Android-log

package com.example.a3java;

import android.util.Log;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import java.text.DateFormat;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;


///模块 : 日志
///开发/时间 : 20210/0816/1150
public final class logs {
    //Log输出类名
    private static String className;
    //Log输出方法
    private static String methodName;
    //Log输出行号
    private static int lineNumber;
    //Log输出时间
    private static String dateStr;


    ///是否可Debug状态
    public static boolean isDebuggable() {
        return BuildConfig.DEBUG;
    }

    ///创建Log输出的基本信息
    private static String createLog(String log) {
        StringBuffer buffer = new StringBuffer();
        buffer.append(dateStr);
        buffer.append(" [");
        buffer.append(methodName);
        buffer.append("()");
        buffer.append(" line:");
        buffer.append(lineNumber);
        buffer.append("] ");
        buffer.append("💙 ");
        buffer.append(log);

        return buffer.toString();
    }

    ///取得输出所在位置的信息 className methodName lineNumber
    private static void getMethodNames(StackTraceElement[] sElements) {
        className = sElements[1].getFileName().split("\\.")[0];
        methodName = sElements[1].getMethodName();
        lineNumber = sElements[1].getLineNumber();
        dateStr = getDateStr();
    }

    ///当前日志打印的时间
    private static String getDateStr() {
        Date date = new Date();
        SimpleDateFormat format = new SimpleDateFormat ("yyyy-MM-dd hh:mm:ss");
        return format.format(date);
    }

    public static void e(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.e(className, createLog(message));
    }

    public static void i(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.i(className, createLog(message));
    }

    public static void d(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.d(className, createLog(message));
    }

    public static void v(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.v(className, createLog(message));
    }

    public static void w(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.w(className, createLog(message));
    }

    public static void wtf(String message) {
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.wtf(className, createLog(message));
    }

}

package com.example.a3java;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        helloWord();
    }

    //实例方法
    void helloWord() {
       logs.e("helloWord"); //日志
    }
}

E/MainActivity: 2021-08-16 01:59:58 [helloWord() line:19] 💙 helloWord