hujunfeng · March 20, 2019 14:20 · Sep 21, 2013 · Sep 21, 2013 · Sep 21, 2013 · Sep 21, 2013
diff --git a/ios7statusbar.md b/ios7statusbar.md
@@ -12,7 +12,7 @@
 
 * If there is no navigation bar below the status bar, the status bar style can be controlled and changed by an individual view controller while the app runs.
 
-  `-[UIViewController preferredStatusBarStyle]` is a new method added in iOS 7. It can be overridden to return one type of status bar style:
+  `-[UIViewController preferredStatusBarStyle]` is a new method added in iOS 7. It can be overridden to return the preferred status bar style:
 
 		- (UIStatusBarStyle)preferredStatusBarStyle
 		{

diff --git a/ios7statusbar.md b/ios7statusbar.md
@@ -10,7 +10,7 @@
 
   Specifically, if the navigation bar style is `UIBarStyleDefault`, the status bar style will be `UIStatusBarStyleDefault`; if the navigation bar style is `UIBarStyleBlack`, the status bar style will be `UIStatusBarStyleLightContent`.
 
-* If there is no navigation bar below the status bar, the status bar style can be controlled and changed by an individual view controller while the apps.
+* If there is no navigation bar below the status bar, the status bar style can be controlled and changed by an individual view controller while the app runs.
 
   `-[UIViewController preferredStatusBarStyle]` is a new method added in iOS 7. It can be overridden to return one type of status bar style:
 

diff --git a/ios7statusbar.md b/ios7statusbar.md
@@ -1,10 +1,10 @@
-#### `UIStatusBarStyle` in iOS 7
+### `UIStatusBarStyle` in iOS 7
 
 * The status bar in iOS 7 is transparent, the view behind it shows through.
 
 * The style of the status bar refers to the appearances of its content. In iOS 7, the status bar content is either dark (`UIStatusBarStyleDefault`) or light (`UIStatusBarStyleLightContent`). Both `UIStatusBarStyleBlackTranslucent` and `UIStatusBarStyleBlackOpaque` are deprecated in iOS 7.0. Use `UIStatusBarStyleLightContent` instead.
 
-#### How to change `UIStatusBarStyle`
+### How to change `UIStatusBarStyle`
 
 * If below the status bar is a navigation bar, the status bar style will be adjusted to match the navigation bar style (`UINavigationBar.barStyle`):
 

diff --git a/ios7statusbar.md b/ios7statusbar.md
@@ -0,0 +1,24 @@
+#### `UIStatusBarStyle` in iOS 7
+
+* The status bar in iOS 7 is transparent, the view behind it shows through.
+
+* The style of the status bar refers to the appearances of its content. In iOS 7, the status bar content is either dark (`UIStatusBarStyleDefault`) or light (`UIStatusBarStyleLightContent`). Both `UIStatusBarStyleBlackTranslucent` and `UIStatusBarStyleBlackOpaque` are deprecated in iOS 7.0. Use `UIStatusBarStyleLightContent` instead.
+
+#### How to change `UIStatusBarStyle`
+
+* If below the status bar is a navigation bar, the status bar style will be adjusted to match the navigation bar style (`UINavigationBar.barStyle`):
+
+  Specifically, if the navigation bar style is `UIBarStyleDefault`, the status bar style will be `UIStatusBarStyleDefault`; if the navigation bar style is `UIBarStyleBlack`, the status bar style will be `UIStatusBarStyleLightContent`.
+
+* If there is no navigation bar below the status bar, the status bar style can be controlled and changed by an individual view controller while the apps.
+
+  `-[UIViewController preferredStatusBarStyle]` is a new method added in iOS 7. It can be overridden to return one type of status bar style:
+
+		- (UIStatusBarStyle)preferredStatusBarStyle
+		{
+			return UIStatusBarStyleLightContent;
+		}
+
+* If the status bar style should be controlled by a child view controller instead of `self`, override `-[UIViewController childViewControllerForStatusBarStyle]` to return that child view controller.
+
+* If you prefer to opt out of this behavior and set the status bar style by using the `-[UIApplication statusBarStyle]` method, add the `UIViewControllerBasedStatusBarAppearance` key to an app’s Info.plist file and give it the value `NO`.