For https://github.com/findbugsproject/findbugs/issues/63

ProfilePictureServiceImpl.java

package issue63;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class ProfilePictureServiceImpl {
	static class Environment {
		static final String DIRECTORY_PICTURES = "/pictures/directory";

		public static File getExternalStoragePublicDirectory(
				String path) {
			return new File(path);
		}
	}
	
	static class Uri {
		public Uri(File f) {
			// stub
		}

		static Uri fromFile(File f) {
			return new Uri(f);
		}
	}
	
	static class Log {
		public static void e(String tag, String errorKind, Exception e) {
			// stub
		}
	}

	private static final String TAG = "ProfilePicServiceImpl";
	private static final String UMEWIN_PROFILE = "UMW_PROFILE_%1$s.jpeg";
	private static final String IO_ERROR = "IO Error";

	public Uri getCameraProfilePicPath() {
		final File photoFile;
		try {
			photoFile = createCameraImageFile();
		} catch (final IOException e) {
			Log.e(TAG, IO_ERROR, e);
			return null;
		}
		return Uri.fromFile(photoFile);
	}

	private static File createCameraImageFile() throws IOException {
		final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
		final String cameraPhotoFileName = String.format(UMEWIN_PROFILE, timeStamp);
		final File storageDir = Environment.getExternalStoragePublicDirectory(
				Environment.DIRECTORY_PICTURES);
		return new File(storageDir, cameraPhotoFileName);
	}
}