CapturePhotoUtils.java

/**
 * https://gist.github.com/samkirton/0242ba81d7ca00b475b9
 */

package com.ladjzero.uzlee.utils;

import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.net.Uri;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;

/**
 * Android internals have been modified to store images in the media folder with
 * the correct date meta data
 *
 * @author samuelkirton
 */
public class CapturePhotoUtils {

	/**
	 * A copy of the Android internals  insertImage method, this method populates the
	 * meta data with DATE_ADDED and DATE_TAKEN. This fixes a common problem where media
	 * that is inserted manually gets saved at the end of the gallery (because date is not populated).
	 *
	 * @see android.provider.MediaStore.Images.Media#insertImage(ContentResolver, Bitmap, String, String)
	 */
	public static final String insertImage(ContentResolver cr,
										   Bitmap source,
										   String title,
										   String description) {

		ContentValues values = new ContentValues();
		values.put(Images.Media.TITLE, title);
		values.put(Images.Media.DISPLAY_NAME, title);
		values.put(Images.Media.DESCRIPTION, description);
		values.put(Images.Media.MIME_TYPE, "image/png");
		// Add the date meta data to ensure the image is added at the front of the gallery
		values.put(Images.Media.DATE_ADDED, System.currentTimeMillis());
		values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis());

		Uri url = null;
		String stringUrl = null;    /* value to be returned */

		try {
			url = cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

			if (source != null) {
				OutputStream imageOut = cr.openOutputStream(url);
				try {
					source.compress(Bitmap.CompressFormat.PNG, 0, imageOut);
				} finally {
					imageOut.close();
				}
			} else {
				cr.delete(url, null, null);
				url = null;
			}
		} catch (Exception e) {
			if (url != null) {
				cr.delete(url, null, null);
				url = null;
			}
		}

		if (url != null) {
			stringUrl = url.toString();
		}

		return stringUrl;
	}

	/**
	 * A copy of the Android internals StoreThumbnail method, it used with the insertImage to
	 * populate the android.provider.MediaStore.Images.Media#insertImage with all the correct
	 * meta data. The StoreThumbnail method is private so it must be duplicated here.
	 *
	 * @see android.provider.MediaStore.Images.Media (StoreThumbnail private method)
	 */
	private static final Bitmap storeThumbnail(
			ContentResolver cr,
			Bitmap source,
			long id,
			float width,
			float height,
			int kind) {

		// create the matrix to scale it
		Matrix matrix = new Matrix();

		float scaleX = width / source.getWidth();
		float scaleY = height / source.getHeight();

		matrix.setScale(scaleX, scaleY);

		Bitmap thumb = Bitmap.createBitmap(source, 0, 0,
				source.getWidth(),
				source.getHeight(), matrix,
				true
		);

		ContentValues values = new ContentValues(4);
		values.put(Images.Thumbnails.KIND, kind);
		values.put(Images.Thumbnails.IMAGE_ID, (int) id);
		values.put(Images.Thumbnails.HEIGHT, thumb.getHeight());
		values.put(Images.Thumbnails.WIDTH, thumb.getWidth());

		Uri url = cr.insert(Images.Thumbnails.EXTERNAL_CONTENT_URI, values);

		try {
			OutputStream thumbOut = cr.openOutputStream(url);
			thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut);
			thumbOut.close();
			return thumb;
		} catch (FileNotFoundException ex) {
			return null;
		} catch (IOException ex) {
			return null;
		}
	}
}