I need to animate table view cell text label.When user long press the cell the text should start moving from right to left as in music player (the name of song is moving from right to left).
Thanks for help
For what you want to do you need to disable selection for the tableView.
Add this on viewDidLoad: tableView.allowsSelection = NO;
after that add gesture recognizer to the labels:
cell.label = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(gestureAction:)];
[self.longPressGestureRecognizer setDelegate:self];
[cell.label addGestureRecognizer:self.longPressGestureRecognizer];
As for the Label, it should be wider than the width of the screen and only 1 line (that way the text will disappear).
- (void)gestureAction:(UIGestureRecognizer *)recognizer {
//in here you add the code with animation to move the position of the label
}
Related
I have a search button that onClick opens an UIView that covers most of the screen (It's like an UIAlertView). The UIView has as first element an UIImageView 2 UITextView and a close UIButton, what I want to add now is a gesture recognizer that works like this:
When the user drags the UIImageView down it also drags the UIView and it close it.
I tried with the following code in order to detect the Swipe gesture:
UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeToDoMethod)];
[swipeGesture setDirection:UISwipeGestureRecognizerDirectionDown];
[[self popupImage] addGestureRecognizer: swipeGesture];
But I don't know how to proceed after this, can someone point me to the right direction in order to reproduce the effect I want?
missing delegate:
....
[swipeGesture setDirection:UISwipeGestureRecognizerDirectionDown];
swipeGesture.delegate=self;
....
I have 2 tables in one view. Table A lists a bunch of users. Table B lists a users objects. When a row is selected in Table A, Table B is reloaded with the objects that belong to that user.
So when a user selects a row in Table A, the image in the background of the cell changes to the highlighted version of the image.
Here is the normal version of the background image:
Here is the highlighted version of the background image:
As you can see, the highlighted version has a small arrow on the right of it. This arrow is beyond the width of the table cell the table itself. When the row is selected, the image changes as it should, but the image is sized down to fit the whole image into the cell.
What I would like to happen is the image goes outside of the table, or on top of the table for that selected row.
One possible solution I thought was to center the table on the selected row and then overlay that image, but if the user was to try to scroll through the table, the image would need to move and that would be a big pain.
So what I would like to know is it is possible to extend the cell's size beyond the table one it is selected?
Thanks in advance!
EDIT:
The following does not work, just in case anyone was going to try:
[cell setFrame:CGRectMake(cell.frame.origin.x, cell.frame.origin.y, cell.frame.size.width+20, cell.frame.size.height)];
Setting a views clipsToBounds property to NO will allow the view to draw outside of its own frame.
In your UITableViewController subclass:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do what you normally do here, if anything then add...
self.view.clipsToBounds = NO;
}
Doing this has a side effect where you will see full cells be created at the bottom or top of the tableview instead of them scrolling partially into view. Either put the table view into another view that has clipsToBounds set to YES, align the edges of the table view with the edges of the screen, or have views covering over the bottom and top (like a UIToolbar and UINavigationBar normally would).
To get the UITableViewCell's selectedBackgroundView to extend past the table view's frame create a subclass of UITableViewCell and override the layoutSubviews method.
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
self.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"YQGyZ"]];
self.selectedBackgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"CQXYh"]];
self.textLabel.backgroundColor = [UIColor clearColor];
self.detailTextLabel.backgroundColor = [UIColor clearColor];
}
return self;
}
- (void)layoutSubviews {
[super layoutSubviews];
CGRect frame = self.selectedBackgroundView.frame;
frame.size.width += 13; // where 13 is the size of the arrow overhang from the same images
self.selectedBackgroundView.frame = frame;
// You can also change the location of the default labels (set their background colors to clear to see the background under them)
self.textLabel.frame = CGRectMake(70, 0, 148, 30);
self.detailTextLabel.frame = CGRectMake(70, 30, 148, 30);
}
Good luck.
I would recommend modifying the image resource of the unselected cell background such that it is the same width as the selected background, but just has a transparent rectangle on the side.
The UITextFields in my app have placeholder text defined (in Interface Builder), and I cannot cause these fields to acquire focus (i.e. show the keyboard and allow editing) when I tap on the area occupied by the placeholder text. If I tap on the textfields in an area just outside the that of placeholder text (though still within the bounds of the textfiled itself), it acts as normal (i.e. the keyboard pops up and I can edit the content of the textfield). How can I fix this?
Thanks.
EDIT 1
Ok, I think I've got it. I'm also setting a blank view to the "leftView" property of these UITextFields. If I remove this, you can touch the UITextFields in the area of the placeholder text and it reacts as expected; I need this view for the leftView though. If you change the background color of this spacer view to red, you can see that it doesn't get in the way at all, so I don't know what's going wrong.
Why does this code cause this problem?
Thanks.
+(UIView*)getTextFieldLeftSpacerViewWithBackgroundColor:(UIColor*)backgroundColor andHeight:(CGFloat)height
{
UIView *leftWrapper = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 8.0f, height)];
leftWrapper.autoresizingMask = UIViewAutoresizingNone;
[leftWrapper setOpaque:YES];
if(backgroundColor){leftWrapper.backgroundColor = backgroundColor;}
else{leftWrapper.backgroundColor = [UIColor clearColor];}
return [leftWrapper autorelease];
}
+(void)setTextFieldLeftSpacerForTextFieled:(UITextField*)textField
{
if(textField)
{
UIView *spacer = [MYViewController getTextFieldLeftSpacerViewWithBackgroundColor:nil andHeight:textField.bounds.size.height];
textField.leftView = spacer;
textField.leftViewMode = UITextFieldViewModeAlways;
}
}
Just ran into the same problem and didn't want to subclass, just had to use :
leftWrapper.userInteractionEnabled = NO;
I abandoned this approach. Instead of using an invisible view to offset the text, I opted to subclass UITextField and provide offset CGRects for the bounds of the text within theUITextField. The following SO post was very helpful:
Indent the text in a UITextField
I made an application using the camera.
I didn't use the default camera toolbar.
So I add a toolbar on camera overlay view.
I want to draw tap to focus indicator
So I used UITapGestureRecognizer.
Here is the code
UITapGestureRecognizer *focusRect = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(drawFocusRect:)];
focusRect.numberOfTapsRequired = 1;
focusRect.numberOfTouchesRequired = 1;
[cameraPicker.view addGestureRecognizer:focusRect];
[focusRect release];
In the drawFocusRect method
NSLog(#"tapped");
But it dosen't work.
I changed the value of numberOfTouchedRequired, 2;
And it works.
I think that it doen't work when only single-tap
So, how can I implement this single tapping gesture processing method?
I think camera view's focus view at top of all view.
And I think it has single tap action.
So If you want do this, you should read AVCamera demo in WWDC2010.
I have a UITableViewController and intend to add a subview to it when I click a button i.e. refresh button. My code is as follows:
//set up loading page
self.myLoadingPage = [[LoadingPageViewController alloc]init ];
self.myLoadingPage.view.frame = self.view.bounds;
self.myLoadingPage.view.hidden = NO;
[self.view addSubview:self.myLoadingPage.view];
My question is how can I set this subview to be in the current visible frame? especially for a UITableviewcontroller where I might click on the refresh button after scrolling down to the 100th cell, for this example, my subview will still be added right at the top of the table view (starting from cell 1). Is there any way to resolve this?
Just move the lines around so that you set the frame after you made it a subview
self.myLoadingPage = [[LoadingPageViewController alloc]init ];
self.myLoadingPage.view.hidden = NO;
[self.view addSubview:self.myLoadingPage.view];
self.myLoadingPage.view.frame = self.view.bounds;