Android 日期和时间的使用实例详解

android 日期和时间的使用

日期和时间的使用；

1：弹出框timepickerdialog,datepickerdialog

2：组件timepicker,datepicker

timepickerdialog的使用：通过点击button显示图一，然后用户可以设置时间

datepickerdialog的使用只需要将timepickerdialog修改成datepickerdialog, timepickerdialog.ontimesetlistener 分别修改成datepickerdialog,ondatesetlistener既可

public static class timepickerfragment extends dialogfragment
              implements timepickerdialog.ontimesetlistener {
    //用户创建弹出时间框的方法
  @override
  public dialog oncreatedialog(bundle savedinstancestate) {
    // use the current time as the default values for the picker
    final calendar c = calendar.getinstance();
    int hour = c.get(calendar.hour_of_day);
    int minute = c.get(calendar.minute);

    // create a new instance of timepickerdialog and return it
    return new timepickerdialog(getactivity(), this, hour, minute,
        dateformat.is24hourformat(getactivity()));
  }

  public void ontimeset(timepicker view, int hourofday, int minute) {
    // do something with the time chosen by the user
  }
}
 
  

 android:layout_width="wrap_content" 
  android:layout_height="wrap_content"
  android:text="@string/pick_time" 
  android:onclick="showtimepickerdialog" />

public void showtimepickerdialog(view v) {
  dialogfragment newfragment = new timepickerfragment();
  newfragment.show(getsupportfragmentmanager(), "timepicker");
}

datepickerdialog的代码：

public class datepickerfragment extends dialogfragment implements datepickerdialog.ondatesetlistener {

  //用户创建日期对话框的时间方法
  @override
  public dialog oncreatedialog(bundle savedinstancestate) {

    calendar c = calendar.getinstance();
    int year = c.get(calendar.year);
    int month = c.get(calendar.month);
    int day = c.get(calendar.day_of_month);
    datepickerdialog dialog = new datepickerdialog(getactivity(), this, year, month, day);
    return dialog;
  }



  @override
  public void ondateset(datepicker view, int year, int monthofyear, int dayofmonth) {



  }

}

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