1.
  
  
Green. minimumValue = 0; // set the minimum value of Green to 0.
  
  
Green. maximumValue = 1; // set the maximum value of Green to 1.
  
  
[Lab setFont: [UIFont fontWithName: @ "DBLCDTempBlack" size: [slid value]; // initialize the font and size of the Label
  
  
[Super viewDidLoad];
  
  
}
  
  
-(Void) didReceiveMemoryWarning
  
  
{
  
  
[Super didReceiveMemoryWarning];
  
  
}
  
  
 
  
  
-(Void) add // control the font size
  
  
{
  
  
Int I = [slid value]; // obtain the UISlider value
  
  
[Lab setFont: [UIFont fontWithName: @ "DBLCDTempBlack" size: I]; // set the font and size of the Label.
  
  
Txt. text = [NSString stringWithFormat: @ "% d", I]; // get a TextField In the debugging phase to display the size.
  
  
}
  
  
-(IBAction) addred // set the Red value based on the UISlider Value
  
  
{
  
  
Float r = [red value];
  
  
Float g = [green value];
  
  
Float B = [blue value];
  
  
[Lab setTextColor: [UIColor colorWithRed: r green: g blue: B alpha: 1];
  
  
}
  
  
-(IBAction) addgreen
  
  
{
  
  
Float r = [red value];
  
  
Float g = [green value];
  
  
Float B = [blue value];
  
  
[Lab setTextColor: [UIColor colorWithRed: r green: g blue: B alpha: 1];
  
  
}
  
  
-(IBAction) addblue
  
  
{
  
  
Float r = [red value];
  
  
Float g = [green value];
  
  
Float B = [blue value];
  
  
[Lab setTextColor: [UIColor colorWithRed: r green: g blue: B alpha: 1];
  
  
}
  
  

  
  
-(Void) dealloc
  
  
{
  
  
[Lab release];
  
  
[Slid release];
  
  
[Red release];
  
  
[Blue release];
  
  
[Green release];
  
  
[Super dealloc];
  
  
}
 
 

Final:

Summary: DetailsIPhoneApplication in progressUILabelAndUISliderThe usage is complete. I hope this article will help you!