Changing the type of data output in LogCat

Standard logger is not very convenient, at least for me. Below is an example of a logger remade for themselves. I use it for more than a year and a half. It allows you to visually locate the problems found faster, and makes logging easier. Easy to recycle for your needs. During operation, it does not require constant writing of the tag or creating a tag as a separate constant, since the formatted tag is automatically issued as

> Class: function: line number

We use it so - Log.w("SUCCESS download")
')
> DownloadCharts: downloadSongs: 322: SUCCESS download

Sometimes it is necessary to find out quickly not only the location of a specific error, but also the parent class. Then the call to the logger with the indication of the parent comes to the rescue, for example Log.w(this, "") then we get the string as

> (Parent) Class: function: line number

> (ChartsLibrary) DownloadCharts: downloadSongs: 322: Warning

But it's easier to try it once and see the results.

Under the cat is the code.

 package ua.at.tsvetkov.util; import android.text.TextUtils; /** * Extended logger. * * @author A.Tsvetkov 2010 http://tsvetkov.at.ua mailto:al@ukr.net */ public final class Log { // ========================================================== private static final String POSFIX_STRING = ")"; private static final String PREFIX_STRING = "> ("; private static final String PREFIX_MAIN_STRING = " > "; /** * Send a VERBOSE log message. * * @param msg The message you would like logged. */ public static void v(String msg) { android.util.Log.v(getLocation(), msg); } /** * Send a DEBUG log message. * * @param msg The message you would like logged. */ public static void d(String msg) { android.util.Log.d(getLocation(), msg); } /** * Send a INFO log message. * * @param msg The message you would like logged. */ public static void i(String msg) { android.util.Log.i(getLocation(), msg); } /** * Send a WARN log message. * * @param msg The message you would like logged. */ public static void w(String msg) { android.util.Log.w(getLocation(), msg); } /** * Send a ERROR log message. * * @param msg The message you would like logged. */ public static void e(String msg) { android.util.Log.e(getLocation(), msg); } // ========================================================== /** * Send a VERBOSE log message and log the exception. * * @param msg The message you would like logged. * @param tr An exception to log */ public static void v(String msg, Exception e) { android.util.Log.v(getLocation(), msg, e); } /** * Send a DEBUG log message and log the exception. * * @param msg The message you would like logged. * @param tr An exception to log */ public static void d(String msg, Exception e) { android.util.Log.d(getLocation(), msg, e); } /** * Send a INFO log message and log the exception. * * @param msg The message you would like logged. * @param tr An exception to log */ public static void i(String msg, Exception e) { android.util.Log.i(getLocation(), msg, e); } /** * Send a WARN log message and log the exception. * * @param msg The message you would like logged. * @param tr An exception to log */ public static void w(String msg, Exception e) { android.util.Log.w(getLocation(), msg, e); } /** * Send a ERROR log message and log the exception. * * @param msg The message you would like logged. * @param tr An exception to log */ public static void e(String msg, Exception e) { android.util.Log.e(getLocation(), msg, e); } // ========================================================== /** * Send a VERBOSE log the exception. * * @param tr An exception to log */ public static void v(Exception e) { android.util.Log.v(getLocation(), "", e); } /** * Send a DEBUG log the exception. * * @param tr An exception to log */ public static void d(Exception e) { android.util.Log.d(getLocation(), "", e); } /** * Send a INFO log the exception. * * @param tr An exception to log */ public static void i(Exception e) { android.util.Log.i(getLocation(), "", e); } /** * Send a WARN log the exception. * * @param tr An exception to log */ public static void w(Exception e) { android.util.Log.w(getLocation(), "", e); } /** * Send a ERROR log the exception. * * @param tr An exception to log */ public static void e(Exception e) { android.util.Log.e(getLocation(), "", e); } // ========================================================== /** * Send a <b>VERBOSE</b> log message. Using when you extend any Class and wont to receive full info in LogCat tag. * Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumberClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. */ public static void v(Object obj, String msg) { android.util.Log.v(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg); } /** * Send a <b>DEBUG</b> log message. Using when you extend any Class and wont to receive full info in LogCat tag. * Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. */ public static void d(Object obj, String msg) { android.util.Log.d(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg); } /** * Send a <b>INFO</b> log message. Using when you extend any Class and wont to receive full info in LogCat tag. * Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. */ public static void i(Object obj, String msg) { android.util.Log.i(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg); } /** * Send a <b>WARN</b> log message. Using when you extend any Class and wont to receive full info in LogCat tag. * Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. */ public static void w(Object obj, String msg) { android.util.Log.w(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg); } /** * Send a <b>ERROR</b> log message. Using when you extend any Class and wont to receive full info in LogCat tag. * Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. */ public static void e(Object obj, String msg) { android.util.Log.e(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg); } // ========================================================== /** * Send a <b>VERBOSE</b> log message and log the exception. Using when you extend any Class and wont to receive full * info in LogCat tag. Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. * @param tr An exception to log */ public static void v(Object obj, String msg, Exception e) { android.util.Log.v(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg, e); } /** * Send a <b>DEBUG</b> log message and log the exception. Using when you extend any Class and wont to receive full * info in LogCat tag. Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. * @param tr An exception to log */ public static void d(Object obj, String msg, Exception e) { android.util.Log.d(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg, e); } /** * Send a <b>INFO</b> log message and log the exception. Using when you extend any Class and wont to receive full * info in LogCat tag. Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. * @param tr An exception to log */ public static void i(Object obj, String msg, Exception e) { android.util.Log.i(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg, e); } /** * Send a <b>WARN</b> log message and log the exception. Using when you extend any Class and wont to receive full * info in LogCat tag. Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param msg The message you would like logged. * @param tr An exception to log */ public static void w(Object obj, String msg, Exception e) { android.util.Log.w(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg, e); } /** * Send a <b>ERROR</b> log message and log the exception. Using when you extend any Class and wont to receive full * info in LogCat tag. Usually you can use "this" in "obj" parameter. As result you receive tag string * "<b>(Called Main Class) LogginClass:MethodInLogginClass:lineNumber</b>" * * @param obj main class * @param tr An exception to log * @param msg The message you would like logged. */ public static void e(Object obj, String msg, Exception e) { android.util.Log.e(PREFIX_STRING + obj.getClass().getSimpleName() + POSFIX_STRING + getLocation(), msg, e); } private static String getLocation() { final String className = Log.class.getName(); final StackTraceElement[] traces = Thread.currentThread().getStackTrace(); boolean found = false; for (int i = 0; i < traces.length; i++) { StackTraceElement trace = traces[i]; try { if (found) { if (!trace.getClassName().startsWith(className)) { Class<?> clazz = Class.forName(trace.getClassName()); return PREFIX_MAIN_STRING + getClassName(clazz) + ":" + trace.getMethodName() + ":" + trace.getLineNumber(); } } else if (trace.getClassName().startsWith(className)) { found = true; continue; } } catch (ClassNotFoundException e) { } } return "[]: "; } private static String getClassName(Class<?> clazz) { if (clazz != null) { if (!TextUtils.isEmpty(clazz.getSimpleName())) { return clazz.getSimpleName(); } return getClassName(clazz.getEnclosingClass()); } return ""; } }