Common UI controls and ui controls

Common UI controls and ui controls

// Create a warning box object

UIAlertView * alertView = [[UIAlertView alloc] initWithTitle: @ "warning! "Message: @" are you sure you want to exit? "Delegate: self cancelButtonTitle: @" cancel "otherButtonTitles: @" OK ", @" continue ", @" View ", nil];

// Display the warning box

[AlertView show];

 

// Comply with the UIAlertViewDelegate protocol in. h and implement the method in the Protocol

-(Void) alertView :( UIAlertView *) alertView clickedButtonAtIndex :( NSInteger) buttonIndex

{

// The buttonIndex parameter can be used to identify the button to be clicked.

NSLog (@ "% I", buttonIndex );

}

(2)

// Create an ActionSheet object

UIActionSheet * actionSheet = [[UIActionSheet alloc] initWithTitle: nil delegate: self cancelButtonTitle: @ "cancel" destructiveButtonTitle: @ "delete image" otherButtonTitle: nil, nil];

// Add to self. view

[ActionSheet showInView: self. view];

// You also need to observe the methods in the. h file in the UIActionSheetDelegate protocol implementation protocol

-(Void) actionSheet :( UIActionSheet *) actionSheet clickedButtonAtIndex :( NSInteger) buttonIndex

{

NSLog (@ "% I", buttonIndex );

}

(3)

// Create a step object

UIStepper * stp = [[UIStepper alloc] initWithFrame: CGRectMake (100,100,100, 0)

[Self. view addSubview: stp];

// Set the maximum and minimum values of the stepper.

Stp. maximumValue = 10;

Stp. minimumValue = 0;

// Set the default step range to one

Stp. stepValue = 2;

[Stp addTarget: self action: @ selector (stpClick :) forControlEvents: UIControlEventValueChanged];

// Create a progress bar object

// The maximum and minimum values cannot be set for the progress.

// The value range of the progress bar is 0 ~ 1

UIProgressView * p = [[UIProgressView alloc] initWithFrame: CGRectMake (10,150,300, 10)];

P. tag= 200;

[Self. view addSubview: p];

// P. progress sets the progress bar

 

(4)

NSArray * arr = @ [@ "menu", @ "Shopping Cart", @ "checkout", @ "unit price"];

UISegmentedCotrol * seg = [[UISegmentControl alloc] initWithItems: arr];

[Self. view addSubview: seg];

Seg. frame = CGRectMake (100,100,200, 30 );

// Set the default position

Seg. selectedSegmentIndex = 1;

// Add a button to the segment Control

[Seg insertSegmentWithTitle: @ "quantity" atIndex = 1 animated: YES];

// Add an event to the segment Control

[Seg addTarget: self action: @ selector (segChange :) forControlEvents: UIControlEventValueChanged];

-(Void) segChange :( UISegmentedControl *) sg

{

NSLog (@ "% I", sg. selectedSegmentIndex );;

}

(5)

UISlider * slider = [[UISlider alloc] initWithFrame: CGRectMake (10,200,300, 30)];

[Self. view addSubview: slider];

// Sets the maximum value of a row.

Slider. maximumValue = 50;

// Set the minimum value of a row

Slider. minimunValue = 0;

// Add a slide event to the stroke

[Slider addTarget: self action: @ selector (sliderChange :) forControlEvents: UIControlEventValueChanged];

// Call the method after sliding ends

Slider. continuous = NO;

// Set the slider color on both sides

Slider. minimumTrackTintColor = [UIColor redColor];

Slider. maxmumTrackTintColor = [UIColor blueColor];

// Set the slide between left and right images

Slider. maximumValueImage = [UIImage imageNamed: @ "B .png"];

Slider. minimumValueImage = [UIImage imageNamed: @ "a.png"];

-(Void) sliderChange :( UISlider *) s

{

NSLog (@ "% f", s. value );

}

 

(6)

// Create a switch control object

UISwitch * sw = [[UISwitch alloc] initWithFrame: CGRectMake (100,100, 0 );

[Self. view addSubview: sw];

// Set whether the switch is on.

[Sw setOn: YES];

[Sw addTarget: self action: @ selector (swChange :) forControlEvents: UIControlEventValueChanged];

 

// Create a UIActivityIndicatorView object for network loading

UIActivityIndicatorView * act = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle: UIActivityIndicatorViewStyleWhite];

Act. frame = CGRectMake (100,150,100,100 );

[Self. view addSubview: act];

Act. tag = 100;

// Start loading

[Act startAnimating];

 

 

-(Void) swChange :( UISwitch *) sw

{

UIActivityIndicatorView * act = (UIActivityIndicatorView *) [self. view viewWithTag: 100];

If (sw. isOn ){

[Act startAnimating];

NSLog (@ "on ");

}

Else

{

// Stop loading

[Act stopAnimating];

NSLog (@ "off ");

}

}

(7)

// Create a webpage to load the control object

UIWebView * webView = [[UIWebView alloc] initWithFrame: CGRectMake (20,90, 220,220)];

WebView. backgroundColor = [UIColor redColor];

[Self. view addSubview: webView];

WebView. tag = 200;

 

 

-(Void) btnClick :( UIButton *) bt

{
// Obtain the text box object

UITextField * textField = (UITextField *) [self. view viewWithTag: 100];

// Obtain the URL in the text box

NSString * strURL = textField. text;

// Obtain the webView object

UIWebView * webView = (UIWebView *) [self. view viewWithTag: 200];

NSURL * url = [NSURL URLWithString: strURL];

// Encapsulate the network request class

NSURLRequest * request = [[NSURLRequest alloc] initWithURL: url];

// Load network requests

[WebView loadRequest: request];

}