仿 QQ 图片选择器

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CocoaPicker --仿 QQ 图片选择器

如何使用

self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;//半透明
        CocoaPickerViewController *transparentView = [[CocoaPickerViewController alloc] init];
        transparentView.delegate = self;
        transparentView.modalPresentationStyle = UIModalPresentationOverFullScreen;
        transparentView.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        transparentView.view.frame=self.view.frame;
        transparentView.view.backgroundColor=[[UIColor blackColor] colorWithAlphaComponent:.5];
        transparentView.view.superview.backgroundColor = [UIColor clearColor];
        [self presentViewController:transparentView animated:YES completion:nil];
}];