自带行号的log日志提示

淡淡的烟草味﹌ 2021-09-16 13:30 329阅读 0赞

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使用环境：

需要在打印log的同时，提示在项目类之中的哪一行。

使用方法：

copy

public class LogUtil {
        private static boolean isDebug = false;
        // 是否在log中显示行号
        private static boolean SHOW_LINE_NUMBER_IN_LOG = isDebug;
        private static final String TAG = "com.sgcc.pda";
        //是否已初始化
        private static boolean initFlag = false;
    
        public static void init(boolean debugFlag) {
            isDebug = debugFlag;
            SHOW_LINE_NUMBER_IN_LOG = debugFlag;
            initFlag = true;
        }
    
        /**
         * 打印Log.w信息
         *
         * @param aPrintLogStr 打印信息字符串
         */
        public static void w(String aPrintLogStr) {
            LOG(TAG, aPrintLogStr, Log.WARN, false);
        }
    
        public static void w(String tag, String aPrintLogStr) {
            LOG(tag, aPrintLogStr, Log.WARN, false);
        }
    
        public static void i(String tag, String aPrintLogStr) {
            LOG(tag, aPrintLogStr, Log.INFO, false);
        }
    
        public static void i(String aPrintLogStr) {
            LOG(TAG, aPrintLogStr, Log.INFO, false);
        }
    
        public static void callerI(String aPrintLogStr) {
            LOG(TAG, aPrintLogStr, Log.INFO, true);
        }
    
        public static void d(String tag, String aPrintLogStr) {
            LOG(tag, aPrintLogStr, Log.DEBUG, false);
        }
    
        public static void d(String aPrintLogStr) {
            LOG(TAG, aPrintLogStr, Log.DEBUG, false);
        }
    
        public static void e(String tag, String aPrintLogStr) {
            LOG(tag, aPrintLogStr, Log.ERROR, false);
        }
        private static int LOG_MAXLENGTH = 2000;
    
        public static void e(String aPrintLogStr) {
            LOG(TAG, aPrintLogStr, Log.ERROR, false);
        }
    
        public static void v(String tag, String aPrintLogStr) {
            LOG(tag, aPrintLogStr, Log.VERBOSE, false);
        }
    
        /**
         * @param tag        log的tag
         * @param content    log的内容
         * @param logType    log的类型,如Log.INFO,Log.DEBUG等
         * @param showCaller 是否显示调用者的方法名和行号等
         */
        private static void LOG(String tag, String content, int logType, boolean showCaller) {
            if (!initFlag) {
                Log.e("LogUtil", "LogUtil没有初始化，请先初始化后使用，如果未初始化Log将不会输出显示");
            }
            if (isDebug) {
                if (SHOW_LINE_NUMBER_IN_LOG) {
                    Throwable throwable = new Throwable();
                    //LogUtils.LOGI的depth是0, 该函数的depth是1, 调用者的depth是2,调用者的调用者是3
                    int methodDepth = 2;
                    StackTraceElement[] stackTraceElements = throwable.getStackTrace();
    
                    if (methodDepth < stackTraceElements.length) {
                        StackTraceElement element = stackTraceElements[methodDepth];
    
                        if (showCaller) {
                            if ((methodDepth + 1) < stackTraceElements.length) {
                                StackTraceElement elementCaller = stackTraceElements[methodDepth + 1];
                                if (elementCaller != null && elementCaller.getFileName() != null) {
                                    String callerClassName = elementCaller.getFileName().substring(0, elementCaller.getFileName().lastIndexOf("."));
                                    String className = element.getFileName().substring(0, element.getFileName().lastIndexOf("."));
                                    String loginfo = String.format("[%s.%s() (%s:%d)]", callerClassName, elementCaller.getMethodName(), elementCaller.getFileName(), elementCaller.getLineNumber());
                                    loginfo = loginfo + "\n";
                                    loginfo = loginfo + "    " + String.format("[%s.%s() (%s:%d)]%s", className, element.getMethodName(), element.getFileName(), element.getLineNumber(), content);
    
                                    content = loginfo;
                                }
                            }
                        } else {
                            if (element != null && element.getFileName() != null) {
                                String className = element.getFileName().substring(0, element.getFileName().lastIndexOf("."));
                                String loginfo = String.format("[%s.%s() (%s:%d)]%s", className, element.getMethodName(), element.getFileName(), element.getLineNumber(), content);
                                content = loginfo;
                            }
                        }
                    }
                }
    
                switch (logType) {
                    case Log.INFO:
                        Log.i(tag, "===================>" + content);
                        break;
                    case Log.DEBUG:
                        Log.d(tag, "===================>" + content);
                        break;
                    case Log.ERROR:
                        Log.e(tag, "===================>" + content);
                        break;
                    case Log.WARN:
                        Log.w(tag, "===================>" + content);
                        break;
                    case Log.VERBOSE:
                        Log.v(tag, "===================>" + content);
                        break;
                    default:
                        break;
                }
            }
        }
    }

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[70]: /images/20210901/8c6d1642e14742b7beefa84521857bc9.png