根据uri得到文件路径

╰+哭是因爲堅強的太久メ 2023-10-03 18:02 19阅读 0赞

/**
         * Get a file path from a Uri. This will get the the path for Storage Access
         * Framework Documents, as well as the _data field for the MediaStore and
         * other file-based ContentProviders.
         *
         * @param context The context.
         * @param uri     The Uri to query.
         * @author paulburke
         */
        public static String getPath(final Context context, final Uri uri) {
    
            // DocumentProvider
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && 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];
                    }
                } else if (isDownloadsDocument(uri)) {
                    // DownloadsProvider
    
                    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);
                } else if (isMediaDocument(uri)) {
                    // MediaProvider
                    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);
                }
            } else if ("content".equalsIgnoreCase(uri.getScheme())) {
                // MediaStore (and general)  // Return the remote address
                if (isGooglePhotosUri(uri)) {
                    return uri.getLastPathSegment();
                }
    
                return getDataColumn(context, uri, null, null);
            } else if ("file".equalsIgnoreCase(uri.getScheme())) {
                // File
                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 index = cursor.getColumnIndexOrThrow(column);
                    return cursor.getString(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());
        }
    
        /**
         * @param uri The Uri to check.
         * @return Whether the Uri authority is Google Photos.
         */
        public static boolean isGooglePhotosUri(Uri uri) {
            return "com.google.android.apps.photos.content".equals(uri.getAuthority());
        }

[Android 通过uri获取文件路径path - 简书][Android _uri_path -]

[神坑之java、安卓从Uri获取文件路径错误\_Blog for 明月依希-CSDN博客][java_Uri_Blog for _-CSDN]

[Android 通过Uri获取真实文件路径\_移动，移着动动-CSDN博客][Android _Uri_-CSDN]

[Android _uri_path -]: https://www.jianshu.com/p/25c35da68db2
[java_Uri_Blog for _-CSDN]: https://blog.csdn.net/Mingyueyixi/article/details/58688634
[Android _Uri_-CSDN]: https://blog.csdn.net/u012758497/article/details/118046670