我正在使用Orientation为iPad编写应用程序。 App-Delegate.h有一个窗口，一个UIViewController，一个UINavigationController和一个UITabbarController：
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet LoginRVC *loginRVC;
@property (nonatomic, retain) IBOutlet ChooseCameraRVC *chooseCameraRVC;
@property (nonatomic, retain) IBOutlet UITabBarController *hauptRVC;
每个控制器使用“shouldAutorotateToInterfaceOrientation”方法自动旋转。
我使用以下方式更改视图：
[UIView beginAnimations:nil context:NULL];
然后
[loginRVC.view removeFromSuperview];
[_window addSubview:chooseCameraRVC.view];
和另一种方式，ofc。
所以我的问题是，当我在第二个视图（chooseCameraRVC）并切换方向时，然后回到我的第一个视图，它没有旋转。它会自动旋转，但在动画完成后。
我尝试过很多东西，例如调用所有视图的“shouldAutorotateToInterfaceOrientation”方法，而不是从窗口删除视图......但直到现在都没有成功。
这可能是模拟器的“功能”吗？ （我希望不会）。
请帮助我。 SHARKY
确定。我准备好了我的源代码。
注意：我没有复制只有[super ...]的方法或完全注释掉的方法。
首先是AppDelegate.h：
#import <UIKit/UIKit.h>
#import "ChooseCameraRVC.h"
#import "LoginRVC.h"
@interface NetCoWatchAppDelegate : NSObject <UIApplicationDelegate>
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet LoginRVC *loginRVC;
@property (nonatomic, retain) IBOutlet ChooseCameraRVC *chooseCameraRVC;
-(void)changeView:(id)sender:(BOOL)direction;
@end
AppDelegate.m：
#import "NetCoWatchAppDelegate.h"
#import "LoginRVC.h"
#import "ChooseCameraRVC.h"
#import "ChooseCameraVC.h"
@implementation NetCoWatchAppDelegate
@synthesize window = _window;
@synthesize loginRVC, chooseCameraRVC;
-(void)changeView:(id)sender:(BOOL)direction{
//configure animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:2];
if(sender == loginRVC){ //sender is LoginView
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:_window cache:YES];
[loginRVC.view removeFromSuperview];
[_window addSubview:chooseCameraRVC.view];
}else if(sender == chooseCameraRVC){
[chooseCameraRVC.view removeFromSuperview];
if(!direction){ //FlipFromRight = YES, ...left = NO
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:_window cache:YES];
[_window addSubview:loginRVC.view];
}
}else if([sender class] == [ChooseCameraVC class]){
[chooseCameraRVC.view removeFromSuperview];
if(!direction){ //Camera gewählt //FlipFromRight = YES, ...left = NO
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:_window cache:YES];
[_window addSubview:loginRVC.view];
}
}else { //default solution
UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"Bad Value" message:[[sender class] description] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[av show];
[av release];
}
[UIView commitAnimations]; //start animation
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.
// Add the navigation controller's view to the window and display.
[self.window makeKeyAndVisible];
return YES;
}
- (void)dealloc
{
[_window release];
[loginRVC release];
[chooseCameraRVC release];
[super dealloc];
}
@end
LoginRVC.h：
#import <UIKit/UIKit.h>
@interface LoginRVC : UIViewController <UITextFieldDelegate>{
NSMutableArray *usernameArray;
NSMutableArray *passwordArray;
}
@property (nonatomic, retain) IBOutlet UITextField *usernameTF;
@property (nonatomic, retain) IBOutlet UITextField *passwordTF;
@property (nonatomic, retain) IBOutlet UIButton *loginBn;
@property (nonatomic, retain) IBOutlet UISwitch *saveUsernameSwitch;
-(IBAction)tryLogin:(id)sender;
-(IBAction)closeKeyboard:(id)sender;
@end
LoginRVC.m：
#import "LoginRVC.h"
#import "NetCoWatchAppDelegate.h"
@implementation LoginRVC
@synthesize usernameTF, passwordTF, loginBn, saveUsernameSwitch;
-(IBAction)tryLogin:(id)sender{
//login successful if the textfields are euqal with an existing account
#warning Access the data base and search for the account.
bool accountFound = NO;
for (int i=0; i<usernameArray.count; i++) {
if([[usernameArray objectAtIndex:i] isEqualToString:usernameTF.text]
&& [[passwordArray objectAtIndex:i] isEqualToString:passwordTF.text]){
accountFound = YES;
break;
}
}
if(accountFound)
{ //login successful - now change the values and then the view
if(![saveUsernameSwitch isOn])
usernameTF.text = @"";
passwordTF.text = @"";
NetCoWatchAppDelegate *main = (NetCoWatchAppDelegate*)[[UIApplication sharedApplication] delegate];
[main changeView:self:YES];
}else{ //login failt - show a popup window for the user
UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"Login fehlgeschlagen" message:@"Username oder Passwort falsch!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[av show];
[av release];
}
}
-(IBAction)closeKeyboard:(id)sender{
if([passwordTF isFirstResponder])
[passwordTF resignFirstResponder];
else
[usernameTF resignFirstResponder];
}
// this helps dismiss the keyboard then the "done" button is clicked
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if(textField == usernameTF){ //move to password textfield
[textField resignFirstResponder];
[passwordTF becomeFirstResponder];
}else if(textField == passwordTF){ //textField == passwordTF -> try to login
[textField resignFirstResponder];
[self tryLogin:self];
}
return YES;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.textFieldRounded.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support
#warning Define right keyboard type.
usernameArray = [[NSMutableArray alloc] initWithObjects:@"dkoehn", @"bmazanek", @"sbehne", @"mballhausen", @"efiedler", @"bbraasch", @"azuber", @"tstolt", nil];
passwordArray = [[NSMutableArray alloc] initWithObjects:@"test1",@"test2",@"test3",@"test4",@"test5",@"test6",@"test7",@"test8", nil];
// usernameTF.keyboardType = UIKeyboardTypeEmailAddress;
[usernameTF becomeFirstResponder]; //get first focus when the app stars
//set return key on the keyboard and the delegate for an action
usernameTF.returnKeyType = UIReturnKeyNext; // type of the return key
passwordTF.returnKeyType = UIReturnKeyGo;
//set delegate to connect with a method "-(BOOL)textFieldShouldReturn:(UITextField *)textField"
usernameTF.delegate = self;
passwordTF.delegate = self;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
@end
ChooseCameraRVC.h：
#import <UIKit/UIKit.h>
@interface ChooseCameraRVC : UINavigationController <UINavigationControllerDelegate>
@property (nonatomic, retain) IBOutlet UIBarButtonItem *zurueckBN;
-(IBAction)exitToLoginView:(id)sender;
@end
ChooseCameraRVC.m：
#import "ChooseCameraRVC.h"
#import "NetCoWatchAppDelegate.h"
#import "ChooseCameraCell.h"
@implementation ChooseCameraRVC
@synthesize zurueckBN;
-(IBAction)exitToLoginView:(id)sender{
#warning Eventually logout the User.
//change the view
[((NetCoWatchAppDelegate*)[[UIApplication sharedApplication] delegate]) changeView:self:NO];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
@end
ChooseCameraVC.h：
#import <UIKit/UIKit.h>
@interface ChooseCameraVC : UITableViewController <UITableViewDelegate>
@end
和ChooseCameraVC.m：
#import "ChooseCameraVC.h"
#import "ChooseCameraCell.h"
#import "NetCoWatchAppDelegate.h"
@implementation ChooseCameraVC
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Customize the number of sections if grouped.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
#warning Get count of cameras out of the data base.
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
// Configure the cell...
cell.textLabel.text = @"Camera";
return cell;
}
@end
我希望你能找到问题。
问候。 $ H @ RKY
答案 0 :(得分：2)
现在我发现了我的错误。你可以看到我将视图作为app delegate中的变量。因此，如果第二个视图改变了方向，那么其他视图就不知道它是什么。如果视图现在更改“新”，则可以在动画之后识别方向更改，因此在动画运行时，“新”视图的方向错误。
因此，如果您想要切换视图，只需创建一个新视图，因为它以正确的方向初始化。
亲切的问候 $ H @ RKY答案 1 :(得分：0)
为支持所有方向，您的viewcontroller应该像这样实现shouldAutorotateToInterfaceOrientation：
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
每个viewcontroller都应该为支持所需的方向实现此方法。
同时检查Supported interface orientations文件中的.plist项。也许你有错误的参数。
答案 2 :(得分：0)
在secondviewcontroller
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
UIViewController *controller = [self.navigationController.viewControllers objectAtIndex:0];
[controller shouldAutorotateToInterfaceOrientation:interfaceOrientation];
return YES;
}
希望它有效.. !! :)