Question

android中如何获得系统当前时间

Answer 1

使用Java的那样写法貌似都是相差8个小时还是多少。可以用sqlite的查询来实现。
public class DAO
{
public Cursor selectTT()
{
SQLiteDatabase db = this.getWritableDatabase();
String sql="select datetime('now')";
Cursor cursor=db.rawQuery(sql,null);
return cursor;
}

public String selectAJ(Cursor cr)
{
String result="";
for(cr.moveToFirst();!cr.isAfterLast();cr.moveToNext())
{
result=cr.getString(0);
}
return result;
}

}
DAO dao=new DAO();
String thisTime=dao.selectAJ(dao.selectTT());
//这样也能得到，就是麻烦一点，还有很多简介方法你可以挖掘一下。

Answer 2

import java.util.Calendar;
import android.app.Activity;import android.os.Bundle;
public class GetSystemTime001Activity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Calendar c=Calendar.getInstance();

String time=c.get(Calendar.YEAR)+"-"+
formatTime(c.get(Calendar.MONTH)+1)+"-"+//month加一
formatTime(c.get(Calendar.DAY_OF_MONTH))+" "+
formatTime(c.get(Calendar.HOUR_OF_DAY))+":"+
formatTime(c.get(Calendar.MINUTE))+":"+
formatTime(c.get(Calendar.SECOND));
System.out.println(time);
}

private String formatTime(int t){
return t>=10? ""+t:"0"+t;//三元运算符 t>10时取 ""+t
}
}

Answer 3

new Date();

Answer 4

跟java获取方式相同

Answer 5

你自己设定或是由SIM卡自动提供