TimePickerDialog 和 DatePickDialog

最新推荐文章于 2021-06-02 18:51:44 发布

Jacob-wj

最新推荐文章于 2021-06-02 18:51:44 发布

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本文介绍如何在Android应用中使用DatePicker和TimePicker对话框设置日期和时间，并通过代码更新显示。

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package app.test;

import android.app.Activity;
import android.os.Bundle;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TimePicker;
import android.widget.TextView;
import java.text.DateFormat;
import java.util.Calendar;

public class Test extends Activity {
  DateFormat fmtDateAndTime=DateFormat.getDateTimeInstance();
  TextView dateAndTimeLabel;
  Calendar dateAndTime=Calendar.getInstance();
  DatePickerDialog.OnDateSetListener d=new DatePickerDialog.OnDateSetListener() {
    public void onDateSet(DatePicker view, int year, int monthOfYear,
                int dayOfMonth) {
      dateAndTime.set(Calendar.YEAR, year);
      dateAndTime.set(Calendar.MONTH, monthOfYear);
      dateAndTime.set(Calendar.DAY_OF_MONTH, dayOfMonth);
      updateLabel();
    }
  };
  TimePickerDialog.OnTimeSetListener t=new TimePickerDialog.OnTimeSetListener() {
    public void onTimeSet(TimePicker view, int hourOfDay,
                          int minute) {
      dateAndTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
      dateAndTime.set(Calendar.MINUTE, minute);
      updateLabel();
    }
  };

  @Override
  public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.main);

    Button btn=(Button)findViewById(R.id.dateBtn);

    btn.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        new DatePickerDialog(Test.this,
            d,
            dateAndTime.get(Calendar.YEAR),
            dateAndTime.get(Calendar.MONTH),
            dateAndTime.get(Calendar.DAY_OF_MONTH)).show();
      }
    });

    btn=(Button)findViewById(R.id.timeBtn);

    btn.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        new TimePickerDialog(Test.this,
                    t,
                    dateAndTime.get(Calendar.HOUR_OF_DAY),
                    dateAndTime.get(Calendar.MINUTE),
                    true).show();
      }
    });

    dateAndTimeLabel=(TextView)findViewById(R.id.dateAndTime);

    updateLabel();
  }

  private void updateLabel() {
    dateAndTimeLabel.setText(fmtDateAndTime.format(dateAndTime.getTime()));
  }
}

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  >
  <TextView android:id="@+id/dateAndTime"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    />
  <Button android:id="@+id/dateBtn"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Set the Date"
    />
  <Button android:id="@+id/timeBtn"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Set the Time"
    />
</LinearLayout>