Android中DatePicker與TimePicker用法講解（包括DatePickerDialog與TimePickerDialog）

標籤：

實現效果：將DatePicker和TimePicker修改的日期和時間即時顯示在程式標題列上。

1.通過DatePicker和TimePicker來實現

布局為main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <DatePicker        android:id="@+id/datePicker"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <TimePicker        android:id="@+id/timePicker"        android:layout_width="match_parent"        android:layout_height="wrap_content" /></LinearLayout>

MainActivity.java

import java.util.Calendar;import android.support.v7.app.ActionBarActivity;import android.app.DatePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.app.TimePickerDialog;import android.app.TimePickerDialog.OnTimeSetListener;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.DatePicker;import android.widget.DatePicker.OnDateChangedListener;import android.widget.TimePicker;import android.widget.TimePicker.OnTimeChangedListener;public class MainActivity extends ActionBarActivity {    private TimePicker timePicker;    private DatePicker datePicker;    private Calendar cal;    private int year, month, day;    private int hour, minute;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                //擷取日曆的一個對象        cal = Calendar.getInstance();                //擷取年月日時分秒的資訊        year = cal.get(Calendar.YEAR);        //month從0開始計算(一月month = 0)        month = cal.get(Calendar.MONTH)+1;        day = cal.get(Calendar.DAY_OF_MONTH);        hour = cal.get(Calendar.HOUR_OF_DAY);        minute = cal.get(Calendar.MINUTE);                //設定標題        setTitle(year+"-"+month+"-"+day+" "+hour+":"+minute);                datePicker = (DatePicker) findViewById(R.id.datePicker);        timePicker = (TimePicker) findViewById(R.id.timePicker);                //datePicker的初始化        datePicker.init(year,  cal.get(Calendar.MONTH), day, new OnDateChangedListener() {            @Override            public void onDateChanged(DatePicker view, int year, int monthOfYear,int dayOfMonth) {                //monthOfYear從0計算                setTitle(year+"-"+(monthOfYear+1)+"-"+dayOfMonth);            }        });                timePicker.setOnTimeChangedListener(new OnTimeChangedListener() {            @Override            public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {                setTitle(hourOfDay+":"+minute);            }        });
　　}
}

首先建立Calendar對象來擷取當前的系統時間和日期，然後設定在程式標題列上，注意cal.get(Calendar.MONTH)返回的值從0開始，即返回0時代表一月。

DatePicker初始化調用public void init(int year, int monthOfYear, int dayOfMonth, OnDateChangedListener onDateChangedListener),最後一個參數為DatePicker的監聽器。TimePicker直接設定監聽器。

運行 

更改DatePicker

更改TimePicker

2.使用Dialog,更加美觀

布局為main.xml

 

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" ></LinearLayout>

 

沒有加入任何控制項

 

MainActivity.java

import java.util.Calendar;import android.support.v7.app.ActionBarActivity;import android.app.DatePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.app.TimePickerDialog;import android.app.TimePickerDialog.OnTimeSetListener;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.DatePicker;import android.widget.DatePicker.OnDateChangedListener;import android.widget.TimePicker;import android.widget.TimePicker.OnTimeChangedListener;public class MainActivity extends ActionBarActivity {private Calendar cal;    private int year, month, day;    private int hour, minute;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                //擷取日曆的一個對象        cal = Calendar.getInstance();                //擷取年月日時分秒的資訊        year = cal.get(Calendar.YEAR);        //month從0開始計算(一月month = 0)        month = cal.get(Calendar.MONTH)+1;        day = cal.get(Calendar.DAY_OF_MONTH);        hour = cal.get(Calendar.HOUR_OF_DAY);        minute = cal.get(Calendar.MINUTE);                //設定標題        setTitle(year+"-"+month+"-"+day+" "+hour+":"+minute);        //日曆選取器的對話方塊形式        new DatePickerDialog(this, new OnDateSetListener() {            @Override            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {                setTitle(year+"-"+(monthOfYear+1)+"-"+dayOfMonth);            }        },year, cal.get(Calendar.MONTH), day).show();                 //時間選取器的對話方塊形式(最後一個參數is24HourView，是否為24小時制)        new TimePickerDialog(this, new OnTimeSetListener() {            @Override            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {                setTitle(hourOfDay+":"+minute);            }        }, hour, minute, true).show();    }    }

使用匿名類的方式，直接建立DatePickerDialog和TimePickerDialog對象，構造方法如下

public DatePickerDialog(Context context, OnDateSetListener callBack, int year, int monthOfYear, int dayOfMonth)

public TimePickerDialog(Context context, OnTimeSetListener callBack, int hourOfDay, int minute, boolean is24HourView)

直接在構造方法中使用匿名內部類的方法添加監聽器，is24HourView是個boolean類型的值，來表示是否使用24小時制。

 

運行

總結：

注意使用cal.get(Calendar.MONTH)得到的值會比真實的月份值小1，在setTitle時需要加1，而在傳入到DatePicker的初始化方法和DatePickerDialog的構造方法時應該直接傳入。

建議在這兩個方法內直接寫cal.get(Calendar.MONTH)，不要用自訂變數month。

 

Android中DatePicker與TimePicker用法講解（包括DatePickerDialog與TimePickerDialog）