android常用工具类 －－ 打印log日志

public class LogUtils {// public static final boolean IsNeedLog = true;public static final boolean IsNeedLog = true;/** 日志输出时的TAG */private static String mTag = "xx_application_log";/** 日志输出级别NONE */public static final int LEVEL_NONE = 0;/** 日志输出级别V */public static final int LEVEL_VERBOSE = 1;/** 日志输出级别D */public static final int LEVEL_DEBUG = 2;/** 日志输出级别I */public static final int LEVEL_INFO = 3;/** 日志输出级别W */public static final int LEVEL_WARN = 4;/** 日志输出级别E */public static final int LEVEL_ERROR = 5;/** 是否允许输出log */private static int mDebuggable = LEVEL_ERROR;/** 用于记时的变量 */private static long mTimestamp = 0;/** 写文件的锁对象 *//** 以级别为 v 的形式输出LOG，输出颜色为黑色的，输出大于或等于VERBOSE日志级别的信息 */public static void v(String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_VERBOSE) {Log.v(mTag, msg);}}public static void v(String tag,String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_VERBOSE) {Log.v(tag, msg);}}/** 以级别为 d 的形式输出LOG，输出颜色是蓝色的，输出大于或等于DEBUG日志级别的信息 */public static void d(String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_DEBUG) {Log.d(mTag, msg);}}/** 以级别为 i 的形式输出LOG，输出为绿色，输出大于或等于INFO日志级别的信息*/public static void i(String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_INFO) {Log.i(mTag, msg);}}/** 以级别为 w 的形式输出LOG，输出为橙色, 输出大于或等于WARN日志级别的信息*/public static void w(String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_WARN) {Log.w(mTag, msg);}}/** 以级别为 w 的形式输出Throwable，输出为红色，仅输出ERROR日志级别的信息.*/public static void w(Throwable tr) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_WARN) {Log.w(mTag, "", tr);}}/** 以级别为 w 的形式输出LOG信息和Throwable */public static void w(String msg, Throwable tr) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_WARN && null != msg) {Log.w(mTag, msg, tr);}}/** 以级别为 e 的形式输出LOG */public static void e(String msg) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_ERROR) {Log.e(mTag, msg);}}/** 以级别为 e 的形式输出Throwable */public static void e(Throwable tr) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_ERROR) {Log.e(mTag, "", tr);}}/** 以级别为 e 的形式输出LOG信息和Throwable */public static void e(String msg, Throwable tr) {if (!IsNeedLog) {return;}if (mDebuggable >= LEVEL_ERROR && null != msg) {Log.e(mTag, msg, tr);}}/** * 把Log存储到文件中 *  * @param log *            需要存储的日志 * @param path *            存储路径 */// public static void log2File(String log, String path) {// log2File(log, path, true);// }//// public static void log2File(String log, String path, boolean append) {// synchronized (mLogLock) {// FileUtils.writeFile(log + "\r\n", path, append);// }// }/** * 以级别为 e 的形式输出msg信息,附带时间戳，用于输出一个时间段起始点 *  * @param msg *            需要输出的msg */public static void msgStartTime(String msg) {mTimestamp = System.currentTimeMillis();if (!TextUtils.isEmpty(msg)) {e("[Started：" + mTimestamp + "]" + msg);}}/** 以级别为 e 的形式输出msg信息,附带时间戳，用于输出一个时间段结束点* @param msg 需要输出的msg */public static void elapsed(String msg) {long currentTime = System.currentTimeMillis();long elapsedTime = currentTime - mTimestamp;mTimestamp = currentTime;e("[Elapsed：" + elapsedTime + "]" + msg);}public static <T> void printList(List<T> list) {if (list == null || list.size() < 1) {return;}int size = list.size();i("---begin---");for (int i = 0; i < size; i++) {i(i + ":" + list.get(i).toString());}i("---end---");}public static <T> void printArray(T[] array) {if (array == null || array.length < 1) {return;}int length = array.length;i("---begin---");for (int i = 0; i < length; i++) {i(i + ":" + array[i].toString());}i("---end---");}}