#import <AVFoundation/AVFoundation.h>

#import <AVFoundation/AVCaptureDevice.h>

<UINavigationControllerDelegate, UIImagePickerControllerDelegate>

// 以sheet样式供用户选择

UIActionSheet *sheet;

if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:selfcancelButtonTitle:@"取消"destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"从相册中选取", nil];

} else { // 模拟器无相机

sheet = [[UIActionSheet alloc] initWithTitle:nildelegate:self cancelButtonTitle:@"取消"destructiveButtonTitle:nil otherButtonTitles:@"从相册中选取", nil];

}

[sheet showInView:self.view];

#pragma mark - UIActionSheetDelegate

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {

UIImagePickerControllerSourceType sourceType;

// 判断是否支持相机

if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

switch (buttonIndex) {

case 0: {

// 相机  用户选择了相机

NSString *mediaType = AVMediaTypeVideo;

AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];

if(authStatus != AVAuthorizationStatusAuthorized) { // 没有访问权限

UIAlertView *av = [[UIAlertViewalloc] initWithTitle:@"访问相机受限!" message:@""delegate:nil cancelButtonTitle:@"确认"otherButtonTitles:nil, nil];

[av show];

return;

}

sourceType = UIImagePickerControllerSourceTypeCamera;

break;

}

case 1: {

// 相册  用户选择了相册

NSString *mediaType = AVMediaTypeVideo;

AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];

if(authStatus != AVAuthorizationStatusAuthorized) { // 没有访问权限

UIAlertView *av = [[UIAlertViewalloc] initWithTitle:@"访问相册受限!" message:@""delegate:nil cancelButtonTitle:@"确认"otherButtonTitles:nil, nil];

[av show];

return;

}

sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

break;

}

case 2: {

// 取消

return;

}

}

} else {

if (buttonIndex == 0) {

// 相册  用户选择了相册

NSString *mediaType = AVMediaTypeVideo;

AVAuthorizationStatus authStatus = [AVCaptureDeviceauthorizationStatusForMediaType:mediaType];

if(authStatus != AVAuthorizationStatusAuthorized) { // 没有访问权限

UIAlertView *av = [[UIAlertViewalloc] initWithTitle:@"访问相册受限!" message:@""delegate:nil cancelButtonTitle:@"确认"otherButtonTitles:nil, nil];

[av show];

return;

}

sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

} else {

return;

}

}

UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

imagePickerController.sourceType = sourceType;

imagePickerController.allowsEditing = YES;

imagePickerController.delegate = self;

[selfpresentViewController:imagePickerController animated:YES completion:^{}];

}

#pragma mark - UIImagePickerControllerDelegate UINavigationControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

{

[picker dismissViewControllerAnimated:YEScompletion:^{}];

// 获取到的图片

UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

_headIV.image = image;

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

[self dismissViewControllerAnimated:YEScompletion:^{}];

}