DatePicker、TimePicker基本用法

前言

在时间和日期开发中，TimePicker和DatePicker经常使用到，这俩个控件是嵌入到View中的，如果想使用弹窗式的，可是使用TimePickerDialog和DataPickerDialog。这次我主要是实现了一个带确定和取消按钮的时间选择器，为的是以后可以直接使用，不用再多写代码了。

布局

layout_timepicker.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <TextView         android:id="@+id/tv_title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:textSize="16sp"        />    <TimePicker         android:id="@+id/timepicker"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@+id/tv_title"        android:layout_centerHorizontal="true"        /></RelativeLayout>

layout_datepicker.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content" >    <TextView         android:id="@+id/tv_title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="请选择日期"        android:textSize="16sp"        android:layout_alignParentTop="true"        />    <DatePicker         android:id="@+id/datepicker"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:calendarViewShown="false"        android:layout_below="@+id/tv_title"        android:layout_centerHorizontal="true"        /></RelativeLayout>

Factory

TimeFactory:

Builder mDialog;    TimePicker mTimePicker;    TextView  tv_title;    TimeFactoryListener listener;    int mHour;    int mMinute;    static TimeFactory mTimeFactory;    public static TimeFactory initFactory()    {        if(mTimeFactory == null)        {            mTimeFactory = new TimeFactory();        }        return mTimeFactory;    }    public void setFactoryListener(TimeFactoryListener listener)    {        this.listener = listener;    }    public Builder createTimePickerDialog(Context context)    {        View view = LayoutInflater.from(context).inflate(R.layout.layout_timepicker, null);        tv_title = (TextView) view.findViewById(R.id.tv_title);        mTimePicker = (TimePicker) view.findViewById(R.id.timepicker);        mDialog = new Builder(context);        mDialog.setView(view);        mTimePicker.setIs24HourView(true);        mHour = mTimePicker.getCurrentHour();        mMinute = mTimePicker.getCurrentMinute();        tv_title.setText(mHour+":"+mMinute);        mDialog.setPositiveButton("确定", onClickListener);        mDialog.setNegativeButton("取消", onClickListener);        mTimePicker.setOnTimeChangedListener(onTimeChangedListener);        return mDialog;    }    final OnTimeChangedListener onTimeChangedListener = new OnTimeChangedListener()    {        @Override        public void onTimeChanged(TimePicker view, int hour, int minute)        {            tv_title.setText(hour+":"+minute);            mHour = hour;            mMinute = minute;        }    };    final OnClickListener onClickListener = new OnClickListener()    {        @Override        public void onClick(DialogInterface dialog, int which)        {            switch (which)            {                // 确定                case -1:                    listener.setTime(mHour, mMinute);                    break;                // 取消                case -2:                    listener.cancel();                    break;                // 忽略                case -3:                    break;                default:                    break;            }        }    };    public interface TimeFactoryListener    {        public void setTime(int hour,int minute);        public void cancel();    }

DateFactory:

Builder mDialog;    TimePicker mTimePicker;    TextView  tv_title;    TimeFactoryListener listener;    int mHour;    int mMinute;    static TimeFactory mTimeFactory;    public static TimeFactory initFactory()    {        if(mTimeFactory == null)        {            mTimeFactory = new TimeFactory();        }        return mTimeFactory;    }    public void setFactoryListener(TimeFactoryListener listener)    {        this.listener = listener;    }    public Builder createTimePickerDialog(Context context)    {        View view = LayoutInflater.from(context).inflate(R.layout.layout_timepicker, null);        tv_title = (TextView) view.findViewById(R.id.tv_title);        mTimePicker = (TimePicker) view.findViewById(R.id.timepicker);        mDialog = new Builder(context);        mDialog.setView(view);        mTimePicker.setIs24HourView(true);        mHour = mTimePicker.getCurrentHour();        mMinute = mTimePicker.getCurrentMinute();        tv_title.setText(mHour+":"+mMinute);        mDialog.setPositiveButton("确定", onClickListener);        mDialog.setNegativeButton("取消", onClickListener);        mTimePicker.setOnTimeChangedListener(onTimeChangedListener);        return mDialog;    }    final OnTimeChangedListener onTimeChangedListener = new OnTimeChangedListener()    {        @Override        public void onTimeChanged(TimePicker view, int hour, int minute)        {            tv_title.setText(hour+":"+minute);            mHour = hour;            mMinute = minute;        }    };    final OnClickListener onClickListener = new OnClickListener()    {        @Override        public void onClick(DialogInterface dialog, int which)        {            switch (which)            {                // 确定                case -1:                    listener.setTime(mHour, mMinute);                    break;                // 取消                case -2:                    listener.cancel();                    break;                // 忽略                case -3:                    break;                default:                    break;            }        }    };    public interface TimeFactoryListener    {        public void setTime(int hour,int minute);        public void cancel();    }

主要的实现方法就是，在initFactory中实例化工厂，通过createDialog方法创建带时间选择器的窗口，在点击窗口按钮的时间回调主界面的方法，以达到数据交互的目的。

使用方法

MainActivity:

DateFactory factory = DateFactory.initFactory();                factory.setFactoryListener(new DateFactoryListener()                {                    @Override                    public void setDate(int year, int monthOfYear, int dayOfMonth)                    {                        tv_date.setText(year + "-" + (monthOfYear+1) + "-" + dayOfMonth);                    }                    @Override                    public void cancel()                    {                    }                });                factory.createDatePickerDialog(MainActivity.this).show();

TimeFactory factory = TimeFactory.initFactory();                factory.setFactoryListener(new TimeFactoryListener()                {                    @Override                    public void setTime(int hour, int minute)                    {                        tv_date.setText(hour + ":" + minute);                    }                    @Override                    public void cancel()                    {                    }                });                factory.createTimePickerDialog(MainActivity.this).show();

虽然代码看上去比直接使用多了不少，但是以后就可以直接使用Factory类来操作时间了，以后的开发过程省去了不少时间。