AndroidはグローバルLOG印刷ログを定義し、呼び出し元に関する情報を表示します.

public class LogUtils {
    private static final boolean VERBOSE = true;
    private static final boolean DEBUG = true;
    private static final boolean INFO = true;
    private static final boolean WARN = true;
    private static final boolean ERROR = true;
    private static final String SEPARATOR = ",";

    public static void v(String message) {
        if (VERBOSE) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            String tag = getDefaultTag(stackTraceElement);
            Log.v(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void v(String tag, String message) {
        if (VERBOSE) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            if (TextUtils.isEmpty(tag)) {
                tag = getDefaultTag(stackTraceElement);
            }
            Log.v(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void d(String message) {
        if (DEBUG) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            String tag = getDefaultTag(stackTraceElement);
            Log.d(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void d(String tag, String message) {
        if (DEBUG) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            if (TextUtils.isEmpty(tag)) {
                tag = getDefaultTag(stackTraceElement);
            }
            Log.d(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void i(String message) {
        if (INFO) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            String tag = getDefaultTag(stackTraceElement);
            Log.i(tag, message);
        }
    }

    public static void i(String tag, String message) {
        if (INFO) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            if (TextUtils.isEmpty(tag)) {
                tag = getDefaultTag(stackTraceElement);
            }
            Log.i(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void w(String message) {
        if (WARN) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            String tag = getDefaultTag(stackTraceElement);
            Log.w(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void w(String tag, String message) {
        if (WARN) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            if (TextUtils.isEmpty(tag)) {
                tag = getDefaultTag(stackTraceElement);
            }
            Log.w(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    public static void e(String message) {
        if (ERROR) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            String tag = getDefaultTag(stackTraceElement);
            Log.e(tag, message);
        }
    }

    public static void e(String tag, String message) {
        if (ERROR) {
            StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
            if (TextUtils.isEmpty(tag)) {
                tag = getDefaultTag(stackTraceElement);
            }
            Log.e(tag, getLogInfo(stackTraceElement) + message);
        }
    }

    /**  *      TAG  .    MainActivity.java        .  TAG MainActivity  */  public static String getDefaultTag(StackTraceElement stackTraceElement) {
        String fileName = stackTraceElement.getFileName();
        String stringArray[] = fileName.split("\\.");
        String tag = stringArray[0];
        return tag;
    }

    /**  *             */  public static String getLogInfo(StackTraceElement stackTraceElement) {
        StringBuilder logInfoStringBuilder = new StringBuilder();
        //      
        String threadName = Thread.currentThread().getName();
        //     ID
        long threadID = Thread.currentThread().getId();
        //      . xxx.java
        String fileName = stackTraceElement.getFileName();
        //     .   +  
        String className = stackTraceElement.getClassName();
        //       
        String methodName = stackTraceElement.getMethodName();
        //         
        int lineNumber = stackTraceElement.getLineNumber();
        logInfoStringBuilder.append("[ ");
        logInfoStringBuilder.append("threadID=" + threadID).append(SEPARATOR);
        logInfoStringBuilder.append("threadName=" + threadName).append(SEPARATOR);
        logInfoStringBuilder.append("fileName=" + fileName).append(SEPARATOR);
        logInfoStringBuilder.append("className=" + className).append(SEPARATOR);
        logInfoStringBuilder.append("methodName=" + methodName).append(SEPARATOR);
        logInfoStringBuilder.append("lineNumber=" + lineNumber);
        logInfoStringBuilder.append(" ] ");
        return logInfoStringBuilder.toString();
    }

}