MSCollectionViewCalendarLayout is a
UICollectionViewLayout subclass for displaying chronological data. It divides its cells into columns of days, with the size of each cell corresponding to its length.
MSCollectionViewCalendarLayout is very similar to the "Week" view in the Apple Calendar/iCal app. See the example screenshots for what this looks like.
UICollectionView is awesome. If you're unfamiliar, read Mattt Thompson's excellent article about them on NSHipster. Everyone should use them (yes, even instead of good ol'
UITableView). This is especially true now that iOS 6+ adoption is over 90% (As of March, 2013). It's the right thing to do.
Because of how awesome
UICollectionView is, the
UIViewController powering the below example is incredibly thin—only about 175 lines of code, including whitespace.
The example project queries the SeatGeek API for the next 1000 sport events near Denver, Colorado. It displays these events in a
MSCollectionViewCalendarLayout, mimicking the look and feel of the Apple Calendar iOS App. To run, build and run the
Example target in from
Example.xcworkspace within the
Add the following to your
Podfile and run
$ pod install.
If you don't have CocoaPods installed, you can learn how to do so here.
If you change the content of your
MSCollectionViewCalendarLayout, make sure to call the
invalidateLayoutCache method. This flushes the internal caches of your
MSCollectionViewCalendarLayout, allowing the data to be repopulated correctly.
On the iPhone,
MSCollectionViewCalendarLayout defaults to tiling its day sections vertically. The day column headers act as they do in a table view, sticking to the top until they're replaced by the next day's as your scroll. On the iPad, the day sections are tiled horizontally. This behavior is controlled by the
sectionLayoutType property. Its values can be:
MSSectionLayoutTypeHorizontalTile– Day sections tile vertically.
MSSectionLayoutTypeVerticalTile– Day sections tile horizontally.
Collection View Elements
MSCollectionViewCalendarLayout has nine different elements that you should register
UICollectionViewCell classes for. They are:
- Event Cell (
UICollectionViewCell) – Represents your events.
- Day Column Header (
UICollectionReusableView) – Contains the day text, top aligned.
- Time Row Header (
UICollectionReusableView) – Contains the time text, left aligned.
- Day Column Header Background (
UICollectionReusableView) – Background of the day column header.
- Time Row Header Background (
UICollectionReusableView) – Background of the time row header.
- Current Time Indicator (
UICollectionReusableView) – Displayed over the time row header, aligned at the current time.
- Current Time Horizontal Gridline (
UICollectionReusableView) – Displayed under the cells, aligned to the current time.
- Horizontal Gridilne (
UICollectionReusableView) – Displayed under the cells, aligns with its corresponding time row header.
- Vertical Gridilne (
UICollectionReusableView) – Displayed under the cells, aligns with its corresponding day column header.
If you think there should be more of these, don't hesitate to add them in a pull request. To see how this is done, check the example.
Can I call performBatchUpdates:completion: to make stuff animate?
Don't do this. It doesn't work properly, and is a "bag of hurt".
Requires iOS 6.0+ and ARC.
Forks, patches and other feedback are welcome.
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