Alright guys, let's talk about the status bar. You have definitely seen it is that little thing at the top of the iPhone screen, and it displays useful information about the devices current state, such as the time carrier network status and battery level. The actual information shown in the status bar bar is dependent on user's own configuration. By default, the background of the status bar is transparent, allowing content beneath to show through. In some cases, you can keep it transparent, like I have in this example. However, in most cases, you're supposed to obscure the content under the status bar.
As you should keep the status bar content readable and you should also not imply that the content behind it is interactive. There are several common techniques for doing this. Using the navigation bar in your app, which automatically displays a status bar background ensures the content doesn't appear onto the status bar. This is a popular way. And that's why we see so many apps today. With the status bar having the same background as an app bar.
You could display a custom image such as the gradient or solid color behind the status bar. Or you could apply a blur to the content behind the status bar. Coordinate the status bar style with your app design. visual style of the status bars, text and indicators is either light or dark. The color depends on the background. And obviously enough, you just need to have enough contrast.
So you have a light background, the content needs to be dark. If you have a dark background content needs to be light. The standard content color is the regular black or the regular white, but you can choose other colors as well. Not that the colors can be set globally for your app or individually for different strings. The stuff is parsed is fixed at the top of the screen no matter what the content might scroll, the navigation bar might disappear, but the status bar stays put. Now, the status bar can be removed, but it's not recommended.
In most cases, the games can get away with it, because people want to get the most immersive experience when it comes to games. But if you're designing the regular app, though, stay safe and keep the status bar. But you should hide the status bar together with the whole UI. When users are viewing some fullscreen media, like photos or videos, just make sure you show it again on top or any other touch gesture, unless that specific gesture is used for something else, like swiping between the fullscreen photos for example. Another small thing to mention, the network activity indicator might appear in the status bar. When your app is accessing the network for more than two seconds.
If your app is using the location services and user has navigated away, the iOS will remind user of that. But showing in the status bar that your app is using the user's location. They the iOS nine, a back to previous app button appears in the status bar. This button is handy and ready to take you right back to any previous app you were working with. These button appears when you're taken away to another app by tapping on the push notification, as well as in cases of app to app linking and the new homescreen search. This behavior is provided automatically to both first and third party apps.
The button is controlled at the system level. And apps cannot create or manage its behavior. There are some ways that you can influence it, but it's beyond the scope of this course. They don't want to go way too far into programming here. Do a last thing to mention about these back button thing. If a user is routed from one app to another app, and then to a third app, the first apps back button state is discarded.
You can also change the background color and have a return action in the status bar that looks like these. If there is an important an ongoing activity happening right now with your app. Lastly, do not create any custom status bars. Always use just a bridge design standard is status bar, because people rely on it and expect consistency.