package widget;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.util.DisplayMetrics;import android.view.MotionEvent;import android.view.View;import com.arisaid.calendarview.R;import java.util.ArrayList;import java.util.Calendar;import java.util.List;/** * Created by zhouyou on 2016/7/25. * Class desc: * * 自定義日歷View，可多選 */public class CalendarView extends View {  // 列的數量  private static final int NUM_COLUMNS  =  7;  // 行的數量  private static final int NUM_ROWS    =  6;  /**   * 可選日期數據   */  private List<String> mOptionalDates;  /**   * 以選日期數據   */  private List<String> mSelectedDates = new ArrayList<>();  // 背景顏色  private int mBgColor = Color.parseColor("#F7F7F7");  // 天數默認顏色  private int mDayNormalColor = Color.parseColor("#0070F8");  // 天數不可選顏色  private int mDayNotOptColor = Color.parseColor("#CBCBCB");  // 天數選擇后顏色  private int mDayPressedColor = Color.WHITE;  // 天數字體大小  private int mDayTextSize = 14;  // 是否可以被點擊狀態  private boolean mClickable = true;  private DisplayMetrics mMetrics;  private Paint mPaint;  private int mCurYear;  private int mCurMonth;  private int mCurDate;  private int mSelYear;  private int mSelMonth;  private int mSelDate;  private int mColumnSize;  private int mRowSize;  private int[][] mDays;  // 當月一共有多少天  private int mMonthDays;  // 當月第一天位于周幾  private int mWeekNumber;  // 已選中背景Bitmap  private Bitmap mBgOptBitmap;  // 未選中背景Bitmap  private Bitmap mBgNotOptBitmap;  public CalendarView(Context context) {    super(context);    init();  }  public CalendarView(Context context, AttributeSet attrs) {    super(context, attrs);    init();  }  public CalendarView(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    init();  }  private void init() {    // 獲取手機屏幕參數    mMetrics = getResources().getDisplayMetrics();    // 創建畫筆    mPaint = new Paint();    // 獲取當前日期    Calendar calendar = Calendar.getInstance();    mCurYear  =  calendar.get(Calendar.YEAR);    mCurMonth  =  calendar.get(Calendar.MONTH);    mCurDate  =  calendar.get(Calendar.DATE);    setSelYTD(mCurYear, mCurMonth, mCurDate);    // 獲取背景Bitmap    mBgOptBitmap  = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_bg_course_optional);    mBgNotOptBitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_bg_course_not_optional);  }  @Override  public void invalidate() {    // 避免程序過度繪制    if(hasWindowFocus()) super.invalidate();  }  @Override  protected void onDraw(Canvas canvas) {    initSize();    // 繪制背景    mPaint.setColor(mBgColor);    canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), mPaint);    mDays = new int[6][7];    // 設置繪制字體大小    mPaint.setTextSize(mDayTextSize * mMetrics.scaledDensity);    // 設置繪制字體顏色    String dayStr;    // 獲取當月一共有多少天    mMonthDays = DateUtils.getMonthDays(mSelYear, mSelMonth);    // 獲取當月第一天位于周幾    mWeekNumber = DateUtils.getFirstDayWeek(mSelYear, mSelMonth);    for(int day = 0; day < mMonthDays; day++){      dayStr = String.valueOf(day + 1);      int column = (day + mWeekNumber - 1) % 7;      int row   = (day + mWeekNumber - 1) / 7;      mDays[row][column] = day + 1;      int startX = (int) (mColumnSize * column + (mColumnSize - mPaint.measureText(dayStr)) / 2);      int startY = (int) (mRowSize * row + mRowSize / 2 - (mPaint.ascent() + mPaint.descent()) / 2);      // 判斷當前天數是否可選      if(mOptionalDates.contains(getSelData(mSelYear, mSelMonth, mDays[row][column]))){        // 可選，繼續判斷是否是點擊過的        if(!mSelectedDates.contains(getSelData(mSelYear, mSelMonth, mDays[row][column]))){          // 沒有點擊過，繪制默認背景          canvas.drawBitmap(mBgNotOptBitmap, startX - 22, startY - 55, mPaint);          mPaint.setColor(mDayNormalColor);        }else{          // 點擊過，繪制點擊過的背景          canvas.drawBitmap(mBgOptBitmap, startX - 22, startY - 55, mPaint);          mPaint.setColor(mDayPressedColor);        }        // 繪制天數        canvas.drawText(dayStr, startX, startY - 10, mPaint);      }else{        mPaint.setColor(mDayNotOptColor);        canvas.drawText(dayStr, startX, startY, mPaint);      }    }  }  private int downX = 0,downY = 0;  @Override  public boolean onTouchEvent(MotionEvent event) {    int eventCode = event.getAction();    switch(eventCode){      case MotionEvent.ACTION_DOWN:        downX = (int) event.getX();        downY = (int) event.getY();        break;      case MotionEvent.ACTION_MOVE:        break;      case MotionEvent.ACTION_UP:        if(!mClickable) return true;        int upX = (int) event.getX();        int upY = (int) event.getY();        if(Math.abs(upX - downX) < 10 && Math.abs(upY - downY) < 10){          performClick();          onClick((upX + downX) / 2, (upY + downY) / 2);        }        break;    }    return true;  }  /**   * 點擊事件   */  private void onClick(int x, int y){    int row = y / mRowSize;    int column = x / mColumnSize;    setSelYTD(mSelYear, mSelMonth, mDays[row][column]);    // 判斷是否點擊過    boolean isSelected = mSelectedDates.contains(getSelData(mSelYear, mSelMonth, mSelDate));    if(isSelected){      mSelectedDates.remove(getSelData(mSelYear, mSelMonth, mSelDate));    }else{      mSelectedDates.add(getSelData(mSelYear, mSelMonth, mSelDate));    }    invalidate();    if(mListener != null){      // 執行回調      mListener.onClickDateListener(mSelYear, (mSelMonth + 1), mSelDate);    }  }  /**   * 初始化列寬和高   */  private void initSize() {    // 初始化每列的大小    mColumnSize = getWidth() / NUM_COLUMNS;    // 初始化每行的大小    mRowSize = getHeight() / NUM_ROWS;  }  /**   * 設置可選擇日期   * @param dates 日期數據   */  public void setOptionalDate(List<String> dates){    this.mOptionalDates = dates;  }  /**   * 設置年月日   * @param year 年   * @param month 月   * @param date 日   */  public void setSelYTD(int year, int month, int date){    this.mSelYear  =  year;    this.mSelMonth =  month;    this.mSelDate  =  date;  }  /**   * 設置上一個月日歷   */  public void setLastMonth(){    int year  =  mSelYear;    int month  =  mSelMonth;    int day   =  mSelDate;    // 如果是1月份，則變成12月份    if(month == 0){      year = mSelYear-1;      month = 11;    }else if(DateUtils.getMonthDays(year, month) == day){      //　如果當前日期為該月最后一點，當向前推的時候，就需要改變選中的日期      month = month-1;      day = DateUtils.getMonthDays(year, month);    }else{      month = month-1;    }    setSelYTD(year,month,day);    invalidate();  }  /**   * 設置下一個日歷   */  public void setNextMonth(){    int year  =  mSelYear;    int month  =  mSelMonth;    int day   =  mSelDate;    // 如果是12月份，則變成1月份    if(month == 11){      year = mSelYear+1;      month = 0;    }else if(DateUtils.getMonthDays(year, month) == day){      //　如果當前日期為該月最后一點，當向前推的時候，就需要改變選中的日期      month = month + 1;      day = DateUtils.getMonthDays(year, month);    }else{      month = month + 1;    }    setSelYTD(year,month,day);    invalidate();  }  /**   * 獲取當前展示的年和月份   * @return 格式：2016-06   */  public String getDate(){    String data;    if((mSelMonth + 1) < 10){      data = mSelYear + "-0" + (mSelMonth + 1);    }else{      data = mSelYear + "-" + (mSelMonth + 1);    }    return data;  }  /**   * 獲取當前展示的日期   * @return 格式：20160606   */  private String getSelData(int year, int month, int date){    String monty, day;    month = (month + 1);    // 判斷月份是否有非0情況    if((month) < 10) {      monty = "0" + month;    }else{      monty = String.valueOf(month);    }    // 判斷天數是否有非0情況    if((date) < 10){      day = "0" + (date);    }else{      day = String.valueOf(date);    }    return year + monty + day;  }  /**   * 獲取已選日期數據   */  public List<String> getSelectedDates(){    return mSelectedDates;  }  /**   * 設置已選日期數據   */  public void setSelectedDates(List<String> dates){    this.mSelectedDates = dates;  }  /**   * 設置日歷是否可以點擊   */  @Override  public void setClickable(boolean clickable) {    this.mClickable = clickable;  }  private OnClickListener mListener;  public interface OnClickListener{    void onClickDateListener(int year, int month, int day);  }  /**   * 設置點擊回調   */  public void setOnClickDate(OnClickListener listener){    this.mListener = listener;  }  @Override  protected void onDetachedFromWindow() {    super.onDetachedFromWindow();    recyclerBitmap(mBgOptBitmap);    recyclerBitmap(mBgNotOptBitmap);  }  /**   * 釋放Bitmap資源   */  private void recyclerBitmap(Bitmap bitmap) {    if(bitmap != null && !bitmap.isRecycled()){      bitmap.recycle();    }  }}

List<String> mDatas = new ArrayList<>();mDatas.add("20160801");mDatas.add("20160802");mDatas.add("20160803");mDatas.add("20160816");mDatas.add("20160817");mDatas.add("20160826");mDatas.add("20160910");mDatas.add("20160911");mDatas.add("20160912");

// 設置可選日期mCalendarView.setOptionalDate(mDatas);

mCalendarView.setOnClickDate(new CalendarView.OnClickListener() {  @Override  public void onClickDateListener(int year, int month, int day) {    Toast.makeText(getApplication(), year + "年" + month + "月" + day + "天", Toast.LENGTH_SHORT).show();    // 獲取已選擇日期    List<String> dates = mCalendarView.getSelectedDates();    for (String date : dates) {      Log.e("test", "date: " + date);    }  }});

// 設置已選日期mCalendarView.setSelectedDates(mDatas);// 設置不可以被點擊mCalendarView.setClickable(false);