Android新手——DatePicker和TimePicker

来源：互联网发布：算法第四版英文版pdf 编辑：程序博客网时间：2024/06/14 08:06

1. xml中的代码：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="${relativePackage}.${activityClass}" >        <LinearLayout         android:id="@+id/linear_time"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_margin="10dp"        android:orientation="horizontal">                <ImageView             android:id="@+id/iv_time"            android:layout_width="45dp"            android:layout_height="45dp"            android:src="@drawable/icon_time"/>                <Button             android:id="@+id/btn_time_picker"            android:layout_width="match_parent"            android:layout_height="45dp"            android:background="#f3f3f3"            android:layout_marginLeft="5dp"            android:text="时间"            android:textColor="#ffffff"/>            </LinearLayout>    <LinearLayout         android:id="@+id/linear_date"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_margin="10dp"        android:orientation="horizontal">                <ImageView             android:id="@+id/iv_date"            android:layout_width="45dp"            android:layout_height="45dp"            android:src="@drawable/icon_date"/>                <Button             android:id="@+id/btn_date_picker"            android:layout_width="match_parent"            android:layout_height="45dp"            android:background="#f3f3f3"            android:layout_marginLeft="5dp"            android:text="日期"            android:textColor="#ffffff"/>            </LinearLayout></LinearLayout>

2. java中的代码：

package com.zq.test;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.Dialog;import android.app.TimePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.app.TimePickerDialog.OnTimeSetListener;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.TimePicker;public class DatePickerAndTimePickerActivity extends Activity {    private Button btnTimePicker;    private Button btnDatePicker;        private int time_hour, time_minute;    private int date_year, date_month, date_day;        private OnTimeSetListener onTimeSetListener = new OnTimeSetListener() {                @Override        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {            time_hour = hourOfDay;            time_minute = minute;                        updateTimeDisplay();        }            };    private OnDateSetListener onDateSetListener = new OnDateSetListener() {                @Override        public void onDateSet(DatePicker view, int year, int monthOfYear,                int dayOfMonth) {            date_year = year;            date_month = monthOfYear;            date_day = dayOfMonth;                        updateDateDisplay();        }            };        static final int TIME_DIALOG_ID = 0;    static final int DATE_DIALOG_ID = 1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_date_picker_and_time_picker);                btnTimePicker = (Button)findViewById(R.id.btn_time_picker);        btnTimePicker.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                showDialog(TIME_DIALOG_ID);            }                    });                btnDatePicker = (Button)findViewById(R.id.btn_date_picker);        btnDatePicker.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                showDialog(DATE_DIALOG_ID);            }                    });                final Calendar calendar = Calendar.getInstance();                time_hour = calendar.get(Calendar.HOUR_OF_DAY);        time_minute = calendar.get(Calendar.MINUTE);                date_year = calendar.get(Calendar.YEAR);        date_month = calendar.get(Calendar.MONTH);        date_day = calendar.get(Calendar.DAY_OF_MONTH);                updateTimeDisplay();        updateDateDisplay();    }        private void updateTimeDisplay() {        btnTimePicker.setText(new StringBuilder().                append(pad(time_hour)).                append(":").                append(pad(time_minute)));    }        private void updateDateDisplay() {        btnDatePicker.setText(new StringBuilder().                append(date_year).                append("-").                append(date_month + 1).                append("-").                append(date_day));    }        private static String pad(int index) {        if(index >= 10)            return String.valueOf(index);        else             return "0" + String.valueOf(index);    }        protected Dialog onCreateDialog(int id) {        switch(id) {        case TIME_DIALOG_ID :            return new TimePickerDialog(this, onTimeSetListener, time_hour, time_minute, true);        case DATE_DIALOG_ID :            return new DatePickerDialog(this, onDateSetListener, date_year, date_month, date_day);        }                return null;

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