Android入门之日历选择与时间选择组件的使用

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
 
    <TimePicker
        android:id="@+id/timePickerSpinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:timePickerMode="spinner" />
 
    <DatePicker
        android:id="@+id/datepickerCalendar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:datePickerMode="calendar" />
 
 
</LinearLayout>

package org.mk.android.demo.demodatepicker;
 
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
 
import android.os.Bundle;
import android.util.Log;
import android.widget.DatePicker;
import android.widget.TimePicker;
 
import java.util.Calendar;
 
public class MainActivity extends AppCompatActivity {
    private DatePicker dp;
    private TimePicker tp;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        dp = (DatePicker) findViewById(R.id.datepickerCalendar);
        tp=(TimePicker) findViewById(R.id.timePickerSpinner);
        dp.setOnDateChangedListener(new OnDateChanged());
        tp.setOnTimeChangedListener(new OnTimeChanged());
    }
 
    private class OnDateChanged implements DatePicker.OnDateChangedListener {
        @Override
        public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            StringBuffer selectedDateStr = new StringBuffer();
            selectedDateStr.append("您选择的日期是:").append(year).append("年").append(monthOfYear + 1).append("月").append(dayOfMonth).append("日");
            Log.i("app", selectedDateStr.toString());
        }
    }
 
    private class OnTimeChanged implements TimePicker.OnTimeChangedListener {
        @Override
        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
            StringBuffer selectedTimeStr = new StringBuffer();
            selectedTimeStr.append("您选择的时间是:").append(hourOfDay).append("时").append(minute).append("分");
            Log.i("app", selectedTimeStr.toString());
        }
    }
}