关于安卓开始实现最简单地获取系统时间

package lianxi;

import com.example.jichu_lianxi.R;

import android.app.Activity; 

import android.os.Bundle; 

import android.text.format.Time; 

import android.widget.TextView; 
import android.widget.Toast;

public class GetTime extends Activity { 

/** Called when the activity is first created. */ 

@Override 

public void onCreate(Bundle savedInstanceState) { 

super.onCreate(savedInstanceState); 

setContentView(R.layout.gettime); 

TextView myTextView = (TextView)findViewById(R.id.getTime); 
Time time = new Time("GMT+8"); 
time.setToNow(); 
int year = time.year;           //获取年份
int month = time.month;         //获取月份
int day = time.monthDay;        //获取日号
int hour = time.hour;           //获取小时，注意，这里的小时是24制的
int minute = time.minute;       //获取分钟
int sec = time.second;          //获取秒
String time_s = "当前时间为：" + year + "年 " + month + "月 " + day + "日 " + hour + "时 " + minute + "分 " + sec + "秒"; 
Toast.makeText(GetTime.this,time_s, Toast.LENGTH_SHORT).show();


} 

} 

第二种方法：

package lianxi;

import com.example.jichu_lianxi.R;

import android.app.Activity; 

import android.os.Bundle; 

import android.text.format.Time; 

import android.widget.TextView; 
import android.widget.Toast;

public class GetTime extends Activity { 

/** Called when the activity is first created. */ 

@Override 

public void onCreate(Bundle savedInstanceState) { 

super.onCreate(savedInstanceState); 

setContentView(R.layout.gettime); 

 Calendar c = Calendar.getInstance();
                int year = c.get(Calendar.YEAR);   //获取年份 
                int month = c.get(Calendar.MONTH);  //获取月份
                int day = c.get(Calendar.DAY_OF_MONTH);  //获取日期
                int hour = c.get(Calendar.HOUR_OF_DAY);  //获取小时
                int minute = c.get(Calendar.MINUTE); //获取分钟
String time_s = "当前时间为：" + year + "年 " + month + "月 " + day + "日 " + hour + "时 " + minute + "分 ";
Toast.makeText(GetTime.this,time_s, Toast.LENGTH_SHORT).show();


} 

} 

效果图：
     

参考于    http://www.01yun.com/mobile_development/20130425/378941.html （转载请说明）