LogHelper.java

package xmtools;
import android.util.Log;

public final class LogHelper {
	private static boolean mIsDebugMode = true;// 获取堆栈信息会影响性能，发布应用时记得关闭DebugMode
	private static String mLogTag = "LogHelper";

	private static final String CLASS_METHOD_LINE_FORMAT = "%s.%s()  Line:%d  (%s)";

	public static void trace() {
		if (mIsDebugMode) {
			StackTraceElement traceElement = Thread.currentThread()
					.getStackTrace()[3];// 从堆栈信息中获取当前被调用的方法信息
			String logText = String.format(CLASS_METHOD_LINE_FORMAT,
					traceElement.getClassName(), traceElement.getMethodName(),
					traceElement.getLineNumber(), traceElement.getFileName());
			Log.d(mLogTag, logText);// 打印Log
		}
	}
}