68 lines
2.1 KiB
Java
68 lines
2.1 KiB
Java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.content;
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import android.net.Uri;
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/**
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* Utility methods useful for working with content {@link android.net.Uri}s,
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* those with a "content" scheme.
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*/
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public class ContentUris {
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/**
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* Converts the last path segment to a long.
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*
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* <p>This supports a common convention for content URIs where an ID is
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* stored in the last segment.
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*
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* @throws UnsupportedOperationException if this isn't a hierarchical URI
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* @throws NumberFormatException if the last segment isn't a number
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*
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* @return the long conversion of the last segment or -1 if the path is
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* empty
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*/
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public static long parseId(Uri contentUri) {
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String last = contentUri.getLastPathSegment();
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return last == null ? -1 : Long.parseLong(last);
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}
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/**
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* Appends the given ID to the end of the path.
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*
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* @param builder to append the ID to
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* @param id to append
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*
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* @return the given builder
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*/
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public static Uri.Builder appendId(Uri.Builder builder, long id) {
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return builder.appendEncodedPath(String.valueOf(id));
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}
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/**
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* Appends the given ID to the end of the path.
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*
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* @param contentUri to start with
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* @param id to append
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*
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* @return a new URI with the given ID appended to the end of the path
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*/
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public static Uri withAppendedId(Uri contentUri, long id) {
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return appendId(contentUri.buildUpon(), id).build();
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}
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}
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