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Android Android Data Persistence File Storage Writing to Internal Storage

Posted by Fouchimi Ousmane
Fouchimi Ousmane
3,349 Points

How to check whether file exists or not with File object ?

I don't understand how to check whether file exists using File Object or not given only InputStream and OutputStream objects before copying ? Could someone elaborate more on this ? Thank you

FileUtilities.java 
import java.io.InputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class FileUtilities {

  public static boolean copyResult;

  public static void saveAssetImage(Context context, String assetName) {
    File fileToWrite = new File(context.getFilesDir(), assetName);
    AssetManager assetManager = context.getAssets();

    try {
      InputStream in = assetManager.open(assetName);
      FileOutputStream out = new FileOutputStream(fileToWrite);
      copyResult = copyFile(in, out);
    } catch(FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  private static boolean copyFile(InputStream in, FileOutputStream out) {
    // Copy magic intentionally omitted
    return true;
  }
}