Android Logging

Here is HauteLook’s logger class from our Android Code Library. It displays class name, method name and line number per line of log message.

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package com.hautelook.android.lib.logger;    /**  * @authorjimmy@hautelook.com  * @copyright 2011 HauteLook  *  * Description:  *   Simple logger that displays: class name, method name and line number  *  *  * Usage:  *   *   Use this class directly or customize it by extending it.  *   *      HLlog.i("");  *      HLLog.i("called");  *      HLLog.i("called","tag");  *    *      L.i();  *      L.i("called");  *      L.i("called","tag");  *  * Sub-classing example:  *  *    // C.DEBUG = boolean true/false (project specific constant class)  *  *    public class L extends HLLog {  *      *           public static String DEFAULT_TAG = "HauteLook";  *      *           public static void i() {  *                if(C.DEBUG) callLogger("i", DEFAULT_TAG, "");  *           }  *      *           public static void i(String message) {  *                  if(C.DEBUG) callLogger("i", DEFAULT_TAG, message);  *           }  *  *           public static void i(String message, String tag) {  *                  if(C.DEBUG) callLogger("i", tag, message);  *           }  *  *    }  *   */    import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import android.util.Log;    @SuppressWarnings("unused") publicclass HLLog {           publicstatic String DEFAULT_TAG ="HauteLookLib";           finalstaticintdepth = 4;           publicstaticvoid i(String message) {               callLogger("i", DEFAULT_TAG, message);        }           publicstaticvoid i(String message, String tag) {               callLogger("i", tag, message);        }           publicstaticvoid d(String message) {               callLogger("d", DEFAULT_TAG, message);        }           publicstaticvoid d(String message, String tag) {               callLogger("d", tag, message);        }           publicstaticvoid e(String message) {               callLogger("e", DEFAULT_TAG, message);        }           publicstaticvoid e(String message, String tag) {               callLogger("e", tag, message);        }           publicstaticvoid w(String message) {               callLogger("w", DEFAULT_TAG, message);        }           publicstaticvoid w(String message, String tag) {               callLogger("w", tag, message);        }           publicstaticvoid v(String message) {               callLogger("v", DEFAULT_TAG, message);        }           publicstaticvoid v(String message, String tag) {               callLogger("v", tag, message);        }           @SuppressWarnings("rawtypes")        publicstaticvoid callLogger(String methodName, String tag, String message) {               final StackTraceElement[] ste = Thread.currentThread().getStackTrace();               try {                      Class cls = Class.forName("android.util.Log");                      Method method = cls.getMethod(methodName, String.class,       String.class);                      method.invoke(null, tag, getTrace(ste) + message);               } catch (ClassNotFoundException e) {                      e.printStackTrace();               } catch (IllegalArgumentException e) {                      e.printStackTrace();               } catch (SecurityException e) {                      e.printStackTrace();               } catch (IllegalAccessException e) {                      e.printStackTrace();               } catch (InvocationTargetException e) {                      e.printStackTrace();               } catch (NoSuchMethodException e) {                      e.printStackTrace();               }        }           publicstatic String getTrace(StackTraceElement[] ste) {               return"[" + getClassName(ste) + "][" + getMethodName(ste) + "][" + getLineNumber(ste) + "] ";        }           publicstatic String getClassPackage(StackTraceElement[] ste) {               return ste[depth].getClassName();        }           publicstatic String getClassName(StackTraceElement[] ste) {               String[] temp = ste[depth].getClassName().split("\\.");               return temp[temp.length - 1];        }           publicstatic String getMethodName(StackTraceElement[] ste) {               return ste[depth].getMethodName();        }           publicstaticint getLineNumber(StackTraceElement[] ste) {               return ste[depth].getLineNumber();        }    }

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