如何使用Android实现可滑动的自定义日历控件
小编给大家分享一下如何使用Android实现可滑动的自定义日历控件,希望大家阅读完这篇文章之后都有所收获,下面让我们一起去探讨吧!
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最近用到的一个日历控件,记录下,效果如图
代码下载地址:点击打开链接
布局文件
日历PopCalendar.class的代码
public class PopCalendar extends PopupWindow implements View.OnClickListener { private View contentView; private Context mContext; private WindowManager windowManager; private GestureDetector gestureDetector = null; private CalendarAdapter calV = null; private ViewFlipper flipper = null; private GridView gvCalendar = null; private static int jumpMonth = 0; // 每次滑动,增加或减去一个月,默认为0(即显示当前月) private static int jumpYear = 0; // 滑动跨越一年,则增加或者减去一年,默认为0(即当前年) private int yearC = 0; private int monthC = 0; private int dayC = 0; private String currentDate = ""; //当前年月,显示在日历顶端 private TextView currentMonthTv; //上个月,下个月的图标 private ImageView prevMonthIv; private ImageView nextMonthIv; public PopCalendar(final Activity context) { this.mContext = context; this.windowManager = context.getWindowManager();; Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d"); currentDate = sdf.format(date); // 当期日期 yearC = Integer.parseInt(currentDate.split("-")[0]); monthC = Integer.parseInt(currentDate.split("-")[1]); dayC = Integer.parseInt(currentDate.split("-")[2]); jumpMonth = 0; jumpYear = 0; //设置PopWindow的属性 LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); contentView = inflater.inflate(R.layout.pop_calendar, null); this.setContentView(contentView); this.setWidth(WindowManager.LayoutParams.FILL_PARENT); this.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); this.setFocusable(true); this.setOutsideTouchable(true); this.update(); ColorDrawable dw = new ColorDrawable(0000000000); this.setBackgroundDrawable(dw); currentMonthTv = (TextView) contentView.findViewById(R.id.currentMonth); prevMonthIv = (ImageView) contentView.findViewById(R.id.prevMonth); nextMonthIv = (ImageView) contentView.findViewById(R.id.nextMonth); setListener(); gestureDetector = new GestureDetector(mContext, new MyGestureListener()); flipper = (ViewFlipper) contentView.findViewById(R.id.flipper); flipper.removeAllViews(); calV = new CalendarAdapter(mContext, mContext.getResources(), jumpMonth, jumpYear, yearC, monthC, dayC); addGridView(); gvCalendar.setAdapter(calV); flipper.addView(gvCalendar, 0); addTextToTopTextView(currentMonthTv); } private class MyGestureListener extends GestureDetector.SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e1.getX() - e2.getX() > 120) { // 像左滑动 enterNextMonth(); return true; } else if (e1.getX() - e2.getX() < -120) { // 向右滑动 enterPrevMonth(); return true; } return false; } } /** * 移动到下一个月 * */ private void enterNextMonth() { addGridView(); // 添加一个gridView jumpMonth++; // 下一个月 calV = new CalendarAdapter(mContext, mContext.getResources(), jumpMonth, jumpYear, yearC, monthC, dayC); gvCalendar.setAdapter(calV); addTextToTopTextView(currentMonthTv); // 移动到下一月后,将当月显示在头标题中 flipper.addView(gvCalendar, 1); flipper.setInAnimation(AnimationUtils.loadAnimation(mContext, R.anim.push_left_in)); flipper.setOutAnimation(AnimationUtils.loadAnimation(mContext, R.anim.push_left_out)); flipper.showNext(); flipper.removeViewAt(0); } /** * 移动到上一个月 * */ private void enterPrevMonth() { addGridView(); // 添加一个gridView jumpMonth--; // 上一个月 calV = new CalendarAdapter(mContext, mContext.getResources(), jumpMonth, jumpYear, yearC, monthC, dayC); gvCalendar.setAdapter(calV); addTextToTopTextView(currentMonthTv); // 移动到上一月后,将当月显示在头标题中 flipper.addView(gvCalendar, 1); flipper.setInAnimation(AnimationUtils.loadAnimation(mContext, R.anim.push_right_in)); flipper.setOutAnimation(AnimationUtils.loadAnimation(mContext, R.anim.push_right_out)); flipper.showPrevious(); flipper.removeViewAt(0); } /** * 添加头部的年份 闰哪月等信息 * @param view */ public void addTextToTopTextView(TextView view) { StringBuffer textDate = new StringBuffer(); textDate.append(calV.getShowYear()).append("年").append(calV.getShowMonth()).append("月").append("\t"); view.setText(textDate); } private void addGridView() { LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(AbsListView.LayoutParams.MATCH_PARENT, AbsListView.LayoutParams.MATCH_PARENT); // 取得屏幕的宽度和高度 Display display = windowManager.getDefaultDisplay(); int Width = display.getWidth(); int Height = display.getHeight(); gvCalendar = new GridView(mContext); gvCalendar.setNumColumns(7); gvCalendar.setColumnWidth(40); // gridView.setStretchMode(GridView.STRETCH_COLUMN_WIDTH); if (Width == 720 && Height == 1280) { gvCalendar.setColumnWidth(40); } gvCalendar.setGravity(Gravity.CENTER_VERTICAL); gvCalendar.setSelector(new ColorDrawable(Color.TRANSPARENT)); // 去除gridView边框 gvCalendar.setVerticalSpacing(2); gvCalendar.setHorizontalSpacing(2); gvCalendar.setOnTouchListener(new View.OnTouchListener() { // 将gridView中的触摸事件回传给gestureDetector public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub return PopCalendar.this.gestureDetector.onTouchEvent(event); } }); gvCalendar.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView> arg0, View arg1, int position, long arg3) { // TODO Auto-generated method stub // 点击任何一个item,得到这个item的日期(排除点击的是周日到周六(点击不响应)) int startPosition = calV.getStartPosition(); int endPosition = calV.getEndPosition(); if (startPosition <= position + 7 && position <= endPosition - 7) { String scheduleDay = calV.getDateByClickItem(position); // 这一天的阳历 String scheduleYear = calV.getShowYear(); String scheduleMonth = calV.getShowMonth(); Toast.makeText(mContext, scheduleYear + "-" + scheduleMonth + "-" + scheduleDay, Toast.LENGTH_SHORT).show(); } } }); gvCalendar.setLayoutParams(params); } private void setListener() { prevMonthIv.setOnClickListener(this); nextMonthIv.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.nextMonth: // 下一个月 enterNextMonth(); break; case R.id.prevMonth: // 上一个月 enterPrevMonth(); break; default: break; } } /** * 显示popWindow */ public void showPopupWindow(View parent) { if (!this.isShowing()) { // 以下拉方式显示popupwindow this.showAsDropDown(parent); } else { this.dismiss(); } } }
日历的内容是一个GridView,可以自定义类似签到效果的图标
日历的adapter
public class CalendarAdapter extends BaseAdapter { private boolean isLeapYear = false; // 是否为闰年 private int daysOfMonth = 0; // 某月的天数 private int dayOfWeek = 0; // 具体某一天是星期几 private int lastDaysOfMonth = 0; // 上一个月的总天数 private Context context; private String[] dayNumber = new String[42]; // 一个gridview中的日期存入此数组中 private SpecialCalendar sc = null; private Resources res = null; private String currentYear = ""; private String currentMonth = ""; private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d"); private int currentFlag = -1; // 用于标记当天 private String showYear = ""; // 用于在头部显示的年份 private String showMonth = ""; // 用于在头部显示的月份 // 系统当前时间 private String sysDate = ""; private String sys_year = ""; private String sys_month = ""; private String sys_day = ""; public CalendarAdapter() { Date date = new Date(); sysDate = sdf.format(date); // 当期日期 sys_year = sysDate.split("-")[0]; sys_month = sysDate.split("-")[1]; sys_day = sysDate.split("-")[2]; } public CalendarAdapter(Context context, Resources rs, int jumpMonth, int jumpYear, int year_c, int month_c, int day_c) { this(); this.context = context; sc = new SpecialCalendar(); this.res = rs; int stepYear = year_c + jumpYear; int stepMonth = month_c + jumpMonth; if (stepMonth > 0) { // 往下一个月滑动 if (stepMonth % 12 == 0) { stepYear = year_c + stepMonth / 12 - 1; stepMonth = 12; } else { stepYear = year_c + stepMonth / 12; stepMonth = stepMonth % 12; } } else { // 往上一个月滑动 stepYear = year_c - 1 + stepMonth / 12; stepMonth = stepMonth % 12 + 12; if (stepMonth % 12 == 0) { } } currentYear = String.valueOf(stepYear); // 得到当前的年份 currentMonth = String.valueOf(stepMonth); // 得到本月 // (jumpMonth为滑动的次数,每滑动一次就增加一月或减一月) getCalendar(Integer.parseInt(currentYear), Integer.parseInt(currentMonth)); } @Override public int getCount() { // TODO Auto-generated method stub return dayNumber.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (convertView == null) { convertView = LayoutInflater.from(context).inflate(R.layout.calendar_item, null); } TextView textView = (TextView) convertView.findViewById(R.id.tv_text); ImageView ivPen = (ImageView) convertView.findViewById(R.id.iv_pen); String d = dayNumber[position]; SpannableString sp = new SpannableString(d); sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), 0, d.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); sp.setSpan(new RelativeSizeSpan(1.2f), 0, d.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); textView.setText(sp); textView.setTextColor(Color.BLACK);// 字体设黑 if (position % 7 == 0 || position % 7 == 6) { // 当前月信息显示 textView.setTextColor(res.getColor(R.color.green));// 周末字体设绿色 } if (position >= dayOfWeek && position < daysOfMonth + dayOfWeek && (Integer.parseInt(sys_month) >= Integer.parseInt(currentMonth)&&Integer.parseInt(sys_year)==Integer.parseInt(currentYear) ||Integer.parseInt(sys_year)> Integer.parseInt(currentYear))) { // 当前月信息显示 int a[] = {2, 6, 29};//每个月不标记的天数 for (int i = 0; i < a.length; i++) { if (position == a[i]+dayOfWeek-1) { textView.setBackgroundColor(res.getColor(R.color.yellow));//为写日记日期填充黄色 ivPen.setVisibility(View.INVISIBLE); break; } else { ivPen.setVisibility(View.VISIBLE); } } } else if (position < dayOfWeek || position >= daysOfMonth + dayOfWeek) { textView.setTextColor(res.getColor(R.color.bg_gray)); } if (Integer.parseInt(sys_year)==Integer.parseInt(currentYear) &&Integer.parseInt(sys_month) == Integer.parseInt(currentMonth)&& currentFlag < position) { // 设置本月当天之后的背景 textView.setBackgroundColor(res.getColor(R.color.bg_gray));//全部填充灰色 ivPen.setVisibility(View.INVISIBLE); } if (currentFlag == position) { //设置当天的背景 textView.setBackgroundColor(res.getColor(R.color.blue)); textView.setTextColor(Color.WHITE); } return convertView; } // 得到某年的某月的天数且这月的第一天是星期几 public void getCalendar(int year, int month) { isLeapYear = sc.isLeapYear(year); // 是否为闰年 daysOfMonth = sc.getDaysOfMonth(isLeapYear, month); // 某月的总天数 dayOfWeek = sc.getWeekdayOfMonth(year, month); // 某月第一天为星期几 lastDaysOfMonth = sc.getDaysOfMonth(isLeapYear, month - 1); // 上一个月的总天数 getWeek(year, month); } // 将一个月中的每一天的值添加入数组dayNuber中 private void getWeek(int year, int month) { int j = 1; // 得到当前月的所有日程日期(这些日期需要标记) for (int i = 0; i < dayNumber.length; i++) { if (i < dayOfWeek) { // 前一个月 int temp = lastDaysOfMonth - dayOfWeek + 1; dayNumber[i] = (temp + i) + "" ; } else if (i < daysOfMonth + dayOfWeek) { // 本月 String day = String.valueOf(i - dayOfWeek + 1); // 得到的日期 dayNumber[i] = i - dayOfWeek + 1 + ""; // 对于当前月才去标记当前日期 if (sys_year.equals(String.valueOf(year)) && sys_month.equals(String.valueOf(month)) && sys_day.equals(day)) { // 标记当前日期 currentFlag = i; } setShowYear(String.valueOf(year)); setShowMonth(String.valueOf(month)); } else { // 下一个月 dayNumber[i] = j + ""; j++; } } } /** * 点击每一个item时返回item中的日期 * @param position * @return */ public String getDateByClickItem(int position) { return dayNumber[position]; } /** * 在点击gridView时,得到这个月中第一天的位置 * @return */ public int getStartPosition() { return dayOfWeek + 7; } /** * 在点击gridView时,得到这个月中最后一天的位置 * @return */ public int getEndPosition() { return (dayOfWeek + daysOfMonth + 7) - 1; } public String getShowYear() { return showYear; } public void setShowYear(String showYear) { this.showYear = showYear; } public String getShowMonth() { return showMonth; } public void setShowMonth(String showMonth) { this.showMonth = showMonth; } }
在MainActivity点击显示日历,可以指定PopWindow在哪一个控件的下方出现
public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final Button button = (Button)findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { PopCalendar popCalendar = new PopCalendar(MainActivity.this); popCalendar.showPopupWindow(button); } }); } }
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