保存当前view到相册

import <QuartzCore/QuartzCore.h>

要响应的方法里面添加：

 
    UIGraphicsBeginImageContext(currentView.bounds.size);     //currentView 当前的view
    [currentView.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);