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Asked: 2026-05-28T07:46:37+00:00

My app is downloading image file from internet. To improve performance, I cache the

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My app is downloading image file from internet. To improve performance, I cache the bitmap in memory (both hard and soft cache). I do cache the image file in SD card as well.

Decoding image file from SD card takes noticeable time. I measured this line of code, it takes around 500 - 1800 milliseconds.

Bitmap bitmap = BitmapFactory.decodeFile(pathName, bitmapOptions);

Some facts

  • Average actual image size is 600×600.
  • Requested bitmap size is between 200X200 to 400×400
  • Have used bitmapOptions.inSampleSize to scale the image

Can anyone suggest what is the better way to improve the performance of file decoding?

Thanks

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1 Answer

  1. Editorial Team

    You can cache the image in all formats you need and decode them.

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