Log日志工具类

package zq.utils;
import android.text.TextUtils;
import android.util.Log;
import java.util.ArrayList;

/**
* 打印
*/
public class Logger {
private static final String ERROR = “The log message is null.”;
private static final int LENGTH_PER = 4000;
public static String MYLOG = “zqlog”;
public static void setMYLOG(String MYLOG) {
Logger.MYLOG = MYLOG;
}
private enum Level {
V, D, I, W, E
}
//MainActivity.CountDown(Line:91): //此处为根据堆栈关系获取调用行数与类名//排队序列 前两位已被占用
private static String generateTag() {
StackTraceElement caller = Thread.currentThread().getStackTrace()[4];
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(MYLOG) ? tag : MYLOG + “:”
+ tag;
return tag;
}
public static void println(Object msg) {
if (BaseConfig.LOG)
System.out.println(generateTag()+”:”+msg);
}
public static void v(String msg) {
log(generateTag(), msg, Level.V);
}

public static void d(String msg) {    log(generateTag(), msg, Level.D);}public static void i(String msg) {    log(generateTag(), msg, Level.I);}public static void w(String msg) {    log(generateTag(), msg, Level.W);}public static void e(String msg) {    log(generateTag(), msg, Level.E);}private static ArrayList<String> split(String msg) {    ArrayList<String> strings = null;    if (msg != null) {        int length = msg.length();        int count = length / LENGTH_PER;        int remain = length % LENGTH_PER;        strings = new ArrayList<String>();        if (count == 0)            strings.add(msg);        else {            for (int i = 0; i < count; i++) {                int start = i * LENGTH_PER;                int end = start + LENGTH_PER - 1;                strings.add(msg.substring(start, end));            }            if (remain != 0) {                int start = count * LENGTH_PER;                int end = length - 1;                strings.add(msg.substring(start, end));            }        }    }    return strings;}private static void log(String tag, String log, Level level) {    if (!BaseConfig.LOG)        return;    // 将字符串分段打印,解决logcat打印不全的问题    ArrayList<String> strings = split(log);    switch (level) {        case V:            if (strings == null)                Log.v(tag, ERROR);            else                for (String string : strings)                    Log.v(tag, string);            break;        case D:            if (strings == null)                Log.d(tag, ERROR);            else                for (String string : strings)                    Log.d(tag, string);            break;        case I:            if (strings == null)                Log.i(tag, ERROR);            else                for (String string : strings)                    Log.i(tag, string);            break;        case W:            if (strings == null)                Log.w(tag, ERROR);            else                for (String string : strings)                    Log.w(tag, string);            break;        case E:            if (strings == null)                Log.e(tag, ERROR);            else                for (String string : strings)                    Log.e(tag, string);            break;    }}

}