UIImage Caching is hight : Everyone.My English is not good..

+ (nullable UIImage *)imageNamed:(NSString *)name;

I use this method.

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e.g `UIImage *image=[UIImage imageNamed:@"test"];`
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But my image's type is png.

[enter image description here][1]

In my project,loads a lot of different images.


So,My cashe is very hight


[enter image description here][2]


Please help me,thanks!


  [1]: http://i.stack.imgur.com/M2SAI.png
  [2]: http://i.stack.imgur.com/mCNpx.png