Читать книгу iPhone Portable Genius - Paul McFedries, Paul McFedries - Страница 19

There are a few maneuvers that you need to be familiar with to successfully use the touchscreen in all its glory. Take some time to try these now. I'll refer to these gestures throughout the rest of the book, so play around and make sure you understand them:

 Tap. This means you use your finger to quickly press and release the screen where desired. This gesture is what you use to initiate just about any action on the iPhone. This opens applications, activates options, enters text boxes, and much more.

 Press. This means you apply pressure to the screen to activate the 3D Touch feature available on some iPhones. A light press on a screen object (such as a Home screen icon) activates that object's Peek feature, which either gives you a sneak peek of the object or displays commands that you can run on the object. If you then release the screen, iOS takes you back to where you were. Otherwise, a slightly harder press on the screen object activates the object's Pop feature, which takes you into the object's app.Note3D Touch is available on iPhone models 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, X, XS, and XS Max. iPhone models XR, SE (2nd edition), 11, 11 Pro, 11 Pro Max, 12, 12 mini, 12 Pro, and 12 Pro Max all replace 3D Touch with Haptic Touch, which recognizes a long press (that is, a press that lasts a few seconds) instead of actual screen pressure.

 Double‐tap. This is what it sounds like: two quick taps with your finger. In applications such as Photos or Safari, it zooms in on images or chunked parts of web pages. A second double‐tap zooms back out.

 Swipe and flick. To swipe means to drag your finger across the screen. You use this technique to scroll through lists, drag items to different spots, and unlock the iPhone. Flicking is just an exaggerated swipe. This rapidly scrolls through lists. Flick your finger up and down (or sometimes left and right) on the screen and the iPhone rapidly scrolls through the list. The faster the flick, the faster the scroll. Touch the screen to stop the scrolling process.

 Spread and pinch. You use these techniques to zoom in on or out of the screen. To spread means to move two fingers apart, and you use it to zoom in; to pinch means to move two fingers closer together, and you use it to zoom out. This is especially useful when viewing web pages because the text is often too small to read. Spread to zoom in on the text, making it readable, and pinch to return to the full screen for easy scrolling and navigation.