iOS View快照，View截屏

#pragma mark - 屏幕快照
 
- (UIImage *)convertViewToImage:(UIView *)view
{
    //https://github.com/alskipp/ASScreenRecorder 錄屏代碼
    // 第二個參數表示是否非透明。如果需要顯示半透明效果，需傳NO，否則YES。第三個參數就是屏幕密度了
    UIGraphicsBeginImageContextWithOptions(view.bounds.size,YES,[UIScreen mainScreen].scale);
    [view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}
 
- (UIImage *)snapsHotView:(UIView *)view
{
    UIGraphicsBeginImageContextWithOptions(view.bounds.size,YES,[UIScreen mainScreen].scale);
    [view drawViewHierarchyInRect:view.bounds afterScreenUpdates:NO];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}