fix statusBar appearance in iOS7

Author: ChrisXu

CXAlertView/CXAlertView.m

@@ -258,6 +258,10 @@ - (void)show
     CXAlertViewController *viewController = [[CXAlertViewController alloc] initWithNibName:nil bundle:nil];
     viewController.alertView = self;
 
+    if ([self.oldKeyWindow.rootViewController respondsToSelector:@selector(prefersStatusBarHidden)]) {
+        viewController.rootViewControllerPrefersStatusBarHidden = self.oldKeyWindow.rootViewController.prefersStatusBarHidden;
+    }
+    
     if (!self.alertWindow) {
         UIWindow *window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
         window.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

CXAlertView/CXAlertViewController.h

@@ -13,4 +13,6 @@
 
 @property (nonatomic, strong) CXAlertView *alertView;
 
+@property (nonatomic, assign) BOOL rootViewControllerPrefersStatusBarHidden;
+
 @end

CXAlertView/CXAlertViewController.m

@@ -64,5 +64,8 @@ - (BOOL)shouldAutorotate
 {
     return YES;
 }
-
+- (BOOL)prefersStatusBarHidden
+{
+    return _rootViewControllerPrefersStatusBarHidden;
+}
 @end

CXAlertViewDemo/CXAlertViewDemo/CXAlertViewDemo-Info.plist

@@ -17,11 +17,11 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.0</string>
+	<string>1.0.1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>1.0.0</string>
+	<string>1.0.1</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>UIRequiredDeviceCapabilities</key>

CXAlertViewDemo/CXAlertViewDemo/CXViewController.m

@@ -110,6 +110,11 @@ - (void)viewDidAppear:(BOOL)animated
     [alertView show];
 }
 
+- (BOOL)prefersStatusBarHidden
+{
+    return YES;
+}
+
 - (IBAction)showSquenceAlertView:(id)sender
 {
     // This is a demo for poping up two alertview.