Android(安卓)日志打印工具类 可显示打印所在的方法和行号
16lz
2021-12-04
Android 日志打印工具类 可显示打印所在的方法和行号。便于开发人员查看Log信息~~
package com.newland.util;import java.io.BufferedWriter;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Formatter;import java.util.Locale;import android.os.Environment;import android.text.TextUtils;import android.util.Log;/** * Log工具，类似android.util.Log。 tag自动产生，格式: * customTagPrefix:className.methodName(Line:lineNumber), * customTagPrefix为空时只输出：className.methodName(Line:lineNumber)。 */public class LogUtil { public static String customTagPrefix = "";// 自定义Tag的前缀，可以是作者名 public static boolean isSaveLog = false; // 是否把保存日志到SD卡中 public static final String LOG_PATH = Environment.getExternalStorageDirectory().getPath(); // SD卡中的根目录 private static DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.SIMPLIFIED_CHINESE); private LogUtil() { } // 容许打印日志的类型，默认是true，设置为false则不打印 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(); // 获取到类名 callerClazzName = callerClazzName.substring(callerClazzName.lastIndexOf(".") + 1); tag = String.format(tag, callerClazzName, caller.getMethodName(), caller.getLineNumber()); // 替换 tag = TextUtils.isEmpty(customTagPrefix) ? tag : customTagPrefix + ":" + tag; return tag; } /** * 自定义的logger */ public static CustomLogger customLogger; public interface CustomLogger { void d(String tag, String content); void d(String tag, String content, Throwable e); void e(String tag, String content); void e(String tag, String content, Throwable e); void i(String tag, String content); void i(String tag, String content, Throwable e); void v(String tag, String content); void v(String tag, String content, Throwable e); void w(String tag, String content); void w(String tag, String content, Throwable e); void w(String tag, Throwable tr); void wtf(String tag, String content); void wtf(String tag, String content, Throwable e); 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 e) { if (!allowD) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.d(tag, content, e); } else { Log.d(tag, content, e); } } 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(LOG_PATH, tag, content); } } public static void e(Throwable e) { if (!allowE) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.e(tag, "error", e); } else { Log.e(tag, e.getMessage(), e); } if (isSaveLog) { point(LOG_PATH, tag, e.getMessage()); } } public static void e(String content, Throwable e) { if (!allowE) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.e(tag, content, e); } else { Log.e(tag, content, e); } if (isSaveLog) { point(LOG_PATH, tag, e.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); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void i(String content, Throwable e) { if (!allowI) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.i(tag, content, e); } else { Log.i(tag, content, e); } if (isSaveLog) { point(LOG_PATH, tag, content); } } 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); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void v(String content, Throwable e) { if (!allowV) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.v(tag, content, e); } else { Log.v(tag, content, e); } if (isSaveLog) { point(LOG_PATH, tag, content); } } 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); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void w(String content, Throwable e) { if (!allowW) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.w(tag, content, e); } else { Log.w(tag, content, e); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void w(Throwable e) { if (!allowW) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.w(tag, e); } else { Log.w(tag, e); } if (isSaveLog) { point(LOG_PATH, tag, e.toString()); } } 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); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void wtf(String content, Throwable e) { if (!allowWtf) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.wtf(tag, content, e); } else { Log.wtf(tag, content, e); } if (isSaveLog) { point(LOG_PATH, tag, content); } } public static void wtf(Throwable e) { if (!allowWtf) { return; } StackTraceElement caller = getCallerStackTraceElement(); String tag = generateTag(caller); if (customLogger != null) { customLogger.wtf(tag, e); } else { Log.wtf(tag, e); } if (isSaveLog) { point(LOG_PATH, tag, e.toString()); } } private static StackTraceElement getCallerStackTraceElement() { return Thread.currentThread().getStackTrace()[4]; } public static void point(String path, String tag, String msg) { if (isSDAva()) { long timestamp = System.currentTimeMillis(); String time = formatter.format(new Date()); path = path + "/logs/log-" + time + "-" + timestamp + ".log"; 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 + "\r\n"); } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) { out.close(); } } catch (IOException e) { e.printStackTrace(); } } } } /** * 根据文件路径 递归创建文件 */ 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(); } catch (IOException e) { e.printStackTrace(); } } } private static class ReusableFormatter { private Formatter formatter; private StringBuilder builder; 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); } private static boolean isSDAva() { return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) || Environment.getExternalStorageDirectory().exists(); }} 更多相关文章
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