PeekView

When implementing peek, pop and preview actions with 3D Touch, you may want to support such features for users accessing your app from older devices that don't provide 3D Touch capibility. PeekView hence can be used as an alternative in such case.

(Please ignore the low resolution of the GIF. Try the demo for actual experience.)

Note

Things that need improving

• Better solution for Objective-C integration (the current is sort of hacky!)
• Better documenting in code
• Content view panned: Smoother animation
• Action style: Selected functionality
• More customizable UI if needed (requests are welcome)
• Bug fixes if any

Requirements

• iOS 8 and later
• Swift 5 & Xcode 10.2
• If you wish to work with Swift 2.3, check out branch swift23

Getting Started

Install using CocoaPods

Just add the following line in to your pod file:

pod 'PeekView'

Manual Install

Drag and drop folder named Source in your project and you're done.

Usage

• Add UILongPressGestureRecognizer to the view you want to peek (i.e table view cell, image, hypertext, etc.)
• Create a UIViewController instance as the content of your peek view; then set your desired frame for the content view. It's recommended to leave a 15px padding for both left and right margin of your content view.
• If you want to include preview actions, prepare an array containing title of the buttons and its preview style. Don't forget to prepare completion handlers for when each button is tapped.

Sample snippet:

  let options = [ 
    PeekViewAction(title: "Option 1", style: .Destructive), 
    PeekViewAction(title: "Option 2", style: .Default), 
    PeekViewAction(title: "Option 3", style: .Selected) ]
  PeekView().viewForController(
  parentViewController: self, 
  contentViewController: controller, 
  expectedContentViewFrame: frame, 
  fromGesture: gestureRecognizer, 
  shouldHideStatusBar: true, 
  withOptions: options, 
  completionHandler: { optionIndex in
                    switch optionIndex {
                    case 0:
                        print("Option 1 selected")
                    case 1:
                        print("Option 2 selected")
                    case 2:
                        print("Option 3 selected")
                    default:
                        break
                    }
                })

Be sure to check out the demo code for better understanding of the usage.

As for Objective-C integration, a slightly different static function should be used, in which the menuOptions array is expected to be an NSArray of NSDictionary's. Please check the snippet below:

    NSArray *options = @[@{@"Option 1": @(PeekViewActionStyleDefault)},
                         @{@"Option 2": @(PeekViewActionStyleDestructive)}];
    
    UIViewController *contentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"previewVC"];
    
    [PeekView viewForControllerWithParentViewController:self
                                  contentViewController:contentViewController
                               expectedContentViewFrame:CGRectMake(0, 0, 280, 400)
                                            fromGesture:gesture
                                    shouldHideStatusBar:YES
                                            withOptions:options
                                      completionHandler:nil];

ARC

PeekView uses ARC. If you are using PeekView in a non-arc project, you will need to set a -fobjc-arc compiler flag on every PeekView source files. To set a compiler flag in Xcode, go to your active target and select the "Build Phases" tab. Then select PeekView source files, press Enter, insert -fobjc-arc and then "Done" to enable ARC for PeekView.

Contributing

Contributions for bug fixing or improvements are welcome. Feel free to submit a pull request.

Licence

PeekView is available under the MIT license. See the LICENSE file for more info.