问题：
是否显示日历中的事件列表？
查宜民
我可以在日历下面的列表中显示事件，但我希望通过JSON数据显示日历中的事件。我已使用CalendarView显示日历。我看了这个，但没能解决我真正想要的问题。
xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#2E353D"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_gravity="center_horizontal"
android:orientation="horizontal">
<ImageView
android:layout_width="30dp"
android:layout_height="match_parent"
android:padding="3dp"
android:src="@mipmap/calander" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="8dp"
android:text="Calendar"
android:textColor="#fff"
android:textSize="17dp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<com.prolificinteractive.materialcalendarview.MaterialCalendarView
android:id="@+id/calendar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<!-- <CalendarView
android:id="@+id/calendar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true" /> -->
<ListView
android:id="@+id/calenderlist"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
日历片段
public class CalenderFragment extends Fragment implements OnMonthChangedListener {
String Navigation_URL = "http://192.168.100.5:84/api/academics/getEvents";
String access_token;
ListView listView;
com.prolificinteractive.materialcalendarview.MaterialCalendarView calendarView;
ArrayList<CalenderPojoStudent> student_list_calender = new ArrayList<>();
private HashMap<Integer, List<Event>> map = new HashMap<>();
private List<CalendarDay> calevents = new ArrayList<>();
private Calendar cal;
private List<Event> eventList = new ArrayList<>();
private MyAdapterCalendar adapter;
private SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault());
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.calender, container, false);
getActivity().setTitle("");
setHasOptionsMenu(true);
calendarView = (com.prolificinteractive.materialcalendarview.MaterialCalendarView) view.findViewById(R.id.calendar);
final Calendar calendar = Calendar.getInstance();
calendarView.setSelectedDate(calendar.getTime());
calendarView.setSelectedDate(calendar.getTime());
listView = (ListView) view.findViewById(R.id.calenderlist);
adapter = new MyAdapterCalendar(getActivity(), eventList);
// listView.setAdapter(adapter);
// calendarView.addDecorator(new HighlightWeekendsDecorator());
calendarView.addDecorator(new OneDayDecorator());
// calendarView.addDecorator(new EventDecorator(Color.RED, calendarDays));
// calendarView.addView(onMonthChanged(calendarView,date));
// calendarView.addDecorator(new EventDecorator(Color.RED, calendarDays));
//calendarView.addDecorator(new MySelectorDecorator(getActivity()));
// calendarView.addDecorator(new EventDecorator("#FF0000",student_list_calender));
// calendarView.addDecorator(new EventDecorator("",));
//calendarView.setDateTextAppearance(View.ACCESSIBILITY_LIVE_REGION_ASSERTIVE);
SessionManagement session = new SessionManagement(getContext());
session.checkLogin();
access_token = session.getAccesstToken();
makeJsonObjectRequest();
return view;
}
// List<Event> events = new ArrayList<>();
private void makeJsonObjectRequest() {
RequestQueue requestQueue = Volley.newRequestQueue(getContext());
String URL = Navigation_URL;
StringRequest stringRequest = new StringRequest(Request.Method.GET, URL,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONArray jArray = new JSONArray(response);
for (int i = 0; i < jArray.length(); i++) {
JSONObject jsonObject = jArray.getJSONObject(i);
String StartDate = jsonObject.getString("StartDate");
String Title = jsonObject.getString("Title");
try {
Date date = simpleDateFormat.parse(StartDate);
Log.d("Date ", "" + date);
CalendarDay day1 = CalendarDay.from(date);
Event event = new Event(date, Title);
cal = Calendar.getInstance();
cal.setTime(date);
int month = cal.get(Calendar.MONTH);
if (!map.containsKey(month)) {
List<Event> events = new ArrayList<>();
events.add(event);
map.put(month, events);
} else {
List<Event> events = map.get(month);
events.add(event);
map.put(month, events);
}
calevents.add(day1);
} catch (ParseException e) {
e.printStackTrace();
}
}
//CalenderAdapter calenderAdapter = new CalenderAdapter(getActivity(), student_list_calender);
//listView.setAdapter(calenderAdapter);
cal = Calendar.getInstance();
int month = cal.get(Calendar.MONTH);
List<Event> event = map.get(month);
if (event != null && event.size() > 0)
adapter.addItems(event);
listView.setAdapter(adapter);
EventDecorator eventDecorator = new EventDecorator(Color.RED, calevents);
calendarView.addDecorator(eventDecorator);
} catch (JSONException e) {
makeText(getContext(), "Fetch failed!", LENGTH_SHORT).show();
e.printStackTrace();
}
//
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
makeText(getContext(), error.toString(), LENGTH_LONG).show();
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = new HashMap<String, String>();
headers.put("Authorization", "Bearer " + access_token);
headers.put("Content-Type", "application/x-www-form-urlencoded");
return headers;
}
/*
@Override
protected Map<String, String> getParams() throws com.android.volley.AuthFailureError {
Map<String, String> map = new HashMap<String, String>();
map.put("id", master_id);
map.put("accessID", accessID);
map.put("currentUser", master_id);
return map;
} */
};
requestQueue.add(stringRequest);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// TODO Auto-generated method stub
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.dashboard, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle item selection
switch (item.getItemId()) {
case R.id.action_settings:
// do s.th.
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onMonthChanged(MaterialCalendarView widget, CalendarDay date) {
// CalenderAdapter calenderAdapter = new CalenderAdapter(getActivity(), student_list_calender);
// listView.setAdapter(calenderAdapter);
Calendar cal = Calendar.getInstance();
cal.setTime(date.getDate());
int month = cal.get(Calendar.MONTH);
List<Event> event = map.get(month);
if (event != null && event.size() > 0)
adapter.addItems(event);
widget.invalidateDecorators();
}
}
活动装饰
public class EventDecorator implements DayViewDecorator {
/*
private final Drawable drawable;
private final CalendarDay day;
private final int color;
public EventDecorator(MaterialCalendarView view, Date date, int colors) {
// super(view);
this.day = CalendarDay.from(date);
this.color = colors;
this.drawable = createTintedDrawable(view.getContext(), color);
}
@Override
public boolean shouldDecorate(CalendarDay day) {
if (this.day.equals(day)) {
return true;
}
return false;
}
@Override
public void decorate(DayViewFacade view) {
view.setSelectionDrawable(drawable);
}
private static Drawable createTintedDrawable(Context context, int color) {
return applyTint(createBaseDrawable(context), color);
}
private static Drawable applyTint(Drawable drawable, int color) {
Drawable wrappedDrawable = DrawableCompat.wrap(drawable);
DrawableCompat.setTint(wrappedDrawable, color);
return wrappedDrawable;
}
private static Drawable createBaseDrawable(Context context) {
return ContextCompat.getDrawable(context, R.drawable.ic_menu_send);
}
*/
private int color;
private HashSet<CalendarDay> dates;
public EventDecorator(int color, Collection<CalendarDay> dates) {
this.color = color;
this.dates = new HashSet<>(dates);
}
@Override
public boolean shouldDecorate(CalendarDay day) {
return dates.contains(day);
}
@Override
public void decorate(DayViewFacade view) {
view.addSpan(new DotSpan(5, color));
}
}
事件
public class Event {
private Date date;
private String events;
public Event(Date date, String events) {
this.date = date;
this.events = events;
}
public Date getDate() {
return date;
}
public String getEvents() {
return events;
}
}
我的适配器日历
public class MyAdapterCalendar extends ArrayAdapter<Event> {
private List<Event> list;
private LayoutInflater mInflater;
public MyAdapterCalendar(Context context, List<Event> list) {
super(context, R.layout.activity_calendar_event, list);
this.mInflater = LayoutInflater.from(context);
this.list = list;
}
static class ViewHolder {
TextView text;
}
public void addItems(List<Event> list) {
this.list.clear();
this.list.addAll(list);
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.activity_calendar_event, parent, false);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView.findViewById(R.id.label);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.text.setText(list.get(position).getEvents());
return convertView;
}
}
activity\u calendar\u事件
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Hello World"
android:textSize="20sp"></TextView>
</RelativeLayout>
JSON
[
{
"EventID": 1011,
"Title": "May Day",
"Description": "Holiday for the International Labour Day",
"StartDate": "2017-05-01T00:00:00",
"StartTime": "00:00:00",
"EndDate": "2017-05-02T00:00:00",
"EndTime": "00:00:00",
"IsFullDay": true,
"IsHoliday": false,
"DateTime": null
},
{
"EventID": 1020,
"Title": "d",
"Description": "",
"StartDate": "2017-04-27T00:00:00",
"StartTime": "05:45:00",
"EndDate": "2017-04-27T00:00:00",
"EndTime": "05:45:00",
"IsFullDay": false,
"IsHoliday": false,
"DateTime": null
},
{
"EventID": 1019,
"Title": "Mother's Day",
"Description": "Mother's day",
"StartDate": "2017-04-26T00:00:00",
"StartTime": "10:00:00",
"EndDate": "2017-04-26T00:00:00",
"EndTime": "18:00:00",
"IsFullDay": false,
"IsHoliday": false,
"DateTime": null
}
]
我想在特定日期下显示点，它显示为事件。具体的月份应该列出具体的月份事件，而不是所有的事件，这是我目前正在讨论的事件。
共有3个答案
袁骏祥
我假设您希望显示月份类型日历中的事件列表。ZCustomCalendar允许您为不同类型的日期创建自定义视图。在该自定义视图中，您可以定义一个列表视图，然后可以在其中显示事件列表。
家西岭
您将需要一个EventDecorator类，如
public class EventDecorator implements DayViewDecorator {
private int color;
private HashSet<CalendarDay> dates;
public EventDecorator(int color, Collection<CalendarDay> dates) {
this.color = color;
this.dates = new HashSet<>(dates);
}
@Override
public boolean shouldDecorate(CalendarDay day) {
return dates.contains(day);
}
@Override
public void decorate(DayViewFacade view) {
view.addSpan(new DotSpan(5, color));
}
}
然后在主要活动/片段上，您需要使用同步任务来获取json数据并设置日历中的事件，就像这个示例一样。
/**
* Shows off the most basic usage
*/
public class BasicActivityDecorated extends AppCompatActivity implements OnDateSelectedListener {
private final OneDayDecorator oneDayDecorator = new OneDayDecorator();
@BindView(R.id.calendarView)
MaterialCalendarView widget;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_basic);
ButterKnife.bind(this);
widget.setOnDateChangedListener(this);
widget.setShowOtherDates(MaterialCalendarView.SHOW_ALL);
Calendar instance = Calendar.getInstance();
widget.setSelectedDate(instance.getTime());
Calendar instance1 = Calendar.getInstance();
instance1.set(instance1.get(Calendar.YEAR), Calendar.JANUARY, 1);
Calendar instance2 = Calendar.getInstance();
instance2.set(instance2.get(Calendar.YEAR), Calendar.DECEMBER, 31);
widget.state().edit()
.setMinimumDate(instance1.getTime())
.setMaximumDate(instance2.getTime())
.commit();
widget.addDecorators(
new MySelectorDecorator(this),
new HighlightWeekendsDecorator(),
oneDayDecorator
);
new ApiSimulator().executeOnExecutor(Executors.newSingleThreadExecutor());
}
@Override
public void onDateSelected(@NonNull MaterialCalendarView widget, @NonNull CalendarDay date, boolean selected) {
//If you change a decorate, you need to invalidate decorators
oneDayDecorator.setDate(date.getDate());
widget.invalidateDecorators();
}
/**
* Simulate an API call to show how to add decorators
*/
private class ApiSimulator extends AsyncTask<Void, Void, List<CalendarDay>> {
@Override
protected List<CalendarDay> doInBackground(@NonNull Void... voids) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.MONTH, -2);
ArrayList<CalendarDay> dates = new ArrayList<>();
for (int i = 0; i < 30; i++) {
CalendarDay day = CalendarDay.from(calendar);
dates.add(day);
calendar.add(Calendar.DATE, 5);
}
return dates;
}
@Override
protected void onPostExecute(@NonNull List<CalendarDay> calendarDays) {
super.onPostExecute(calendarDays);
if (isFinishing()) {
return;
}
widget.addDecorator(new EventDecorator(Color.RED, calendarDays));
}
}
}
您需要设置该类的模式以包含api调用，并使用该响应将日期绑定到日历。希望这会有帮助！
劳豪
您需要添加点跨距。此外，我还必须阅读图书馆的文档，因为我自己没有使用过这个。
步骤1：在Fragment类中
private List<CalendarDay> events = new ArrayList<>();
第2步：
private void makeJsonObjectRequest() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.getDefault());
// i copied your json to load form assets folder
// in our case you can get the json from the server
// or any other location of your choice
String response = loadJSONFromAsset();
try {
JSONArray jArray = new JSONArray(response);
for (int i = 0; i < jArray.length(); i++) {
JSONObject jsonObject = jArray.getJSONObject(i);
String StartDate = jsonObject.getString("StartDate");
Date date = simpleDateFormat.parse(StartDate);
Log.d("Date ",""+date);
CalendarDay day = CalendarDay.from(date);
events.add(day);
}
} catch (Exception e) {
e.printStackTrace();
}
EventDecorator eventDecorator = new EventDecorator(Color.RED, events);
calendarView.addDecorator(eventDecorator);
}
步骤3：更改EventDecorator类
public class EventDecorator implements DayViewDecorator {
private int color;
private HashSet<CalendarDay> dates;
public EventDecorator(int color, Collection<CalendarDay> dates) {
this.color = color;
this.dates = new HashSet<>(dates);
}
@Override
public boolean shouldDecorate(CalendarDay day) {
return dates.contains(day);
}
@Override
public void decorate(DayViewFacade view) {
view.addSpan(new DotSpan(5, color));
}
}
您可以查看DotSpan并自定义它。这是一个线性背景跨度
我模拟器上的屏幕截图
编辑：
具体的月份应该列出具体的月份事件，而不是所有的事件，这是我目前正在讨论的事件。
您需要检查当前显示的月份，并确保同步listview以相应地显示事件。根据日历显示的月份，清除用于在列表中显示事件的列表数据，并刷新列表。
或者你可以点击日期显示当天的事件。
你怎么做就留给你了。你可以看看这个https://github.com/memfis19/Cadar库，该库应提供见解或帮助您相应地修改代码。根据显示的月份，列表显示事件。
编辑2：
我的适配器类
public class MyAdapter extends ArrayAdapter<Event> {
private List<Event> list;
private LayoutInflater mInflater;
public MyAdapter(Context context, List<Event> list) {
super(context, R.layout.row, list);
this.mInflater = LayoutInflater.from(context);
this.list = list;
}
static class ViewHolder {
TextView text;
}
public void addItems(List<Event> list) {
this.list.clear();
this.list.addAll(list);
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.row, parent,false);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) convertView.findViewById(R.id.label);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.text.setText(list.get(position).getEvents());
return convertView;
}
}
我的日历片段
public class CalendarFragment extends Fragment implements OnMonthChangedListener {
private MaterialCalendarView calendarView;
private List<CalendarDay> calevents = new ArrayList<>();
private List<Event> eventList = new ArrayList<>();
private HashMap<Integer,List<Event>> map = new HashMap<>();
private ListView listView;
private MyAdapter adapter;
private Calendar cal;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.calendar, container, false);
listView = (ListView)view.findViewById(R.id.listview);
adapter = new MyAdapter(getActivity(),eventList);
listView.setAdapter(adapter);
calendarView = view.findViewById(R.id.calendarView);
calendarView.setDateTextAppearance(View.ACCESSIBILITY_LIVE_REGION_ASSERTIVE);
final Calendar calendar = Calendar.getInstance();
calendarView.setSelectedDate(calendar.getTime());
calendarView.setOnDateChangedListener(new OnDateSelectedListener() {
@Override
public void onDateSelected(@NonNull MaterialCalendarView widget, @NonNull CalendarDay date, boolean selected) {
calendarView.setHeaderTextAppearance(R.style.AppTheme);
}
});
calendarView.setOnMonthChangedListener(this);
makeJsonObjectRequest();
return view;
}
private void makeJsonObjectRequest() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.getDefault());
String response = loadJSONFromAsset();
try {
JSONArray jArray = new JSONArray(response);
for (int i = 0; i < jArray.length(); i++) {
JSONObject jsonObject = jArray.getJSONObject(i);
String StartDate = jsonObject.getString("StartDate");
Date date = simpleDateFormat.parse(StartDate);
String title = jsonObject.getString("Title");
Log.d("Date ",""+date);
CalendarDay day = CalendarDay.from(date);
Event event = new Event(date,title);
cal = Calendar.getInstance();
cal.setTime(date);
int month = cal.get(Calendar.MONTH);
if(!map.containsKey(month))
{
List<Event> events = new ArrayList<>();
events.add(event);
map.put(month,events);
}else
{
List<Event> events = map.get(month);
events.add(event);
map.put(month,events);
}
calevents.add(day);
}
} catch (Exception e) {
e.printStackTrace();
}
// after parsing
cal = Calendar.getInstance();
int month = cal.get(Calendar.MONTH);
List<Event> event = map.get(month);
adapter.addItems(event);
EventDecorator eventDecorator = new EventDecorator(Color.RED, calevents);
calendarView.addDecorator(eventDecorator);
}
public String loadJSONFromAsset() {
String json = null;
try {
InputStream is = getActivity().getAssets().open("testjson.json");
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
json = new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
return json;
}
@Override
public void onMonthChanged(MaterialCalendarView widget, CalendarDay date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date.getDate());
int month = cal.get(Calendar.MONTH);
List<Event> event = map.get(month);
adapter.addItems(event);
}
}
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