iPhone : Cacher / montrer la Barre d'outils

Tenant compte de l'information - qu'il n'y a pas de UINavigationController - les choses sont différentes. Voici les bits à partir de mon code...

Créer la barre de navigation et l'ajouter à votre vue:

//Create the navigation bar

self.navBar = [[UINavigationBar alloc] init];
[self.view addSubview:self.navBar];

Étalez..

- (CGRect)frameForOrientation:(UIInterfaceOrientation)theOrientation
{
UIScreen *screen = [UIScreen mainScreen];
CGRect fullScreenRect = screen.bounds;      //always implicitly in Portrait orientation.
CGRect appFrame = screen.applicationFrame;
//Find status bar height by checking which dimension of the applicationFrame is narrower than screen bounds.
//Little bit ugly looking, but it'll still work even if they change the status bar height in future.
float statusBarHeight = MAX((fullScreenRect.size.width - appFrame.size.width), (fullScreenRect.size.height - appFrame.size.height));
//Initially assume portrait orientation.
float width = fullScreenRect.size.width;
float height = fullScreenRect.size.height;
//Correct for orientation.
if (UIInterfaceOrientationIsLandscape(theOrientation)) {
width = fullScreenRect.size.height;
height = fullScreenRect.size.width;
}
//Account for status bar, which always subtracts from the height (since it's always at the top of the screen).
height -= statusBarHeight;
return CGRectMake(0, statusBarHeight, width, height);
}
- (CGSize)viewSizeForOrientation:(UIInterfaceOrientation)theOrientation
{
CGRect frame = [self frameForOrientation:theOrientation];
return CGSizeMake(frame.size.width, frame.size.height);
}
- (void)layoutSubviewsForInterfaceOrientation:(UIInterfaceOrientation)theOrientation withAnimation:(BOOL)animate
{
CGSize fullSize = [self viewSizeForOrientation:theOrientation];
float width = fullSize.width;
float height = fullSize.height;
CGRect newFrame = CGRectMake(0, 0, width, height);
SubViewController *controller;
UIView *theView;
//Place the navigation bar
CGRect navBarFrame = newFrame;
navBarFrame.size.height = NAVBARHEIGHT;
self.navBar.frame = navBarFrame;
}

Créer une fonction à qui il/masquer:

- (void)showNavigationBar:(BOOL)show
{
if (show == YES && self.navBar.hidden == YES) {
//Move the frame out of sight
CGRect frame = self.navBar.frame;
frame.origin.y = -frame.size.height;
self.navBar.frame = frame;
//Display it nicely
self.navBar.hidden = NO;
frame.origin.y = 0.0;
[self.view bringSubviewToFront:self.navBar];
[UIView animateWithDuration:0.3
animations:^(void) {
self.navBar.frame = frame;
}
];
}
else if (show == NO && self.navBar.hidden == NO) {
CGRect frame = self.navBar.frame;
//Display it nicely
frame.origin.y = -frame.size.height;
[self.view bringSubviewToFront:self.navBar];
[UIView animateWithDuration:0.3
animations:^(void) {
self.navBar.frame = frame;
}
completion:^(BOOL finished) {
self.navBar.hidden = YES;
}
];
}
}

où

#define NAVBARHEIGHT 44

OriginalL'auteur tarmes

Voici quelques-uns des tarmes du code porté à MonoTouch/c#.

    public static RectangleF FrameForOrientation(UIInterfaceOrientation orientation) {
var screen = UIScreen.MainScreen;
var fullScreenRect = screen.Bounds;      //always implicitly in Portrait orientation.
var appFrame = screen.ApplicationFrame;
//Find status bar height by checking which dimension of the applicationFrame is narrower than screen bounds.
//Little bit ugly looking, but it'll still work even if they change the status bar height in future.
var statusBarHeight = Math.Max((fullScreenRect.Width - appFrame.Width), (fullScreenRect.Height- appFrame.Height));
//Initially assume portrait orientation.
var width = fullScreenRect.Width;
var height = fullScreenRect.Height;
//Correct for orientation.
if (IsLandscapeOrientation(orientation)) {
width = fullScreenRect.Height;
height = fullScreenRect.Width;
}
//Account for status bar, which always subtracts from the height (since it's always at the top of the screen).
height -= statusBarHeight;
return new RectangleF(0, statusBarHeight, width, height);
}
public static SizeF SizeForOrientation(UIInterfaceOrientation orientation) {
var frame = FrameForOrientation(orientation);
return new SizeF(frame.Width, frame.Height);
}
public static bool IsLandscapeOrientation(UIInterfaceOrientation orientation) {
return 
orientation == UIInterfaceOrientation.LandscapeLeft ||
orientation == UIInterfaceOrientation.LandscapeRight;
}

OriginalL'auteur Herman Schoenfeld