Android日期选择器，年月日判断处理。

MainActivity.java

  

   

    

     

    
    

     

      package com.yechaoa.datepickerdemo;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import android.app.AlertDialog;
     
    
   

    

     

    
    

     

      import android.content.DialogInterface;
     
    
   

    

     

    
    

     

      import android.os.Bundle;
     
    
   

    

     

    
    

     

      import android.support.v7.app.AppCompatActivity;
     
    
   

    

     

    
    

     

      import android.util.Log;
     
    
   

    

     

    
    

     

      import android.view.View;
     
    
   

    

     

    
    

     

      import android.widget.NumberPicker;
     
    
   

    

     

    
    

     

      import android.widget.TextView;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import java.util.Calendar;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class MainActivity extends AppCompatActivity {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    private TextView tvDate;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    private View mView;
     
    
   

    

     

    
    

     
    private NumberPicker np1, np2, np3;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    private int maxDay;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    protected void onCreate(Bundle savedInstanceState) {
     
    
   

    

     

    
    

     
        super.onCreate(savedInstanceState);
     
    
   

    

     

    
    

     

              setContentView(R.layout.activity_main);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

              tvDate = (TextView) findViewById(R.id.tv_date);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

              tvDate.setOnClickListener(new View.OnClickListener() {
     
    
   

    

     

    
    

     
            @Override
     
    
   

    

     

    
    

     
            public void onClick(View v) {
     
    
   

    

     

    
    

     

                      showDateDialog();
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              });
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public void showDateDialog() {
     
    
   

    

     

    
    

     

              mView = View.inflate(this, R.layout.date_dialog, null);
     
    
   

    

     

    
    

     

              np1 = (NumberPicker) mView.findViewById(R.id.np1);
     
    
   

    

     

    
    

     

              np2 = (NumberPicker) mView.findViewById(R.id.np2);
     
    
   

    

     

    
    

     

              np3 = (NumberPicker) mView.findViewById(R.id.np3);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //获取当前日期
     
    
   

    

     

    
    

     
        Calendar c = Calendar.getInstance();
     
    
   

    

     

    
    

     
        final int year =  c.get(Calendar.YEAR);
     
    
   

    

     

    
    

     
        final int month = c.get(Calendar.MONTH)+1;//月份是从0开始算的
     
    
   

    

     

    
    

     
        final int day = c.get(Calendar.DAY_OF_MONTH);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //设置年份
     
    
   

    

     

    
    

     

              np1.setMaxValue(2999);
     
    
   

    

     

    
    

     

              np1.setValue(year); //中间参数 设置默认值
     
    
   

    

     

    
    

     

              np1.setMinValue(1900);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //设置月份
     
    
   

    

     

    
    

     

              np2.setMaxValue(12);
     
    
   

    

     

    
    

     

              np2.setValue(month);
     
    
   

    

     

    
    

     

              np2.setMinValue(1);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //设置天数
     
    
   

    

     

    
    

     

              np3.setMaxValue(31);
     
    
   

    

     

    
    

     

              np3.setValue(day);
     
    
   

    

     

    
    

     

              np3.setMinValue(1);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //年份滑动监听
     
    
   

    

     

    
    

     

              np1.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
     
    
   

    

     

    
    

     
            @Override
     
    
   

    

     

    
    

     
            public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
     
    
   

    

     

    
    

     

                      Log.i("NumberPicker","oldVal-----"+oldVal+"-----newVal-----"+newVal);
     
    
   

    

     

    
    

     
                //平年闰年判断
     
    
   

    

     

    
    

     
                if(newVal%4==0){
     
    
   

    

     

    
    

     

                          maxDay=29;
     
    
   

    

     

    
    

     

                      }else {
     
    
   

    

     

    
    

     

                          maxDay = 28;
     
    
   

    

     

    
    

     

                      }
     
    
   

    

     

    
    

     
                //设置天数的最大值
     
    
   

    

     

    
    

     

                      np3.setMaxValue(maxDay);
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              });
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        //月份滑动监听
     
    
   

    

     

    
    

     

              np2.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
     
    
   

    

     

    
    

     
            @Override
     
    
   

    

     

    
    

     
            public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
     
    
   

    

     

    
    

     

                      Log.i("NumberPicker","oldVal-----"+oldVal+"-----newVal-----"+newVal);
     
    
   

    

     

    
    

     
                //月份判断
     
    
   

    

     

    
    

     
                switch (newVal){
     
    
   

    

     

    
    

     
                    case 2:
     
    
   

    

     

    
    

     
                        if(np1.getValue()%4==0){
     
    
   

    

     

    
    

     

                                  maxDay=29;
     
    
   

    

     

    
    

     

                              }else{
     
    
   

    

     

    
    

     

                                  maxDay=28;
     
    
   

    

     

    
    

     

                              }
     
    
   

    

     

    
    

     
                        break;
     
    
   

    

     

    
    

     
                    case 1:
     
    
   

    

     

    
    

     
                    case 3:
     
    
   

    

     

    
    

     
                    case 5:
     
    
   

    

     

    
    

     
                    case 7:
     
    
   

    

     

    
    

     
                    case 8:
     
    
   

    

     

    
    

     
                    case 10:
     
    
   

    

     

    
    

     
                    case 12:
     
    
   

    

     

    
    

     

                              maxDay=31;
     
    
   

    

     

    
    

     
                        break;
     
    
   

    

     

    
    

     
                    default:
     
    
   

    

     

    
    

     

                              maxDay=30;
     
    
   

    

     

    
    

     
                        break;
     
    
   

    

     

    
    

     

                      }
     
    
   

    

     

    
    

     
                //设置天数的最大值
     
    
   

    

     

    
    

     

                      np3.setMaxValue(maxDay);
     
    
   

    

     

    
    

     

                  }
     
    
   

    

     

    
    

     

              });
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
        new AlertDialog.Builder(MainActivity.this).setTitle("请选择时间")
     
    
   

    

     

    
    

     

                      .setView(mView)
     
    
   

    

     

    
    

     

                      .setPositiveButton("确定", new DialogInterface.OnClickListener() {
     
    
   

    

     

    
    

     
                    @Override
     
    
   

    

     

    
    

     
                    public void onClick(DialogInterface dialog, int which) {
     
    
   

    

     

    
    

     
                        int years = np1.getValue();
     
    
   

    

     

    
    

     
                        int months = np2.getValue();
     
    
   

    

     

    
    

     
                        int days = np3.getValue();
     
    
   

    

     

    
    

     

                              tvDate.setText(years + "年" + months + "月" + days + "日");
     
    
   

    

     

    
    

     

                              dialog.dismiss();
     
    
   

    

     

    
    

     

                          }
     
    
   

    

     

    
    

     

                      })
     
    
   

    

     

    
    

     

                      .setNegativeButton("取消", new DialogInterface.OnClickListener() {
     
    
   

    

     

    
    

     
                    @Override
     
    
   

    

     

    
    

     
                    public void onClick(DialogInterface dialog, int which) {
     
    
   

    

     

    
    

     

                              dialog.dismiss();
     
    
   

    

     

    
    

     

                          }
     
    
   

    

     

    
    

     

                      })
     
    
   

    

     

    
    

     

                      .show();
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     

      }
     
    
  
 

github：https://github.com/yechaoa/DatePickerDemo

文章来源: blog.csdn.net，作者：yechaoa，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/yechaoa/article/details/70211193