Android 时间和日期选择按钮，并显示时间在EditText中

一，界面展示

二，界面代码

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".CreateActivity">

    <EditText
        android:id="@+id/create_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="任务标题"
        android:inputType="textPersonName"
        android:textSize="28sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:layout_marginTop="8dp"
        android:text="请输入日期"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/create_title" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:layout_marginTop="8dp"
        android:text="请输入时间"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button1" />

    <EditText
        android:id="@+id/date1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:inputType="textPersonName"
        app:layout_constraintStart_toEndOf="@+id/button1"
        app:layout_constraintTop_toBottomOf="@+id/create_title" />

    <EditText
        android:id="@+id/date2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:ems="10"
        android:inputType="textPersonName"
        app:layout_constraintStart_toEndOf="@+id/button2"
        app:layout_constraintTop_toBottomOf="@+id/date1" />

    <com.google.android.material.textfield.TextInputEditText
        android:id="@+id/create_things"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="20dp"
        android:layout_marginTop="15dp"
        android:background="@null"
        android:hint="任务内容："
        android:textIsSelectable="false"
        android:textSize="20sp"
        android:textStyle="italic"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/date2"
        app:textInputLayoutFocusedRectEnabled="false" />

    <ImageView
        android:id="@+id/create_save"
        android:layout_width="69dp"
        android:layout_height="55dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:srcCompat="@drawable/save" />

</androidx.constraintlayout.widget.ConstraintLayout>

三，CreateActivity代码(可自己命名Activity)

import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;

import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;

import java.util.Calendar;

public class CreateActivity extends AppCompatActivity {
    
    

    private Button button1,button2;
    private EditText date1,date2;
    private DatePickerDialog dateDialog;
    private TimePickerDialog timeDialog;
    private int year, monthOfYear, dayOfMonth, hourOfDay, minute;
    public void init(){
    
    
        button1=(Button)findViewById(R.id.button1);
        button2=(Button)findViewById(R.id.button2);
        date1=(EditText) findViewById(R.id.date1);
        date2=(EditText) findViewById(R.id.date2);

    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_create);
        //设置为全屏模式
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        //ActionBar显示返回按钮
        ActionBar actionBar = getSupportActionBar();
        actionBar.hide();
        init();
        // 通过Calendar对象来获取年、月、日、时、分的信息
        Calendar calendar = Calendar.getInstance();
        year = calendar.get(calendar.YEAR);
        monthOfYear = calendar.get(calendar.MONTH);
        dayOfMonth = calendar.get(calendar.DAY_OF_MONTH);
        hourOfDay = calendar.get(calendar.HOUR_OF_DAY);
        minute = calendar.get(calendar.MINUTE);
        /*
         * 实例化DatePickerDialog
         */
        dateDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
    
    

            @Override
            public void onDateSet(DatePicker arg0, int year, int monthOfYear,
                                  int dayOfMonth) {
    
    
                // 把获取的日期显示在文本框内，月份从0开始计数，所以要加1
                String text = year + "-" + (monthOfYear + 1) + "-" + dayOfMonth;
                date1.setText(text);
            }
        }, year, monthOfYear, dayOfMonth);
        /**
         * 对日期选择器按钮设置监听事件
        */
        button1.setOnClickListener(new View.OnClickListener() {
    
    

            @Override
            public void onClick(View arg0) {
    
    
                // 点击日期选择器按钮时显示出日期对话框
                dateDialog.show();
            }
        });

        /*
         * 实例化TimePickerDialog
         */
      timeDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
    
    

            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    
    
                String text;
                if(minute<10){
    
    
                    text = hourOfDay + ":0" + minute; 
                }
                else{
    
    
                    text = hourOfDay + ":0" + minute; 
                }
                date2.setText(text);
            }
        }, hourOfDay, minute, true); // 最后一个参数设置是否为24小时制

        /**
        * 对时间选择器按钮设置监听事件
        */
        button2.setOnClickListener(new View.OnClickListener() {
    
    

            @Override
            public void onClick(View arg0) {
    
    
                // 点击时间选择器按钮时显示出时间对话框
                timeDialog.show();
            }
        });

    }
}

五，运行结果图展示
①日期选择

②时间选择

③效果图