我正在android中制作自定义日历我的要求是使多个日期选择与图像中显示的相同，任何人都有任何建议。直到现在我在视图上制作日历并尝试根据触摸绘制路径，但它对我不起作用。这里是我的代码：-
public class CalendarView extends View {
private float width; // width of one tile
private float height; // height of one tile
private int selX; // X index of selection
private int selY; // Y index of selection
private final Rect selRect = new Rect();
private GregorianCalendar month, itemmonth;// calendar instances.
private CalendarAdapter adapter;// adapter instance
private Context mContext ;
private GregorianCalendar pmonthmaxset;
private GregorianCalendar selectedDate;
private ArrayList<String> items;
private List<String> dayString;
private GregorianCalendar pmonth; // calendar instance for previous month
/**
* calendar instance for previous month for getting complete view
*/
private int firstDay;
private int maxWeeknumber;
private int maxP;
private int calMaxP;
private int lastWeekDay;
private int leftDays;
private int mnthlength;
private String itemvalue, curentDateString;
private DateFormat df;
private Canvas macanvas;
private Path mpath;
private float cselX; // X index of selection
private float cselY; // Y index of selection
public CalendarView(Context context) {
super(context);
mpath = new Path();
RectF mrectf = new RectF(selRect);
//mpath.ad
month = (GregorianCalendar) GregorianCalendar.getInstance();
itemmonth = (GregorianCalendar) month.clone();
Locale.setDefault(Locale.US);
selectedDate = (GregorianCalendar) month.clone();
mContext = context;
month.set(GregorianCalendar.DAY_OF_MONTH, 1);
this.items = new ArrayList<String>();
df = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
curentDateString = df.format(selectedDate.getTime());
dayString= new ArrayList<String>();
macanvas = new Canvas();
refreshDays();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
width = w / 7f;
height = (w)/(7f);
getRect(selX, selY, selRect);
super.onSizeChanged(w, h, oldw, oldh);
}
@Override
protected void onDraw(Canvas canvas) {
// Draw the background...
Paint background = new Paint();
background.setColor( Color.GRAY);
canvas.drawRect(0, 0, getWidth(), getHeight(), background);
// Draw the board...
// Define colors for the grid lines
Paint foreground = new Paint(Paint.ANTI_ALIAS_FLAG);
foreground.setColor(Color.RED);
Paint dark = new Paint();
dark.setColor(Color.BLUE);
Paint hilite = new Paint();
hilite.setColor(Color.BLUE);
Paint light = new Paint();
light.setColor(Color.BLUE);
// Draw the minor grid lines
for (int i = 0; i < 6; i++) {
canvas.drawLine(0, i * height, getWidth(), i * height,
light);
canvas.drawLine(0, i * height + 1, getWidth(), i * height
+ 1, hilite);
}
for (int i = 0; i < 8; i++) {
canvas.drawLine(i * width, 0, i * width,width*5,
light);
canvas.drawLine(i * width+1, 0, i * width+1,width*5,
light);
}
foreground.setColor(Color.RED);
foreground.setStyle(Style.FILL);
foreground.setTextSize(height * 0.75f);
foreground.setTextScaleX(width / height);
foreground.setTextAlign(Paint.Align.CENTER);
// Draw the number in the center of the tile
FontMetrics fm = foreground.getFontMetrics();
// Centering in X: use alignment (and X at midpoint)
float x = width / 2;
// Centering in Y: measure ascent/descent first
float y = height / 2 - (fm.ascent + fm.descent) / 2;
int k =0;
for (int i = 0; i < 7; i++) {
for (int j = 0; j < 5; j++) {
String datevalue = fillDate(k++);
canvas.drawText(datevalue, i
* width + x, j * height + y, foreground);
}
}
if(mpath!=null)
{
Paint selected = new Paint();
selected.setColor(Color.GREEN);
canvas.drawPath(mpath,selected);
// canvas.drawCircle(x, y, 25, selected);
}
super.onDraw(canvas);
}
private void getRect(int x, int y, Rect rect) {
rect.set((int) (x * width), (int) (y * height), (int) (x
* width + width), (int) (y * height + height));
}
public String fillDate(int index)
{
String date = "";
// separates daystring into parts.
String[] separatedTime = dayString.get(index).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) && (index < firstDay)) {
// setting offdays to white color.
//dayView.setTextColor(Color.WHITE);
//dayView.setClickable(false);
//dayView.setFocusable(false);
}
else if ((Integer.parseInt(gridvalue) < 7) && (index > 28)) {
//dayView.setTextColor(Color.WHITE);
//dayView.setClickable(false);
//dayView.setFocusable(false);
} else {
// setting curent month's days in blue color.
//dayView.setTextColor(Color.BLUE);
}
if (dayString.get(index).equals(curentDateString)) {
//setSelected(v);
//previousView = v;
} else {
//v.setBackgroundResource(R.drawable.list_item_background);
}
return gridvalue;
}
public void refreshDays() {
// clear items
items.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 ...
/**
* Calendar instance for getting a complete gridview including the three
* month's (previous,current,next) dates.
*/
pmonthmaxset = (GregorianCalendar) pmonth.clone();
/**
* setting the start date as previous month's required date.
*/
pmonthmaxset.set(GregorianCalendar.DAY_OF_MONTH, calMaxP + 1);
/**
* filling calendar gridview.
*/
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;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch(event.getAction())
{
case MotionEvent.ACTION_DOWN:
//select((int) (event.getX() / width),
// (int) (event.getY() / height));
mpath.moveTo(event.getX(), event.getY());
mpath.lineTo(event.getX(), event.getY());
break;
case MotionEvent.ACTION_MOVE:
invalidate();
cselX = event.getX();
cselY = event.getY();
mpath.lineTo(cselX,cselY);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
break;
}
return true;
}
private void select(int x, int y) {
selX = Math.min(Math.max(x, 0), 8);
selY = Math.min(Math.max(y, 0), 8);
getRect(selX, selY, selRect);
invalidate(selRect);
}
}