The type of the message in Material Dialogs was switched from UILabel to UITextView, That is done in order to support links in attributed text. We're seeing some differences in the text rendering in dialog snapshots. In some cases, the width of the dialog may also change, which can result in some other elements moving to maintain required spacing from the edges. Based on our testing, we're not expecting any other changes, so please let us know if you find anything unusual.
This change set includes:
* `messageLabel` was renamed to `messageTextView`.
* The UITextView has its editable flag set to false, and all internal padding set to
zero, to ensure spacing remain the same as it was with UILabel.
* `scrollEnabled` was set to false to ensure text does't scroll when not needed (it
still enables scrolling when needed: when there's more text than the visible area.)
* `backgroundColor` was set to `clear`. It seems UITextView's default is white, which
breaks inverted/dark mode support.
Noticeable differences:
* `sizeThatFits` occasionally returns different width for some texts:
-- Some texts result in a wider layout (ie: dialogs-presented-with-emphasis-buttons.png)
-- Empty text views may have a non-zero height. Determining zero
size based on `hasText` before calling `sizeThatFits` resolved the issue.
* Text rendering is slightly different in almost all snapshots.
* Links in attributed texts are rendered differently then before (ie: color).
* In a couple of RTL snapshot tests, I needed to set the RTL test direction before
setting the message alignment for the test to work properly.
PiperOrigin-RevId: 313607718
This CL demonstrates three different ways to present a message with a "Learn More" button under it in an alert. It also demonstrates accessory views with manual and auto layouts.
The 2 auto-layout tests create a view with a label and a button as subviews, and lay them out using constraints. One of them is testing a subclass, while the other adds the button/text directly to the accessory view.
The manual layout test uses the alert's default message property, and uses a button for the accessory view. It then uses the new 'accessoryViewVerticalInset' to customize the space between the message and the button.
Note: Using `sizeToFitContentInBounds:` for snapshot tests is now correctly resizing snapshot tests that were previously too wide (including the snapshot in b/147241131).
PiperOrigin-RevId: 307884732
