} else if (position < firstDayWeek) { rows[j].cells[i] = new Cell(new CustomDate(mShowDate.year, mShowDate.month - 1, lastMonthDays
State.PAST_MONTH_DAY, i, j); // 下个月 } else if (position >= firstDayWeek + currentMonthDays) { rows[j].cells[i] = new Cell((new CustomDate(mShowDate.year, mShowDate.month + 1, position - firstDayWeek
State.NEXT_MONTH_DAY, i, j); } } } mCellClickListener.changeDate(mShowDate); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); for (int i = 0; i < TOTAL_ROW; i++) { if (rows[i] != null) { rows[i].drawCells(canvas); } } } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mViewWidth = w; mViewHeight = h; mCellSpace = Math.min(mViewHeight / TOTAL_ROW, mViewWidth / TOTAL_COL); if (!callBackCellSpace) { callBackCellSpace = true; } mTextPaint.setTextSize(mCellSpace / 3); } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: mDownX = event.getX(); mDownY = event.getY(); break; case MotionEvent.ACTION_UP: float disX = event.getX() - mDownX; float disY = event.getY() - mDownY; if (Math.abs(disX) < touchSlop && Math.abs(disY) < touchSlop) { int col = (int) (mDownX / mCellSpace); int row = (int) (mDownY / mCellSpace); measureClickCell(col, row); } break; default: break; } return true; } /**
*/ private void measureClickCell(int col, int row) { if (col >= TOTAL_COL || row >= TOTAL_ROW) return; if (mClickCell != null) { rows[mClickCell.j].cells[mClickCell.i] = mClickCell; } if (rows[row] != null) { mClickCell = new Cell(rows[row].cells[col].date, rows[row].cells[col].state, rows[row].cells[col].i, rows[row].cells[col].j); CustomDate date = rows[row].cells[col].date; date.week = col; mCellClickListener.clickDate(date); // 刷新界面 update(); } } /**
*/ class Row { public int j; Row(int j) { this.j = j; } public Cell[] cells = new Cell[TOTAL_COL]; // 绘制单元格 public void drawCells(Canvas canvas) { for (int i = 0; i < cells.length; i++) { if (cells[i] != null) { cells[i].drawSelf(canvas); } } } } /**
*/ class Cell { public CustomDate date; public State state; public int i; public int j; public Cell(CustomDate date, State state, int i, int j) { super(); this.date = date; this.state = state; this.i = i; this.j = j; } public void drawSelf(Canvas canvas) { switch (state) { case TODAY: // 今天 mTextPaint.setColor(Color.parseColor("#fffffe")); canvas.drawCircle((float) (mCellSpace * (i + 0.5)), (float) ((j + 0.5) * mCellSpace), mCellSpace / 3, mCirclePaint); break; case CURRENT_MONTH_DAY: // 当前月日期 mTextPaint.setColor(Color.BLACK); break; case PAST_MONTH_DAY: // 过去一个月 case NEXT_MONTH_DAY: // 下一个月 mTextPaint.setColor(Color.parseColor("#fffffe")); break; case UNREACH_DAY: // 还未到的天 mTextPaint.setColor(Color.GRAY); break; default: break; } // 绘制文字 String content = date.day + ""; canvas.drawText(content, (float) ((i + 0.5) * mCellSpace - mTextPaint .measureText(content) / 2), (float) ((j + 0.7)
.measureText(content, 0, 1) / 2), mTextPaint); } } /**
*/ enum State { TODAY,CURRENT_MONTH_DAY, PAST_MONTH_DAY, NEXT_MONTH_DAY, UNREACH_DAY; } // 从左往右划,上一个月 public void leftSlide() { if (mShowDate.month == 1) { mShowDate.month = 12; mShowDate.year -= 1; } else { mShowDate.month -= 1; } update(); } // 从右往左划,下一个月 public void rightSlide() { if (mShowDate.month == 12) { mShowDate.month = 1; mShowDate.year += 1; } else { mShowDate.month += 1; } update(); } public void update() { fillDate(); invalidate(); } } /CustomCalendarView/src/com/xiaowu/calendar/DateUtil.java package com.xiaowu.calendar; import android.annotation.SuppressLint; import android.util.Log; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class DateUtil { public static String[] weekName = { "周日", "周一", "周二", "周三", "周四", "周五","周六" }; public static int getMonthDays(int year, int month) { if (month > 12) { month = 1; year += 1; } else if (month < 1) { month = 12; year -= 1; } int[] arr = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; int days = 0; if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) { arr[1] = 29; // 闰年2月29天 } try { days = arr[month - 1]; } catch (Exception e) { e.getStackTrace(); } return days; } public static int getYear() { return Calendar.getInstance().get(Calendar.YEAR); } public static int getMonth() { return Calendar.getInstance().get(Calendar.MONTH) + 1; } public static int getCurrentMonthDay() { return Calendar.getInstance().get(Calendar.DAY_OF_MONTH); } public static int getWeekDay() { return Calendar.getInstance().get(Calendar.DAY_OF_WEEK); } public static int getHour() { return Calendar.getInstance().get(Calendar.HOUR_OF_DAY); } public static int getMinute() { return Calendar.getInstance().get(Calendar.MINUTE); } public static CustomDate getNextSunday() { Calendar c = Calendar.getInstance(); c.add(Calendar.DATE, 7 - getWeekDay()+1); CustomDate date = new CustomDate(c.get(Calendar.YEAR), c.get(Calendar.MONTH)+1, c.get(Calendar.DAY_OF_MONTH)); return date; } public static int[] getWeekSunday(int year, int month, int day, int pervious) { int[] time = new int[3]; Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR, year); c.set(Calendar.MONTH, month); c.set(Calendar.DAY_OF_MONTH, day); c.add(Calendar.DAY_OF_MONTH, pervious); time[0] = c.get(Calendar.YEAR); time[1] = c.get(Calendar.MONTH )+1; time[2] = c.get(Calendar.DAY_OF_MONTH); return time; } public static int getWeekDayFromDate(int year, int month) { Calendar cal = Calendar.getInstance(); cal.setTime(getDateFromString(year, month)); int week_index = cal.get(Calendar.DAY_OF_WEEK) - 1; if (week_index < 0) { week_index = 0; } return week_index; } @SuppressLint("SimpleDateFormat") public static Date getDateFromString(int year, int month) { String dateString = year + "-" + (month > 9 ? month : ("0" + month))
Date date = null; try { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); date = sdf.parse(dateString); } catch (ParseException e) { System.out.println(e.getMessage()); } return date; } public static boolean isToday(CustomDate date){ return(date.year == DateUtil.getYear() && date.month == DateUtil.getMonth() && date.day == DateUtil.getCurrentMonthDay()); } public static boolean isCurrentMonth(CustomDate date){ return(date.year == DateUtil.getYear() && date.month == DateUtil.getMonth()); } } /CustomCalendarView/src/com/xiaowu/calendar/CustomDate.java、 package com.xiaowu.calendar; import java.io.Serializable; public class CustomDate implements Serializable{ private static final long serialVersionUID = 1L; public int year; public int month; public int day; public int week; public CustomDate(int year,int month,int day){ if(month > 12){ month = 1; 《Android学习笔记总结+最新移动架构视频+大厂安卓面试真题+项目实战源码讲义》 浏览器打开:qq.cn.hn/FTe 开源分享 year++; }else if(month <1){ month = 12; year--; } this.year = year; this.month = month; this.day = day; } public CustomDate(){ this.year = DateUtil.getYear(); this.month = DateUtil.getMonth(); this.day = DateUtil.getCurrentMonthDay(); } public static CustomDate modifiDayForObject(CustomDate date,int day){ CustomDate modifiDate = new CustomDate(date.year,date.month,day); return modifiDate; } @Override public String toString() { return year+"-"+month+"-"+day; } public int getYear() { return year; } public void setYear(int year) { this.year = year; } public int getMonth() { return month; } public void setMonth(int month) { this.month = month; } public int getDay() { return day; } public void setDay(int day) { this.day = day; } public int getWeek() { return week; } public void setWeek(int week) { this.week = week; } } 所有绘制的操作在onDraw方面里实现,我这里定于了一个组对象Row、单元格元素Cell,通过Row[row].cell[col]来确定一个单元格,每次调用invalidate重绘视图。 接着,我们有一个需求需要左右切换,我们选用最熟悉的ViewPager,但这里有个问题,怎么实现无限循环呢, 这里我们传入一个日历卡数组,让ViewPager循环复用这几个日历卡,避免消耗内存。 /CustomCalendarView/src/com/xiaowu/calendar/CalendarViewAdapter.java package com.xiaowu.calendar; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.view.View; import android.view.ViewGroup; public class CalendarViewAdapterextends PagerAdapter { public static final String TAG = "CalendarViewAdapter"; private V[] views; public CalendarViewAdapter(V[] views) { super(); this.views = views; } @Override public Object instantiateItem(ViewGroup container, int position) { if (((ViewPager) container).getChildCount() == views.length) { ((ViewPager) container).removeView(views[position % views.length]); } ((ViewPager) container).addView(views[position % views.length], 0); return views[position % views.length]; } @Override public int getCount() { return Integer.MAX_VALUE; } @Override public boolean isViewFromObject(View view, Object object) { return view == ((View) object); } @Override public void destroyItem(ViewGroup container, int position, Object object) { ((ViewPager) container).removeView((View) container); } public V[] getAllItems() { return views; } } 布局文件: <LinearLayout xmlns:android="http://schemas./apk/res/android" xmlns:tools="http://schemas./tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="50dp" android:background="#f6f1ea" <ImageButton android:id="@+id/btnPreMonth" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginRight="33dip" android:layout_toLeftOf="@+id/tvCurrentMonth" android:background="@drawable/ic_before" /> <ImageButton android:id="@+id/btnNextMonth" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="33dip" android:layout_toRightOf="@+id/tvCurrentMonth" android:background="@drawable/ic_next" /> <TextView android:id="@+id/tvCurrentMonth" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_centerVertical="true" android:text="11月" android:textColor="#323232" android:textSize="22sp" /> <ImageButton android:id="@+id/btnClose" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_marginRight="15dp" android:background="@drawable/ic_close" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="15dp" android:orientation="vertical" <TableLayout android:layout_width="match_parent" android:layout_height="20dip" android:layout_marginBottom="2dip" android:layout_marginTop="2dip" > <TextView style="@style/dateStyle" android:text="@string/sunday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/monday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/thesday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/wednesday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/thursday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/friday" android:textColor="@color/canlendar_text_color" /> <TextView style="@style/dateStyle" android:text="@string/saturday" android:textColor="@color/canlendar_text_color" /> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:orientation="vertical" android:layout_weight="1" android:layout_marginTop="15dp"> <android.support.v4.view.ViewPager android:id="@+id/vp_calendar" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:background="@color/white" > </android.support.v4.view.ViewPager> /CustomCalendarView/src/com/xiaowu/calendar/MainActivity.java package com.xiaowu.calendar; import android.app.Activity; import android.os.Bundle; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.ImageButton; import android.widget.TextView; import com.xiaowu.calendar.CalendarCard.OnCellClickListener; public class MainActivity extends Activity implements OnClickListener, OnCellClickListener{ private ViewPager mViewPager; private int mCurrentIndex = 498; private CalendarCard[] mShowViews; private CalendarViewAdapteradapter; private SildeDirection mDirection = SildeDirection.NO_SILDE; enum SildeDirection { RIGHT, LEFT, NO_SILDE; } private ImageButton preImgBtn, nextImgBtn; private TextView monthText; private ImageButton closeImgBtn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); mViewPager = (ViewPager) this.findViewById(R.id.vp_calendar); preImgBtn = (ImageButton) this.findViewById(R.id.btnPreMonth); nextImgBtn = (ImageButton) this.findViewById(R.id.btnNextMonth); monthText = (TextView) this.findViewById(R.id.tvCurrentMonth); closeImgBtn = (ImageButton) this.findViewById(R.id.btnClose); preImgBtn.setOnClickListener(this); nextImgBtn.setOnClickListener(this); closeImgBtn.setOnClickListener(this); CalendarCard[] views = new CalendarCard[3]; for (int i = 0; i < 3; i++) { views[i] = new CalendarCard(this, this); } adapter = new CalendarViewAdapter<>(views); setViewPager(); } private void setViewPager() { mViewPager.setAdapter(adapter); mViewPager.setCurrentItem(498); mViewPager.setOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int position) { measureDirection(position); updateCalendarView(position); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } }); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.btnPreMonth: |
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