Question

我需要使用addSubView在相机模式下添加UIImagePickerController。我已经为它编写了代码，但它在视图的顶部留下了空白区域。

-(void)viewDidAppear:(BOOL)animated{
NSLog(@"ViewDidAppear");

OverlayView *overlay = [[OverlayView alloc]
                        initWithFrame:CGRectMake(0,0,SCREEN_WIDTH,SCREEN_HEIGTH)];

//create a new image picker instance
picker = [[UIImagePickerController alloc]init];
self.picker.delegate = self;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
    //set source to video!
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    //hide all controls
    picker.showsCameraControls = NO;
    picker.navigationBarHidden = NO;
    picker.toolbarHidden = YES;
    picker.editing = NO;
    //make the video preview full size
    picker.wantsFullScreenLayout = YES;
    slider.value = 1;

    picker.cameraViewTransform = CGAffineTransformScale(picker.cameraViewTransform,slider.value, slider.value);
    //set our custom overlay view
    picker.cameraOverlayView = overlay;
    [picker.view addSubview:slider];
    //show picker


    [picker.view addSubview:capture];
    [picker.view addSubview:library];
    //[picker.view addSubview:multicapture];

    [capture addTarget:self action:@selector(takepicture) forControlEvents:UIControlEventTouchUpInside];
    [library addTarget:self action:@selector(goToLibrary) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:picker.view];
    [picker viewWillAppear:YES];
    [picker viewDidAppear:YES];

}else{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Test Text" message:@"Camera is Not Availble" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil];
    [alert show];
    [alert release];
}

[overlay release];

}

任何人都可以帮助我。

感谢。

Answer 1

正如kante0所说，白边是状态栏消失了。如果要显示状态栏，请使用kante0的解决方案：

[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];
[self.view addSubview:picker.view];

如果您不想显示状态栏（通常在显示相机预览时），请使用以下代码：

[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
[self.view setFrame: [[UIScreen mainScreen] bounds]];

// Place your overlay view here

[self.view addSubview:picker.view];

但是你必须记住，当删除选择器视图时，如果你想再次显示状态栏，你需要这样做：

[picker.view removeFromSuperview];
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationSlide];
[self.view setFrame: [[UIScreen mainScreen] applicationFrame]];

// If you need to place elements programmatically, do it here

Answer 2

了解NSScreen获取准确的尺寸。仔细检查您的高度值是否正确。例如，您可以这样做：

int width = [[NSScreen mainScreen] frame].size.width;
int height = [[NSScreen mainScreen] frame].size.height;

Answer 3

不是白色边缘，状态栏消失。

我用以下方法解决了问题：

[[UIApplication sharedApplication] setStatusBarHidden：NO withAnimation：UIStatusBarAnimationNone];

使用addSubView的UIImagePickerController在视图顶部留下白色边距

3 个答案: