Log框架（一个类，对Log进行封装）

package com.csf.simplelog.utils; import android.text.TextUtils; import android.util.Log; /** * ClassName: LogUtil * Description:日志工具类 * Created by chensf on 2016-7-27 9:53. */ public class LogUtil { private static final String TAG = LogUtil.class.getSimpleName(); /** * 日志输出等级 */ private static int LOG_LEVEL = Log.VERBOSE; /** * 是否显示日志 */ private static boolean isShowLog = true; private static final String DOUBLE_DIVIDER = "-----------------------------------------------------------------------------------------------------------"; public static void init(boolean isShowLog) { LogUtil.isShowLog = isShowLog; } public static void init(boolean isShowLog, int logLevel) { LogUtil.isShowLog = isShowLog; LogUtil.LOG_LEVEL = logLevel; } public static int v(Object msg) { return v(TAG, msg); } public static int v(String tag, Object msg) { return v(tag, msg, null); } public static int v(String tag, Object msg, Throwable tr) { return printLog(Log.VERBOSE, tag, msg, tr); } public static int d(Object msg) { return d(TAG, msg); } public static int d(String tag, Object msg) { return d(tag, msg, null); } public static int d(String tag, Object msg, Throwable tr) { return printLog(Log.DEBUG, tag, msg, tr); } public static int i(Object msg) { return i(TAG, msg); } public static int i(String tag, Object msg) { return i(tag, msg, null); } public static int i(String tag, Object msg, Throwable tr) { return printLog(Log.INFO, tag, msg, tr); } public static int w(Object msg) { return w(TAG, msg); } public static int w(String tag, Object msg) { return w(tag, msg, null); } public static int w(String tag, Object msg, Throwable tr) { return printLog(Log.WARN, tag, msg, tr); } public static int e(Object msg) { return e(TAG, msg); } public static int e(String tag, Object msg) { return e(tag, msg, null); } public static int e(String tag, Object msg, Throwable tr) { return printLog(Log.ERROR, tag, msg, tr); } private static int printLog(int type, String tag, Object msgObj, Throwable tr) { if (!isShowLog) { return 0; } String msg; StringBuilder builder = new StringBuilder(DOUBLE_DIVIDER).append('\n').append(getFunctionName()) .append(DOUBLE_DIVIDER).append('\n').append(" "); if (msgObj == null) { msg = ""; } else { msg = msgObj.toString(); } if (!TextUtils.isEmpty(msg)) { builder.append(msg); } if (tr != null) { builder.append('\n').append(Log.getStackTraceString(tr)); } builder.append('\n').append(DOUBLE_DIVIDER); switch (type) { case Log.VERBOSE: if (LOG_LEVEL <= Log.VERBOSE) { return Log.v(tag, builder.toString()); } break; case Log.DEBUG: if (LOG_LEVEL <= Log.DEBUG) { return Log.d(tag, builder.toString()); } break; case Log.INFO: if (LOG_LEVEL <= Log.INFO) { return Log.i(tag, builder.toString()); } break; case Log.WARN: if (LOG_LEVEL <= Log.WARN) { return Log.w(tag, builder.toString()); } break; case Log.ERROR: if (LOG_LEVEL <= Log.ERROR) { return Log.e(tag, builder.toString()); } break; } return 0; } private static String getFunctionName() { StackTraceElement[] elements = Thread.currentThread().getStackTrace(); if (elements == null) { return ""; } for (StackTraceElement ste : elements) { if (ste.isNativeMethod()) { continue; } if (ste.getClassName().equals(Thread.class.getName())) { continue; } if (ste.getClassName().equals(LogUtil.class.getName())) { continue; } return " " + ste.getFileName().substring(0, ste.getFileName().indexOf(".")) + "." + ste.getMethodName() + " (" + ste.getFileName() + ":" + ste.getLineNumber() + ")\n"; } return ""; } }