package com.example.tssh.mytimetest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.format.DateFormat;

import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;

public class MainActivity extends AppCompatActivity {

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

          getUSTimeZone();    //获取美国时区时间
          getCurrentTimeZone();   //获取手机系统时区
          getCurrentLanguage();  //获取 手机系统语言
          getCurrentTime(); //获取当前手机时间
    }


    private void getUSTimeZone() {
        Calendar calendarUS = Calendar.getInstance();
        calendarUS.setTimeZone(TimeZone.getTimeZone("UT-6:00"));  //北美的时区
        int  hourUs   =  calendarUS.get(Calendar.HOUR_OF_DAY);
        int minuteUs = calendarUS.get(Calendar.MINUTE);
        System.out.println("获取美国时区时间： "  + hourUs + "时" + minuteUs + " 分");
    }

//获取当前系统时间
    private void getCurrentTime() {
        Calendar calendar = Calendar.getInstance();
        int year ;
        int  month;
        int  day;
        int hour ;
        int minute;
        int second;
        boolean is24Time = DateFormat.is24HourFormat(this);//判断系统是不是 24 小时制

        year = calendar.get(Calendar.YEAR);
        month = calendar.get(Calendar.MONTH) + 1;
        day = calendar.get(Calendar.DAY_OF_MONTH);
        if (is24Time) {
            hour   =  calendar.get(Calendar.HOUR_OF_DAY);
        }else {
            hour   =  calendar.get(Calendar.HOUR);
        }
        minute = calendar.get(Calendar.MINUTE);
        second = calendar.get(Calendar.SECOND);

        System.out.println("获取的系统时间： " +
        "year: " + year + "\n" +
                "month: " + month + "\n"  +
                "day: " + day + "\n"   +
                "hour: " + hour + "\n"   +
                "minute: " + minute + "\n" +
                        "second: " + second + "\n"

        );
    }


    /**
         * 获取当前时区
         * @return
         */
        public  String getCurrentTimeZone() {
            TimeZone tz = TimeZone.getDefault();
            String strTz = tz.getDisplayName(false, TimeZone.SHORT);
            System.out.println("系统时区：" + strTz);
            return strTz;

        }


        /**
         * 获取当前系统语言格式
         * @return
         */
        public  String getCurrentLanguage(){
            Locale locale = getResources().getConfiguration().locale;
            String language=locale.getLanguage();
            String country = locale.getCountry();
            String lc=language+"_"+country;
            System.out.println("系统语言：" + lc);
            return lc;
        }
}