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)
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