我正在制作一个需要访问相机和相机胶卷的通用 iOS 应用程序。我该怎么办？我还没有要显示的代码，因为该应用程序主要基于此。
【问题讨论】：
UIImagePickerController
标签： ios iphone objective-c ipad ipod
您需要在 .h 文件中声明委托 UIImagePickerControllerDelegate
并使用此代码打开相机。
// Pick image from camera
- (IBAction)captureImage:(id)sender
{
if (! [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIAlertView *deviceNotFoundAlert = [[UIAlertView alloc] initWithTitle:@"No Device" message:@"Camera is not available"
delegate:nil
cancelButtonTitle:@"Okay"
otherButtonTitles:nil];
[deviceNotFoundAlert show];
} else {
UIImagePickerController *cameraPicker = [[UIImagePickerController alloc] init];
cameraPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
cameraPicker.delegate =self;
// Show image picker
[self presentViewController:cameraPicker animated:YES completion:nil];
}
}
【讨论】：
此答案仅适用于物理设备！
访问相机：
- (void)takePhoto {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
}
访问相机胶卷：
- (void)selectPhoto {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
}
实现 UIImagePickerController 的委托方法：
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
self.imageView.image = chosenImage;
[picker dismissViewControllerAnimated:YES completion:NULL];
}
还有这个：
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:NULL];
}
源码here
【讨论】：
你要找的大概就是这个了。
这是 UIImagePickerController 类参考：
这是整体相机编程和对您有用的文档。
祝你好运！
【讨论】：