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1. public class UriUtils {
3. /**
4. * Get a file path from a Uri. This will get the the path for Storage Access
5. * Framework Documents, as well as the _data field for the MediaStore and
6. * other file-based ContentProviders.
7. *
8. * @param context The context.
9. * @param uri The Uri to query.
10. */
11. public static String getPath(final Context context, final Uri uri) {
13. final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
15. // DocumentProvider
16. if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
17. // ExternalStorageProvider
18. if (isExternalStorageDocument(uri)) {
19. final String docId = DocumentsContract.getDocumentId(uri);
20. final String[] split = docId.split(":");
21. final String type = split[0];
23. if ("primary".equalsIgnoreCase(type)) {
24. return Environment.getExternalStorageDirectory() + "/" + split[1];
25. }
27. // TODO handle non-primary volumes
28. }
29. // DownloadsProvider
30. else if (isDownloadsDocument(uri)) {
32. final String id = DocumentsContract.getDocumentId(uri);
33. final Uri contentUri = ContentUris.withAppendedId(
34. Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
36. return getDataColumn(context, contentUri, null, null);
37. }
38. // MediaProvider
39. else if (isMediaDocument(uri)) {
40. final String docId = DocumentsContract.getDocumentId(uri);
41. final String[] split = docId.split(":");
42. final String type = split[0];
44. Uri contentUri = null;
45. if ("image".equals(type)) {
46. contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
47. } else if ("video".equals(type)) {
48. contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
49. } else if ("audio".equals(type)) {
50. contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
51. }
53. final String selection = "_id=?";
54. final String[] selectionArgs = new String[] {
55. split[1]
56. };
58. return getDataColumn(context, contentUri, selection, selectionArgs);
59. }
60. }
61. // MediaStore (and general)
62. else if ("content".equalsIgnoreCase(uri.getScheme())) {
63. return getDataColumn(context, uri, null, null);
64. }
65. // File
66. else if ("file".equalsIgnoreCase(uri.getScheme())) {
67. return uri.getPath();
68. }
70. return null;
71. }
73. /**
74. * Get the value of the data column for this Uri. This is useful for
75. * MediaStore Uris, and other file-based ContentProviders.
76. *
77. * @param context The context.
78. * @param uri The Uri to query.
79. * @param selection (Optional) Filter used in the query.
80. * @param selectionArgs (Optional) Selection arguments used in the query.
81. * @return The value of the _data column, which is typically a file path.
82. */
83. public static String getDataColumn(Context context, Uri uri, String selection,
84. String[] selectionArgs) {
86. Cursor cursor = null;
87. final String column = "_data";
88. final String[] projection = {
89. column
90. };
92. try {
93. cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
94. null);
95. if (cursor != null && cursor.moveToFirst()) {
96. final int column_index = cursor.getColumnIndexOrThrow(column);
97. return cursor.getString(column_index);
98. }
99. } finally {
100. if (cursor != null)
101. cursor.close();
102. }
103. return null;
104. }
107. /**
108. * @param uri The Uri to check.
109. * @return Whether the Uri authority is ExternalStorageProvider.
110. */
111. public static boolean isExternalStorageDocument(Uri uri) {
112. return "com.android.externalstorage.documents".equals(uri.getAuthority());
113. }
115. /**
116. * @param uri The Uri to check.
117. * @return Whether the Uri authority is DownloadsProvider.
118. */
119. public static boolean isDownloadsDocument(Uri uri) {
120. return "com.android.providers.downloads.documents".equals(uri.getAuthority());
121. }
123. /**
124. * @param uri The Uri to check.
125. * @return Whether the Uri authority is MediaProvider.
126. */
127. public static boolean isMediaDocument(Uri uri) {
128. return "com.android.providers.media.documents".equals(uri.getAuthority());
129. }
131. }