Java tutorial
/* * Copyright (c) 2014-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ package me.moxun.dreamcatcher.connector.util; import android.text.TextUtils; import android.util.Log; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * This is a Log toolwith this you can the following * <ol> * <li>use KLog.d(),you could print whether the method execute,and the default tag is current class's name</li> * <li>use KLog.d(msg),you could print log as before,and you could location the method with a click in Android Studio Logcat</li> * <li>use KLog.json(),you could print json string with well format automatic</li> * </ol> * * @author zhaokaiqiang * github https://github.com/ZhaoKaiQiang/KLog */ public class KLog { private static boolean IS_SHOW_LOG = true; private static final String DEFAULT_MESSAGE = "execute"; private static final String LINE_SEPARATOR = System.getProperty("line.separator"); private static final int JSON_INDENT = 4; private static final int V = 0x1; private static final int D = 0x2; private static final int I = 0x3; private static final int W = 0x4; private static final int E = 0x5; private static final int A = 0x6; private static final int JSON = 0x7; public static void setLoggable(boolean loggable) { IS_SHOW_LOG = loggable; } public static void v() { printLog(V, null, DEFAULT_MESSAGE); } public static void v(String msg) { printLog(V, null, msg); } public static void v(String tag, String msg) { printLog(V, tag, msg); } public static void d() { printLog(D, null, DEFAULT_MESSAGE); } public static void d(String msg) { printLog(D, null, msg); } public static void d(String tag, String msg) { printLog(D, tag, msg); } public static void i() { printLog(I, null, DEFAULT_MESSAGE); } public static void i(String msg) { printLog(I, null, msg); } public static void i(String tag, String msg) { printLog(I, tag, msg); } public static void w() { printLog(W, null, DEFAULT_MESSAGE); } public static void w(String msg) { printLog(W, null, msg); } public static void w(String tag, String msg) { printLog(W, tag, msg); } public static void e() { printLog(E, null, DEFAULT_MESSAGE); } public static void e(String msg) { printLog(E, null, msg); } public static void e(String tag, String msg) { printLog(E, tag, msg); } public static void a() { printLog(A, null, DEFAULT_MESSAGE); } public static void a(String msg) { printLog(A, null, msg); } public static void a(String tag, String msg) { printLog(A, tag, msg); } public static void json(String jsonFormat) { printLog(JSON, null, jsonFormat); } public static void json(String tag, String jsonFormat) { printLog(JSON, tag, jsonFormat); } private static void printLog(int type, String tagStr, String msg) { if (!IS_SHOW_LOG) { return; } String tag; if (tagStr == null) { tag = "DreamCatcher"; } else { tag = "DreamCatcher-" + tagStr; } if (msg == null) { return; } StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace(); int index = 6; String className = stackTrace[index].getFileName(); String methodName = stackTrace[index].getMethodName(); int lineNumber = stackTrace[index].getLineNumber(); methodName = methodName.substring(0, 1).toUpperCase() + methodName.substring(1); StringBuilder stringBuilder = new StringBuilder(); stringBuilder.append("(").append(className).append(":").append(lineNumber).append("").append(") "); if (msg != null && type != JSON) { stringBuilder.append(msg); } String logStr = stringBuilder.toString(); switch (type) { case V: Log.v(tag, logStr); break; case D: Log.d(tag, logStr); break; case I: Log.i(tag, logStr); break; case W: Log.w(tag, logStr); break; case E: Log.e(tag, logStr); break; case A: Log.wtf(tag, logStr); break; case JSON: { if (TextUtils.isEmpty(msg)) { Log.d(tag, "Empty or Null json content"); return; } String message = null; try { if (msg.startsWith("{")) { JSONObject jsonObject = new JSONObject(msg); message = jsonObject.toString(JSON_INDENT); } else if (msg.startsWith("[")) { JSONArray jsonArray = new JSONArray(msg); message = jsonArray.toString(JSON_INDENT); } } catch (JSONException e) { e(tag, e.getCause().getMessage() + "\n" + msg); return; } printLine(tag, true); message = logStr + LINE_SEPARATOR + message; String[] lines = message.split(LINE_SEPARATOR); StringBuilder jsonContent = new StringBuilder(); for (String line : lines) { jsonContent.append(" ").append(line).append(LINE_SEPARATOR); } Log.d(tag, jsonContent.toString()); printLine(tag, false); } break; } } private static void printLine(String tag, boolean isTop) { if (isTop) { Log.d(tag, "???????????????????????????????????????????????????????????????????????????????????????"); } else { Log.d(tag, "???????????????????????????????????????????????????????????????????????????????????????"); } } }