After not finding an answer I have to again ask you all for help. I am creating a UIStepper programatically but it will not display. Labels, buttons, and switches are all displaying properly so I must be missing something related to the stepper.
Elsewhere in my code I declare and initialize UIView *v and NSMutableArray *steppers, and declare UIStepper *st. The code to create the stepper is:
st = [[UIStepper alloc] init];
st.frame = CGRectMake(xnear, ypos, 0, 0);
[st addTarget:self action:#selector(stepper1:) forControlEvents:UIControlEventValueChanged];
[st setMinimumValue:0];
[st setMaximumValue:99];
[st setWraps:NO];
[st setContinuous:NO];
[v addSubview:st];
[steppers addObject:st];
At runtime xnear = 100 and ypos = 250, so the stepper is within the display. A label immediately above, and a text field immediately below, are displaying. Other questions regarding the UIStepper state the width and height are ignored, so I used 0 for both. Is there anything obviously wrong with this code?
You are setting height and width of UIStepper as 0
st.frame = CGRectMake(xnear, ypos, 0, 0);
give some height and width
st.frame = CGRectMake(xnear, ypos,200, 100);
The answer is, quite frankly, embarrassing. A custom background color was set for the UIView and no color was set for the control. I was able to get the stepper to show up with the following line of code:
st.backgroundColor = [UIColor whiteColor];
Similarly, the UISegmentedControl *sc showed up when I added:
sc.backgroundColor = [UIColor whiteColor];
Thanks for the help and sorry to waste your time!
Related
I've got a Custom Button class that I'm setting up the text for in my storyboard file. The text is a simple "Update Email Address" and does not change throughout the life of the app.
However, I have an image I want to add to the button, and when I do that, I set the image in the following way, in a method inside the common button class:
[self setTintColor:[UIColor whiteColor]];
UIImage *icon = [UIImage imageNamed:iconName];
CGFloat iconWidth = icon.size.width;
[self setImage:icon forState:UIControlStateNormal];
[self setWidth:self.width+iconWidth*2];
[self setOriginX:self.x-iconWidth];
[self setTitleEdgeInsets:UIEdgeInsetsMake(0, -iconWidth*2, 0, 0)];
CGFloat leftMargin = 10;
CGFloat moveLeft = self.titleLabel.frame.size.width + self.titleLabel.x + leftMargin;
[self setImageEdgeInsets:UIEdgeInsetsMake(0, moveLeft , 0, 0)];
However, by setting it this way, it appears the titleLabel's width is 0 so the image isn't being set in the correct location on the button.
My thoughts on why this are happening are potentially because I never set the text programmatically, only in the storyboard, although that really doesn't make sense, it's all I got.
Does anyone see anything wrong here? If you need any other code let me know and I can post up the relevant info.
When do you do this? Maybe you are trying to do this after the resource was loaded but before the frames of all the elements are set.
When I set the custom font for the segmented control then it changes the vertical text alignment. I am using below code to set the font .
// I dont think these lines are creating any issue but just wanted to paste all the code
self.segmentType.layer.borderColor = navigationTintColor.CGColor;
self.segmentType.layer.cornerRadius = 0.0;
self.segmentType.layer.borderWidth = 1.5;
// These are the lines that are changing the text alignment
UIFont *font = [UIFont fontWithName:ftHelveticaNeueLTPro_Th size:13.5];
NSDictionary *attributes = [NSDictionary dictionaryWithObject:font
forKey:UITextAttributeFont];
[self.segmentType setTitleTextAttributes:attributes
forState:UIControlStateNormal];
Here is the screenshot of whats is happening . If you observer, the text is not vertically centre aligned .
Please help me . Thank you in advance !!
The below code suggested by #Emmanuel works perfectly fine. You can change the vertical offset to align the text vertically at the center .
[self.segmentType setContentPositionAdjustment:UIOffsetMake(0, 2) forSegmentType:UISegmentedControlSegmentAny barMetrics:UIBarMetricsDefault];
Can you please try it using custom UILabel on custom view on it. Change & modify frame value of either titleLabel or customSegmentView as per convenience on actual view. And add this whole view as subview on your segmented control.
UIView *customSegmentView = [[UIView alloc] init];
UILabel *segmentTitleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 7.0f,180.0f,22.6f)];
segmentTitleLabel.text = #"your-text";
segmentTitleLabel.backgroundColor = [UIColor clearColor];
segmentTitleLabel.textAlignment = UITextAlignmentCenter;
segmentTitleLabel.font = [UIFont fontWithName:#"ftHelveticaNeueLTPro_Th" size:13.5f];
customSegmentView.frame = CGRectMake(60, 20, 180, 35);
[customSegmentView addSubview:segmentTitleLabel];
[self.segmentType setTitleView:customSegmentView];
Hope that will work for your issue. Please check and let me know if we have to go with another solution.
In InterfaceBuilder on XCode 6 there is a Content Offset control for the segments, which affects the baseline of the text. I had this problem because my Content Offset was 2 in the Y dimension instead of 0.
I created a UITextField programatically, (I do not use storyboard) and added it as a subview to ViewController with this code:
#interface ViewController ()
#property (nonatomic, strong) UITextField *searchLocationBar;
#end
...
#synthesize searchLocationBar;
...
self.searchLocationBar = [[UITextField alloc] init];
self.searchLocationBar.frame = CGRectMake(0.0f, 0.0f, 320.0f, 40.0f);
self.searchLocationBar.delegate = self;
self.searchLocationBar.borderStyle = UITextBorderStyleRoundedRect;
self.searchLocationBar.placeholder = #"a temporary placeholder";
self.searchLocationBar.userInteractionEnabled = YES;
self.searchLocationBar.clearButtonMode = UITextFieldViewModeAlways;
[self.view addSubview:self.searchLocationBar];
However, I cannot enter any text - nothing happens, when I tap on a textfield. It's not overlapped by any other view.
I've checked UITextfield not editable-iphone but no effect
I'm newbie and totally sure I simply miss something - please advice.
Thanks!
EDIT:
One more thing: I have a Google Maps GMSMapView assigned to self.view as
self.view = mapView_; as written in Google API documentation.
After some tests I found that with this declaration all controls work perfectly, but not textfields. I would prefer not to move a map view to any subview as I will need to rewrite lots of things.
Can someone please add any suggestions?
you forget add:
[self.view bringSubviewToFront:self.searchLocationBar];
In Xcode 5 your code should work.Better you check your Xcode version.May be the problem with your code with Xcode versions.You can try by following way.
UITextField *lastName = [[[UITextField alloc] initWithFrame:CGRectMake(10, 100, 300, 30)];
[self.view addSubview:lastName];
lastName.placeholder = #"Enter your last name here"; //for place holder
lastName.textAlignment = UITextAlignmentLeft; //for text Alignment
lastName.font = [UIFont fontWithName:#"MarkerFelt-Thin" size:14.0]; // text font
lastName.adjustsFontSizeToFitWidth = YES; //adjust the font size to fit width.
lastName.textColor = [UIColor greenColor]; //text color
lastName.keyboardType = UIKeyboardTypeAlphabet; //keyboard type of ur choice
lastName.returnKeyType = UIReturnKeyDone; //returnKey type for keyboard
lastName.clearButtonMode = UITextFieldViewModeWhileEditing;//for clear button on right side
lastName.delegate = self; //use this when ur using Delegate methods of UITextField
There are lot other attributes available but these are few which we use it frequently.if u wanna know about more attributes and how to use them refer to the following link.
You can also make property for UITextField.Either way should work fine in Xcode.
http://developer.apple.com/library/ios/#documentation/uikit/reference/UITextField_Class/Reference/UITextField.html
I have a UILabel in the main view with text - "Very Very long text". The proper width to this would be 142, but i've shortened it to 55.
Basically I want to implement a marquee type scroll, so I wrote code to add it onto a subview and animate it within the bounds of that view.
CODE --
CGRect tempLblFrame = _lblLongText.frame;
UIView *lblView = [[UIView alloc] initWithFrame:tempLblFrame];
//Add label to UIView at 0,0 wrt to new UIView
tempLblFrame.origin.x = 0;
tempLblFrame.origin.y = 0;
[_lblLongText setFrame:tempLblFrame];
[_lblLongText removeFromSuperview];
[lblView addSubview:_lblLongText];
//SetClipToBounds so that if label moves out of bounds of its superview, it wont be displayed
[lblView setClipsToBounds:YES];
[lblView setBackgroundColor:[UIColor cyanColor]];
[self.view addSubview:lblView];
After this I get this output on the simulator -->
The problem occurs when i try the Animation with this code -
tempLblFrame.origin.x = -_lblLongText.intrinsicContentSize.width;
[UIView animateWithDuration:2.0 delay:1.0 options:UIViewAnimationOptionCurveLinear
animations:^{
[_lblLongText setFrame:tempLblFrame];
}
completion:^(BOOL finished) {
NSLog(#"completed");
}];
I was hoping I would see the entire "Very Very long text", rather only "Very..." scrolls from left to right.
To solve this I added one line of code --
//Add label to UIView at 0,0 wrt to new UIView
tempLblFrame.origin.x = 0;
tempLblFrame.origin.y = 0;
tempLblFrame.size.width = _lblLongText.intrinsicContentSize.width; //THIS LINE WAS ADDED
[_lblLongText setFrame:tempLblFrame];
[_lblLongText removeFromSuperview];
[lblView addSubview:_lblLongText];
I thought the full text will be set inside the newly added UIView and it would scroll properly. But running in the simulator gave me this --
And again, only "Very..." was scrolling from left to right.
What am I doing wrong? Please help!!
EDIT
Apparently the culprit was AutoLayout.
I have no clue why, but once I unchecked "Use Autolayout" for the view
in the XIB, everything started working as expected. Setting
tempLblFrame.origin.x = -_lblLongText.intrinsicContentSize.width; was
working properly and so was the scroll.
Any explanation on this!!?
This question is possibly Duplicate of.
Although there is nice code snippet written by Charles Powell for MarqueeLabel,
also take a look at This link.
I hope this will help you and will save your time by giving a desired output.
Make the UILabel the width (or longer) of the text and the UIView the scroll area you want to see. Then set the UIView's clipToBounds to YES (which you are doing). Then when you animate left to right you will only see the the text the width of the UIView, since it is cutting any extra subviews. Just make sure you scroll the entire length of the UILabel.
Right now you are setting the view and label's height and width to the same thing. This is why you are getting clipped text, not a clipped label.
You add In your view scrollview and add this label in your scroll view .Use this code
scroll.contentSize =CGSizeMake(100 *[clubArray count],20);
NSString *bname;
bname=#"";
for(int i = 0; i < [clubArray count]; i++)
{
bname = [NSString stringWithFormat:#"%# %# ,",bname,[[clubArray objectAtIndex:i] objectForKey:#"bottle_name"]];
[bname retain];
}
UILabel *lbl1 = [[UILabel alloc] init];
[lbl1 setFrame:CGRectMake(0,5,[clubArray count]*100,20)];
lbl1.backgroundColor=[UIColor clearColor];
lbl1.textColor=[UIColor whiteColor];
lbl1.userInteractionEnabled=YES;
[scroll addSubview:lbl1];
lbl1.text= bname;
This is implemented code.Thanks
Apparently the culprit was AutoLayout.
I have no clue why, but once I unchecked "Use Autolayout" for the view in the XIB, everything started working as expected. Setting tempLblFrame.origin.x = -_lblLongText.intrinsicContentSize.width; was working properly and so was the scroll.
Still, a better explanation for this would surely help!!
EDIT: Solution with AutoLayout -
//Make UIView for Label to sit in
CGRect tempLblFrame = _lblLongText.frame;
UIView *lblView = [[UIView alloc] initWithFrame:tempLblFrame];
//#CHANGE 1 Removing all constraints
[_lblLongText removeConstraints:_lblLongText.constraints];
//Add label to UIView at 0,0 wrt to new UIView
tempLblFrame.origin.x = 0;
tempLblFrame.origin.y = 0;
//Set Full length of Label so that complete text shows (else only truncated text will scroll)
tempLblFrame.size.width = _lblLongText.intrinsicContentSize.width;
//#CHANGE 2 setting fresh constraints using the frame which was manually set
[_lblLongText setTranslatesAutoresizingMaskIntoConstraints :YES];
[_lblLongText setFrame:tempLblFrame];
[_lblLongText removeFromSuperview];
[lblView addSubview:_lblLongText];
I am facing a problem with updating my labels.. it doesn't remove the old values so new values go on top of old ones.. any help with this will be appreciated..
timer = [NSTimer scheduledTimerWithTimeInterval:1
target:self
selector:#selector(updateLabels)
userInfo:nil
repeats:YES];
-(void) updateLabels{
for (GraphView *graph in arr){
// retrieve the graph values
valLabel = [[UILabel alloc] initWithFrame:CGRectMake(i * 200, 0, 90, 100)];
valLabel.textColor = [UIColor whiteColor];
valLabel.backgroundColor = [UIColor clearColor];
valLabel.text = [NSString stringWithFormat:#"Value: %f", x];
i++;
}
}
If you set the text of your label you do not need to call setNeedsDisplay or clearContext etc.
In your code, I do not know what are your variables i and x?
The main problem is that you are creating and adding new labels on your view. When you call updateLabels method, may cause a Memory leak. Simply you have n times labels overlapped.
You need to remove the labels before you create and add new labels or you can reuse which you already have. To reuse your labels you need to save them to an array and update texts.
If you want to create new labels then you can do like this unless you have other labels in your view
-(void) updateLabels{
// remove all labels in your view
for (UIView *labelView in self.view.subviews) {
if ([labelView isKindOfClass:[UILabel class]]) {
[labelView removeFromSuperview];
}
for (GraphView *graph in arr){
// retrieve the graph values
valLabel = [[UILabel alloc] initWithFrame:CGRectMake(i * 200, 0, 90, 100)];
valLabel.textColor = [UIColor whiteColor];
valLabel.backgroundColor = [UIColor clearColor];
valLabel.text = [NSString stringWithFormat:#"Value: %f", x];
i++;
}
}
When you create new labels like this you need to add them to your view as subview
[self.view addSubview: valLabel];
if you have other labels in your view then you can save them in an array and remove just them
Your updateLabels method is actually creating new UILabel controls each time so they will simply appear "on top of" older ones. I'm guessing this is not what you want, although it's not perfectly clear so apologies if I've misunderstood what you're trying to do.
If I'm correct about that, create your UILabel controls just once maybe in your viewDidLoad or similar. Then just set their .text properties when your timer fires.
You need to call setNeedsDisplay so that the app knows it has changed and redraw it.
- (void)setNeedsDisplay
Set clearsContextBeforeDrawing property of your label to YES
you can set this from nib as well as code.
label.clearsContextBeforeDrawing = YES;