TimePickerDialog、TimePicker、DatePickerDialog、DatePicker用法

　　四個類中不帶Dialog的都是對應的控件，帶Dialog是相應的彈出的對話框，好比完成設置鬧鐘或者選擇生日等應用中會用到。下面以TimePickerDialog爲例介紹2中設置時間的方法：

一、谷歌sdk文檔piker中介紹的一種方法：

　　<1>構建本身的Dilog類：　　　　

package com.example.user.spinnertest2;

import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.text.format.DateFormat;
import android.widget.TimePicker;

import java.util.Calendar;

/**
 * Created by user on 2016/10/12.
 */
//千萬別導錯了包
public  class TimePickerFragment extends DialogFragment
        implements TimePickerDialog.OnTimeSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker
        final Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR_OF_DAY);
        int minute = c.get(Calendar.MINUTE);

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), this, hour, minute,
                DateFormat.is24HourFormat(getActivity()));
    }
    @Override//執行選擇時間後的操做
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user

        System.out.println("成功"+hourOfDay+"haha"+minute);
    }

}

　　須要注意繼承導入的包必須是import android.support.v4.app.DialogFragment;以前導入錯誤致使後面的主函數

timePickerFragment.show(getSupportFragmentManager(), "af")顯示dialog時候老是出錯，這主要是要兼容3.0前的設置

/要修改相應的activity繼承android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {// AppCompatActivity

    private TimePickerFragment timePickerFragment;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        timePickerFragment = new TimePickerFragment();
        //顯示dialog
        timePickerFragment.show(getSupportFragmentManager(), "af");
        
    }

    }

　　這裏須要注意的是：修改顯示dialog的activity繼承android.support.v4.app.FragmentActivity;

二、直接建立dialog

 

        TimePickerDialog timePickerDialog =new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener(){

            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                System.out.println("成功"+hourOfDay+"haha"+minute);
            }
        },  6, 60 ,
        true); //構造設置的時間爲默認的時間
        timePickerDialog.show();