Zoom IN & Zoom OUT using a View in XCode

Description:

This code can be used to Zoom In & Zoom Out options for View.


.h File:


@interface Zooming : UIViewController
{
    IBOutlet UIScrollView *scrollView;
 
    IBOutlet UIView *viewer;
}
@end



.m File:


- (void)viewDidLoad
{
    [super viewDidLoad];
 
    UIButton *add = [[UIButton alloc]init];
    add.frame = CGRectMake(10, 10, 100, 100);
    [add setTitle:@"add" forState:UIControlStateNormal];
    add.backgroundColor = [UIColor brownColor];
 
    UIButton *delete = [[UIButton alloc]init];
    delete.frame = CGRectMake(200, 200, 100, 100);
    [delete setTitle:@"delete" forState:UIControlStateNormal];
    delete.titleLabel.textColor = [UIColor blackColor];
    delete.backgroundColor = [UIColor greenColor];
 
    viewer = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 1000, 1000)];
    [viewer addSubview:add];
    [viewer addSubview:delete];
 
    CGRect yFrame = CGRectMake(0.0, 0.0, 320, 410);
    scrollView = [[UIScrollView alloc] initWithFrame:yFrame];
    [scrollView setScrollEnabled:YES];
    [scrollView setBackgroundColor:[UIColor clearColor]];
    [scrollView setContentSize:CGSizeMake(1000, 1000)];
    scrollView.minimumZoomScale = 0.3;
    scrollView.maximumZoomScale = 2.0;
    scrollView.zoomScale = 0.3;
    [scrollView setZoomScale:scrollView.minimumZoomScale];
    scrollView.delegate = self;
    [scrollView addSubview:viewer];


    // For set a Zoom out the view
    //scrollView.zoomScale = 0.4;

 
    [self.view addSubview:scrollView];
    [self.view bringSubviewToFront:scrollView];
}

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
    return viewer;
}

Zoom IN & Zoom OUT using a Image in Xcode

Description:

This code can be used to Zoom In & Zoom Out options for images.


.h File:


@interface view : UIViewController
{
    IBOutlet UIScrollView *scrollView;
 
    IBOutlet UIImageView *imageView;
}
@end


.m File:


- (void)viewDidLoad
{
    [super viewDidLoad];
 
    UIImage *image = [UIImage imageNamed:@"demo.png"];
    imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, image.size.width, image.size.height)];
    [imageView setImage:image];
 
    CGRect yFrame = CGRectMake(0.0, 0.0, 320, 432);
    scrollView = [[UIScrollView alloc] initWithFrame:yFrame];
    [scrollView setScrollEnabled:YES];
    [scrollView setBackgroundColor:[UIColor blackColor]];
    [scrollView setContentSize:CGSizeMake(image.size.width, image.size.height)];
    scrollView.minimumZoomScale = 0.4;
    scrollView.maximumZoomScale = 4.0;
    [scrollView setZoomScale:scrollView.minimumZoomScale];
    scrollView.delegate = self;
    [scrollView addSubview:imageView];

    // For set a Zoom out the image
    //scrollView.zoomScale = 0.4;

    [self.view addSubview:scrollView];
    [self.view bringSubviewToFront:scrollView];  
}


- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
    return imageView;
}

Implement Code for Text file to Split the Values in XCode

  .h File:

        NSArray *state;

        NSArray *state;

        NSMutableArray *components;

  .m File:

     -(Void) ButtonCoding

     {

        NSString *Filename=@"StateList";

        NSString* path = [[NSBundle mainBundle] pathForResource:Filename

                                                         ofType:@"txt"];

        NSString* content = [NSString stringWithContentsOfFile:path

                                                      encoding:NSUTF8StringEncoding

                                                         error:NULL];

        

        NSArray *componet=[[NSMutableArray alloc]init];

        

        state=[[NSMutableArray alloc]init];

        

        componet = [content componentsSeparatedByString:@"|"];

        for(int k=0;k<[componet count]-1;k++)

        {

            NSString *name1 = [componet objectAtIndex:k];

            [state addObject:name1];

        }

        

        [table2 reloadData];

     }

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    if(tableView == self.tabel1) 

    {

        return 1;

    }

    else if(tableView == self.tabel2) 

    {

        return 1;

    }  

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

    #warning Incomplete method implementation.

    // Return the number of rows in the section.

    if (tableView == self.tabel1) 

    {

        return [city count];

    }

    

    else if (tableView == self.tabel2) 

    {

        return [state count];

    }

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

    static NSString *CellIdentifier = @"Cell";

    

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    }

    

    if(tableView == self.tabel1) 

    {

        NSString *cellValue1 = [city objectAtIndex:indexPath.row];

        cell.text = cellValue1;

    }

    else if(tableView == self.tabel2)

    {

        NSString *cellValue2 = [state objectAtIndex:indexPath.row];

        cell.text = cellValue2;

    }

    return cell;

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    if (tableView == self.tabel1) 

    {

        NSString *CitySelected = [city objectAtIndex:indexPath.row];

        txt1.text=CitySelected;

        tabel1.hidden=YES;

    }

    

    else if (tableView == self.tabel2) 

    {

        NSString *StateSelected = [state objectAtIndex:indexPath.row];

        txt2.text=StateSelected;

        tabel2.hidden=YES;

    }

}

Define and Move the Objects in Xcode

Step 1: Create a Project.

Step 2: Add the images into your project.

Step 3: In .h File Add the Codings are,

#import <UIKit/UIKit.h>

@interface Touchviewcontroller : UIViewController

{

    

}

-(IBAction)handlePan:(UIPanGestureRecognizer *)recognizer;

@end

Step 4: In .m File Add the Codings are,

-(IBAction)handlePan:(UIPanGestureRecognizer *)recognizer

{

    CGPoint translation = [recognizer translationInView:self.view];

    recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,

                                         recognizer.view.center.y + translation.y);

    [recognizer setTranslation:CGPointMake(0, 0) inView:self.view];

}

Step 5: In Xib File (Design)

  * Create a Image View  and  assign the image.

  * PanGestureRecognizer drag&drop to Image View.

  

  * FileOwner --> Outlets --> Map the handlePan to PanGestureRecognizer.

 

Step 7: Build and Run the application. You can Select and move objects.

Move the Objects in XCode (Programatically)

Step 1: Create a Project.

Step 2: Add the images into your project.

Step 3: In .h File Add the Codings are,

#import <UIKit/UIKit.h>

@interface Touchviewcontroller : UIViewController

{

    

}

-(IBAction)create_obj:(id)sender;

-(IBAction)handlePan:(UIPanGestureRecognizer *)recognizer;

@end

Step 4: In .m File Add the Codings are,

-(IBAction)create_obj:(id)sender

{

    UIImageView *img = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"arrow.png"]];

    img.frame=CGRectMake(arc4random()%298, arc4random()%448, 60, 60);

    [img setUserInteractionEnabled:YES];

    [self.view addSubview:img];

 
    //For ScrollView
    //[ScrollView addSubview:img];

    

    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePan:)];

    [panRecognizer setMinimumNumberOfTouches:1];

    [panRecognizer setMaximumNumberOfTouches:1];

    [img setUserInteractionEnabled:YES];

    [img addGestureRecognizer:panRecognizer];

    

}

-(IBAction)handlePan:(UIPanGestureRecognizer *)recognizer

{

    CGPoint translation = [recognizer translationInView:self.view];

    recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,

                                         recognizer.view.center.y + translation.y);

    [recognizer setTranslation:CGPointMake(0, 0) inView:self.view];

}

Step 5: In Xib File(Design)

Step 6: Map the Create_obj to CreateObjects BarButton

Step 7: Build and Run the application.

Before Clicking Create Objects Button

                                                                        After Clicking Create Objects Button 

                                         

Snapshot a View and Attach the image into Mail for Xcode

Add the Frameworks :   MessageUI.framework & QuartzCore.framework

.h File:

#import <QuartzCore/QuartzCore.h>

#import <MessageUI/MessageUI.h>

.m File:

-(void)Button

{

    

    myScrollView.backgroundColor= [UIColor colorWithPatternImage:[UIImage imageNamed:@"background123.png"]];

    

    UIImage *image;

    UIGraphicsBeginImageContext(myScrollView.contentSize);

    {

        CGPoint savedContentOffset = myScrollView.contentOffset;

        CGRect savedFrame = myScrollView.frame;

        myScrollView.contentOffset = CGPointZero;

        myScrollView.frame = CGRectMake(0, 0, myScrollView.contentSize.width,  myScrollView.contentSize.height);

        

        [myScrollView.layer renderInContext: UIGraphicsGetCurrentContext()];

        image = UIGraphicsGetImageFromCurrentImageContext();

        

        myScrollView.contentOffset = savedContentOffset;

        myScrollView.frame = savedFrame;

    }

    

    UIGraphicsEndImageContext();

   //Save Image to Local Library

    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

    

    //Attach a Email Process

    NSData * imageData = UIImageJPEGRepresentation(image, 1.0);

    

    

    if ( [MFMailComposeViewController canSendMail] ) 
    {

        MFMailComposeViewController *mailComposer = [[[MFMailComposeViewController alloc] init] autorelease];

       mailComposer.mailComposeDelegate = self;

        [mailComposer addAttachmentData:imageData mimeType:@"image/jpeg" fileName:@"SeatChart.jpg"];

        [mailComposer setSubject:@"Seating Chart"];

       

        

        /* Configure other settings */

        

        [self presentModalViewController:mailComposer animated:YES];

        //[mailComposer release];

    }

    else

    {

        UIAlertView* alert=[[UIAlertView alloc]initWithTitle:@"No Mail Accounts" message:@"Please set up a Mail account in order to send email." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

        [alert show];

    }   

}

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo

{

    UIAlertView *alert;

    if (error)

    {

        alert = [[UIAlertView alloc] initWithTitle:@"Error"

                                           message:@"Unable to save image to Photo Album."

                                          delegate:self cancelButtonTitle:@"Ok"

                                 otherButtonTitles:nil];

    }

    else

    {

        alert = [[UIAlertView alloc] initWithTitle:@"Success"

                                           message:@"Image saved to Photo Album."

                                          delegate:self cancelButtonTitle:@"Ok"

                                 otherButtonTitles:nil];

    }

    [alert show];

}

- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error

{

    UIAlertView *Alert;

    switch (result)

    {

        case MFMailComposeResultCancelled:

            NSLog(@"Mail cancelled");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Cancelled" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultSaved:

            NSLog(@"Mail saved");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultSent:

            NSLog(@"Mail sent");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Sent" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultFailed:

            NSLog(@"Mail sent failure: %@", [error localizedDescription]);

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Sending Failed" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        default:

            break;

    }

    

    // Close the Mail Interface

    [self dismissViewControllerAnimated:YES completion:NULL];

}

Snapshot a View and Attach the image into Mail (View Only) for Xcode

Add the Frameworks :   MessageUI.framework & QuartzCore.framework

.h File:

#import <QuartzCore/QuartzCore.h>

#import <MessageUI/MessageUI.h>

.m File:

-(void)Button

{

    

    myScrollView.backgroundColor= [UIColor colorWithPatternImage:[UIImage imageNamed:@"background123.png"]];

    

    UIGraphicsBeginImageContext(self.view.frame.size);

    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage * image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    

    //Save Image to Local Library

    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

    

    //Attach a Email Process

    UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);

    

    NSData * imageData = UIImageJPEGRepresentation(image, 1.0);

    

    

    if ( [MFMailComposeViewController canSendMail] ) 

    {

        MFMailComposeViewController *mailComposer = [[[MFMailComposeViewController alloc] init] autorelease];

       mailComposer.mailComposeDelegate = self;

        [mailComposer addAttachmentData:imageData mimeType:@"image/jpeg" fileName:@"SeatChart.jpg"];

        [mailComposer setSubject:@"Seating Chart"];

       

        

        /* Configure other settings */

        

        [self presentModalViewController:mailComposer animated:YES];

        //[mailComposer release];

    }   

}

- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo

{

    UIAlertView *alert;

    if (error)

    {

        alert = [[UIAlertView alloc] initWithTitle:@"Error"

                                           message:@"Unable to save image to Photo Album."

                                          delegate:self cancelButtonTitle:@"Ok"

                                 otherButtonTitles:nil];

    }

    else

    {

        alert = [[UIAlertView alloc] initWithTitle:@"Success"

                                           message:@"Image saved to Photo Album."

                                          delegate:self cancelButtonTitle:@"Ok"

                                 otherButtonTitles:nil];

    }

    [alert show];

}

- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error

{

    UIAlertView *Alert;

    switch (result)

    {

        case MFMailComposeResultCancelled:

            NSLog(@"Mail cancelled");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Cancelled" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultSaved:

            NSLog(@"Mail saved");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultSent:

            NSLog(@"Mail sent");

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Sent" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        case MFMailComposeResultFailed:

            NSLog(@"Mail sent failure: %@", [error localizedDescription]);

            Alert = [[UIAlertView alloc]initWithTitle:@"Message" message:@"E-Mail Sending Failed" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

            [Alert show];

            break;

        default:

            break;

    }

    

    // Close the Mail Interface

    [self dismissViewControllerAnimated:YES completion:NULL];

}