A continuación muestro dos métodos -uno para Xamarin.Android en C# y otro para Android Nativo en Java– para obtener la ruta real de cualquier contenido multimedia en la memoria del dispositivo Android. Soporta múltiples teléfonos:
GetRealPathFromURI.cs
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public class GetRealPathFromURI { public static string GetPath(Android.Net.Uri uri) { bool isKitKat = Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.Kitkat; if (isKitKat && DocumentsContract.IsDocumentUri(Application.Context, uri)) { // ExternalStorageProvider if (isExternalStorageDocument(uri)) { string docId = DocumentsContract.GetDocumentId(uri); char[] chars = { ':' }; string[] split = docId.Split(chars); string type = split[0]; if ("primary".Equals(type, StringComparison.OrdinalIgnoreCase)) { return Android.OS.Environment.ExternalStorageDirectory + "/" + split[1]; } } // DownloadsProvider else if (isDownloadsDocument(uri)) { string id = DocumentsContract.GetDocumentId(uri); Android.Net.Uri contentUri = ContentUris.WithAppendedId( Android.Net.Uri.Parse("content://downloads/public_downloads"), long.Parse(id)); //System.Diagnostics.Debug.WriteLine(contentUri.ToString()); return getDataColumn(Application.Context, contentUri, null, null); } // MediaProvider else if (isMediaDocument(uri)) { String docId = DocumentsContract.GetDocumentId(uri); char[] chars = { ':' }; String[] split = docId.Split(chars); String type = split[0]; Android.Net.Uri contentUri = null; if ("image".Equals(type)) { contentUri = MediaStore.Images.Media.ExternalContentUri; } else if ("video".Equals(type)) { contentUri = MediaStore.Video.Media.ExternalContentUri; } else if ("audio".Equals(type)) { contentUri = MediaStore.Audio.Media.ExternalContentUri; } String selection = "_id=?"; String[] selectionArgs = new String[] { split[1] }; return getDataColumn(Application.Context, contentUri, selection, selectionArgs); } } // MediaStore (and general) else if ("content".Equals(uri.Scheme, StringComparison.OrdinalIgnoreCase)) { // Return the remote address if (isGooglePhotosUri(uri)) return uri.LastPathSegment; return getDataColumn(Application.Context, uri, null, null); } // File else if ("file".Equals(uri.Scheme, StringComparison.OrdinalIgnoreCase)) { return uri.Path; } return null; } public static String getDataColumn(Context context, Android.Net.Uri uri, String selection, String[] selectionArgs) { ICursor cursor = null; String column = "_data"; String[] projection = { column }; try { cursor = context.ContentResolver.Query(uri, projection, selection, selectionArgs, null); if (cursor != null && cursor.MoveToFirst()) { int index = cursor.GetColumnIndexOrThrow(column); return cursor.GetString(index); } } catch(Exception e) { Toast.MakeText(Application.Context, "No tiene permisos suficientes", ToastLength.Long).Show(); } finally { if (cursor != null) cursor.Close(); } return null; } //Whether the Uri authority is ExternalStorageProvider. public static bool isExternalStorageDocument(Android.Net.Uri uri) { return "com.android.externalstorage.documents".Equals(uri.Authority); } //Whether the Uri authority is DownloadsProvider. public static bool isDownloadsDocument(Android.Net.Uri uri) { return "com.android.providers.downloads.documents".Equals(uri.Authority); } //Whether the Uri authority is MediaProvider. public static bool isMediaDocument(Android.Net.Uri uri) { return "com.android.providers.media.documents".Equals(uri.Authority); } //Whether the Uri authority is Google Photos. public static bool isGooglePhotosUri(Android.Net.Uri uri) { return "com.google.android.apps.photos.content".Equals(uri.Authority); } } |
GetRealPathFromURI.java
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public String getRealPathFromUri(final Uri uri) { // DocumentProvider if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(this, 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]; } } // 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(this, 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(this, contentUri, selection, selectionArgs); } } // MediaStore (and general) else if ("content".equalsIgnoreCase(uri.getScheme())) { // Return the remote address if (isGooglePhotosUri(uri)) return uri.getLastPathSegment(); return getDataColumn(this, uri, null, null); } // File else if ("file".equalsIgnoreCase(uri.getScheme())) { return uri.getPath(); } return null; } private 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 index = cursor.getColumnIndexOrThrow(column); return cursor.getString(index); } } finally { if (cursor != null) cursor.close(); } return null; } private boolean isExternalStorageDocument(Uri uri) { return "com.android.externalstorage.documents".equals(uri.getAuthority()); } private boolean isDownloadsDocument(Uri uri) { return "com.android.providers.downloads.documents".equals(uri.getAuthority()); } private boolean isMediaDocument(Uri uri) { return "com.android.providers.media.documents".equals(uri.getAuthority()); } private boolean isGooglePhotosUri(Uri uri) { return "com.google.android.apps.photos.content".equals(uri.getAuthority()); } |
1 comentario
Javier · 31 julio 2018 a las 14 h 32 min
Muy buena aportacion