when typing in the UITextView the text is not visible;
when typing is done the text is not visible.
How to make it visible?
The code is below. I do not put the UITextView related code intentionally as only font and alignment properties are set.
// Setup the background image view.
[self.backgroundImageView setBackgroundColor:[UIColor blackColor]];
[self.view sendSubviewToBack:self.backgroundImageView];
// Set the image view.
CGRect r = CGRectMake(0, 0, self.TextView.bounds.size.width, 455);
ImageView = [[UIImageView alloc] initWithFrame:r];
// Set up the scroll view for the image zooming in/out and scrolling.
imgScrollView = [[UIScrollView alloc] initWithFrame:ImageView.bounds];
[imgScrollView setScrollEnabled:YES];
[imgScrollView setClipsToBounds:YES];
[imgScrollView addSubview:ImageView];
[imgScrollView setBackgroundColor:[UIColor clearColor]];
[imgScrollView setContentSize:ImageView.frame.size];
imgScrollView.maximumZoomScale = 5.0;
imgScrollView.delegate = self;
UITapGestureRecognizer *doubleTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(scrollViewDoubleTapped:)];
doubleTapRecognizer.numberOfTapsRequired = 2;
doubleTapRecognizer.numberOfTouchesRequired = 1;
[imgScrollView addGestureRecognizer:doubleTapRecognizer];
[imgScrollView sendSubviewToBack:self.TextView];
[self.view addSubview:imgScrollView];
UPDATE
[imgScrollView addSubview:self.TextView];
the line of code above solved this.
Related
I have navigation bar with custom view on it. UIImageView and UILabel are subviews of titleView. And I add UITapGestureRecognizer to titleView to make it show another UIViewController when the user taps on it. When you tap on titleView other UIViewController opens. But when you click on back button in my titleView size of UIImageView changes. Here is the code
UIView *titleView = [[UIView alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.width, 30)];
UILabel *title = [[UILabel alloc] initWithFrame: CGRectMake(0, 0, self.view.frame.size.width/2, 30)];
title.text = _groupName;
[title setTextColor:[self colorFromHexString:#"#474747"]];
[title setFont:[UIFont fontWithName:#"Roboto-Bold" size:16]];
[title setTextAlignment:NSTextAlignmentCenter];
[title setBackgroundColor:[UIColor clearColor]];
_imageView.frame = CGRectMake(0, 0, 30, 30);
_imageView.layer.cornerRadius = 15.0;
_imageView.layer.masksToBounds = YES;
_imageView.layer.borderColor = [UIColor lightGrayColor].CGColor;
_imageView.layer.borderWidth = 0.1;
_imageView.contentMode = UIViewContentModeScaleAspectFit;
title.frame = CGRectMake(title.frame.origin.x+20, title.frame.origin.y, self.view.frame.size.width/2, 30);
UITapGestureRecognizer *recognizer;
recognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(titleTapped:)];
titleView.userInteractionEnabled = YES;
[titleView addGestureRecognizer:recognizer];
[titleView addSubview:title];
[titleView setBackgroundColor:[UIColor clearColor]];
[titleView addSubview:_imageView];
self.navigationItem.titleView = titleView;
Here are the images where you can see the changes
I check your code Add clips to bounds and do not need to title frame two times.
_imageView.frame = CGRectMake(0, 0, 30, 30);
_imageView.layer.cornerRadius = 15.0;
_imageView.layer.masksToBounds = YES;
_imageView.clipsToBounds = true;
Rather than setting the frame of the views directly, you might try using Auto Layout; I suspect what's happening is that your custom view is getting re-layed-out after the back button, and it's reverting to the image view's instrinsicSize.
What you could do instead is turn off translatesAutoresizingMaskIntoConstraints on the subviews, and then add constraints to position them, and finally add width and height constraints to the image view.
Using Auto Layout is also recommended if you ever intend to internationalize your app -- if you set up your constraints correctly, then the translated title will fit and you won't have to ever play around with hardcoded values.
I'm displaying an image in a UIScrollView but I want it to blend with a UIImageView which is laid behind the UIScrollView.
I'm currently trying to override - (void)drawRect:(CGRect)rect in a subclass of UIView created to display the image inside the scrollview, using either the method drawInRect:blendMode:alpha: or CGContextSetBlendMode but none worked. I think the reason is that the current context is opaque but I cannot find a workaround.
You can add UIImageView as a subclass of UIView (parent view of your scroll view).
You can change opacity of your UIImageView to match your criteria. If you just want a image as a background of your UIView you can set up background of your view and as a colour you can use [UIColor colorWithPatternImage:Your UIImage here].
Is it something you need?
//EXTENDED
I try it and both of the example below set the image as a background and when I scroll the image is not moving:
Example 1:
[self.view setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:#"newtons_cradle.jpg"]]];
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
[scrollView setContentSize:CGSizeMake(self.view.bounds.size.width, 1000.0f)];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 50, 300, 50)];
[label setBackgroundColor:[UIColor whiteColor]];
[label setText:#"Label Test Text"];
[scrollView addSubview:label];
[self.view addSubview:scrollView];
Example 2:
UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];
[imageView setImage:[UIImage imageNamed:#"newtons_cradle.jpg"]];
[self.view addSubview:imageView];
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
[scrollView setContentSize:CGSizeMake(self.view.bounds.size.width, 1000.0f)];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 50, 300, 50)];
[label setBackgroundColor:[UIColor whiteColor]];
[label setText:#"Label Test Text"];
[scrollView addSubview:label];
[self.view addSubview:scrollView]
;
I am using a UIScrollView where I got some UIButtons, to recognize that I pressed the button above, I created a subclass of UIScrollView where rewrite the method
- (BOOL) touchesShouldCancelInContentView (UIView *) view
but only enters that method when the touch is a journey, never comes when I press on the screen without more.
the UIScrollView I've created thus:
`
CGSize containerSize = CGSizeMake(320.0f, 480.0f);
CGSize containerSize2 = CGSizeMake(640.0f, 960.0f);
self.scrollView = [[UIScrollViewWithButtons alloc] initWithFrame:(CGRect){.origin=CGPointMake(0.0f, 0.0f), .size=containerSize}];
[self.scrollView setMinimumZoomScale:0.5f];
[self.scrollView setMaximumZoomScale:1.0f];
[self.scrollView setZoomScale:0.5f];
[self.scrollView setDelegate:self];
self.scrollView.bounces = NO;
self.scrollView.bouncesZoom = NO;
self.scrollView.delaysContentTouches = NO;
self.scrollView.userInteractionEnabled = YES;
[self.scrollView setContentInset:UIEdgeInsetsZero];
[self.view addSubview:self.scrollView];
self.containerView = [[UIView alloc] initWithFrame:(CGRect){.origin=CGPointMake(0.0f, 0.0f), .size=containerSize2}];
self.containerView.userInteractionEnabled = YES;
[self.scrollView addSubview:self.containerView];
[self.scrollView setClipsToBounds:NO];
//instanciar uimageview
fondo = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 640, 960)];
[self.containerView addSubview:fondo];
[fondo setImage:[UIImage imageNamed:#"Grande.png"]];
self.scrollView.contentSize = containerSize2;
and button add
imagen = [UIButton buttonWithType:UIButtonTypeCustom];
[imagen addTarget:self action:#selector(pulsadoIzq) forControlEvents:UIControlEventTouchUpInside];
[imagen setTitle:#"" forState:UIControlStateNormal];
[imagen setFrame:CGRectMake(xUser, yUser, 50.0f, 50.0f)];
[imagen setImage:[UIImage imageNamed:#"boton.png"] forState:UIControlStateNormal];
[self.containerView addSubview:fichaUserIzq];
imagen.center = CGPointMake(xUser, yUser);`enter code here`
I need to capture the tap on the screen to the buttons
How I can do?
I would also like to know because if I have implemented this code:
img = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"img.png"]];
UIPanGestureRecognizer *panRecg = [[UIPanGestureRecognizer alloc]initWithTarget:self action:#selector(imgDragged:)];
img.userInteractionEnabled = YES;
[img addGestureRecognizer:panRecg];
img.center = CGPointMake(160, 436);
[self.scrollView addSubview:img];
When I click on the image nothing happens, does not enter the method, only comes when I press and drag. I also want to capture when pressed over this image and so I capture only when the move.
I solved the problem, I implement this method:
-(void)singleTapGestureCaptured:(UITapGestureRecognizer*)gesture{
CGPoint touchPoint = [gesture locationInView:self.scrollView];
if ((touchPoint.x > 88)&&(touchPoint.x < 226)&&(touchPoint.y > 172)&&(touchPoint.y < 319)) {
if (rodando) {
[self pararAnimacionDado];
}
}
}
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(singleTapGestureCaptured:)];
[scrollView addGestureRecognizer:singleTap];
I have a horizontal scrollview filled with UIImageViews.
I want to detect a tap on the UIImageView and have its background color changed.
Somehow the tap gesture is not working or so.
However, when I add a tap gesture to the scrollview, it works. The scrollview.background color can be changed.
But I want to detect a tap on the UIImageViews it contains!
UIScrollView* scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 50, 768, 127)];
[scrollView setScrollEnabled:YES];
scrollView.backgroundColor = [UIColor orangeColor];
[scrollView setShowsHorizontalScrollIndicator:NO];
UIImageView *contentOfScrollView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 1, 1130, 125)];
scrollView.contentSize = CGSizeMake(contentOfScrollView.frame.size.width, contentOfScrollView.frame.size.height);
for (int aantal=0; aantal < 6; aantal++) {
UIImageView *item = [[UIImageView alloc] initWithFrame:CGRectMake(3+(aantal*188), 0, 185, 125)];
item.backgroundColor = [UIColor yellowColor];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:item action:#selector(imageTapped:)];
tap.numberOfTapsRequired = 1;
tap.cancelsTouchesInView=YES;
item.userInteractionEnabled = YES;
[item addGestureRecognizer:tap];
[contentOfScrollView addSubview:item];
}
//UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(imageTapped:)];
//[scrollView addGestureRecognizer:tap];
scrollView.userInteractionEnabled=YES;
scrollView.delaysContentTouches=NO;
[scrollView addSubview:contentOfScrollView];
[self.view addSubview:scrollView];
And this is the imageTapped function.
-(void)imageTapped:(UITapGestureRecognizer *)gesture
{
NSLog(#"tapped!");
gesture.view.backgroundColor = [UIColor whiteColor];
}
User interaction is set to NO by default for UIImageView, so you need to set it to YES.
You set it to yes for "item", but not for contentOfScrollView.
Your error is here:
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:item action:#selector(imageTapped:)];
You need to change the target to "self" instead of "item", then it won't crash.
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(imageTapped:)];
How to insert four tableview in a scrollview by pagination.i know how to do this ,but i need a image view as first page and then tableview as second,third and forth page.
Thankz in advance
_scroll=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 55, 1000, 460)];
_scroll.backgroundColor=[UIColor clearColor];
_scroll.pagingEnabled=YES;
_scroll.contentSize = CGSizeMake(1000*5, 460);
[_scroll setBackgroundColor:[UIColor lightGrayColor]];
CGFloat x=0;
for(int i=1;i<6;i++)
{
UITableView *table = [[UITableView alloc]initWithFrame:CGRectMake(x+10, 10, 750, 440) style:UITableViewStylePlain];
[table setBackgroundColor:[UIColor whiteColor]];
table.rowHeight = 120;
table.separatorColor = [UIColor grayColor];
table.delegate=self;
//table.dataSource=self;
[_scroll addSubview:table];
[table release];
x+=1000;
}
[self.view addSubview:_scroll];
_scroll.showsHorizontalScrollIndicator=NO;
[_scroll release];
Ignoring the recommendation that UITableViews are not embedded inside scroll views as they are scrollviews in themself. So dont do this (not a joke).
You add the imageview with addSubview: just like the tableviews you want add. They are all UIViews and are all treated the same way.
So for a hypothetical scrollview with size (100,100) and imageview/tableviews of size (100,100)
imageview.frame = CGRectMake(0,0,100,100);
[scrollview addSubview:imageview];
tableview1.frame = CGRectMake(100,0,100,100);
[scrollview addSubview:tableview1];
tableview2.frame = CGRectMake(200,0,100,100);
[scrollview addSubview:tableview2];
tableview3.frame = CGRectMake(300,0,100,100);
[scrollview addSubview:tableview3];
scrollview.contentSize = CGSizeMake(400,100);
scrollview.pagingEnabled = YES;