Android初學第76天

標籤：ini   date   res   final   argument   create   over   mina   state   

Android初學第76天

16_CameraIntent

代碼CriminalintentDatePickerFragment.java

package com.bignerdranch.android.criminalintent;import android.app.Activity;import android.app.Dialog;import android.content.DialogInterface;import android.content.Intent;import android.os.Bundle;import android.support.v4.app.DialogFragment;import android.support.v7.app.AlertDialog;import android.view.LayoutInflater;import android.view.View;import android.widget.DatePicker;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;public class DatePickerFragment extends DialogFragment {    public static final String EXTRA_DATE =            "com.bignerdranch.android.criminalintent.date";    private static final String ARG_DATE = "date";    private DatePicker mDatePicker;    public static DatePickerFragment newInstance(Date date) {        Bundle args = new Bundle();        args.putSerializable(ARG_DATE, date);        DatePickerFragment fragment = new DatePickerFragment();        fragment.setArguments(args);        return fragment;    }    @Override    public Dialog onCreateDialog(Bundle savedInstanceState) {        Date date = (Date) getArguments().getSerializable(ARG_DATE);        Calendar calendar = Calendar.getInstance();        calendar.setTime(date);        int year = calendar.get(Calendar.YEAR);        int month = calendar.get(Calendar.MONTH);        int day = calendar.get(Calendar.DAY_OF_MONTH);        View v = LayoutInflater.from(getActivity())                .inflate(R.layout.dialog_date, null);        mDatePicker = (DatePicker) v.findViewById(R.id.dialog_date_picker);        mDatePicker.init(year, month, day, null);        return new AlertDialog.Builder(getActivity())                .setView(v)                .setTitle(R.string.date_picker_title)                .setPositiveButton(android.R.string.ok,                        new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                int year = mDatePicker.getYear();                                int month = mDatePicker.getMonth();                                int day = mDatePicker.getDayOfMonth();                                Date date = new GregorianCalendar(year, month, day).getTime();                                sendResult(Activity.RESULT_OK, date);                            }                        })                .create();    }    private void sendResult(int resultCode, Date date) {        if (getTargetFragment() == null) {            return;        }        Intent intent = new Intent();        intent.putExtra(EXTRA_DATE, date);        getTargetFragment()                .onActivityResult(getTargetRequestCode(), resultCode, intent);    }}

Android初學第76天