日历，时钟，计时器

package com.example.mybaseuii;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;

import android.os.Bundle;

import android.os.SystemClock;

import android.widget.Chronometer;

import android.widget.DatePicker;

import android.widget.TimePicker;

import android.widget.Toast;

import java.util.Calendar;

public class MainActivity extends Activity {

int year,month,day;

DatePicker datePicker = null;

TimePicker timePicker = null;

Chronometer chronometer = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

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

Calendar calendar = Calendar.getInstance();

year = calendar.get(Calendar.YEAR);

month = calendar.get(Calendar.MONTH);

day = calendar.get(Calendar.DAY_OF_MONTH);

//初始化日期选择器

datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {

@Override

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

MainActivity.this.year=year;

MainActivity.this.month=day;

MainActivity.this.day=day;

show(year,month,day);

}

});

//时钟

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

timePicker.setIs24HourView(true);//设置成24小时的

timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {

@Override

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

String string = hourOfDay + "时" + minute + "分";

Toast.makeText(MainActivity.this,string,

Toast.LENGTH_SHORT).show();

}

});

//计时器

chronometer = (Chronometer) findViewById(R.id.chronometer);

//设置起始时间,获取系统时间

chronometer.setBase(SystemClock.elapsedRealtime());

chronometer.setFormat("%s");//字符串模式

chronometer.start();

chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {

@Override

public void onChronometerTick(Chronometer chronometer) {

if(SystemClock.elapsedRealtime()- chronometer.getBase()>=60000){

chronometer.stop();

}

}

});

}

private void show(int year,int month,int day){

String str = year+"年"+(month+1)+"月"+day+"日";

Toast.makeText(MainActivity.this,str,

Toast.LENGTH_SHORT).show();

}

}

调用方式

package com.example.mybaseuii;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;

import android.os.Bundle;

import android.os.SystemClock;

import android.widget.Chronometer;

import android.widget.DatePicker;

import android.widget.TimePicker;

import android.widget.Toast;

import java.util.Calendar;

public class MainActivity extends Activity {

int year,month,day;

DatePicker datePicker = null;

TimePicker timePicker = null;

Chronometer chronometer = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

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

Calendar calendar = Calendar.getInstance();

year = calendar.get(Calendar.YEAR);

month = calendar.get(Calendar.MONTH);

day = calendar.get(Calendar.DAY_OF_MONTH);

//初始化日期选择器

datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {

@Override

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

MainActivity.this.year=year;

MainActivity.this.month=day;

MainActivity.this.day=day;

show(year,month,day);

}

});

//时钟

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

timePicker.setIs24HourView(true);//设置成24小时的

timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {

@Override

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

String string = hourOfDay + "时" + minute + "分";

Toast.makeText(MainActivity.this,string,

Toast.LENGTH_SHORT).show();

}

});

//计时器

chronometer = (Chronometer) findViewById(R.id.chronometer);

//设置起始时间,获取系统时间

chronometer.setBase(SystemClock.elapsedRealtime());

chronometer.setFormat("%s");//字符串模式

chronometer.start();

chronometer.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {

@Override

public void onChronometerTick(Chronometer chronometer) {

if(SystemClock.elapsedRealtime()- chronometer.getBase()>=60000){

chronometer.stop();

}

}

});

}

private void show(int year,int month,int day){

String str = year+"年"+(month+1)+"月"+day+"日";

Toast.makeText(MainActivity.this,str,

Toast.LENGTH_SHORT).show();

}

}

呈现界面

标签：控件,int,month,chronometer,UI,year,import,Android,day

来源： https://www.cnblogs.com/zsben991126/p/12231988.html