DebugUtils.java revision c39d9c75590eca86a5e7e32a8824ba04a0d42e9b 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v4.util;
18
19import android.support.annotation.RestrictTo;
20
21import static android.support.annotation.RestrictTo.Scope.GROUP_ID;
22
23/**
24 * Helper for accessing features in {@link android.util.DebugUtils}
25 * introduced after API level 4 in a backwards compatible fashion.
26 *
27 * @hide
28 */
29@RestrictTo(GROUP_ID)
30public class DebugUtils {
31
32    public static void buildShortClassTag(Object cls, StringBuilder out) {
33        if (cls == null) {
34            out.append("null");
35        } else {
36            String simpleName = cls.getClass().getSimpleName();
37            if (simpleName == null || simpleName.length() <= 0) {
38                simpleName = cls.getClass().getName();
39                int end = simpleName.lastIndexOf('.');
40                if (end > 0) {
41                    simpleName = simpleName.substring(end+1);
42                }
43            }
44            out.append(simpleName);
45            out.append('{');
46            out.append(Integer.toHexString(System.identityHashCode(cls)));
47        }
48    }
49}
50