Android开发之DatePickerDialog

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创建DatePickerDialog的步骤？

1.声明一个监听器，使用匿名内部类。

2.复写onCreateDialog()方法。

3.在需要的时候调用showDialog方法。

MainActivity.java:

package com.mycompany.datepicker;import android.app.DatePickerDialog;import android.app.Dialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.DatePicker;public class MainActivity extends AppCompatActivity {    private Button showDatePicker;    private static final int DATE_PICKER_ID = 1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        showDatePicker = (Button) findViewById(R.id.showDatePicker);        showDatePicker.setOnClickListener(new ButtonListener());    }    private class ButtonListener implements View.OnClickListener{        @Override        public void onClick(View v) {            //  此方法用于显示DatePickerDialog            showDialog(DATE_PICKER_ID);        }    }    DatePickerDialog.OnDateSetListener onDateSetListener            = new DatePickerDialog.OnDateSetListener() {        @Override        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {            int month = monthOfYear + 1;            System.out.println(year + "-" + month  + "-" + dayOfMonth);        }    };    @Override    protected Dialog onCreateDialog(int id) {        switch (id){            case DATE_PICKER_ID:                return new DatePickerDialog(this, onDateSetListener, 2016, 0, 1);        }        return null;    }}

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