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  • Android设置日期DatePickerDialog

    设置日期DatePickerDialog

    package com.example.testview;
    
    import java.util.Calendar;
    import java.util.Date;
    import java.util.Locale;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.widget.Button;
    import android.widget.DatePicker;
    import android.widget.TextView;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.app.DatePickerDialog;
    
    /**
     * 
     * DatePickerDialog是设置日期对话框,通过OnDateSetListener监听并重新设置日期,
     * 当日期被重置后,会执行OnDateSetLintener类中的方法onDateSet()
     *
     */
    
    
    public class DatePickerDialogExample extends Activity {
        
        private TextView showdate;
        private Button setdate;
        private int year;
        private int month;
        private int day;
        
    
        @Override
        public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.datepickerdialog);
            
            showdate=(TextView) this.findViewById(R.id.showtime);
            setdate=(Button) this.findViewById(R.id.setdate);
            //初始化Calendar日历对象
            Calendar mycalendar=Calendar.getInstance();
    
            year=mycalendar.get(Calendar.YEAR); //获取Calendar对象中的年
            month=mycalendar.get(Calendar.MONTH);//获取Calendar对象中的月
            day=mycalendar.get(Calendar.DAY_OF_MONTH);//获取这个月的第几天
            showdate.setText("当前日期:"+year+"-"+(month+1)+"-"+day); //显示当前的年月日
            
            //添加单击事件--设置日期
            setdate.setOnClickListener(new OnClickListener(){
                
                @Override
                public void onClick(View v)
                {
                    /**
                     * 构造函数原型:
                     * public DatePickerDialog (Context context, DatePickerDialog.OnDateSetListener callBack, 
                     * int year, int monthOfYear, int dayOfMonth) 
                     * content组件运行Activity,
                     * DatePickerDialog.OnDateSetListener:选择日期事件
                     * year:当前组件上显示的年,monthOfYear:当前组件上显示的月,dayOfMonth:当前组件上显示的第几天
                     * 
                     */
                    //创建DatePickerDialog对象
                    DatePickerDialog dpd=new DatePickerDialog(DatePickerDialogExample.this,Datelistener,year,month,day);
                    dpd.show();//显示DatePickerDialog组件
                }
            });    
            
        }
        private DatePickerDialog.OnDateSetListener Datelistener=new DatePickerDialog.OnDateSetListener()
        {
            /**params:view:该事件关联的组件
             * params:myyear:当前选择的年
             * params:monthOfYear:当前选择的月
             * params:dayOfMonth:当前选择的日
             */
            @Override
            public void onDateSet(DatePicker view, int myyear, int monthOfYear,int dayOfMonth) {
                
                
                //修改year、month、day的变量值,以便以后单击按钮时,DatePickerDialog上显示上一次修改后的值
                year=myyear;
                month=monthOfYear;
                day=dayOfMonth;
                //更新日期
                updateDate();
                
            }
            //当DatePickerDialog关闭时,更新日期显示
            private void updateDate()
            {
                //在TextView上显示日期
                showdate.setText("当前日期:"+year+"-"+(month+1)+"-"+day);
            }
        };
        
        
    }
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  • 原文地址:https://www.cnblogs.com/guop/p/4975058.html
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