UriToUrl.java

package org.appsroid.fxpro.library;

import android.annotation.SuppressLint;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.util.Log;

@SuppressLint("NewApi")
public class UriToUrl {

	public static String get(final Context context, final Uri uri) {

		final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

		// DocumentProvider
		if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
			// LocalStorageProvider
			if (isLocalStorageDocument(uri)) {
				// The path is the id
				return DocumentsContract.getDocumentId(uri);
			}
			// ExternalStorageProvider
			else if (isExternalStorageDocument(uri)) {
				final String docId = DocumentsContract.getDocumentId(uri);
				final String[] split = docId.split(":");
				final String type = split[0];

				if ("primary".equalsIgnoreCase(type)) {
					return Environment.getExternalStorageDirectory() + "/" + split[1];
				}

				// TODO handle non-primary volumes
			}
			// DownloadsProvider
			else if (isDownloadsDocument(uri)) {

				final String id = DocumentsContract.getDocumentId(uri);
				final Uri contentUri = ContentUris.withAppendedId(
						Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

				return getDataColumn(context, contentUri, null, null);
			}
			// MediaProvider
			else if (isMediaDocument(uri)) {
				final String docId = DocumentsContract.getDocumentId(uri);
				final String[] split = docId.split(":");
				final String type = split[0];

				Uri contentUri = null;
				if ("image".equals(type)) {
					contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
				} else if ("video".equals(type)) {
					contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
				} else if ("audio".equals(type)) {
					contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
				}

				final String selection = "_id=?";
				final String[] selectionArgs = new String[] {
						split[1]
				};

				return getDataColumn(context, contentUri, selection, selectionArgs);
			}
		}
		// MediaStore (and general)
		else if ("content".equalsIgnoreCase(uri.getScheme())) {

			// Return the remote address
			if (isGooglePhotosUri(uri))
				return uri.getLastPathSegment();

			return getDataColumn(context, uri, null, null);
		}
		// File
		else if ("file".equalsIgnoreCase(uri.getScheme())) {
			return uri.getPath();
		}

		return null;
	}

	public static boolean isLocalStorageDocument(Uri uri) {
		return LocalStorageProvider.AUTHORITY.equals(uri.getAuthority());
	}

	public static boolean isExternalStorageDocument(Uri uri) {
		return "com.android.externalstorage.documents".equals(uri.getAuthority());
	}

	public static boolean isDownloadsDocument(Uri uri) {
		return "com.android.providers.downloads.documents".equals(uri.getAuthority());
	}

	public static boolean isMediaDocument(Uri uri) {
		return "com.android.providers.media.documents".equals(uri.getAuthority());
	}

	public static boolean isGooglePhotosUri(Uri uri) {
		return "com.google.android.apps.photos.content".equals(uri.getAuthority());
	}

	public static String getDataColumn(Context context, Uri uri, String selection,
			String[] selectionArgs) {

		Cursor cursor = null;
		final String column = "_data";
		final String[] projection = {
				column
		};

		try {
			cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
					null);
			if (cursor != null && cursor.moveToFirst()) {

				final int column_index = cursor.getColumnIndexOrThrow(column);
				return cursor.getString(column_index);
			}
		} finally {
			if (cursor != null)
				cursor.close();
		}
		return null;
	}

	public static void deleteUri(Context context, Uri uri) {
		try {
			context.getContentResolver().delete(uri, null, null);
		} catch (Exception e) {}
	}

	public static void sendBroadcast(Context context, String image_url) {
		if (image_url != null) {
			MediaScannerConnection.scanFile(context,
					new String[] { image_url }, null,
					new MediaScannerConnection.OnScanCompletedListener() {
				public void onScanCompleted(String path, Uri uri) {
					Log.i("ExternalStorage", "Scanned " + path + ":");
					Log.i("ExternalStorage", "-> uri=" + uri);
				}
			});
		}
		try {
			context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
		} catch (Exception e) {}
		
		try {
			context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
		} catch (Exception e) {}
	}

}