>i think this is incorrect and slow.

Hell yes. Do you need the entire asset "in-memory"? Then you should
either consider reading it into a ByteArrayOutputStream or
allocate the required bytes as an array after determining the size of
the asset.

>I do not know how to get datasize from inputstream and i read data two
>time :-)

Use the android.content.res.AssetFileDescriptor & call #getLength() /
#getDeclaredLength()?

Works like a charm. Remember to call #close() on the
AssetFileDescriptor.

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