安卓——DataPicker与TimePicker显示日期和时间

朱雀 2022-05-30 03:27 287阅读 0赞

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手指点击选择一个合适的日期

或者滑动选择

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上图是初始化的日期和时间（即当前日期和时间）

接下来我要拨动按钮了。

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调了一下dataPicker

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调了一下TimePicker

注：这两个Picker我是分开在setTitle上显示的。

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对话框显示日期和时间

然后我调动一下

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日期也该了，哈哈。

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在对话框中展现的时间。

然后我调动一下哈

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时间变了呢，哈。

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最后上代码

activity\_main.xml

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.example.lenovo.datapicker_timepicker.MainActivity">
    
    
        <DatePicker
            android:id="@+id/dataPicker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
             />
    
        <TimePicker
            android:id="@+id/timePicker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
             />
    </LinearLayout>

MainActivity.java

package com.example.lenovo.datapicker_timepicker;
    
    import android.app.Activity;
    import android.app.DatePickerDialog;
    import android.app.TimePickerDialog;
    import android.os.Bundle;
    import android.widget.DatePicker;
    import android.widget.TimePicker;
    
    import java.util.Calendar;
    import java.util.TimeZone;
    
    public class MainActivity extends Activity {
    
        private DatePicker datapicker;
        private TimePicker timePicker;
        private Calendar cal;
        private int year;
        private int month;
        private int day;
        private int hour;
        private int minute;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            datapicker=(DatePicker)findViewById(R.id.dataPicker);
            timePicker=(TimePicker)findViewById(R.id.timePicker);
            //实例化一个日历实例，括号里的内容是解决差8个小时的问题
            cal=Calendar.getInstance(TimeZone.getTimeZone("GMT+8:00"));
            year=cal.get(Calendar.YEAR);
            month=cal.get(Calendar.MONTH)+1;
            day=cal.get(Calendar.DAY_OF_MONTH);
            hour=cal.get(Calendar.HOUR_OF_DAY);
            minute=cal.get(Calendar.MINUTE);
            setTitle(year+"-"+month+"-"+day+"-"+hour+":"+minute);
            //dataPicker的初始化，第四个参数为一个监听器
            datapicker.init(year, cal.get(Calendar.MONTH), day,new DatePicker.OnDateChangedListener() {
                @Override
                public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                    setTitle(year+"-"+(monthOfYear+1)+"-"+dayOfMonth);
                }
            });
    
            timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
                @Override
                public void onTimeChanged(TimePicker timePicker, int hourOfday, int minute) {
                    setTitle(hourOfday+":"+minute);
                }
            });
    
    
            //显示在对话框中的日期
            /*
            new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker datePicker,int year, int monthOfYear, int dayOfMonth) {
                    setTitle(year+"-"+(monthOfYear+1)+"-"+dayOfMonth);
                }
            },year, cal.get(Calendar.MONTH), day ).show();
            */
    
            //显示在对话框中的时间
            new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int hourOfday, int minute) {
                    setTitle(hourOfday+":"+minute);
                }
            },hour,minute,true).show();
    
        }
    }

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