一、Android4.4版本以上Uri地址封装规范:
content://com.android.providers.media.documents/document/image%3A659
二、Android4.4版本以下Uri地址没被封装的,地址规范:
/storage/emulated/0/Pictures/07 绚彩夜拍.jpg
三、工具类代码实现:
- public class GetPathFromUri4kitkat {
- @SuppressLint("NewApi")
- public static String getPath(final Context context, final Uri uri) {
- final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
- // DocumentProvider
- if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
- // ExternalStorageProvider
- 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 getDataColumn(context, uri, null, null);
- }
- // File
- else if ("file".equalsIgnoreCase(uri.getScheme())) {
- return uri.getPath();
- }
- return null;
- }
- /**
- * Get the value of the data column for this Uri. This is useful for
- * MediaStore Uris, and other file-based ContentProviders.
- *
- * @param context
- * The context.
- * @param uri
- * The Uri to query.
- * @param selection
- * (Optional) Filter used in the query.
- * @param selectionArgs
- * (Optional) Selection arguments used in the query.
- * @return The value of the _data column, which is typically a file path.
- */
- 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;
- }
- /**
- * @param uri
- * The Uri to check.
- * @return Whether the Uri authority is ExternalStorageProvider.
- */
- public static boolean isExternalStorageDocument(Uri uri) {
- return "com.android.externalstorage.documents".equals(uri.getAuthority());
- }
- /**
- * @param uri
- * The Uri to check.
- * @return Whether the Uri authority is DownloadsProvider.
- */
- public static boolean isDownloadsDocument(Uri uri) {
- return "com.android.providers.downloads.documents".equals(uri.getAuthority());
- }
- /**
- * @param uri
- * The Uri to check.
- * @return Whether the Uri authority is MediaProvider.
- */
- public static boolean isMediaDocument(Uri uri) {
- return "com.android.providers.media.documents".equals(uri.getAuthority());
- }
- }