DatePickerDialog的简单使用

来源：互联网发布：kafka java开发编辑：程序博客网时间：2024/04/30 14:25

好吧，这个工具大家应该都已经很熟悉了，我只是为了让自己理解的更简单一点以下是源码及注释：

package com.example.mydatepickerdemo;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.DatePicker;import android.widget.EditText;import android.widget.TextView;public class MainActivity extends Activity implements OnClickListener {private TextView tv_showTime;private int year;private int month;private int day;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv_showTime = (TextView) findViewById(R.id.tv_showTime);//获取用于显示时间的TextView组件Calendar calendar = Calendar.getInstance();//获取系统日历，并将其值附给我们定义的变量year = calendar.get(Calendar.YEAR);month = calendar.get(Calendar.MONTH)+1;day = calendar.get(Calendar.DAY_OF_MONTH);upDate();//调用upDate更新TextView中显示的时间tv_showTime.setOnClickListener(this);//给TextView设置一个点击事件}private void upDate(){//将变量拼接并将其存放到showTime中StringBuffer sb = new StringBuffer();tv_showTime.setText(sb.append(year).append("-").append(month).append("-").append(day));}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic void onClick(View view) {//重写点击事件// TODO Auto-generated method stub//实例化一个DatePickerDialognew DatePickerDialog(MainActivity.this,new OnDateSetListener() {//匿名内部类实现OnDateSetListener，用于选择时间的接口@Overridepublic void onDateSet(DatePicker datePicker, int dateYear, int dateMonth, int dayOfMonth) {// TODO Auto-generated method stubyear=dateYear;month=dateMonth+1;day=dayOfMonth;upDate();//将选择后的数据更新到showTime中}},year,month,day).show();//显示DatePickerDialog}}

0 0