在打开的相机上呈现相机胶卷UIImagePickerController

Question

在我的应用程序上,我有一个cameraOverlayView打开相机,带有自定义控件,用于相机按钮.该应用程序允许用户在关闭相机之前拍摄多张照片,因此快门按钮不会调用dismissViewControllerAnimated,而是在您完成拍照时有一个关闭按钮.

现在,相机覆盖图上的一个按钮是一个图库按钮,允许用户选择保存的图像而不是拍摄新的图像.我尝试了两种不同的方法来完成这项工作,但都失败了.

第一种方法

使用UIImagePickerController当前显示叠加层的相同实例并切换sourceType到库.它确实呈现了画廊,但是当拍摄照片时,我不能在不解雇整个叠加层的情况下解雇厨房.

第二种方法

创建一个单独的实例UIImagePickerController,设置sourceType为库并尝试调用presentViewController,然后失败并显示警告:

"警告:尝试在窗口层次结构中显示其视图!"

有没有人有这个问题的解决方案？这甚至可能吗？

Answer 1

试试这个~~我认为这是你的目标.

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic, strong) UIImagePickerController *imagePicker;

@end

@implementation ViewController

@synthesize imagePicker = _imagePicker;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

}


- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:YES];

    sleep(2);

    _imagePicker = [[UIImagePickerController alloc] init];
    [_imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
    [_imagePicker setDelegate:self];

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(10, 50, 100, 30)];
    [button setTitle:@"Library" forState:UIControlStateNormal];
    [button setBackgroundColor:[UIColor darkGrayColor]];
    [button addTarget:self action:@selector(gotoLibrary:) forControlEvents:UIControlEventTouchUpInside];

    [_imagePicker.view addSubview:button];

    [self presentViewController:_imagePicker animated:YES completion:nil];
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(IBAction)gotoLibrary:(id)sender
{
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    [imagePicker.view setFrame:CGRectMake(0, 80, 320, 350)];
    [imagePicker setSourceType:UIImagePickerControllerSourceTypeSavedPhotosAlbum];
    [imagePicker setDelegate:self];

    [_imagePicker presentViewController:imagePicker animated:YES completion:nil];
}


- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    [picker dismissViewControllerAnimated:YES completion:nil];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    [picker dismissViewControllerAnimated:YES completion:nil];
}
@end