Many thanks to @ZevEisenberg

MRoundedButton

MRoundedButton is a subclass of UIControl and the appearance is like the iOS 7 Phone app button or the button on the Control Center and also perform fade in/out animation for touch event.

Four button styles are suplied:

MRoundedButtonDefault           //  central text
MRoundedButtonSubtitle          //  text with subtitle 
MRoundedButtonCentralImage      //  central image
MRoundedButtonImageWithSubtitle //  image with subtitle

To set a transparent border:

MRoundedButton *button = [[MRoundedButton alloc] initWithFrame:#<BUTTON_FRAME>
                                                   buttonStyle:#<BUTTON_STYLE>];
button.borderWidth = 2;
button.borderColor = [UIColor clearColor];

The value of borderWidth and cornerRadius are limited to MIN(BUTTON_WIDTH / 2, BUTTON_HEIGHT / 2). Setting the cornerRadius to FLT_MAX or MRoundedButtonMaxValue can easily make a round button.

CocoaPods

platform :ios, '6.0'
pod "MRoundedButton", "~> 1.0"

The 1.1 version is not CocoaPods ready, can download it from here

MRoundedButtonAppearanceManager

MRoundedButtonAppearanceManager is the appearance manager for MRoundedButton, each appearance information can be stored in a NSDictionary object to make it reusable in the whole project:

NSDictionary *appearanceProxy = @{kMRoundedButtonCornerRadius : @40,
                                  kMRoundedButtonBorderWidth  : @2,
                                  kMRoundedButtonBorderColor  : [UIColor clearColor],
                                  kMRoundedButtonContentColor : [UIColor blackColor],
                                  kMRoundedButtonContentAnimationColor : [UIColor whiteColor],
                                  kMRoundedButtonForegroundColor : [UIColor whiteColor],
                                  kMRoundedButtonForegroundAnimationColor : [UIColor clearColor]};
[MRoundedButtonAppearanceManager registerAppearanceProxy:appearanceProxy1 forIdentifier:#<UNIQUE_IDENTIFIER>];

MRHollowBackgroundView

MRHollowBackgroundView can be used to place the MRoundedButton on an image view or something.

In the drawRect: method, each subview of HRHollowView will be cliped to its bounds by CGContextEOFillPath(). Then the superview can be displayed from the hollowed shapes.

Requirement

• iOS 6.0+

Release Notes

• Ver 1.0
  • First Commit
• Ver 1.1
  • Make it easy to hightlight the button via setSelected:
  • Add disabled appearance when set enabled to NO, need to be improved
  • Changed some properties name to make it easy to be understood
  • Fixed userInteractionEnabled issue

TODO

• Disable appearance

License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.