我有一个自定义日历，修改自此处看到的日历。在初始加载时，它会按预期显示所有内容。
但是我有两个问题。
1.) 在上个月按钮上，它按预期从八月到七月，但它并没有清除所有图像。
2.) 从七月到八月，它停留在七月并重新安排日期。
基础适配器：
public class CalendarAdapter extends BaseAdapter {
private Context mContext;
private java.util.Calendar month;
public GregorianCalendar pmonth; // calendar instance for previous month
public GregorianCalendar pmonthmaxset;
private GregorianCalendar selectedDate;
public static List<String> dayString;
private List<String[]> anArrayOfStrings = new ArrayList<String[]>();
int firstDay, maxWeeknumber, maxP, calMaxP, lastWeekDay, leftDays, mnthlength;
String itemvalue, curentDateString;
DateFormat df;
ImageView mimgPeriod, mimgEnergy, mimgIntercorse, mimgPregancy, mimgHeadache, mimgMood;
DateFormat formatter;
Date rowdatetemp;
Date caldatetemp;
String box;
private int mHeight = 0;
private int mWidth = 0;
public CalendarAdapter(Context c, GregorianCalendar monthCalendar) {
CalendarAdapter.dayString = new ArrayList<String>();
Locale.setDefault( Locale.US );
month = monthCalendar;
selectedDate = (GregorianCalendar) monthCalendar.clone();
mContext = c;
month.set(GregorianCalendar.DAY_OF_MONTH, 1);
new ArrayList<String>();
df = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
curentDateString = df.format(selectedDate.getTime());
refreshDays();
box = null;
}
public void setItems(List<String[]> anArrayOfStrings) {
this.anArrayOfStrings = anArrayOfStrings;
}
public int getCount() {
return dayString.size();
}
public Object getItem(int position) {
return dayString.get(position);
}
public long getItemId(int position) {
return 0;
}
// create a new view for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
TextView dayView;
if (convertView == null) { // if it's not recycled, initialize some
// attributes
LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.calendar_item, null);
}
dayView = (TextView) v.findViewById(R.id.date);
// separates daystring into parts.
String[] separatedTime = dayString.get(position).split("-");
// taking last part of date. ie; 2 from 2012-12-02
String gridvalue = separatedTime[2].replaceFirst("^0*", "");
// checking whether the day is in current month or not.
if ((Integer.parseInt(gridvalue) > 1) && (position < firstDay)) {
// setting offdays to white color.
dayView.setTextColor(Color.WHITE);
dayView.setClickable(false);
dayView.setFocusable(false);
} else if ((Integer.parseInt(gridvalue) < 7) && (position > 28)) {
dayView.setTextColor(Color.WHITE);
dayView.setClickable(false);
dayView.setFocusable(false);
} else {
// setting curent month's days in blue color.
dayView.setTextColor(Color.BLUE);
}
dayView.setText(gridvalue);
//create date string for comparison
String date = dayString.get(position);
if (date.length() == 1) {
date = "0" + date;
}
String monthStr = "" + (month.get(GregorianCalendar.MONTH) + 1);
if (monthStr.length() == 1) {
monthStr = "0" + monthStr;
}
//look in the hashtable in order to find the position date and then populate the img's
if ((anArrayOfStrings != null) && (anArrayOfStrings.size() > 0)) {
if (formatter == null) {
formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
}
Log.i("PROJECTCARUSO","Date: " + date);
for (String[] row : anArrayOfStrings) {
//convert date's
try {
caldatetemp = (Date)formatter.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
try {
rowdatetemp = (Date)formatter.parse(row[0]);
} catch (ParseException e) {
e.printStackTrace();
}
// current position date in calendar
// array date is after the calendar date
if (rowdatetemp.after(caldatetemp)) {
break;
//current position date > first array date then continue to see if there is one for this date
} else if (rowdatetemp.before(caldatetemp)) {
continue;
//Found a match
} else if (date.equalsIgnoreCase(row[0])) {
for (int i = 1; i < row.length; i++) {
Log.i("PROJECTCARUSO","row[" + i +"]: " + row[i]);
//Now that we have a match look through each detail
if ( row[i]!= null ) {
if ((i == 1) && ((row[i].equalsIgnoreCase("yes")) || (isNumeric(row[i])))) {
mimgPeriod = (ImageView) v.findViewById(R.id.imgPeriod);
setVisible(v, mimgPeriod);
mimgPeriod.setImageAlpha(100);
box = "red";
continue;
}
if ((i == 2) && ((row[i].equalsIgnoreCase("yes")) || (isNumeric(row[i])))) {
mimgIntercorse = (ImageView) v.findViewById(R.id.imgIntercorse);
setVisible(v, mimgIntercorse);
mimgIntercorse.setImageAlpha(100);
continue;
}
if ((i == 4) && ((row[i].equalsIgnoreCase("yes")) || (isNumeric(row[i])))) {
mimgHeadache = (ImageView) v.findViewById(R.id.imgHeadache);
setVisible(v, mimgHeadache);
mimgHeadache.setImageAlpha(100);
continue;
}
if ((i == 5) && ((row[i].equalsIgnoreCase("yes")) || (isNumeric(row[i])))) {
mimgPregancy = (ImageView) v.findViewById(R.id.imgPregancy);
setVisible(v, mimgPregancy);
mimgPregancy.setImageAlpha(100);
continue;
}
}
if (( row[i]!= null ) && (i == 6) && (!row[i].equalsIgnoreCase("no"))) {
mimgEnergy = (ImageView) v.findViewById(R.id.imgEnergy);
setImg(v, mimgEnergy, row[i].toString());
setVisible(v, mimgEnergy);
continue;
}
if (( row[i]!= null ) && (i == 3) && (!row[i].equalsIgnoreCase("no"))) {
mimgMood = (ImageView) v.findViewById(R.id.imgMood);
setImg(v, mimgMood, row[i].toString());
setVisible(v, mimgMood);
continue;
}
if (( row[i]!= null ) && (i == 7) || (box != null)) {
if (box == null) {
if (row[i].equalsIgnoreCase("no")) {
box = "brown";
} else {
box = "yellow";
}
}
Drawable []layers = new Drawable [2];
int imageResource1 = mContext.getResources().getIdentifier("drawable/calendar_cell", null, mContext.getPackageName());
Drawable background = v.getResources().getDrawable(imageResource1);
layers [0]= background;
int imageResource = mContext.getResources().getIdentifier("drawable/box_" + box, null, mContext.getPackageName());
Drawable boxImg = v.getResources().getDrawable(imageResource);
boxImg.setAlpha(100);
layers [1]= boxImg;
LayerDrawable layerDrawable = new LayerDrawable (layers);
mWidth = v.getWidth();
mHeight=v.getHeight();
v.getLayoutParams().height = mHeight;
v.getLayoutParams().width = mWidth;
v.setBackground(layerDrawable);
//reset
box = null;
continue;
}
}
} else {
break;
}
}
} else {
Log.i("PROJECTCARUSO","RESETING VIEWS TO INVISIBLE");
mimgMood = (ImageView) v.findViewById(R.id.imgMood);
mimgEnergy = (ImageView) v.findViewById(R.id.imgEnergy);
mimgPregancy = (ImageView) v.findViewById(R.id.imgPregancy);
mimgHeadache = (ImageView) v.findViewById(R.id.imgHeadache);
mimgIntercorse = (ImageView) v.findViewById(R.id.imgIntercorse);
mimgPeriod = (ImageView) v.findViewById(R.id.imgPeriod);
setInvisibleVisible(v, mimgMood);
setInvisibleVisible(v, mimgEnergy);
setInvisibleVisible(v, mimgPregancy);
setInvisibleVisible(v, mimgHeadache);
setInvisibleVisible(v, mimgIntercorse);
setInvisibleVisible(v, mimgPeriod);
}
//clear the array after using it.
//anArrayOfStrings.clear();
return v;
}
public View setVisible(View view, ImageView iv) {
iv.setVisibility(View.VISIBLE);
return view;
}
public View setInvisibleVisible(View view, ImageView iv) {
iv.setVisibility(View.INVISIBLE);
return view;
}
public View setImg(View view, ImageView iv, String mood) {
iv.setImageAlpha(100);
iv.setVisibility(View.VISIBLE);
int draw = mContext.getResources().getIdentifier("drawable/" + mood, null, mContext.getPackageName());
iv.setImageResource(draw);
return view;
}
public void refreshDays() {
// clear items
anArrayOfStrings.clear();
dayString.clear();
Locale.setDefault( Locale.US );
pmonth = (GregorianCalendar) month.clone();
// month start day. ie; sun, mon, etc
firstDay = month.get(GregorianCalendar.DAY_OF_WEEK);
// finding number of weeks in current month.
maxWeeknumber = month.getActualMaximum(GregorianCalendar.WEEK_OF_MONTH);
// allocating maximum row number for the gridview.
mnthlength = maxWeeknumber * 7;
maxP = getMaxP(); // previous month maximum day 31,30....
calMaxP = maxP - (firstDay - 1);// calendar offday starting 24,25 ...
pmonthmaxset = (GregorianCalendar) pmonth.clone();
pmonthmaxset.set(GregorianCalendar.DAY_OF_MONTH, calMaxP + 1);
for (int n = 0; n < mnthlength; n++) {
itemvalue = df.format(pmonthmaxset.getTime());
pmonthmaxset.add(GregorianCalendar.DATE, 1);
dayString.add(itemvalue);
}
}
private int getMaxP() {
int maxP;
if (month.get(GregorianCalendar.MONTH) == month
.getActualMinimum(GregorianCalendar.MONTH)) {
pmonth.set((month.get(GregorianCalendar.YEAR) - 1),
month.getActualMaximum(GregorianCalendar.MONTH), 1);
} else {
pmonth.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) - 1);
}
maxP = pmonth.getActualMaximum(GregorianCalendar.DAY_OF_MONTH);
return maxP;
}
@SuppressWarnings("unused")
public static boolean isNumeric(String str)
{
try
{
double d = Double.parseDouble(str);
}
catch(NumberFormatException nfe)
{
return false;
}
return true;
}
}
日历：
public class CalendarFragment extends Fragment {
public GregorianCalendar month;// calendar instances.
public CalendarAdapter adapter; // adapter instance
public Handler handler; // for grabbing some event values for showing the dot
// marker.
public ArrayList<String> items; // container to store calendar items which
// needs showing the event marker
int i;
List<String[]> anArrayOfStrings = new ArrayList<String[]>();
String startdate, enddate;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_calendar, null);
month = (GregorianCalendar) GregorianCalendar.getInstance();
month.set(Calendar.DAY_OF_MONTH, 1-1);
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd",Locale.US);
//start date for cursor
startdate = df.format(month.getTime());
//end date
month.add(Calendar.MONTH, 1);
month.add(Calendar.DAY_OF_MONTH, +5);
enddate = df.format(month.getTime());
month.add(Calendar.MONTH, -1);
Locale.setDefault( Locale.US );
month = (GregorianCalendar) GregorianCalendar.getInstance();
items = new ArrayList<String>();
adapter = new CalendarAdapter(getActivity(), month);
GridView gridview = (GridView) view.findViewById(R.id.gridview);
gridview.setAdapter(adapter);
handler = new Handler();
handler.post(calendarUpdater);
TextView title = (TextView) view.findViewById(R.id.title);
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
RelativeLayout previous = (RelativeLayout) view.findViewById(R.id.previous);
previous.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setPreviousMonth();
refreshCalendar();
}
});
RelativeLayout next = (RelativeLayout) view.findViewById(R.id.next);
next.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setNextMonth();
refreshCalendar();
}
});
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
String selectedGridDate = CalendarAdapter.dayString
.get(position);
String[] separatedTime = selectedGridDate.split("-");
String gridvalueString = separatedTime[2].replaceFirst("^0*",
"");// taking last part of date. ie; 2 from 2012-12-02.
int gridvalue = Integer.parseInt(gridvalueString);
// navigate to next or previous month on clicking offdays.
if ((gridvalue > 10) && (position < 8)) {
setPreviousMonth();
refreshCalendar();
} else if ((gridvalue < 7) && (position > 28)) {
setNextMonth();
refreshCalendar();
}
}
});
return view;
}
protected void setNextMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMaximum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) + 1),
month.getActualMinimum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) + 1);
}
}
protected void setPreviousMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMinimum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) - 1),
month.getActualMaximum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) - 1);
}
}
public void refreshCalendar() {
TextView title = (TextView) getActivity().findViewById(R.id.title);
adapter.refreshDays();
adapter.notifyDataSetChanged();
handler.post(calendarUpdater); // generate some calendar items
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
}
public Runnable calendarUpdater = new Runnable() {
@Override
public void run() {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd",Locale.US);
//start date for cursor
month.add(Calendar.DAY_OF_MONTH, -1);
startdate = df.format(month.getTime());
//end date
month.add(Calendar.MONTH, 1);
enddate = df.format(month.getTime());
month.add(Calendar.MONTH, -1);
anArrayOfStrings.clear();
// Get the data
Cursor c = getActivity().getContentResolver().query(StatusProvider.CONTENT_URI_CHARTING, null, "? < " + StatusData.KEY_CHARTING_DATE + " AND ? > " + StatusData.KEY_CHARTING_DATE , new String[] {startdate, enddate}, StatusData.KEY_CHARTING_DATE + " ASC");
c.moveToFirst();
while(c.isAfterLast() == false){
anArrayOfStrings.add( new String [] {c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_DATE)),
c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_PERIOD)), c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_INTERCORSE)),
c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_MOOD)), c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_HEADACHE)),
c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_TEST)), c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_ENERGY)),
c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_FERTILE) )});
Log.i("PROJECTCARUSO","DATE ADDED TO ARRAY:" + c.getString(c.getColumnIndex(StatusData.KEY_CHARTING_DATE)));
i+=1;
c.moveToNext();
}
adapter.setItems(anArrayOfStrings);
adapter.notifyDataSetChanged();
}
};
}
Calendar_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/calendar_cell"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:textColor="#0000D7"
android:textSize="14sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/imgPeriod"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/period"
android:visibility="invisible"/>
<ImageView
android:id="@+id/imgIntercorse"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/intercorse"
android:visibility="invisible" />
<ImageView
android:id="@+id/imgPregancy"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/pregnancy"
android:visibility="invisible" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/imgEnergy"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/energy_1"
android:visibility="invisible" />
<ImageView
android:id="@+id/imgHeadache"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/pregnancy"
android:visibility="invisible" />
<ImageView
android:id="@+id/imgMood"
android:layout_width="15dp"
android:layout_height="15dp"
android:src="@drawable/mood"
android:visibility="invisible" />
</LinearLayout>
</LinearLayout>
片段日历.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/calendar_top" >
<RelativeLayout
android:id="@+id/previous"
android:layout_width="40dip"
android:layout_height="30dip"
android:layout_alignParentLeft="true" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/arrow_left" />
</RelativeLayout>
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="5dip"
android:textColor="#000000"
android:textSize="18dip"
android:textStyle="bold" />
<RelativeLayout
android:id="@+id/next"
android:layout_width="40dip"
android:layout_height="30dip"
android:layout_alignParentRight="true" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@drawable/arrow_right" />
</RelativeLayout>
</RelativeLayout>
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:listSelector="@android:color/transparent"
android:numColumns="7"
android:stretchMode="columnWidth" />
</LinearLayout>