I am using Android Studio and Oracle Java 8. I am trying to get all bytes 
from a file and pass them to a byte array.


It is my understanding based on the Oracle website, that the method 
getBytesFromFile() is defined in the Java library import java.io.File.

See: 
https://docs.oracle.com/cd/E13218_01/wlp/compozearchive/javadoc/portlets25/com/compoze/util/IoUtility.html#getBytesFromFile(java.io.File)


I should be able to call the method in my code. 


But I get the error message:

cannot resolve method 'getBytesFromFile(java.io.File)'


Why do I get the error message?


It looks like it does not see import java.io.File.



import java.io.File;


// Read the recording.pcm file from storage.FileInputStream recordingFile = 
openFileInput(recording.pcm, Context.MODE_WORLD_READABLE);
recordingFile.read(string.getBytes());
recordingFile.close();
// NOTE: The code below gives error message: cannot resolve method 
'getBytesFromFile(java.io.File)'byte[] data = getBytesFromFile(recordingFile);




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