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"/>

<DatePicker

android:id="@+id/datepicker"

android:layout_width="271dp"

android:layout_height="196dp"

android:background="#778899"/>

</RelativeLayout>

activity_main_jm