Save to Iphone images

[dany_dev]

use private messages, click on my name on the left and "Send a private message..."... I will try to take a look to the project and post the solution.

[dany_dev]

First to show the solution, some things about your code and warnings

1- warning: local declaration of 'slider' hides instance variable

you declared in your .h
IBOutlet UISlider *slider;

then in your .m you have something like

- (IBAction)hueValueChanged:(id)sender {
    
    UISlider *slider = (UISlider *)sender;
    _button.hue = slider.value;
    
}

This generate a warning because you inside that method have used the same name to identificate something that can be different, so the solution to solve these warnings are just to use another name inside the method that is not equal to your instance variable, like

- (IBAction)hueValueChanged:(id)sender {
    
    UISlider *sliderIntern = (UISlider *)sender;
    _button.hue = sliderIntern.value;
    
}

2- warning: class 'CoolButtonViewController' does not implement the 'UITextFieldDelegate' protocol

you just need to implement the delegate on your .h

@interface CoolButtonViewController : UIViewController <UITextFieldDelegate>{

...

}

3- warning: no '-renderInContext:' method found

you just need to import in your .m where use this function:

#import <QuartzCore/CALayer.h>

ok, now the problem.

you wrote on your viewcontroller.m

- (void)viewDidLoad {
    [super viewDidLoad];
	field.delegate = self;
    
    UIView *viewTmp =  [[UIView alloc] initWithFrame:CGRectMake(46, 61, 226, 46)];
    self.myView = viewTmp;
    [viewTmp release];

    _button.center = CGPointMake(120,40);
    label.center = CGPointMake(120,40);

    
    
    [myView addSubview:_button];
    [myView addSubview:label];
    [self.view addSubview:myView];
	
}

but you need something like

- (void)viewDidLoad {
    [super viewDidLoad];
	field.delegate = self;
    
    UIView *viewTmp =  [[UIView alloc] initWithFrame:CGRectMake(0, 0, _button.frame.size.width, _button.frame.size.height)];
    self.myView = viewTmp;
    [viewTmp release];
   
    
    [myView addSubview:_button];
    [myView addSubview:label];
    [self.view addSubview:myView];
	
     _button.center = CGPointMake(myView.center.x,myView.center.y);
     label.center = CGPointMake(myView.center.x,myView.center.y);
	
	myView.center =  CGPointMake(self.view.center.x,80); //change this to change your button+label position
	
	
}

the problem was that writing as you have done, you was making a uiview in another position and button doesn't have the same center, so when you go to do a screen of the view, you have just a piece of the button+label

[sacha1996]

Wow !
You are amazing !
Thanks to you its now al right !
I really thank you 1000000000 times.

Best Wishes ,
Sacha

Thankyou !!!

[sacha1996]

@Dany_dev.
Hi ,
The button saves under the name button.png into the device. So you can only save it once or it will be overwritten.
Is there a way to make it save as button1.png and the second one button2.png etc. ?

- (void) saveImageToFile: (NSString *) filePath {
	UIGraphicsBeginImageContext(self.myView.frame.size);
	CGContextRef theContext = UIGraphicsGetCurrentContext();
	[self.myView.layer renderInContext:theContext];
	
	CGRect overDrawRects[] = {CGRectMake(10, 0, 1, _button.frame.size.height), CGRectMake(_button.frame.size.width - 11, 0, 1, _button.frame.size.height)};
	
	[[UIColor clearColor] set];
	
	for (int i = 0; i < 2; i++) {
		UIRectFill(overDrawRects[i]);
		CGContextSaveGState(theContext);
		CGContextClipToRect(theContext, overDrawRects[i]);
		CGContextTranslateCTM(theContext, -1, 0);
		[_button.layer renderInContext:theContext];
		CGContextRestoreGState(theContext);
	}
	
	UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
	NSData *theData = UIImagePNGRepresentation(theImage);
	[theData writeToFile: filePath atomically:NO];
	UIGraphicsEndImageContext();	
}

-(IBAction) saveTapped:(id)sender {
	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
	NSString *documentsDirectory = [paths objectAtIndex:0];
	
	// the path to write file
	NSString *buttonFile = [documentsDirectory stringByAppendingPathComponent:@"button%i.png"];
	
	[self saveImageToFile: buttonFile];
	
	
	
	[_button setHighlighted:YES];
	
	
	NSString *msg = [NSString stringWithFormat:@"Wrote files to %@", documentsDirectory];
	UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:@"Done" message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
	[alertView show];
}

[dany_dev]

ask to user the name that he like to use...

or in alternative you can do a while where check for a non-existing file.

BOOL fileExists = YES;
int number = 0;
NSString *buttonFilePath;

while(fileExists == YES){
        NSString *fileName = [NSString stringWithFormat:@"button%d.png",number];
	buttonFilePath = [documentsDirectory stringByAppendingPathComponent:fileName];
        fileExists = [[NSFileManager defaultManager] fileExistsAtPath:buttonFilePath];
        number++;
}

[sacha1996]

Originally Posted by dany_dev

ask to user the name that he like to use...

or in alternative you can do a while where check

BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:somePath];

Thankyou
I want to ask the user the name he wants , are there any tutorial for this ?
I don't find it on Google

[dany_dev]

Originally Posted by sacha1996

Thankyou
I want to ask the user the name he wants , are there any tutorial for this ?
I don't find it on Google

you need only a uitextfield.....

for have a good UI, you can add to your UIAlertview....google UIAlertView UITextField

cocoa touch - Showing a alertview with a textbox in iPhone - Stack Overflow

[sacha1996]

Originally Posted by dany_dev

ask to user the name that he like to use...

or in alternative you can do a while where check for a non-existing file.

BOOL fileExists = YES;
int number = 0;
NSString *buttonFilePath;

while(fileExists == YES){
        NSString *fileName = [NSString stringWithFormat:@"button%d.png",number];
	buttonFilePath = [documentsDirectory stringByAppendingPathComponent:fileName];
        fileExists = [[NSFileManager defaultManager] fileExistsAtPath:buttonFilePath];
        number++;
}

Hi , the user can choose the name thing is to difficult.
So I tried the code you gave me :

-(IBAction) saveTapped:(id)sender {
	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
	NSString *documentsDirectory = [paths objectAtIndex:0];
	
	// the path to write file
	NSString *buttonFile = [documentsDirectory stringByAppendingPathComponent:@"button.png"];
    
    BOOL fileExists = YES;
    int number = 0;
    NSString *buttonFilePath;
    
    while(fileExists == YES){
        NSString *fileName = [NSString stringWithFormat:@"button%d.png",number];
        buttonFilePath = [documentsDirectory stringByAppendingPathComponent:fileName];
        fileExists = [[NSFileManager defaultManager] fileExistsAtPath:buttonFilePath];
        number++;
    }
	
	[self saveImageToFile: buttonFile];
	
	
	
	[_button setHighlighted:YES];
	
	
	NSString *msg = [NSString stringWithFormat:@"Wrote files to %@", documentsDirectory];
	UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:@"Done" message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
	[alertView show];
}

And it still saves in button.png and I make another one and it rewrittes the button.png on the same name.
)That's in the simulator , I don't know but maybe that changes something)

[dany_dev]

	[self saveImageToFile: buttonFilePath];

[sacha1996]

Originally Posted by dany_dev

	[self saveImageToFile: buttonFilePath];

Thanks it worked !

[sacha1996]

Hi, I tried it on my ipod touch and when I save it says :
"wrote files to var/mobile/Applications/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/Documents"
In real there is written a whole text with numbers and letters where I placed the all the x.

Why is is not saving into the the ipod camera roll in the photos app ?
Thankyou

[dany_dev]

because you wrote the code to save the file on your documents directory...

to save to camera roll

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

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

[sacha1996]

Thanks ,
But I'm quite an neewbie and I'm still learning and that's why I doesn't understand what you mean. What do I have to change to the currenct code ?

- (void) saveImageToFile: (NSString *) filePath {
	UIGraphicsBeginImageContext(self.myView.frame.size);
	CGContextRef theContext = UIGraphicsGetCurrentContext();
	[self.myView.layer renderInContext:theContext];
    
	
	CGRect overDrawRects[] = {CGRectMake(10, 0, 1, _button.frame.size.height), CGRectMake(_button.frame.size.width - 11, 0, 1, _button.frame.size.height)};
	
	[[UIColor clearColor] set];
	
	for (int i = 0; i < 2; i++) {
		UIRectFill(overDrawRects[i]);
		CGContextSaveGState(theContext);
		CGContextClipToRect(theContext, overDrawRects[i]);
		CGContextTranslateCTM(theContext, -1, 0);
		[_button.layer renderInContext:theContext];
		CGContextRestoreGState(theContext);
	}
	
	UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
	NSData *theData = UIImagePNGRepresentation(theImage);
	[theData writeToFile: filePath atomically:NO];
	UIGraphicsEndImageContext();	
}

-(IBAction) saveTapped:(id)sender {
	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
	NSString *documentsDirectory = [paths objectAtIndex:0];
	
	// the path to write file
	NSString *buttonFile = [documentsDirectory stringByAppendingPathComponent:@"button.png"];
    
    BOOL fileExists = YES;
    int number = 0;
    NSString *buttonFilePath;
    
    while(fileExists == YES){
        NSString *fileName = [NSString stringWithFormat:@"button%d.png",number];
        buttonFilePath = [documentsDirectory stringByAppendingPathComponent:fileName];
        fileExists = [[NSFileManager defaultManager] fileExistsAtPath:buttonFilePath];
        number++;
    }
	
	[self saveImageToFile: buttonFilePath];
	
	
	
	[_button setHighlighted:YES];
	
	
	NSString *msg = [NSString stringWithFormat:@"Wrote files to %@", documentsDirectory];
	UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:@"Done" message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
	[alertView show];
}

[dany_dev]

UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
UIImageWriteToSavedPhotosAlbum(theImage , self, nil, nil);

[sacha1996]

Originally Posted by dany_dev

UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
UIImageWriteToSavedPhotosAlbum(theImage , self, nil, nil);

But does this saves the two layers as the previous one ? (layer button + label) ?

[dany_dev]

why you ask and don't try it yourself?

[sacha1996]

Originally Posted by dany_dev

why you ask and don't try it yourself?

You're right , but the problem is it isn't working ...

Code :

- (void) saveImageToFile: (NSString *) filePath {
	UIGraphicsBeginImageContext(self.myView.frame.size);
	CGContextRef theContext = UIGraphicsGetCurrentContext();
	[self.myView.layer renderInContext:theContext];
    
	
	CGRect overDrawRects[] = {CGRectMake(10, 0, 1, _button.frame.size.height), CGRectMake(_button.frame.size.width - 11, 0, 1, _button.frame.size.height)};
	
	[[UIColor clearColor] set];
	
	for (int i = 0; i < 2; i++) {
		UIRectFill(overDrawRects[i]);
		CGContextSaveGState(theContext);
		CGContextClipToRect(theContext, overDrawRects[i]);
		CGContextTranslateCTM(theContext, -1, 0);
		[_button.layer renderInContext:theContext];
		CGContextRestoreGState(theContext);
	}
	
	UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
	NSData *theData = UIImagePNGRepresentation(theImage);
	[theData writeToFile: filePath atomically:NO];
	UIGraphicsEndImageContext();	
}

-(IBAction) saveTapped:(id)sender {
    
    UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
    UIImageWriteToSavedPhotosAlbum(theImage , self, nil, nil);
	
	NSString *msg = [NSString stringWithFormat:@"Wrote files to %@", theImage];
	UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:@"Done" message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];
	[alertView show];
}

[dany_dev]

i think you need to understand what you code, is meaningless that I write for you the code.....

hint: you need to do the same things that you do when you save your image (except save it to disk)

[sacha1996]

Originally Posted by dany_dev

i think you need to understand what you code, is meaningless that I write for you the code.....

hint: you need to do the same things that you do when you save your image (except save it to disk)

Thanks , but I tried all to have to good code.
I really don't understand what I have to change
Could you please just change the code en share it on this post for the last time.
After that , I will no more ask questions about this thread
Thankyou !

[dany_dev]

- (void) saveImageToFile: (NSString *) filePath {
	UIGraphicsBeginImageContext(self.myView.frame.size);
	CGContextRef theContext = UIGraphicsGetCurrentContext();
	[self.myView.layer renderInContext:theContext];
    
	
	CGRect overDrawRects[] = {CGRectMake(10, 0, 1, _button.frame.size.height), CGRectMake(_button.frame.size.width - 11, 0, 1, _button.frame.size.height)};
	
	[[UIColor clearColor] set];
	
	for (int i = 0; i < 2; i++) {
		UIRectFill(overDrawRects[i]);
		CGContextSaveGState(theContext);
		CGContextClipToRect(theContext, overDrawRects[i]);
		CGContextTranslateCTM(theContext, -1, 0);
		[_button.layer renderInContext:theContext];
		CGContextRestoreGState(theContext);
	}
	
	UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext();
 
        UIImageWriteToSavedPhotosAlbum(yourUImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);


	
	NSData *theData = UIImagePNGRepresentation(theImage);
	[theData writeToFile: filePath atomically:NO];
	UIGraphicsEndImageContext();	
}

  - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error 
             contextInfo:(void *)contextInfo
  {
   NSLog(@"Error didFinishSavingWithError");
  }

[sacha1996]

Thankyou !