关于安卓开始实现最简单地获取系统时间

 1 package lianxi;
 2 
 3 import com.example.jichu_lianxi.R;
 4 
 5 import android.app.Activity; 
 6 
 7 import android.os.Bundle; 
 8 
 9 import android.text.format.Time; 
10 
11 import android.widget.TextView; 
12 import android.widget.Toast;
13 
14 public class GetTime extends Activity { 
15 
16 /** Called when the activity is first created. */ 
17 
18 @Override 
19 
20 public void onCreate(Bundle savedInstanceState) { 
21 
22 super.onCreate(savedInstanceState); 
23 
24 setContentView(R.layout.gettime); 
25 
26 TextView myTextView = (TextView)findViewById(R.id.getTime); 
27 Time time = new Time("GMT+8"); 
28 time.setToNow(); 
29 int year = time.year;           //获取年份
30 int month = time.month;         //获取月份
31 int day = time.monthDay;        //获取日号
32 int hour = time.hour;           //获取小时，注意，这里的小时是24制的
33 int minute = time.minute;       //获取分钟
34 int sec = time.second;          //获取秒
35 String time_s = "当前时间为：" + year + "年 " + month + "月 " + day + "日 " + hour + "时 " + minute + "分 " + sec + "秒"; 
36 Toast.makeText(GetTime.this,time_s, Toast.LENGTH_SHORT).show();
37 
38 
39 } 
40 
41 }

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();


} 

}