self.recordPercentageSlider = [ASValueTrackingSlider new]; self.recordPercentageSlider.delegate = self; self.recordPercentageSlider.frame = CGRectMake(20.0, 45.0, CGRectGetWidth(self.frame) - 2.0 * 20.0, 31.0); //self.recordPercentageSlider.value = 1.0; self.recordPercentageSlider.font = [UIFont fontWithName:@"AvenirNext-Medium" size:15.0]; self.recordPercentageSlider.tintColor = [UIColor autumnColorWithAlpha:ZTAlphaLevelFull]; [self.recordPercentageSlider addTarget:self action:@selector(recordPercentageValueChanged) forControlEvents:UIControlEventValueChanged]; [self.contentView addSubview:self.recordPercentageSlider];

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init]; [numberFormatter setNumberStyle:NSNumberFormatterPercentStyle]; [self.recordPercentageSlider setNumberFormatter:numberFormatter]; self.recordPercentageSlider.popUpViewAnimatedColors = @[[UIColor carbonColorWithAlpha:ZTAlphaLevelFull], [UIColor autumnColorWithAlpha:ZTAlphaLevelFull]];

This is the code I used for inserting the slider but will only display the first color in the array. I used these same lines for two different part of a project, both in table's cells, in which the animation did trigger while the other didn't.

Hello again,

Sorry, I don't know how to commit my own enhancements, but I added a snapping capability to your project, this way:

In "ASValueTrackingSlider.h":

// ADD THESE TWO LINES
@property (nonatomic) float stepValue;
- (void)valueChanged;

In "ASValueTrackingSlider.m":

@interface ASValueTrackingSlider() <ASValuePopUpViewDelegate>

@property (strong, nonatomic) NSNumberFormatter *numberFormatter;
@property (strong, nonatomic) ASValuePopUpView *popUpView;
@property (nonatomic) BOOL popUpViewAlwaysOn; // (default is NO)
// THIS IS NEW:
@property (nonatomic) float lastQuestionStep;

@end

@implementation ASValueTrackingSlider
{
    CGSize _popUpViewSize;
    UIColor *_popUpViewColor;
    NSArray *_keyTimes;
    CGFloat _valueRange;
        // THIS IS NEW:
    float _lastQuestionStep;
}

 -(void)setup {
    // ...
    // THIS IS NEW
    if (0.0 == self.stepValue) self.stepValue = 1.0;
    _lastQuestionStep = (self.value) / self.stepValue;
    // ...
}

// ADD ALSO THIS METHOD
- (void)valueChanged {
  if (0.0 == self.stepValue) self.stepValue = 1.0;
  float newStep = roundf((self.value) / self.stepValue);
  self.value = newStep * self.stepValue;
}

valueChanged must be called from UITableViewController when the slider changes its value ( connect an action from slider in storyboard for Value Changed and name it sliderValueChanged)

In your UITableViewController class:

- (IBAction)sliderValueChanged:(id)sender {
  [self.slider valueChanged];
}

In viewDidLoad of your UITableViewController

- (void)viewDidLoad {
  [super viewDidLoad]
  // ...
  self.slider.minimumValue = 0.0;
  self.slider.maximumValue = 4.0;
  //THIS IS NEW:
  self.slider.stepValue = 1.0;
}

Greetings from Berlin Kenan.

If i try pod try ASValueTrackingSlider and try to build the xcode project i run in this failure. `error: could not read data from '/tmp/CocoaPods/Try/ASValueTrackingSlider/Example/ValueTrackingSliderTests/ValueTrackingSliderTests-Info.plist': The file “ValueTrackingSliderTests-Info.plist” couldn’t be opened because there is no such file.`` The same when i download the Project as zip and try to build the example project.

Cheers

I seem to have an app which is crashing with ASValueTrackingSlider. Setting the class of the slider to UISlider, it runs fine.

This is the error given during runtime:

"-[__NSCFType CGColor]: unrecognized selector sent to instance 0x12345678"

The instance is just a sample, that hex value changes every time.

Help?

Hi @alskipp,

Following the 0.9.1 update, I start to experience crash. Here is the output:

2014-05-08 16:56:34.278 TSA[12501:60b] *** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan 0]'
*** First throw call stack:
(
    0   CoreFoundation                      0x00000001031de495 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x0000000102db599e objc_exception_throw + 43
    2   CoreFoundation                      0x00000001031de2ad +[NSException raise:format:] + 205
    3   QuartzCore                          0x0000000101647cf6 _ZN2CA5Layer12set_positionERKNS_4Vec2IdEEb + 158
    4   QuartzCore                          0x0000000101647e77 -[CALayer setPosition:] + 44
    5   QuartzCore                          0x0000000101648544 -[CALayer setFrame:] + 856
    6   TSA                                 0x000000010010c36c -[ASValuePopUpView setArrowCenterOffset:] + 700
    7   TSA                                 0x000000010010fe00 -[ASValueTrackingSlider adjustPopUpViewFrame] + 688
    8   TSA                                 0x000000010010fa0b -[ASValueTrackingSlider positionAndUpdatePopUpView] + 43
    9   TSA                                 0x000000010010f8de -[ASValueTrackingSlider setup] + 1070
    10  TSA                                 0x000000010010e5e0 -[ASValueTrackingSlider initWithCoder:] + 160
    11  UIKit                               0x0000000101b4359c -[UIClassSwapper initWithCoder:] + 202
    12  UIKit                               0x0000000101c7f794 UINibDecoderDecodeObjectForValue + 678
    13  UIKit                               0x0000000101c7f95c UINibDecoderDecodeObjectForValue + 1134
    14  UIKit                               0x0000000101c7f4df -[UINibDecoder decodeObjectForKey:] + 94
    15  UIKit                               0x000000010192f956 -[UIView initWithCoder:] + 815
    16  UIKit                               0x0000000101c7f794 UINibDecoderDecodeObjectForValue + 678
    17  UIKit                               0x0000000101c7f95c UINibDecoderDecodeObjectForValue + 1134
    18  UIKit                               0x0000000101c7f4df -[UINibDecoder decodeObjectForKey:] + 94
    19  UIKit                               0x000000010192f956 -[UIView initWithCoder:] + 815
    20  UIKit                               0x0000000101b078a2 -[UITableViewCell initWithCoder:] + 68
    21  UIKit                               0x0000000101b4359c -[UIClassSwapper initWithCoder:] + 202
    22  UIKit                               0x0000000101c7f794 UINibDecoderDecodeObjectForValue + 678
    23  UIKit                               0x0000000101c7f4df -[UINibDecoder decodeObjectForKey:] + 94
    24  UIKit                               0x0000000101b4316c -[UIRuntimeConnection initWithCoder:] + 109
    25  UIKit                               0x0000000101c7f794 UINibDecoderDecodeObjectForValue + 678
    26  UIKit                               0x0000000101c7f95c UINibDecoderDecodeObjectForValue + 1134
    27  UIKit                               0x0000000101c7f4df -[UINibDecoder decodeObjectForKey:] + 94
    28  UIKit                               0x0000000101b427b6 -[UINib instantiateWithOwner:options:] + 891
    29  UIKit                               0x00000001019b144b -[UITableView _dequeueReusableViewOfType:withIdentifier:] + 302
    30  UIKit                               0x00000001019b16b6 -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:] + 44
    31  TSA                                 0x0000000100033984 -[DetailTableViewController tableView:cellForRowAtIndexPath:] + 7876
    32  UIKit                               0x00000001019bbf8a -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 348
    33  UIKit                               0x00000001019a1d5b -[UITableView _updateVisibleCellsNow:] + 2337
    34  UIKit                               0x00000001019b3721 -[UITableView layoutSubviews] + 207
    35  UIKit                               0x0000000101947993 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 354
    36  QuartzCore                          0x0000000101650802 -[CALayer layoutSublayers] + 151
    37  QuartzCore                          0x0000000101645369 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 363
    38  QuartzCore                          0x00000001016451ea _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
    39  QuartzCore                          0x00000001015b8fb8 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 252
    40  QuartzCore                          0x00000001015ba030 _ZN2CA11Transaction6commitEv + 394
    41  QuartzCore                          0x00000001015ba69d _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
    42  CoreFoundation                      0x00000001031a9dc7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    43  CoreFoundation                      0x00000001031a9d37 __CFRunLoopDoObservers + 391
    44  CoreFoundation                      0x0000000103189522 __CFRunLoopRun + 946
    45  CoreFoundation                      0x0000000103188d83 CFRunLoopRunSpecific + 467
    46  GraphicsServices                    0x0000000104becf04 GSEventRunModal + 161
    47  UIKit                               0x00000001018e7e33 UIApplicationMain + 1010
    48  TSA                                 0x000000010002ac33 main + 115
    49  libdyld.dylib                       0x00000001037635fd start + 1
    50  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

Do you have any idea of what's going on?

It is currently working fine with 0.9.0

Looking at ASValuePopUpView.h on master you have the a property that I need to update the arrow length:

@interface ASValuePopUpView : UIView

@property (nonatomic) CGFloat arrowLength;

However, using the latest Cocoapod, 0.10.1 (which points to tag 0.10.1), this property doesn't exist. Is there a plan to roll out this change in an updated Cocoapod soon?

Thanks!

The slider popup looks weird with custom fonts (e.g. small Roboto fonts). There should be a way (without modifying the source) to specify the size of the popup view, maybe by allowing clients to customize width/height padding factors.

Hi,

First of all, thanks for such useful lib :)

I wonder if there's a way to always keep the slider's popUpView visible (by default, it gets hidden once you stop interacting with the slider).

Thanks, Matheus

First of all, thank you very much for sharing this class! I've been looking for something like this for a while, but all solutions I came across were pretty outdated.

Anyway, I'm using a pretty small font (size 12) for the text in the popUpView, and the relative size IMO of the popUpView is too big for that. I was able to tweak it by decreasing the values of ARROW_LENGTH and MIN_POPUPVIEW_HEIGHT, and it looks much better proportionally. Is this maybe something that could be built in the class, eg by making those constants a property, or size them based on the font size?

When using custom strings with different lengths in popUpView label, if you slide from a long string to a shorter string, the long string remains appearing a bit while target popupview size is already drawn. It can be seen in your demo project.

Hello,

you have an option in your other project "ASProgressPopUpView" to write a string instead of a formatted number value. Is it possible to add this option to the "ASValueTrackingSlider" too?

Example from "ASProgressPopUpView":

• (NSString *)progressView:(ASProgressPopUpView *)progressView stringForProgress:(float)progress { NSString *s; if (progress < 0.2) { s = @"Just starting"; } else if (progress > 0.4 && progress < 0.6) { s = @"About halfway"; } else if (progress > 0.75 && progress < 1.0) { s = @"Nearly there"; } else if (progress >= 1.0) { s = @"Complete"; } return s; }

Thanks! Kenan.

Hi,

Currently when setting the slider to the min value or max value, the frame of the popup is adjusted to fit in bounds of the slider and therefore is rendered off center in regards to the thumb.

Could you look into a way to disable the adjustment? My design requirements need to have this popup aligned with the thumb on these values.

Thanks for your work on this lib.

Hi, First I like ASValueTrackingSlider.

But Its very difficult to drag slider to exact value example I want to set value to 15.00 value, for ASValueTrackingSlider 0.00 - 100.00 value its take lot of time to reach set 15.00 value.

If you return multiple line string with line brake "\n" in delegate, popup view will have implicit animations.

To fix it, modify line 93 in ASValuePopUpView.m _textLayer.actions = @{@"contents" : [NSNull null],@"bounds" : [NSNull null]};

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[ASValueTrackingSlider name]: unrecognized selector sent to instance 0x10218d2a0'