#import "JFImagePickerController.h"

@interface ViewController () <JFImagePickerDelegate>

@end

JFImagePickerController *picker = [[JFImagePickerController alloc] initWithRootViewController:nil];
picker.pickerDelegate = self;
[self presentViewController:picker animated:YES completion:nil];

- (void)imagePickerDidFinished:(JFImagePickerController *)picker{ 
    //picker.assets is all choices photo
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerDidCancel:(JFImagePickerController *)picker{
    [picker dismissViewControllerAnimated:YES completion:nil];
}

[[JFImageManager sharedManager] thumbWithAsset:asset resultHandler:^(UIImage *result) {
    //do something
}];

[[JFImageManager sharedManager] imageWithAsset:asset resultHandler:^(UIImage *result) {
    //do something
}];

[JFImagePickerController clear];  //clear datas