A component that simplifies creating of animated Apple Watch style pie charts similar to the ones used within the Activity app.

Quick Start

To use with your WatchKit extension:

• add a WKInterfaceImage into your storyboard exactly where you want the chart to appear (you can use a WKInterfaceGroup as well);

• make sure its Mode is set to 'Center' and Width and Height to 'Size To Fit Content';

• connect the image or a group with a corresponding property in your subclass of WKInterfaceController;

• import TTWKPieChart.h;

• create and configure a pie chart within your awakeWithContext: method, for example:

  // Create and configure the chart generator
  TTWKPieChart *pieChart = [[TTWKPieChart alloc] init];
  pieChart.radius = floorf([WKInterfaceDevice currentDevice].screenBounds.size.width * 0.45);
  pieChart.bandWidth = 14;
  // ...
  
  TTWKPieChartBand *band1 = [[TTWKPieChartBand alloc] init];
  band1.icon = [UIImage imageNamed:@"test-icon-1"];
  band1.caption = @"LOREM";
  band1.startColor = [UIColor colorWithRed:1.0000 green:0.0941 blue:0.0392 alpha:1.0];
  band1.endColor = [UIColor colorWithRed:1.0000 green:0.0275 blue:0.6392 alpha:1.0];
  band1.backgroundColor = [UIColor colorWithRed:0.1608 green:0.0314 blue:0.0667 alpha:1.0];
  band1.value = 0.86;
  // ...
  
  // Configure the text to display
  pieChart.largeText = [[NSAttributedString alloc]  initWithString:@"125"
  //...
  
  // Generate the animated image at 15 FPS, send it off to the device and begin animation
  _image = [pieChart animatedImageWithFrameRate:15];
  [self.chartImage setImage:_image];
  [self.chartImage startAnimatingWithImagesInRange:NSMakeRange(0, _image.images.count) duration:_image.duration repeatCount:1];
  

Please see the example project for a complete example.

Installation

Alternatively, you can simply drop in the classes from Pod/Classes into your project.

Author & License

TTWKPieChart is created by TouchTribe B.V. and is available under the MIT license. See the LICENSE file for more info.