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)