我就廢話不多說了，大家還是直接看代碼吧~

package com.zjx.taobaounion.utils;import android.util.Log;public class LogUtils { private static int currentLev = 4; // 當前log等級 上線之后控制這個等級 就可以減少Log的輸出 private static final int DEBUG_LEV = 4; // debug 等級 private static final int INFO_LEV = 3; // info 等級 private static final int WARNING_LEV = 2; // warning 等級 private static final int ERROR_LEV = 1; // error 等級 public static void d(Class clazz,String log){ if (currentLev >= DEBUG_LEV) { // 如果當前設置的等級 大于等于 debug等級 那么就證明當前不屏蔽debug的log輸出 Log.d(clazz.getSimpleName(),log); } } public static void i(Class clazz,String log){ if (currentLev >= INFO_LEV) { // 如果當前設置的等級 大于等于 info 那么就證明當前不屏蔽info的log輸出 Log.i(clazz.getSimpleName(),log); } } public static void w(Class clazz,String log){ if (currentLev >= WARNING_LEV) { // 如果當前設置的等級 大于等于 warning 那么就證明當前不屏蔽warning的log輸出 Log.w(clazz.getSimpleName(),log); } } public static void e(Class clazz,String log){ if (currentLev >= ERROR_LEV) { // 如果當前設置的等級 大于等于 error 那么就證明當前不屏蔽error的log輸出 Log.e(clazz.getSimpleName(),log); } }}

補充知識：android 日志文件LogUtils

背景

這是好久之前在網上找的一個常用類，已經忘記原文鏈接了，但是覺得很好用一直都在用，可以將日志寫到file里面也可以定位你是在哪個類哪一行打印的日志，保存到文件的路徑就是android/data/你的包名/files/目錄下，然后我們就可以愉快的找問題了

import android.text.TextUtils;import android.util.Log;import com.smartlink.suixing.App;import com.smartlink.suixing.BuildConfig;import java.io.BufferedWriter;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Formatter;import java.util.Locale;public class LogUtils {public static StringcustomTagPrefix= 'log';// 自定義Tag的前綴，可以是作者名private static final booleanisSaveLog= true;// 是否把保存日志到SD卡中private static StringcacheDirPath;private LogUtils() {}// 容許打印日志的類型，默認是true，設置為false則不打印public static booleanallowD= BuildConfig.DEBUG;public static booleanallowE= BuildConfig.DEBUG;public static booleanallowI= BuildConfig.DEBUG;public static booleanallowV= BuildConfig.DEBUG;public static booleanallowW= BuildConfig.DEBUG;public static booleanallowWtf= BuildConfig.DEBUG;// public static boolean allowD = true;// public static boolean allowE = true;// public static boolean allowI = true;// public static boolean allowV = true;// public static boolean allowW = true;// public static boolean allowWtf = true;private static String generateTag(StackTraceElement caller) {String tag = '%s.%s(Line:%d)'; // 占位符String callerClazzName = caller.getClassName(); // 獲取到類名callerClazzName = callerClazzName.substring(callerClazzName.lastIndexOf('.') + 1);tag = String.format(tag, callerClazzName, caller.getMethodName(), caller.getLineNumber()); // 替換tag = TextUtils.isEmpty(customTagPrefix) ? tag : customTagPrefix + ':' + tag;return tag;}/*** * 打印控制臺顯示不了那么長的日志問題 * * @param msg */public static void logE(String msg) { // 信息太長,分段打印if (!allowE) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);// 因為String的length是字符數量不是字節數量所以為了防止中文字符過多，// 把4*1024的MAX字節打印長度改為2001字符數int max_str_length = 2001 - tag.length();// 大于4000時while (msg.length() > max_str_length) {// Log.e(tag, msg.substring(0, max_str_length));LogUtils.e(msg.substring(0, max_str_length));msg = msg.substring(max_str_length);}// 剩余部分// Log.e(tag, msg);LogUtils.e(msg);}/** * 自定義的logger */public static CustomLogger customLogger;public interface CustomLogger {void d(String tag, String content);void d(String tag, String content, Throwable tr);void e(String tag, String content);void e(String tag, String content, Throwable tr);void i(String tag, String content);void i(String tag, String content, Throwable tr);void v(String tag, String content);void v(String tag, String content, Throwable tr);void w(String tag, String content);void w(String tag, String content, Throwable tr);void w(String tag, Throwable tr);void wtf(String tag, String content);void wtf(String tag, String content, Throwable tr);void wtf(String tag, Throwable tr);}public static void d(String content) {if (!allowD) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.d(tag, content);} else {Log.d(tag, content);}}public static void d(String content, Throwable tr) {if (!allowD) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.d(tag, content, tr);} else {Log.d(tag, content, tr);}}public static void e(String content) {if (!allowE) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.e(tag, content);} else {Log.e(tag, content);}if (isSaveLog) {point(cacheDirPath, tag, content);}}public static void e(String content, Throwable tr) {if (!allowE) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.e(tag, content, tr);} else {Log.e(tag, content, tr);}if (isSaveLog) {point(cacheDirPath, tag, tr.getMessage());}}public static void e(Throwable tr) {if (!allowE) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.e(tag, '', tr);} else {Log.e(tag, '', tr);}if (isSaveLog) {point(cacheDirPath, tag, tr.getMessage());}}public static void i(String content) {if (!allowI) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.i(tag, content);} else {Log.i(tag, content);}}public static void i(String content, Throwable tr) {if (!allowI) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.i(tag, content, tr);} else {Log.i(tag, content, tr);}}public static void v(String content) {if (!allowV) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.v(tag, content);} else {Log.v(tag, content);}}public static void v(String content, Throwable tr) {if (!allowV) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.v(tag, content, tr);} else {Log.v(tag, content, tr);}}public static void w(String content) {if (!allowW) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.w(tag, content);} else {Log.w(tag, content);}}public static void w(String content, Throwable tr) {if (!allowW) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.w(tag, content, tr);} else {Log.w(tag, content, tr);}}public static void w(Throwable tr) {if (!allowW) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.w(tag, tr);} else {Log.w(tag, tr);}}public static void wtf(String content) {if (!allowWtf) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.wtf(tag, content);} else {Log.wtf(tag, content);}}public static void wtf(String content, Throwable tr) {if (!allowWtf) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.wtf(tag, content, tr);} else {Log.wtf(tag, content, tr);}}public static void wtf(Throwable tr) {if (!allowWtf) return;StackTraceElement caller = getCallerStackTraceElement();String tag = generateTag(caller);if (customLogger != null) {customLogger.wtf(tag, tr);} else {Log.wtf(tag, tr);}}private static StackTraceElement getCallerStackTraceElement() {return Thread.currentThread().getStackTrace()[4];}public static void point(String path, String tag, String msg) {if (isSDAva()) {path = cacheDirPath;Date date = new Date();SimpleDateFormat dateFormat = new SimpleDateFormat('', Locale.SIMPLIFIED_CHINESE);dateFormat.applyPattern('yyyy');path = path + dateFormat.format(date) + '/';dateFormat.applyPattern('MM');path += dateFormat.format(date) + '/';dateFormat.applyPattern('dd');path += dateFormat.format(date) + '.log';dateFormat.applyPattern('[yyyy-MM-dd HH:mm:ss]');String time = dateFormat.format(date);File file = new File(path);if (!file.exists()) createDipPath(path);BufferedWriter out = null;try {out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, true)));out.write(time + ' ' + tag + ' ' + msg + 'rn');} catch (Exception e) {e.printStackTrace();} finally {try {if (out != null) {out.close();}} catch (IOException e) {e.printStackTrace();}}}}/** * 根據文件路徑 遞歸創建文件 * * @param file */public static void createDipPath(String file) {String parentFile = file.substring(0, file.lastIndexOf('/'));File file1 = new File(file);File parent = new File(parentFile);if (!file1.exists()) {parent.mkdirs();try {file1.createNewFile();LogUtils.e('日志文件的路徑是' + file1.getAbsolutePath());} catch (IOException e) {e.printStackTrace();}}}/** * A little trick to reuse a formatter in the same thread */private static class ReusableFormatter {private Formatterformatter;private StringBuilderbuilder;public ReusableFormatter() {builder = new StringBuilder();formatter = new Formatter(builder);}public String format(String msg, Object... args) {formatter.format(msg, args);String s = builder.toString();builder.setLength(0);return s;}}private static final ThreadLocal<ReusableFormatter> thread_local_formatter = new ThreadLocal<ReusableFormatter>() {protected ReusableFormatter initialValue() {return new ReusableFormatter();}};public static String format(String msg, Object... args) {ReusableFormatter formatter = thread_local_formatter.get();return formatter.format(msg, args);}public static boolean isSDAva() {if (cacheDirPath == null) cacheDirPath = App.getAppContext().getExternalFilesDir('log').getAbsolutePath();if (!TextUtils.isEmpty(cacheDirPath)) {return true;} else {return false;}}}

以上這篇Android封裝對原生Log進行封裝的操作就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持好吧啦網。