可以显示行号的Android Log 工具

Android 的Log 类只能以TAG的方式却分不同类的信息，这里利用反射的方式，将Log所在的行号和类名抓出来，以后转交测试的时候如果看到log的消息就可以快速定位软件的bug

package com.tcl.navigator.utils;

import android.util.Log;

public class LogUtils {
	private static final boolean DEBUG = true;
	private static final String TAG = "LogUtils.java";

	public static void e(String message) {
		if (DEBUG) {
			StackTraceElement[] elements = Thread.currentThread().getStackTrace();
			if (elements.length < 4) {
				Log.e(TAG, "Stack to shallow");
			}else{
				String fullClassName = elements[3].getClassName();
				String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
				String methodName = elements[3].getMethodName();
				int lineNumber = elements[3].getLineNumber();
				Log.e(className + "." + methodName + "():" + lineNumber,message);
			}
		}
	}
	public static void d(String message) {
		if (DEBUG) {
			StackTraceElement[] elements = Thread.currentThread().getStackTrace();
			if (elements.length < 3) {
				Log.e(TAG, "Stack to shallow");
			}else{
				String fullClassName = elements[3].getClassName();
				String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
				String methodName = elements[3].getMethodName();
				int lineNumber = elements[3].getLineNumber();
				Log.d(className + "." + methodName + "():" + lineNumber,message);
			}
		}
	}
	public static void i(String message) {
		if (DEBUG) {
			StackTraceElement[] elements = Thread.currentThread().getStackTrace();
			if (elements.length < 3) {
				Log.e(TAG, "Stack to shallow");
			}else{
				String fullClassName = elements[3].getClassName();
				String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
				String methodName = elements[3].getMethodName();
				int lineNumber = elements[3].getLineNumber();
				Log.i(className + "." + methodName + "():" + lineNumber,message);
			}
		}
	}
	
	public static void w(String message) {
		if (DEBUG) {
			StackTraceElement[] elements = Thread.currentThread().getStackTrace();
			if (elements.length < 3) {
				Log.e(TAG, "Stack to shallow");
			}else{
				String fullClassName = elements[3].getClassName();
				String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
				String methodName = elements[3].getMethodName();
				int lineNumber = elements[3].getLineNumber();
				Log.w(className + "." + methodName + "():" + lineNumber,message);
			}
		}
	}
	public static void v(String message) {
		if (DEBUG) {
			StackTraceElement[] elements = Thread.currentThread().getStackTrace();
			if (elements.length < 3) {
				Log.e(TAG, "Stack to shallow");
			}else{
				String fullClassName = elements[3].getClassName();
				String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
				String methodName = elements[3].getMethodName();
				int lineNumber = elements[3].getLineNumber();
				Log.v(className + "." + methodName + "():" + lineNumber,message);
			}
		}
	}
	
}

评论

1 楼 fantouch 2013-03-29  

修改了一下:

package me.fantouch.libs.log;

import android.util.Log;

/**
 * (ExtendedLog=>ELog)可以记录行号,类名,方法名的Log工具
 * 
 * @author Fantouch
 */
public class ELog {
    private static final boolean DEBUG = true;
    private static final String TAG = ELog.class.getSimpleName();

    public static void e(String message) {
        if (DEBUG) {
            Log.e(getTag(Thread.currentThread().getStackTrace()), message);
        }
    }

    public static void d(String message) {
        if (DEBUG) {
            Log.d(getTag(Thread.currentThread().getStackTrace()), message);
        }
    }

    public static void i(String message) {
        if (DEBUG) {
            Log.i(getTag(Thread.currentThread().getStackTrace()), message);
        }
    }

    public static void w(String message) {
        if (DEBUG) {
            Log.w(getTag(Thread.currentThread().getStackTrace()), message);
        }
    }

    public static void v(String message) {
        if (DEBUG) {
            Log.v(getTag(Thread.currentThread().getStackTrace()), message);
        }
    }

    private static String getTag(StackTraceElement[] elements) {
        StringBuffer tag = new StringBuffer();
        if (elements.length < 4) {
            Log.e(TAG, "Stack to shallow");
        } else {
            String fullClassName = elements[3].getClassName();
            tag.append(elements[3].getLineNumber() +
                    fullClassName.substring(fullClassName.lastIndexOf(".") + 1) + "." +
                    elements[3].getMethodName());
        }
        return tag.toString();
    }
}