cordova-plugin-camera/src/android/CordovaUri.java

package org.apache.cordova.camera;

import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.support.v4.content.FileProvider;

import java.io.File;

/*
 * This class exists because Andorid FilesProvider doesn't work on Android 4.4.4 and below and throws
 * weird errors.  I'm not sure why writing to shared cache directories is somehow verboten, but it is
 * and this error is irritating for a Compatibility library to have.
 *
 */

public class CordovaUri {

    private Uri androidUri;
    private String fileName;
    private Uri fileUri;

    /*
     * We always expect a FileProvider string to be passed in for the file that we create
     *
     */
    CordovaUri (Uri inputUri)
    {
        //Determine whether the file is a content or file URI
        if(inputUri.getScheme().equals("content"))
        {
            androidUri = inputUri;
            fileName = getFileNameFromUri(androidUri);
            fileUri = Uri.parse("file://" + fileName);
        }
        else
        {
            fileUri = inputUri;
            fileName = FileHelper.stripFileProtocol(inputUri.toString());
        }
    }

    public Uri getFileUri()
    {
        return fileUri;
    }

    public String getFilePath()
    {
        return fileName;
    }

    /*
     * This only gets called by takePicture
     */

    public Uri getCorrectUri()
    {
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
            return androidUri;
        else
            return fileUri;
    }

 /*
  * This is dirty, but it does the job.
  *
  * Since the FilesProvider doesn't really provide you a way of getting a URL from the file,
  * and since we actually need the Camera to create the file for us most of the time, we don't
  * actually write the file, just generate the location based on a timestamp, we need to get it
  * back from the Intent.
  *
  * However, the FilesProvider preserves the path, so we can at least write to it from here, since
  * we own the context in this case.
 */

    private String getFileNameFromUri(Uri uri) {
        String fullUri = uri.toString();
        String partial_path = fullUri.split("external_files")[1];
        File external_storage = Environment.getExternalStorageDirectory();
        String path = external_storage.getAbsolutePath() + partial_path;
        return path;

    }
}