When this is set as the head of the list, 22 | * an instance of it can function as a drop-in replacement for {@link android.util.Log}. 23 | * Most of the methods in this class server only to map a method call in Log to its equivalent 24 | * in LogNode.
25 | */ 26 | public class Log { 27 | // Grabbing the native values from Android's native logging facilities, 28 | // to make for easy migration and interop. 29 | public static final int NONE = -1; 30 | public static final int VERBOSE = android.util.Log.VERBOSE; 31 | public static final int DEBUG = android.util.Log.DEBUG; 32 | public static final int INFO = android.util.Log.INFO; 33 | public static final int WARN = android.util.Log.WARN; 34 | public static final int ERROR = android.util.Log.ERROR; 35 | public static final int ASSERT = android.util.Log.ASSERT; 36 | 37 | // Stores the beginning of the LogNode topology. 38 | private static LogNode mLogNode; 39 | 40 | /** 41 | * Returns the next LogNode in the linked list. 42 | */ 43 | public static LogNode getLogNode() { 44 | return mLogNode; 45 | } 46 | 47 | /** 48 | * Sets the LogNode data will be sent to. 49 | */ 50 | public static void setLogNode(LogNode node) { 51 | mLogNode = node; 52 | } 53 | 54 | /** 55 | * Instructs the LogNode to print the log data provided. Other LogNodes can 56 | * be chained to the end of the LogNode as desired. 57 | * 58 | * @param priority Log level of the data being logged. Verbose, Error, etc. 59 | * @param tag Tag for for the log data. Can be used to organize log statements. 60 | * @param msg The actual message to be logged. 61 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 62 | * to extract and print useful information. 63 | */ 64 | public static void println(int priority, String tag, String msg, Throwable tr) { 65 | if (mLogNode != null) { 66 | mLogNode.println(priority, tag, msg, tr); 67 | } 68 | } 69 | 70 | /** 71 | * Instructs the LogNode to print the log data provided. Other LogNodes can 72 | * be chained to the end of the LogNode as desired. 73 | * 74 | * @param priority Log level of the data being logged. Verbose, Error, etc. 75 | * @param tag Tag for for the log data. Can be used to organize log statements. 76 | * @param msg The actual message to be logged. The actual message to be logged. 77 | */ 78 | public static void println(int priority, String tag, String msg) { 79 | println(priority, tag, msg, null); 80 | } 81 | 82 | /** 83 | * Prints a message at VERBOSE priority. 84 | * 85 | * @param tag Tag for for the log data. Can be used to organize log statements. 86 | * @param msg The actual message to be logged. 87 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 88 | * to extract and print useful information. 89 | */ 90 | public static void v(String tag, String msg, Throwable tr) { 91 | println(VERBOSE, tag, msg, tr); 92 | } 93 | 94 | /** 95 | * Prints a message at VERBOSE priority. 96 | * 97 | * @param tag Tag for for the log data. Can be used to organize log statements. 98 | * @param msg The actual message to be logged. 99 | */ 100 | public static void v(String tag, String msg) { 101 | v(tag, msg, null); 102 | } 103 | 104 | 105 | /** 106 | * Prints a message at DEBUG priority. 107 | * 108 | * @param tag Tag for for the log data. Can be used to organize log statements. 109 | * @param msg The actual message to be logged. 110 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 111 | * to extract and print useful information. 112 | */ 113 | public static void d(String tag, String msg, Throwable tr) { 114 | println(DEBUG, tag, msg, tr); 115 | } 116 | 117 | /** 118 | * Prints a message at DEBUG priority. 119 | * 120 | * @param tag Tag for for the log data. Can be used to organize log statements. 121 | * @param msg The actual message to be logged. 122 | */ 123 | public static void d(String tag, String msg) { 124 | d(tag, msg, null); 125 | } 126 | 127 | /** 128 | * Prints a message at INFO priority. 129 | * 130 | * @param tag Tag for for the log data. Can be used to organize log statements. 131 | * @param msg The actual message to be logged. 132 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 133 | * to extract and print useful information. 134 | */ 135 | public static void i(String tag, String msg, Throwable tr) { 136 | println(INFO, tag, msg, tr); 137 | } 138 | 139 | /** 140 | * Prints a message at INFO priority. 141 | * 142 | * @param tag Tag for for the log data. Can be used to organize log statements. 143 | * @param msg The actual message to be logged. 144 | */ 145 | public static void i(String tag, String msg) { 146 | i(tag, msg, null); 147 | } 148 | 149 | /** 150 | * Prints a message at WARN priority. 151 | * 152 | * @param tag Tag for for the log data. Can be used to organize log statements. 153 | * @param msg The actual message to be logged. 154 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 155 | * to extract and print useful information. 156 | */ 157 | public static void w(String tag, String msg, Throwable tr) { 158 | println(WARN, tag, msg, tr); 159 | } 160 | 161 | /** 162 | * Prints a message at WARN priority. 163 | * 164 | * @param tag Tag for for the log data. Can be used to organize log statements. 165 | * @param msg The actual message to be logged. 166 | */ 167 | public static void w(String tag, String msg) { 168 | w(tag, msg, null); 169 | } 170 | 171 | /** 172 | * Prints a message at WARN priority. 173 | * 174 | * @param tag Tag for for the log data. Can be used to organize log statements. 175 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 176 | * to extract and print useful information. 177 | */ 178 | public static void w(String tag, Throwable tr) { 179 | w(tag, null, tr); 180 | } 181 | 182 | /** 183 | * Prints a message at ERROR priority. 184 | * 185 | * @param tag Tag for for the log data. Can be used to organize log statements. 186 | * @param msg The actual message to be logged. 187 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 188 | * to extract and print useful information. 189 | */ 190 | public static void e(String tag, String msg, Throwable tr) { 191 | println(ERROR, tag, msg, tr); 192 | } 193 | 194 | /** 195 | * Prints a message at ERROR priority. 196 | * 197 | * @param tag Tag for for the log data. Can be used to organize log statements. 198 | * @param msg The actual message to be logged. 199 | */ 200 | public static void e(String tag, String msg) { 201 | e(tag, msg, null); 202 | } 203 | 204 | /** 205 | * Prints a message at ASSERT priority. 206 | * 207 | * @param tag Tag for for the log data. Can be used to organize log statements. 208 | * @param msg The actual message to be logged. 209 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 210 | * to extract and print useful information. 211 | */ 212 | public static void wtf(String tag, String msg, Throwable tr) { 213 | println(ASSERT, tag, msg, tr); 214 | } 215 | 216 | /** 217 | * Prints a message at ASSERT priority. 218 | * 219 | * @param tag Tag for for the log data. Can be used to organize log statements. 220 | * @param msg The actual message to be logged. 221 | */ 222 | public static void wtf(String tag, String msg) { 223 | wtf(tag, msg, null); 224 | } 225 | 226 | /** 227 | * Prints a message at ASSERT priority. 228 | * 229 | * @param tag Tag for for the log data. Can be used to organize log statements. 230 | * @param tr If an exception was thrown, this can be sent along for the logging facilities 231 | * to extract and print useful information. 232 | */ 233 | public static void wtf(String tag, Throwable tr) { 234 | wtf(tag, null, tr); 235 | } 236 | } 237 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | -------------- 3 | 4 | Version 2.0, January 2004 5 | http://www.apache.org/licenses/ 6 | 7 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 8 | 9 | 1. 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It supports common 32 | * queuing behaviors such as enqueue/remove of media items, pause/resume/stop, 33 | * etc. 34 | * 35 | * Actual playback of a single media item is abstracted into a Player interface, 36 | * and is handled outside this class. 37 | */ 38 | public class SessionManager implements Callback { 39 | private static final String TAG = "SessionManager"; 40 | private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); 41 | 42 | private String mName; 43 | private int mSessionId; 44 | private int mItemId; 45 | private boolean mPaused; 46 | private boolean mSessionValid; 47 | private Player mPlayer; 48 | private Callback mCallback; 49 | private List70 | * This particular request is designed to return a bundle of not very 71 | * interesting statistics for demonstration purposes. 72 | *
73 | * 74 | * @see #DATA_PLAYBACK_COUNT 75 | */ 76 | public static final String ACTION_GET_STATISTICS = 77 | "com.example.android.mediarouteprovider.ACTION_GET_STATISTICS"; 78 | 79 | /** 80 | * {@link #ACTION_GET_STATISTICS} result data: Number of times the 81 | * playback action was invoked. 82 | */ 83 | public static final String DATA_PLAYBACK_COUNT = 84 | "com.example.android.mediarouteprovider.EXTRA_PLAYBACK_COUNT"; 85 | 86 | private static final ArrayList