android log util 中的行号

Question

有没有办法用android Log打印文件行号？

Answer 1

用于获取行号`

public static int getLineNumber() {
    return Thread.currentThread().getStackTrace()[2].getLineNumber();
}
or 
Thread.currentThread().getStackTrace()[2].getLineNumber()
 in Log()

` 尝试一下会对你有帮助....

Answer 2

使用带有日志行号的 Timber 更好地登录 Android

在 /app/build.gradle 文件中

implementation 'com.jakewharton.timber:timber:4.7.1'

在应用类

Timber.plant(new Timber.DebugTree() {
                @Override
                protected @Nullable String createStackElementTag(@NotNull StackTraceElement element) {
                    return super.createStackElementTag(element) + ":"+element.getLineNumber();
                }
            });

Answer 3

object Logg {
  private fun tag(): String? {
    return Thread.currentThread().stackTrace[4].let {
      val link = "(${it.fileName}:${it.lineNumber})"
      val path = "App# ${it.className.substringAfterLast(".")}.${it.methodName}"
      if (path.length + link.length > 80) {
        "${path.take(80 - link.length)}...${link}"
      } else {
        "$path$link"
      }
    }
  }

  fun v(msg: String?) {
    Log.v(tag(), "💜 $msg")
  }

  fun d(msg: String?) {
    Log.d(tag(), "💙 $msg")
  }

  fun i(msg: String?) {
    Log.i(tag(), "💚 $msg")
  }

  fun w(msg: String?) {
    Log.w(tag(), "💛 $msg")
  }

  fun w(e: Throwable?) {
    Log.w(tag(), "💛 ${e?.localizedMessage}")
    e?.printStackTrace()
  }

  fun w(e: Exception?) {
    Log.w(tag(), "💛 ${e?.localizedMessage}")
    e?.printStackTrace()
  }
  
  fun w(e: LinkageError?) {
    Log.w(tag(), "💛 ${e?.localizedMessage}")
    e?.printStackTrace()
  }

  fun e(msg: String?) {
    Log.e(tag(), "💔 $msg")
  }

  fun e(e: Throwable?) {
    Log.e(tag(), "💔 ${e?.localizedMessage}")
    e?.printStackTrace()
  }

  fun e(e: java.lang.Exception?) {
    Log.e(tag(), "💔 ${e?.localizedMessage}")
    e?.printStackTrace()
  }
}

Answer 4

为了实现这一点，这就是我所做的（%L 输出行号）：

## log4j.properties
log4j.rootLogger=DEBUG, CA

log4j.appender.CA=org.apache.log4j.ConsoleAppender

log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x (%F:%L) - %m%n

Answer 5

使用类名-功能名称-行代码显示日志：

fun getTrackLog(): String {
        val stackTrackElement = Thread.currentThread().getStackTrace()[2]
        return  "(" + stackTrackElement.className + ":" + Thread.currentThread().getStackTrace()[2].getLineNumber() + ") " + stackTrackElement.methodName + ": "
    }

log.d(getTrackLog())