Question

I would like to have an app that when i enter a numerous of data in the some of the Table cells. Then all the data will be summarised at the lowest table cell. (Which i have already done that).

My question is how can i specifically export the lowest or any specific table cell into a PNG formate as an image?

I have tried using print screen but it is not that nice and varies amount devices. Is there any code that i can only export that cell?

Thanks

Answer 1

// Specify your index path
NSUInteger index[] = {0, 1}; // section, row
NSIndexPath *indexPath = [[NSIndexPath alloc] initWithIndexes:index length:2];

// Get the cell
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];

// Render a graphics context to turn your cell into a UIImage
CGSize imageSize = cell.bounds.size;
UIGraphicsBeginImageContext(imageSize);
CGContextRef imageContext = UIGraphicsGetCurrentContext();
[cell.layer renderInContext:imageContext];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

// Save the image as PNG
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex:0];
NSString *dest = [docDir stringByAppendingPathComponent:@"image.png"];
[UIImagePNGRepresentation(image) writeToFile:dest atomically:YES];

EDIT

To get a more precise snapshot of the cell, you could use the contentView property of the cell, i.e.

[cell.contentView.layer renderInContext:imageContext];