iOS 8: the little things

Let's talk about the smaller features in iOS 8 and Xcode 6.
Slides from my talk at Ottawa Cocoaheads, Sept 11.

Some features stolen from nshipster.com, Erica Sadun and Xamarin posts.

Transcript

1. iOS 8 & Xcode 6: the little things
2. We won't talk about: —HealthKit —HomeKit —Touch ID —Extensions —CloudKit —Handoff —Metal
3. What about the small things?
4. Checking your OS version NSOperatingSystemVersion(majorVersion: 10, minorVersion: 10, patchVersion: 0) NSProcessInfo().isOperatingSystemAtLeastVersion(y osemite)
5. UITouches now have a radius property UITouch *touch = [touches lastObject]; touch.majorRadius; // 20 Also includes majorRadiusTolerance, a +- range per screen
6. Constraints You can now activate and deactivate constraints! Instead of just top and bottom, you can now add constraints linked to top, bottom, left, and right margins.
7. UIAlertController No more UIAlertView or UIActionSheet + (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)message preferredStyle:(UIAlertControllerStyle)preferredStyle preferredStyle: - UIAlertControllerStyleActionSheet - UIAlertControllerStyleAlert
8. Core Image includes more feature detection —CIDetectorTypeFace —CIDetectorTypeRectangle —CIDetectorTypeQRCode NSArray *features = [detector featuresInImage:image];
9. So much SpriteKit, it's amazing —SKConstraints, orientation, limit position —Pixel perfect physics bodies, SKPhysicsBody bodyWithTexture:node.texture
10. CollectionView enhancements —set EstimatedItemSize in a flow layout to self size cells —PreferredLayoutAttributesFittingAttributes lets you override layout for individual cells
11. Open settings URL [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]; UIApplicationOpenSettingsURLString
12. UINavigationController settings to hide the navigation bar —hidesBarsOnSwipe —hidesBarsWhenVerticallyCompact —hidesBarsWhenKeyboardAppears —navigationBarHidden —barHideOnTapGestureRecognizer —barHideOnSwipeGestureRecognizer
13. UIVisualEffect Can make a blur or 'vibrancy' effect to view in a UIVisualEffectView [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
14. Now, Xcode!
15. View Debugging Debug menu -> View Debugging -> Capture View Hierarchy
16. Asset libraries take more formats —pdf —jpeg —vector files?
17. Search within storyboards! Highlights matches in the storyboard, and opens the hierarchy to the right point. Finds: - image names - labels - text - custom classes Also, global search includes storyboards
18. Performance testing - (void)testPerformance { [self measureBlock:^{ // Slow stuff }]; } Gives you ten runs, average and standard deviation from previous
19. Asynchronous testing - (void)testAsync { XCTestExpectation *asyncExpectation = [self expectationWithDescription:@"Async test"]; [manager doSomethingAsynchronousSuccess:^(id response) { [asyncExpectation fulfill]; XCTAssertNotNil(responseObject, @"No data returned"); } failure:^(id response) { [asyncExpectation fulfill]; XCTFail(@"Fetch failed with error: %@", [error description]); }]; [self waitForExpectationsWithTimeout:5 handler:nil]; }
20. Async testing, and performance testing - (void)testAwesome { [self measureBlock:^{ XCTestExpectation *fetchExpectation = [self expectationWithDescription:@"Async test"]; [manager POST:request parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) { [fetchExpectation fulfill]; XCTAssertNotNil(responseObject, @"No data returned"); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { [fetchExpectation fulfill]; XCTFail(@"Fetch failed with error: %@", [error description]); }]; [self waitForExpectationsWithTimeout:5 handler:nil]; }]; }
21. Launch screen file Support all device sizes with a storyboard to replace your launch images This disables scaling for iPhone 6 and 6 plus!
22. Thank you!
23. Steven Thompson Brierwood Design Co-operative @stevethomp