直接代码敬之

@import MobileCoreServices;

@import AVFoundation;

<UIImagePickerControllerDelegate,UINavigationControllerDelegate>

get方法

- (UIImagePickerController*)imagePicker{

if (!_imagePicker) {

_imagePicker = [[UIImagePickerController alloc]init];

//_imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;

_imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;

_imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;//摄像头分前后

_imagePicker.allowsEditing= NO;

//_imagePicker.allowsImageEditing = YES;

UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

[button setBackgroundColor:[UIColor yellowColor]];

[button setFrame:CGRectMake(80, 580, 50, 50)];

button.layer.cornerRadius = 25.0;

[_imagePicker.cameraOverlayView addSubview:button];

_imagePicker.showsCameraControls = NO;

// _imagePicker.cameraViewTransform = CGAffineTransformMakeRotation(M_PI_2);

_imagePicker.delegate = self;

}

return _imagePicker;

}

事件响应实现跳转：注意貌似不能在viewdidload中操作

[self presentViewController:self.imagePicker animated:YES completion:nil];

#pragma   - mark    UIImagePickerControllerDelegate

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {

NSLog(@"%s",__func__);

}

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

UIImage *image = [[UIImage alloc]init];

if (self.imagePicker.allowsEditing) {

image = [info objectForKey:UIImagePickerControllerEditedImage];

}else{

image = [info objectForKey:UIImagePickerControllerOriginalImage];

}

_img.image = image;

[self.imagePicker dismissViewControllerAnimated:YES completion:nil];

NSLog(@"%s",__func__);

}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{

[self dismissViewControllerAnimated:YES completion:nil];

NSLog(@"cancel");

}