Question

我想导航到另一个视图。我喜欢我的收音机应用程序的现在播放按钮。我希望这个视图能够建立它的状态......我想要导航到的视图有一个文本字段，用于放射的url和一个无线电名称的标签。那么我如何能够了解该视图的状态，因为现在当我尝试导航它时导航很好但是文本字段发生了变化..所以我该怎么做才能不改变文本？这里有一些代码对于奇怪的名字感到抱歉

if (self.bookDetailViewController_1 == nil)
{
    iPhoneStreamingPlayerViewController *aBookDetail = [[iPhoneStreamingPlayerViewController alloc] initWithNibName:@"iPhoneStreamingPlayerView" bundle:nil];
    self.bookDetailViewController_1= aBookDetail;
    [aBookDetail release];
}

Music_appAppDelegate *delegate = [[UIApplication sharedApplication]delegate];
[delegate.booksNavController pushViewController:bookDetailViewController_1 animated:YES];

Answer 1

单身实施

//.h

+ (className *)sharedInstance;


//.m

static className* sharedInstance = nil;

@implementation className

+ (className*)sharedInstance {
    if (!sharedInstance) {
        sharedInstance = [[super allocWithZone:NULL] init];
    }

    return sharedInstance;
}

+ (id)allocWithZone:(NSZone *)zone {
    return [[self sharedInstance] retain];
}

- (id)copyWithZone:(NSZone *)zone {
    return self;
}

- (id)retain {
    return self;
}

- (NSUInteger)retainCount {
    return NSUIntegerMax;
}

- (void)release { }

- (id)autorelease {
    return self;
}


@end

导航到另一个视图iPhone sdk？

1 个答案: