Android 日志打印功能及项目

package com.test.util;

import com.test.BuildConfig;

/**
 * Wrapper API for sending log output.
 */
public class AppLog {
	protected static final String TAG = "AppLog";

	private AppLog() {
	}

	/**
	 * Send a VERBOSE log message.
	 *
	 * @param msg
	 *            The message you would like logged.
	 */
	public static void v(String msg) {
		if (BuildConfig.DEBUG)
			android.util.Log.v(TAG, buildMessage(msg));
	}

	/**
	 * Send a VERBOSE log message and log the exception.
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @param thr
	 *            An exception to log
	 */
	public static void verbose(String msg, Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.v(TAG, buildMessage(msg), thr);
	}

	/**
	 * Send a DEBUG log message.
	 *
	 * @param msg
	 */
	public static void debug(String msg) {
		if (BuildConfig.DEBUG)
			android.util.Log.d(TAG, buildMessage(msg));
	}

	/**
	 * Send a DEBUG log message and log the exception.
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @param thr
	 *            An exception to log
	 */
	public static void debug(String msg, Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.d(TAG, buildMessage(msg), thr);
	}

	/**
	 * Send an INFO log message.
	 *
	 * @param msg
	 *            The message you would like logged.
	 */
	public static void info(String msg) {
		if (BuildConfig.DEBUG)
			android.util.Log.i(TAG, buildMessage(msg));
	}

	/**
	 * Send a INFO log message and log the exception.
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @param thr
	 *            An exception to log
	 */
	public static void info(String msg, Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.i(TAG, buildMessage(msg), thr);
	}

	/**
	 * Send an ERROR log message.
	 *
	 * @param msg
	 *            The message you would like logged.
	 */
	public static void error(String msg) {
		if (BuildConfig.DEBUG)
			android.util.Log.e(TAG, buildMessage(msg));
	}

	/**
	 * Send a WARN log message
	 *
	 * @param msg
	 *            The message you would like logged.
	 */
	public static void warn(String msg) {
		if (BuildConfig.DEBUG)
			android.util.Log.w(TAG, buildMessage(msg));
	}

	/**
	 * Send a WARN log message and log the exception.
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @param thr
	 *            An exception to log
	 */
	public static void warn(String msg, Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.w(TAG, buildMessage(msg), thr);
	}

	/**
	 * Send an empty WARN log message and log the exception.
	 *
	 * @param thr
	 *            An exception to log
	 */
	public static void warn(Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.w(TAG, buildMessage(""), thr);
	}

	/**
	 * Send an ERROR log message and log the exception.
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @param thr
	 *            An exception to log
	 */
	public static void error(String msg, Throwable thr) {
		if (BuildConfig.DEBUG)
			android.util.Log.e(TAG, buildMessage(msg), thr);
	}

	/**
	 * Building Message
	 *
	 * @param msg
	 *            The message you would like logged.
	 * @return Message String
	 */
	protected static String buildMessage(String msg) {
		StackTraceElement caller = new Throwable().fillInStackTrace()
				.getStackTrace()[2];

		return caller.getClassName() + "." + caller.getMethodName() + "(): "
				+ msg;
	}
}