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      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 
     17 package android.support.v4.util;
     18 
     19 /**
     20  * Helper for accessing features in {@link android.util.DebugUtils}
     21  * introduced after API level 4 in a backwards compatible fashion.
     22  *
     23  * @hide
     24  */
     25 public class DebugUtils {
     26 
     27     public static void buildShortClassTag(Object cls, StringBuilder out) {
     28         if (cls == null) {
     29             out.append("null");
     30         } else {
     31             String simpleName = cls.getClass().getSimpleName();
     32             if (simpleName == null || simpleName.length() <= 0) {
     33                 simpleName = cls.getClass().getName();
     34                 int end = simpleName.lastIndexOf('.');
     35                 if (end > 0) {
     36                     simpleName = simpleName.substring(end+1);
     37                 }
     38             }
     39             out.append(simpleName);
     40             out.append('{');
     41             out.append(Integer.toHexString(System.identityHashCode(cls)));
     42         }
     43     }
     44 }
     45