关于将系统自带的UIImagePickerController 作为uitabbarcontroller时 present时出现问题的解决
把我的代码先放上来吧：
#pragma mark --
#pragma mark Methods
- (void)initImagePickerControllerInterface
{
if (!_imagePickerController) {
_imagePickerController = [[UIImagePickerControlleralloc]init];
}
[_imagePickerControllersetSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[_imagePickerControllersetDelegate:self];
[_imagePickerControllersetAllowsEditing:NO];
[selfaddChildViewController:_imagePickerController]; //只需要加上这句话即可解决present时页面突闪的问题
[self.viewaddSubview:_imagePickerController.view];
[[UIApplicationsharedApplication]setStatusBarStyle:UIStatusBarStyleBlackTranslucent];
}
//注意：控制器还需要继承
UINavigationControllerDelegate
//下面这个用来解决都留有 20 个像素空隙的问题： （在当前类的viewwillappear和viewdidappear里不再需要设置statusbar）这样上边的状态栏会闪现一下，但没有更好的办法了
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
[UIViewanimateWithDuration:0.4animations:^{ //这个地方设成0.3貌似就不行
[[UIApplicationsharedApplication]setStatusBarHidden:YES];
} completion:^(BOOL finished) {
[[UIApplicationsharedApplication]setStatusBarHidden:NO];
}];
UIView *custom = [[UIViewalloc]initWithFrame:CGRectMake(0,0,0,0)];
UIBarButtonItem *btn = [[UIBarButtonItemalloc]initWithCustomView:custom];
[viewController.navigationItem setRightBarButtonItem:btn animated:NO];
viewController.title = @"扫 一扫";
if ([GNDeviceversionPermit:7second:0]) { //下面这段话如果在IOS5上运行的话会显示有点问题，所以这个地方注释
NSDictionary *attributes=[NSDictionarydictionaryWithObjectsAndKeys:[UIColorblackColor],UITextAttributeTextColor,[UIFontboldSystemFontOfSize:20],UITextAttributeFont,nil];
[viewController.navigationController.navigationBarsetTitleTextAttributes:attributes];
}
[btn release];
[custom release];
}
PS:1216日，后来又出现个问题，就是在其它页面把扫描到的内容保存到相册后，历史图片页面的右上角的“取消”键就又出现了，现在能想到的办法就是当保存到相册时去发个通知，当"历史图片"页面收到通知后，把UIImagePickerController的view移除掉，然后再添加
#pragma mark --
#pragma mark GNNotification
- (void)handleSaveImageTOCustomAlbum:(NSNotification*)notification
{
if (_imagePickerController) {
[_imagePickerController.view removeFromSuperview];
[_imagePickerController removeFromParentViewController];
[_imagePickerController release];
_imagePickerController = nil;
// [self initImagePickerControllerInterface];
[self performSelector:@selector(initImagePickerControllerInterface) withObject:nil afterDelay:1]; //不知道为什么这个地方需要延时下在IOS6上才会有效果，不然还是会有"取消"键
}
}