Android日志输出工具类

package com.rctd.tmzs.util;


import android.util.Log;


/**  
 * 日志输出工具类
 * @author    WuHao; Email: 1024778537@qq.com  
 * @version   V1.0;  Date:  2014-05-26 11:35:20  
 */  
public class LogUtil {


private static String tag = "LogUtil";

private int logLevel = Log.VERBOSE;
private static final boolean isDebug = true;
private static LogUtil instance = null;


public static synchronized LogUtil getInstance() {
return getInstance(Log.VERBOSE);
}

public static synchronized LogUtil getInstance(int level) {
if (instance == null)
instance = new LogUtil();
if (level >= 2)
instance.setLevel(level);
return instance;
}


private LogUtil() {

}

public void setLevel(int level){
this.logLevel = level;
}


private String getFunctionName() {
StackTraceElement[] sts = Thread.currentThread().getStackTrace();
if (sts == null) {
return null;
}
for (StackTraceElement st : sts) {
if (st.isNativeMethod()) {
continue;
}
if (st.getClassName().equals(Thread.class.getName())) {
continue;
}
if (st.getClassName().equals(this.getClass().getName())) {
continue;
}
return "[" + Thread.currentThread().getName() + "(" + Thread.currentThread().getId() + "): " + st.getFileName() + ":" + st.getLineNumber() + "]";
}
return null;
}


private void outMsg(Object str) {
String msg = (str == null ? "" : str.toString());
String name = getFunctionName();
String ls = (name == null ?

msg.toString() : (name + " - " + msg));
if (logLevel == Log.DEBUG) {
Log.d(tag, ls);
} else if (logLevel == Log.INFO) {
Log.i(tag, ls);
} else if (logLevel == Log.WARN) {
Log.w(tag, ls);
} else if (logLevel == Log.ERROR) {
Log.e(tag, ls);
} else {
Log.v(tag, ls);
}
}


public void out(Object msg) {
if (isDebug) {
outMsg(msg);
}
}
}