【发布时间】：2013-09-03 05:44:49
【问题描述】：
如何在旋转视图中制作日期选择器。这是图像，
我希望日期选择器看起来像这样。提前致谢。
【问题讨论】：
标签： android datepicker
【发布时间】：2013-09-03 05:44:49
【问题描述】：
@Override
parentView.findViewById(R.id.changeDate).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
DialogFragment newFragment = new SelectDateFragmentTrans();
newFragment.show(getFragmentManager(), "DatePicker");
}
});
SelectDateFragmentTrans.java：
public class SelectDateFragmentTrans extends DialogFragment
implements DatePickerDialog.OnDateSetListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Calendar calendar = Calendar.getInstance();
int yy = calendar.get(Calendar.YEAR);
int mm = calendar.get(Calendar.MONTH);
int dd = calendar.get(Calendar.DAY_OF_MONTH);
return new DatePickerDialog(getActivity(), this, yy, mm, dd);
}
public void onDateSet(DatePicker view, int yy, int mm, int dd) {
populateSetDate(yy, mm+1, dd);
}
public void populateSetDate(int year, int month, int day) {
SettingsFragment.date1 = month+"/"+day+"/"+year;
TransferFragment.date.setText(month+"/"+day+"/"+year);
}
}
【讨论】：
【讨论】：
我创建了一个自定义
DatePicker，我想在 String 中显示Months，例如Jan,Feb,Mar，第二年是可选的。
所以我必须从scratch 开始。
month_year_picker.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
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="horizontal">
<NumberPicker
android:id="@+id/picker_month"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginRight="20dp"/>
<NumberPicker
android:id="@+id/picker_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginRight="20dp"/>
<NumberPicker
android:id="@+id/picker_year"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>
MonthYearPickerDialog.java
public class MonthYearPickerDialog extends DialogFragment {
private DatePickerDialog.OnDateSetListener listener;
private int daysOfMonth = 31;
private NumberPicker monthPicker;
private NumberPicker yearPicker;
private NumberPicker dayPicker;
private Calendar cal = Calendar.getInstance();
public static final String MONTH_KEY = "monthValue";
public static final String DAY_KEY = "dayValue";
public static final String YEAR_KEY = "yearValue";
int monthVal = -1 , dayVal = -1 , yearVal =-1 ;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle extras = getArguments();
if(extras != null){
monthVal = extras.getInt(MONTH_KEY , -1);
dayVal = extras.getInt(DAY_KEY , -1);
yearVal = extras.getInt(YEAR_KEY , -1);
}
}
public static MonthYearPickerDialog newInstance(int monthIndex , int daysIndex , int yearIndex) {
MonthYearPickerDialog f = new MonthYearPickerDialog();
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt(MONTH_KEY, monthIndex);
args.putInt(DAY_KEY, daysIndex);
args.putInt(YEAR_KEY, yearIndex);
f.setArguments(args);
return f;
}
public void setListener(DatePickerDialog.OnDateSetListener listener) {
this.listener = listener;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
//getDialog().setTitle("Select your Birthday Date");
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Get the layout inflater
LayoutInflater inflater = getActivity().getLayoutInflater();
View dialog = inflater.inflate(R.layout.month_year_picker, null);
monthPicker = (NumberPicker) dialog.findViewById(R.id.picker_month);
yearPicker = (NumberPicker) dialog.findViewById(R.id.picker_year);
dayPicker = (NumberPicker) dialog.findViewById(R.id.picker_day);
monthPicker.setMinValue(1);
monthPicker.setMaxValue(12);
if(monthVal != -1)// && (monthVal > 0 && monthVal < 13))
monthPicker.setValue(monthVal);
else
monthPicker.setValue(cal.get(Calendar.MONTH) + 1);
monthPicker.setDisplayedValues(new String[]{"Jan","Feb","Mar","Apr","May","June","July",
"Aug","Sep","Oct","Nov","Dec"});
dayPicker.setMinValue(1);
dayPicker.setMaxValue(daysOfMonth);
if(dayVal != -1)
dayPicker.setValue(dayVal);
else
dayPicker.setValue(cal.get(Calendar.DAY_OF_MONTH));
monthPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
switch (newVal){
case 1:case 3:case 5:
case 7:case 8:case 10:
case 12:
daysOfMonth = 31;
dayPicker.setMaxValue(daysOfMonth);
break;
case 2:
daysOfMonth = 28;
dayPicker.setMaxValue(daysOfMonth);
break;
case 4:case 6:
case 9:case 11:
daysOfMonth = 30;
dayPicker.setMaxValue(daysOfMonth);
break;
}
}
});
int maxYear = cal.get(Calendar.YEAR);//2016
final int minYear = 1997;
int arraySize = maxYear - minYear;
String[] tempArray = new String[arraySize];
tempArray[0] = "---";
int tempYear = minYear+1;
for(int i=0 ; i < arraySize; i++){
if(i != 0){
tempArray[i] = " " + tempYear + "";
}
tempYear++;
}
Log.i("", "onCreateDialog: " + tempArray.length);
yearPicker.setMinValue(minYear+1);
yearPicker.setMaxValue(maxYear);
yearPicker.setDisplayedValues(tempArray);
yearPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
try {
if(isLeapYear(picker.getValue())){
daysOfMonth = 29;
dayPicker.setMaxValue(daysOfMonth);
}
}catch (Exception e){
e.printStackTrace();
}
}
});
builder.setView(dialog)
// Add action buttons
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
int year = yearPicker.getValue();
if(year == (minYear+1)){
year = 1904;
}
listener.onDateSet(null, year, monthPicker.getValue(), dayPicker.getValue());
}
})
.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MonthYearPickerDialog.this.getDialog().cancel();
}
});
return builder.create();
}
public static boolean isLeapYear(int year) {
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
return cal.getActualMaximum(Calendar.DAY_OF_YEAR) > 365;
}
public static boolean isLeapYear2(int year) {
if (year % 4 != 0) {
return false;
} else if (year % 400 == 0) {
return true;
} else if (year % 100 == 0) {
return false;
} else {
return true;
}
}
}
然后这样称呼它
MonthYearPickerDialog pd = MonthYearPickerDialog.newInstance(5,12, 1999);
//new MonthYearPickerDialog();
pd.setListener(new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
Toast.makeText(getActivity(),"Year : " + selectedYear + " Month :" + selectedMonth + " Day:" + selectedDay,
Toast.LENGTH_LONG ).show();
}
});
pd.show(getFragmentManager(), "MonthYearPickerDialog");
编辑
找一个不错的Example here
【讨论】：
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.datepickerwithspinner.MainActivity">
<TextView
android:id="@+id/tvdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
<Button
android:id="@+id/Save"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/tvdate"
android:text="Date Picker"/>
</RelativeLayout>
datepickerdialog.java
import java.util.Calendar;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Typeface;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TableLayout.LayoutParams;
import android.widget.TextView;
import com.wheel.ArrayWheelAdapter;
import com.wheel.NumericWheelAdapter;
import com.wheel.OnWheelChangedListener;
import com.wheel.WheelView;
public class DatePickerDailog extends Dialog {
private Context Mcontex;
private int NoOfYear = 100;
public DatePickerDailog(Context context, Calendar calendar,
final DatePickerListner dtp) {
super(context);
Mcontex = context;
LinearLayout lytmain = new LinearLayout(Mcontex);
lytmain.setOrientation(LinearLayout.VERTICAL);
LinearLayout lytdate = new LinearLayout(Mcontex);
LinearLayout lytbutton = new LinearLayout(Mcontex);
Button btnset = new Button(Mcontex);
Button btncancel = new Button(Mcontex);
btnset.setText("Set");
btncancel.setText("Cancel");
final WheelView month = new WheelView(Mcontex);
final WheelView year = new WheelView(Mcontex);
final WheelView day = new WheelView(Mcontex);
lytdate.addView(day, new LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 1.2f));
lytdate.addView(month, new LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 0.8f));
lytdate.addView(year, new LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
requestWindowFeature(Window.FEATURE_NO_TITLE);
lytbutton.addView(btnset, new LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
lytbutton.addView(btncancel, new LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT, 1f));
lytbutton.setPadding(5, 5, 5, 5);
lytmain.addView(lytdate);
lytmain.addView(lytbutton);
setContentView(lytmain);
getWindow().setLayout(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT);
OnWheelChangedListener listener = new OnWheelChangedListener() {
public void onChanged(WheelView wheel, int oldValue, int newValue) {
updateDays(year, month, day);
}
};
// month
int curMonth = calendar.get(Calendar.MONTH);
String months[] = new String[] { "January", "February", "March",
"April", "May", "June", "July", "August", "September",
"October", "November", "December" };
month.setViewAdapter(new DateArrayAdapter(context, months, curMonth));
month.setCurrentItem(curMonth);
month.addChangingListener(listener);
Calendar cal = Calendar.getInstance();
// year
int curYear = calendar.get(Calendar.YEAR);
int Year = cal.get(Calendar.YEAR);
year.setViewAdapter(new DateNumericAdapter(context, Year - NoOfYear,
Year + NoOfYear, NoOfYear));
year.setCurrentItem(curYear-(Year-NoOfYear));
year.addChangingListener(listener);
// day
updateDays(year, month, day);
day.setCurrentItem(calendar.get(Calendar.DAY_OF_MONTH) - 1);
btnset.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Calendar c = updateDays(year, month, day);
dtp.OnDoneButton(DatePickerDailog.this, c);
}
});
btncancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dtp.OnCancelButton(DatePickerDailog.this);
}
});
}
Calendar updateDays(WheelView year, WheelView month, WheelView day) {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR,
calendar.get(Calendar.YEAR) + (year.getCurrentItem()-NoOfYear));
calendar.set(Calendar.MONTH, month.getCurrentItem());
int maxDays = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
day.setViewAdapter(new DateNumericAdapter(Mcontex, 1, maxDays, calendar
.get(Calendar.DAY_OF_MONTH) - 1));
int curDay = Math.min(maxDays, day.getCurrentItem() + 1);
day.setCurrentItem(curDay - 1, true);
calendar.set(Calendar.DAY_OF_MONTH, curDay);
return calendar;
}
private class DateNumericAdapter extends NumericWheelAdapter {
int currentItem;
int currentValue;
public DateNumericAdapter(Context context, int minValue, int maxValue,
int current) {
super(context, minValue, maxValue);
this.currentValue = current;
setTextSize(20);
}
@Override
protected void configureTextView(TextView view) {
super.configureTextView(view);
if (currentItem == currentValue) {
view.setTextColor(0xFF0000F0);
}
view.setTypeface(null, Typeface.BOLD);
}
@Override
public View getItem(int index, View cachedView, ViewGroup parent) {
currentItem = index;
return super.getItem(index, cachedView, parent);
}
}
private class DateArrayAdapter extends ArrayWheelAdapter<String> {
int currentItem;
int currentValue;
public DateArrayAdapter(Context context, String[] items, int current) {
super(context, items);
this.currentValue = current;
setTextSize(20);
}
@Override
protected void configureTextView(TextView view) {
super.configureTextView(view);
if (currentItem == currentValue) {
view.setTextColor(0xFF0000F0);
}
view.setTypeface(null, Typeface.BOLD);
}
@Override
public View getItem(int index, View cachedView, ViewGroup parent) {
currentItem = index;
return super.getItem(index, cachedView, parent);
}
}
public interface DatePickerListner {
public void OnDoneButton(Dialog datedialog, Calendar c);
public void OnCancelButton(Dialog datedialog);
}
}
MainActivity.java
import android.app.Dialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
TextView tvDate;
Button btShow;
Calendar dateandtime;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvDate=(TextView)findViewById(R.id.tvdate);
btShow=(Button)findViewById(R.id.Save);
dateandtime = Calendar.getInstance(Locale.US);
btShow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
DatePickerDailog dp = new DatePickerDailog(MainActivity.this,
dateandtime, new DatePickerDailog.DatePickerListner() {
@Override
public void OnDoneButton(Dialog datedialog, Calendar c) {
datedialog.dismiss();
dateandtime.set(Calendar.YEAR, c.get(Calendar.YEAR));
dateandtime.set(Calendar.MONTH,
c.get(Calendar.MONTH));
dateandtime.set(Calendar.DAY_OF_MONTH,
c.get(Calendar.DAY_OF_MONTH));
tvDate.setText(new SimpleDateFormat("dd MMMM yyyy")
.format(c.getTime()));
}
@Override
public void OnCancelButton(Dialog datedialog) {
// TODO Auto-generated method stub
datedialog.dismiss();
}
});
dp.show();
}
});
}
}
在 com 目录中添加名为 wheel 的文件夹，即 c:\DatePicker\app\src\main\java\com\wheel\
在 wheel 文件夹中 NumericWheelAdapter.java 即 c:\DatePicker\app\src\main\java\com\wheel\NumericWheelAdapter.java
import android.content.Context;
public class NumericWheelAdapter extends AbstractWheelTextAdapter {
/** The default min value */
public static final int DEFAULT_MAX_VALUE = 9;
/** The default max value */
private static final int DEFAULT_MIN_VALUE = 0;
// Values
private int minValue;
private int maxValue;
// format
private String format;
public NumericWheelAdapter(Context context) {
this(context, DEFAULT_MIN_VALUE, DEFAULT_MAX_VALUE);
}
public NumericWheelAdapter(Context context, int minValue, int maxValue) {
this(context, minValue, maxValue, null);
}
public NumericWheelAdapter(Context context, int minValue, int maxValue, String format) {
super(context);
this.minValue = minValue;
this.maxValue = maxValue;
this.format = format;
}
@Override
public CharSequence getItemText(int index) {
if (index >= 0 && index < getItemsCount()) {
int value = minValue + index;
return format != null ? String.format(format, value) : Integer.toString(value);
}
return null;
}
@Override
public int getItemsCount() {
return maxValue - minValue + 1;
}
}
在wheel文件夹中创建两个界面 1. OnWheelClickedListener.java 2. OnWheelChangedListener.java
OnWheelClickedListener.java
package com.wheel;
public interface OnWheelClickedListener {
void onItemClicked(WheelView wheel, int itemIndex);
}
OnWheelChangedListener.java
package com.wheel;
public interface OnWheelChangedListener {
void onChanged(WheelView wheel, int oldValue, int newValue);
}
输出屏幕，如 DatePicker
【讨论】：