第一阶段冲刺5

package com.example.zbytexttwo;

import androidx.appcompat.app.AppCompatActivity;

import java.util.Calendar;

import android.os.Bundle;

import android.widget.DatePicker;

import android.widget.TextView;

import android.widget.TimePicker;

public class MainJmActivity extends AppCompatActivity {

    private TextView textview;

    private TimePicker timepicker;

    private DatePicker datepicker;

    /* 声明日期及时间变量*/

    private int year;

    private int month;

    private int day;

    private int hour;

    private int minute;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main_jm);

        /*获取当前日期及时间 */

        Calendar calendar = Calendar.getInstance();

        year = calendar.get(Calendar.YEAR);

        month = calendar.get(Calendar.MONTH);

        day = calendar.get(Calendar.DAY_OF_MONTH);

        hour = calendar.get(Calendar.HOUR);

        minute = calendar.get(Calendar.MINUTE);

        datepicker = (DatePicker) findViewById(R.id.datepicker);

        timepicker = (TimePicker) findViewById(R.id.timepicker);

        /* 设置TextView对象，显示初始日期时间 */

        textview = (TextView) findViewById(R.id.timeview);

        textview.setText(new StringBuilder().append(year).append("/")

                .append(format(month + 1)).append("/")

                .append(format(day)).append(" ")

                .append(format(hour)).append(":")

                .append(format(minute)));

        /* 设置OnDateChangedListener()*/

        datepicker.init(year, month, day,

                new DatePicker.OnDateChangedListener() {

                    @Override

                    public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

                        // TODO Auto-generated method stub

                        MainJmActivity.this.year = year;

                        month = monthOfYear;

                        day = dayOfMonth;

                        textview.setText(new StringBuilder().append(year).

                                append("/").append(format(month + 1))

                                .append("/").append(format(day)).append(" ")

                                .append(format(hour)).append(":")

                                .append(format(minute)));

                    }

                });

        timepicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {

            @Override

            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {

                // TODO Auto-generated method stub

                hour = hourOfDay;

                MainJmActivity.this.minute = minute;

                textview.setText(new StringBuilder().append(year)

                        .append("/").append(format(month + 1))

                        .append("/").append(format(day)).append(" ")

                        .append(format(hour)).append(":")

                        .append(format(minute)));

            }

        });

    }

    private String format(int time) {

        String str = "" + time;

        if (str.length() == 1)

            str = "0" + str;

        return str;

    }

}

MainJmActivity.java

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/tab01"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainJmActivity"

    android:orientation="vertical">

    <TextView

        android:id="@+id/timeview"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="DatePicker和TimePicker"/>

    <TimePicker

        android:id="@+id/timepicker"

        android:layout_width="wrap_content"

        android:layout_height="116dp"

        android:background="#778888"/>

    <!--设置背景色为墨绿-->

    <DatePicker

        android:id="@+id/datepicker"

        android:layout_width="271dp"

        android:layout_height="196dp"

        android:background="#778899"/>

</RelativeLayout>

activity_main_jm