calendar 獲取系統時間
阿新 • • 發佈:2018-12-20
文章目錄
1、簡介
使用calendar 來獲取系統時間,或者設定的時區時間
2、檔案結構
3、功能程式碼
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(); //獲取美國時區時間 getCurrentTimeZone(); //獲取手機系統時區 getCurrentLanguage(); //獲取 手機系統語言 getCurrentTime(); //獲取當前手機時間 } private void getUSTimeZone() { Calendar calendarUS = Calendar.getInstance(); calendarUS.setTimeZone(TimeZone.getTimeZone("UT-6:00")); //北美的時區 int hourUs = calendarUS.get(Calendar.HOUR_OF_DAY); int minuteUs = calendarUS.get(Calendar.MINUTE); System.out.println("獲取美國時區時間: " + hourUs + "時" + minuteUs + " 分"); } //獲取當前系統時間 private void getCurrentTime() { Calendar calendar = Calendar.getInstance(); int year ; int month; int day; int hour ; int minute; int second; boolean is24Time = DateFormat.is24HourFormat(this);//判斷系統是不是 24 小時制 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("獲取的系統時間: " + "year: " + year + "\n" + "month: " + month + "\n" + "day: " + day + "\n" + "hour: " + hour + "\n" + "minute: " + minute + "\n" + "second: " + second + "\n" ); } /** * 獲取當前時區 * @return */ public String getCurrentTimeZone() { TimeZone tz = TimeZone.getDefault(); String strTz = tz.getDisplayName(false, TimeZone.SHORT); System.out.println("系統時區:" + strTz); return strTz; } /** * 獲取當前系統語言格式 * @return */ public String getCurrentLanguage(){ Locale locale = getResources().getConfiguration().locale; String language=locale.getLanguage(); String country = locale.getCountry(); String lc=language+"_"+country; System.out.println("系統語言:" + lc); return lc; } }
4、log 列印
文獻參考:
Android時間時區設定和獲取
https://blog.csdn.net/zhongshujunqia/article/details/53433306