android开发中怎么通过Log函数输出当前行号和当前函数名

public class Debug {
	public static int line(Exception e) {
		StackTraceElement[] trace = e.getStackTrace();
		if (trace == null || trace.length == 0)
			return -1; //
		return trace[0].getLineNumber();
	}
	public static String fun(Exception e) {
		StackTraceElement[] trace = e.getStackTrace();
		if (trace == null)
			return ""; //
		return trace[0].getMethodName();
	}
}

public class test {
	public static String DI(Exception e) {
		return Debug.line(e)+"|"+Debug.fun(e)+"|";
	}
        public test() {
                 Log.d(TAG, DI(new Exception()));  //这里就输出我们需要的debug信息了
        }
}