Android开发中 获取当前Android的年月日时分秒的时间

 

 

Android的文件有建议用Time代替Calendar。用Time对CPU的负荷会较小。在写Widget时特别重要。

Time t=new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone资料。

 

package itokit.com;    
   
import android.app.Activity;    
import android.os.Bundle;    
import android.text.format.Time;    
import android.widget.TextView;    
   
public class ShowTime extends Activity {    
    /** Called when the activity is first created. */   
    @Override   
    public void onCreate(Bundle savedInstanceState) {    
        super.onCreate(savedInstanceState);    
        setContentView(R.layout.main);    
            
        TextView myTextView = (TextView)findViewById(R.id.myTextView);    
        Time time = new Time("GMT+8");     
        time.setToNow();    
        int year = time.year;    
        int month = time.month;    
        int day = time.monthDay;    
        int minute = time.minute;    
        int hour = time.hour;    
        int sec = time.second;    
        myTextView.setText("当前时间为：" + year +     
                            "年 " + month +     
                            "月 " + day +     
                            "日 " + hour +     
                            "时 " + minute +     
                            "分 " + sec +     
                            "秒");    
    }    
}   

唯一不足是取出时间只有24小时模式.

 

long time=System.currentTimeMillis();
 final Calendar mCalendar=Calendar.getInstance();
 mCalendar.setTimeInMillis(time);
 取得小时：mHour=mCalendar.get(Calendar.HOUR);
 取得分钟：mMinuts=mCalendar.get(Calendar.MINUTE);

 

 如何获取Android系统时间是24小时制还是12小时制 
        ContentResolver cv = this.getContentResolver();
        String strTimeFormat = android.provider.Settings.System.getString(cv,
                                           android.provider.Settings.System.TIME_12_24);
       
        if(strTimeFormat.equals("24"))

       {
               Log.i("activity","24");
        }

Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)

利用Calendar获取
 Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)
                    Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
                   month = c.grt(Calendar.MONTH)
                   day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                     minute = c.get(Calendar.MINUTE)