自拍模式下的图像选择器

你可以通过设置这样的两个属性来做到这UIImagePickerController一点 -

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
[picker setSourceType:UIImagePickerControllerSourceTypeCamera];
[picker setCameraDevice:UIImagePickerControllerCameraDeviceFront];

您需要设置Camera Device来Front和需要设置Source Type到Camera.