User Interface 之Picker

一. TimePicker

1.创建TimePickerFragment

package com.panjn.userinterface;

import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.widget.TimePicker;
import android.widget.Toast;

import java.text.DateFormat;
import java.util.Calendar;

/**
 * Created by panjianning on 2016/7/6.
 */
public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener {

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker
        final Calendar calendar = Calendar.getInstance();
        int hour = calendar.get(Calendar.HOUR_OF_DAY);
        int min = calendar.get(Calendar.MINUTE);
        /**
         * Params
         *   context	the parent context
         *   listener	the listener to call when the time is set
         *   hourOfDay	the initial hour
         *   minute	    the initial minute
         * is24HourView	whether this is a 24 hour view or AM/PM
         */
        return new TimePickerDialog(getActivity(), this, hour, min, true);

    }

    @Override
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user
    }
}

　　2.显示TimePickerFragment

public void showTimePickerDialog(View v) {
    DialogFragment newFragment = new TimePickerFragment();
    newFragment.show(getSupportFragmentManager(), "timePicker");
}

二. DatePicker

1.创建DatePickerFragement

public static class DatePickerFragment extends DialogFragment
                            implements DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        // Create a new instance of DatePickerDialog and return it
        return new DatePickerDialog(getActivity(), this, year, month, day);
    }

    public void onDateSet(DatePicker view, int year, int month, int day) {
        // Do something with the date chosen by the user
    }
}

　　2.显示DatePickerFragment

public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getSupportFragmentManager(), "datePicker");
}