I am making an app where you have to enter your name. Then when you press the go button, the text field, button, and text vanish. But I don't really know how to.
if you just need to vanish you can make it hidden
yourButton.hidden = YES;
or
yourButton.alpha = 0.0;
or you can remove it like
[yourButton removeFromSuperview];
Put all UIButton, UITextView, UITextField, UIImageView in one view and let that view get hidden when you click Go button. This way you don't have multiple hidden statement for each UIButton, UITextView, UITextField, UIImageView, etc.
So final statement would be
yourView.hidden = YES;
Related
In storyboard I have a UITableViewController-->UITableView-->UITableViewSecion--> with static cells
in the same UITableView I also have a UIView that holds a background image and UITextView.
A click on a button shows the UIView and set it's frame, which appears OK, but as soon as I click on the UITextView or make it firstResponder programmatically the keyboard appears and the view disappears
the code when clicking the button
self.myView.frame = CGRectMake(0, self.tableView.contentOffset.y+100, self.tableView.frame.size.width, self.tableView.frame.size.height-100);
self.myView.hidden = NO;
how can I fix this?
Can you copy paste us the code where you add the view to the tableview? Are you doing it with constraints or with frames?
The issue you are having is probably due to the fact the UITableViewControllers automatically shrink the contentSize of the UITableView they hold when the keyboard shows. If you add a UIView to your tableView with addSubview: programmatically, you might need to add a flexible bottom resize mask to make sure when the contentSize shrinks in height, your view stays attached to the top and not the bottom.
Try this on viewDidLoad:
[theViewYouAddedToTableView setAutoresizingMask:UIViewAutoresizingFlexibleBottomMargin];
I'm trying to have some text in a UITextView change color (and sometimes change text) after a button press:
I have loaded a text view in ViewController with a simple string in viewDidLoad
self.answer1TextView.text = questions[1];
The above displays just fine.
There is button next to it, which triggers the following method (also in ViewController):
- (IBAction)select1ButtonTapped:(id)sender {
self.answer1TextView.textColor = [UIColor redColor];
}
The problem is this: when the button is tapped, the text in the UITextView doesn't change color, and the right half of the view disappears.
I'd greatly appreciate some advice on this. Thank you.
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've got a UITableView with the ability to delete the rows using edit mode etc. As standard, when you tap the 'edit' button, you go into edit mode and the content of the cells gets moved to the right. If you do a 'swipe to delete', the cell content stays where it is.
What I want to do is increase the indentation when you enter edit mode. I've tried the UITableView delegate method indentationLevelForRowAtIndexPath but that doesn't seem to work when I'm using a UITableViewCell subclass.
In the end I used the layoutSubviews method in my UITableViewCell subclass. Below is my code:
- (void)layoutSubviews
{
[super layoutSubviews];
CGRect b = [self bounds];
if(self.editing && !self.showingDeleteConfirmation){
b.origin.x = 42;
}
[self.contentView setFrame:b];
}
This indents the cell content further when you enter edit mode and thanks to the "!self.showingDeleteConfirmation", when you do a 'swipe to delete', it doesn't indent it.
However, when you tap the 'edit' button, then tap one of the circle delete buttons, the cell content slides back to the original 0 x axis position. This is because the showingDeleteConfirmation is now set to true.
I've tried to fix this by checking what the current origin.x value is, but every time I check, it's set to 0.
Is there a way I can achieve what I want?
I am currently working a on project where I have lots of custom table view cells. Part of the requirements is that the cells be able to expand if their default size can not hold all of the content. If they need to be able to expand I have to add a UIButton to the cell and when it is tapped redraw it in a bigger view where all the data fits. Currently in draw rect I essentially do this:
if([self needsExpansion]) {
[self addExpansionButton];
}
-(void)addExpansionButton {
self.accessoryButton = [UIButton buttonWithType:UIButtonTypeCustom];
[self.accessoryButton setShowsTouchWhenHighlighted:YES];
UIImage *buttonImage = [UIImage imageNamed:#"blue_arrow_collaps_icon.png"];
[self.accessoryButton setFrame:CGRectMake(280, 82, buttonImage.size.width, buttonImage.size.height)];
[self.accessoryButton setImage:buttonImage forState:UIControlStateNormal];
[self.accessoryButton addTarget:self action:#selector(toggleExpanded) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:self.accessoryButton];
}
This works fine, except for when I click anywhere else in the cell the button flickers and disappears. Anyone know how to propertly do this?
From the UITableViewCell Class Reference:
You have two ways of extending the
standard UITableViewCell object beyond
the given styles. To create cells with
multiple, variously formatted and
sized strings and images for content,
you can get the cell's content view
(through its contentView property) and
add subviews to it.
Instead of adding the accessory button as a subview of the UITableViewCell, you should add it as a subview of the contentView:
[[self contentView] addSubview:self.accessoryButton];
Have you worked out the following problem in your design approach?: Let's say one of your cells (let's call it A) determines it needs expansion, so you add a button to it. What happens when the user scrolls through the UITableView? For performance reasons, your UITableView delegate should be using dequeueReusableCellWithIdentifier in tableView:cellForRowAtIndexPath:. So you'll be reusing A to display a different row of the table. Do you really want A to have an accessory button? Probably not, since it's now representing a different object.
You're probably better off doing the cell customization at the UITextViewDelegate. In tableView:cellForRowAtIndexPath:, you can determine if the object being displayed at the row specified needs a button, and if it does add it as a subview to the contentView.
Then again, if your table size is always relatively small (say < 50), you can use this approach Jeremy Hunt Schoenherr suggests.