Copy UIImage to clipboard on tap - uiimage

I've got a UICollectionView which displays as many cells as the amount of images passed through.
I want to make it so that when you tap an image, it copies that image to the clipboard.
Any help would be greatly appreciated.
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
CollectionViewCell *Cell = [collectionView
dequeueReusableCellWithReuseIdentifier:#"ImagesCell"
forIndexPath:indexPath];
UIImage *image;
int row = indexPath.row;
//set image of this cell
image = [UIImage imageNamed:localImages.imageFiles[row]];
Cell.imageCell.image = image;
//enable touch
[Cell.imageCell setUserInteractionEnabled:YES];
Cell.imageCell.tag = row;
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapGestureRecognizer:)];
[tapGesture setNumberOfTapsRequired:1];
[Cell.imageCell addGestureRecognizer:tapGesture];
return Cell;
}
- (void)tapGestureRecognizer:(UITapGestureRecognizer *)sender
{
NSInteger string = (sender.view.tag);
NSLog(#"this is image %i",string);
UIImage *copiedImage = I don't know what to put here..
[[UIPasteboard generalPasteboard] setImage:copiedImage];
}

It's actually easier if you just implement the delegate method of UICollectionView - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath and just do this:
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
CollectionViewCell *cell = (CollectionViewCell *)[collectionView cellForItemAtIndexPath:indexPath];
UIImage *copiedImage = cell.imageCell.image;
[[UIPasteboard generalPasteboard] setImage:copiedImage];
}
Hope this helped you out!
Edit: In case you have different type of cells with images and text and you only want to enable copying under images, you will have to implement that UITapGestureRecognizer part and in the method called you just need to do this:
- (void)tapGestureRecognizer:(UITapGestureRecognizer *)sender
{
UIImageView *imageView = (UIImageView *)sender.view;
UIImage *copiedImage = imageView.image;
[[UIPasteboard generalPasteboard] setImage:copiedImage];
}
Since your UITapGestureRecognizer is attached to the UIImageView, it is the sending view and you can extract the image directly from it and copy to the pasteboard.

Related

UicollectionView on scroll shows duplicate images

I was using UICollectionView for Images grid appearance.while scrolling i found duplicate images appearing there. I was using NYXProgressiveImageView for downloading and displaying images. I Have implemented several methods found on search..
This is my code
- (MyCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
MyCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"CELL" forIndexPath:indexPath];
if (cell == nil)
{
cell = [[MyCell alloc]init];
[cell.imgv setImage:nil];
}
NSMutableDictionary *d=[[NSMutableDictionary alloc]initWithDictionary:[arrSubCatAndItems objectAtIndex:indexPath.item]];
[cell.imgv setImage:nil];
cell.imgv.cakeIndex=indexPath.item;
cell.cellLabel.text = [d objectForKey:#"Name"];
return cell;
}
Where as Mycell is Custom UICollectionViewCell class having ImageView and label init
On scrolling iam loading visible images like this
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
_isDragging=NO;
if (!decelerate)
{
_isDragging=YES;
[self loadimages];
}
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
CGPoint contentOffset = testscroll.contentOffset;
CGRect contentFrame = testscroll.bounds;
contentFrame.origin = contentOffset;
if(!_isDragging)
[self loadimages];
}
-(void)loadimages
{
for (UICollectionViewCell *cell in [collectionview visibleCells]) {
NSIndexPath *indexPath = [collectionview indexPathForCell:cell];
MyCell *cell1 = (MyCell*)[collectionview cellForItemAtIndexPath:indexPath];
NSMutableDictionary *d=[[NSMutableDictionary alloc]initWithDictionary:[arrSubCatAndItems objectAtIndex:indexPath.item]];
[cell1.imgv loadImageAtURL:[NSURL URLWithString:[[d objectForKey:#"ImageUrl"]stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
}
}
Main problem if i scroll collection view on loading image in Imageview it is appearing in below cells
I don't Know where I am going wrong....New to UICollectionView...Please help me ..Tnx in advance

UICollectionView adding image and button

I used UICollectionView for displaying the images from CameraRoll, it is working fine, now I want to add the Camera button in the collectionview cell. I had written the code like this, button is not getting displayed.
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"collectionCell" forIndexPath:indexPath];
[self.cameraRoll thumbAtIndex:indexPath.row completionHandler:^(UIImage *thumb) {
UIImageView *imageView = [[UIImageView alloc] initWithImage:thumb];
imageView.frame = CGRectMake(0,0,cell.frame.size.width, cell.frame.size.height);
imageView.contentMode = UIViewContentModeScaleAspectFill;
[cell.contentView addSubview:imageView];
//Now Create Button
UIImage* img = [UIImage imageNamed:#"btn_take_pic"];
UIImageView *btnImage = [[UIImageView alloc] initWithImage:img];
btnImage.frame = CGRectMake(0,0, 50,50);
btnImage.frame = CGRectMake(0,0,cell.frame.size.width, cell.frame.size.height);
btnImage.contentMode = UIViewContentModeScaleAspectFill;
//End of create button
[cell.contentView addSubview:btnImage];//Add Button to the cell
}];
return cell;
}
Create Button like this
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"collectionCell" forIndexPath:indexPath];
//Add your image showing code here
//Now Create Button in cell
CGRect btnRect = CGRectMake(0, 0 , 30 , 30);
UIButton *cellBtn = [[UIButton alloc] initWithFrame:btnRect];
[cellBtn setBackgroundImage:[UIImage imageNamed:#"img.png"] forState:UIControlStateNormal];
[cellBtn setTitle:#"Text to Show" forState:UIControlStateNormal];
[cell.contentView addSubview:cellBtn];
[[cell cellBtn] addTarget:self action:#selector(CellBtnTapped:event:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
method for button tap
-(void)CellBtnTapped:(id)sender event:(id)event
{
// perform your action here that you want to do on button tap
}
But It is good that you should make a separate class for your CollectionViewCell and add all objects there, that you want to take in your collectionView cell.
This is the solution for the issue I mentioned above, I think it might be helpful for others, so positing the code here
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"collectionCell" forIndexPath:indexPath];
if(indexPath.row>0)
[self.cameraRoll thumbAtIndex:(indexPath.row-1) completionHandler:^(UIImage *thumb) {
UIImageView *imageView = [[UIImageView alloc] initWithImage:thumb];
imageView.frame = CGRectMake(0,0,cell.frame.size.width, cell.frame.size.height);
imageView.contentMode = UIViewContentModeScaleAspectFill;
[cell.contentView addSubview:imageView];
}];
else{
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"btn_take_pic.png"]];
imageView.frame = CGRectMake(0,0,cell.frame.size.width, cell.frame.size.height);
imageView.contentMode = UIViewContentModeScaleAspectFill;
[cell.contentView addSubview:imageView];
}
return cell;
}

Loading Images into a tableview cell, according to object loaded from NSUserDefaults

I have a tableview populated by objects loaded from NSUserDefaults.
Specifically - when a user presses a button in one view controller, a string is loaded into NSUserDefaults, which is then loaded into an array, which finally populates a table view.
I am wondering how I can load an image in each tableview cell, dependent on what string is loaded from NSUserDefaults?
I don't want to save images IN NSUserDefaults, as I am aware this is not a good idea.
What can I do?
Thank you for your time (and helping a novice out)!
Update 19FEB13
The Strings I am loading into NSUserDefaults are the names of objects, for example "ARCX".
At the moment I have tried a variety of pieces of code, but I am at the point where I seem to have a misunderstanding/lack of knowledge (or both).
UITableViewCell *XCell = [tableView cellForRowAtIndexPath:IndexPath];
NSString *content = Xcell.textLabel.text;
if ([content isEqualToString:#"ARCX"]) [UIImage *Image = [UIImage imageNamed #"ARCX.png"]];
Obviously I'm getting errors from this code.
I hope you can help!
Update 20FEB13
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *string = [myOBJArray objectAtIndex:indexPath.row];
static NSString *CellIdentifier = #"XCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
UIView *cellbackground = [[UIView alloc] initWithFrame:CGRectZero];
cellbackground.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"MSP cell bg MK2.png"]];
cell. backgroundView = cellbackground;
}
cell.textLabel.textColor = [UIColor yellowColor ];
cell.textLabel.font = [UIFont fontWithName:#"Helvetica" size:24.0];
cell.textLabel.text = string;
UITableViewCell *XCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *content = XCell.textLabel.text;
if ([content isEqualToString:#"ARCX"]) [UIImage *Image = [UIImage imageNamed: #"ARCX.png" ]];
cell.imageView.image = Image;
return cell;
}
I did have the code I initially posted in the CellForRowAtIndexPath, but I know I am missing something in the implementation (obviously as it doesn't work!).
Thanks for your time!
Update 19Feb13
I This is my current CellForRowAtIndexPath. No errors, but yet no images in my cells. What am I missing?
Have I got to add an image view? I am currently using a 'basic' cell, not a custom one.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *string = [myObjArray objectAtIndex:indexPath.row];
static NSString *CellIdentifier = #"MSCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
UIView *cellbackground = [[UIView alloc] initWithFrame:CGRectZero];
cellbackground.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"MSP cell bg MK2.png"]];
cell. backgroundView = cellbackground;
}
cell.textLabel.textColor = [UIColor blackColor ];
cell.textLabel.font = [UIFont fontWithName:#"Helvetica" size:24.0];
cell.textLabel.text = string;
if ([string isEqualToString:#"ARCX"])
cell.imageView.image = [UIImage imageNamed: #"ARCX.png"];
else if ([string isEqualToString:#"WPX"])
cell.imageView.image = [UIImage imageNamed:#"WPX.png"];
return cell;
}
Thanks for your time!
UITableViewCell *XCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *content = XCell.textLabel.text;
Please remove this piece of code, as it will call cellForRowAtIndexPath again and again.
You already have the image name as string
NSString *string = [myOBJArray objectAtIndex:indexPath.row];
So change the code like below.
if ([string isEqualToString:#"ARCX"])
UIImage *Image = [UIImage imageNamed: #"ARCX.png"];
cell.imageView.image = Image;

How to get indexPath in a tableview from a button action in a cell?

I have a tableview with two actions in it, for the first on i use the delegate didSelectRowAtIndexPath, for the second one i would like to use an action on a button on my cell to do something else. My problem is that i don't succeed to get the indexpath ? What is the best practice to do that.
If you have added the button to the cell as,
[cell.contentView addSubview:button];
then, you can get the index path as,
- (void)onButtonTapped:(UIButton *)button {
UITableViewCell *cell = (UITableViewCell *)button.superview.superview;
NSIndexPath *indexPath = [tableView indexPathForCell:cell];
// Go ahead
}
I'm using this solution -- getting index path of cell using points
CGPoint center= [sender center];
CGPoint rootViewPoint = [[sender superview] convertPoint:center toView:_tableView1];
NSIndexPath *indexPath = [_tableView1 indexPathForRowAtPoint:rootViewPoint];
NSLog(#"%#",indexPath);
Its work perfectly
here is the full code for a custom button:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
CustomCellFilter *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (!cell) {cell = [[CustomCellFilter alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];}
//configure your cell here
cell.titleLabel.text = #"some title";
//add button
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
resetButton.frame = CGRectMake(40, 10, 18, 18);
[resetButton addTarget:self action:#selector(onButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
[resetButton setImage:[UIImage imageNamed:#"someimage.png"] forState:UIControlStateNormal];
[cell.contentView addSubview:myButton];
//afterwards return the cell
return cell;
- (void)onButtonTapped:(UIButton *)button {
UITableViewCell *cell = (UITableViewCell *)button.superview.superview;
NSIndexPath *indexPath = [filterTable indexPathForCell:cell];
NSLog(#"%#", indexPath);
//use indexPath here...
}
In case you are using a collection view, you can use Yogesh method, but change indexPathForRowAtPoint for indexPathForItemAtPoint like this:
CGPoint center= [sender center];
CGPoint rootViewPoint = [[sender superview] convertPoint:center toView:_tableView1];
NSIndexPath *indexPath = [_tableView1 indexPathForRowAtPoint:rootViewPoint];
NSLog(#"%#",indexPath);
In case that your button is moved or Apple changes the view hierarchy for accessory views, this method goes up the chain to look for a UITableViewCell:
- (void)tapAccessoryButton:(UIButton *)sender {
UIView *parentView = sender.superview;
// the loop should take care of any changes in the view heirarchy, whether from
// changes we make or apple makes.
while (![parentView.class isSubclassOfClass:UITableViewCell.class])
parentView = parentView.superview;
if ([parentView.class isSubclassOfClass:UITableViewCell.class]) {
UITableViewCell *cell = (UITableViewCell *) parentView;
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
[self tableView:self.tableView accessoryButtonTappedForRowWithIndexPath:indexPath];
}
}

xcode uitableview cell image align

I'm sure this is very simple but i can't find any documentation about it..
in my uitableview i have the text labels aligned to the right (my app is in heberw which is rtl)
i'm trying to add an image to the cell to the RIGHT of the text label, no luck, so far the image is aligned to the left and i can't find a way to align it to the right side of the cell.
here's my code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
}
cell.imageView.image = [UIImage imageNamed:#"tableicon.png"];
NSString *cellValue = [[stories objectAtIndex:indexPath.row] objectForKey:#"ArticleTitle"];
cell.textLabel.text = cellValue;
cell.textLabel.textAlignment = UITextAlignmentRight;
cell.textLabel.font = [UIFont systemFontOfSize:17];
cell.textLabel.numberOfLines = 2;
return cell;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 50;
}
Instead of adding the image as a subview of your UITableViewCell, add a container with right aligned subviews.
UIImageView *pic = myImageView;
UIView *picContainer = [[UIView alloc] initWithFrame:cell.frame];
picContainer.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
picContainer.contentMode = UIViewContentModeRight;
pic.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
pic.center = CGPointMake(picContainer.frame.size.width-70, picContainer.frame.size.height/2);
[picContainer addSubview:pic];
[cell.contentView addSubview:picContainer];
This has the added benefit of automatically readjusting when the orientation changes.
try this one
cell.accessoryView=[UIImage imageNamed:#"tableicon.png"];

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