| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.example.android.mediabrowserservice.utils; |
| |
| import android.util.Log; |
| |
| import com.example.android.mediabrowserservice.BuildConfig; |
| |
| public class LogHelper { |
| |
| private static final String LOG_PREFIX = "sample_"; |
| private static final int LOG_PREFIX_LENGTH = LOG_PREFIX.length(); |
| private static final int MAX_LOG_TAG_LENGTH = 23; |
| |
| public static String makeLogTag(String str) { |
| if (str.length() > MAX_LOG_TAG_LENGTH - LOG_PREFIX_LENGTH) { |
| return LOG_PREFIX + str.substring(0, MAX_LOG_TAG_LENGTH - LOG_PREFIX_LENGTH - 1); |
| } |
| |
| return LOG_PREFIX + str; |
| } |
| |
| /** |
| * Don't use this when obfuscating class names! |
| */ |
| public static String makeLogTag(Class cls) { |
| return makeLogTag(cls.getSimpleName()); |
| } |
| |
| |
| public static void v(String tag, Object... messages) { |
| // Only log VERBOSE if build type is DEBUG |
| if (BuildConfig.DEBUG) { |
| log(tag, Log.VERBOSE, null, messages); |
| } |
| } |
| |
| public static void d(String tag, Object... messages) { |
| // Only log DEBUG if build type is DEBUG |
| if (BuildConfig.DEBUG) { |
| log(tag, Log.DEBUG, null, messages); |
| } |
| } |
| |
| public static void i(String tag, Object... messages) { |
| log(tag, Log.INFO, null, messages); |
| } |
| |
| public static void w(String tag, Object... messages) { |
| log(tag, Log.WARN, null, messages); |
| } |
| |
| public static void w(String tag, Throwable t, Object... messages) { |
| log(tag, Log.WARN, t, messages); |
| } |
| |
| public static void e(String tag, Object... messages) { |
| log(tag, Log.ERROR, null, messages); |
| } |
| |
| public static void e(String tag, Throwable t, Object... messages) { |
| log(tag, Log.ERROR, t, messages); |
| } |
| |
| public static void log(String tag, int level, Throwable t, Object... messages) { |
| if (Log.isLoggable(tag, level)) { |
| String message; |
| if (t == null && messages != null && messages.length == 1) { |
| // handle this common case without the extra cost of creating a stringbuffer: |
| message = messages[0].toString(); |
| } else { |
| StringBuilder sb = new StringBuilder(); |
| if (messages != null) for (Object m : messages) { |
| sb.append(m); |
| } |
| if (t != null) { |
| sb.append("\n").append(Log.getStackTraceString(t)); |
| } |
| message = sb.toString(); |
| } |
| Log.println(level, tag, message); |
| } |
| } |
| } |