图片压缩

- ( UIImage *)imageWithImageSimple:( UIImage *)image scaledToSize:( CGSize )newSize

{

// Create a graphics image context

UIGraphicsBeginImageContext (newSize);

 

// Tell the old image to draw in this newcontext, with the desired

// new size

[image  drawInRect : CGRectMake ( 0 , 0 ,newSize. width ,newSize. height )];

 

// Get the new image from the context

UIImage * newImage =  UIGraphicsGetImageFromCurrentImageContext ();

 

// End the context

UIGraphicsEndImageContext ();

 

// Return the new image.

return  newImage;

}