diff --git a/AndJie/src/com/jwzhangjie/andbase/util/AppLog.java b/AndJie/src/com/jwzhangjie/andbase/util/AppLog.java
new file mode 100644
index 0000000..5704bc4
--- /dev/null
+++ b/AndJie/src/com/jwzhangjie/andbase/util/AppLog.java
@@ -0,0 +1,158 @@
+package com.jwzhangjie.andbase.util;
+
+import com.jwzhangjie.andbase.BuildConfig;
+
+/**
+ * Wrapper API for sending log output.
+ */
+public class AppLog {
+	protected static final String TAG = "jwzhangjie";
+
+	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 v(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 d(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 d(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 i(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 i(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 e(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 w(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 w(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 w(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 e(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;
+	}
+}