Android使用GridView实现日历的方法

概述在开发中可能会遇到某些情况下需要用到日历的功能,并且还要在日历上加标签什么的,最重要的就是android自带的日历由于各个系统版本不同导致日历的样式也不同,这样就会导致使用起来比较麻烦..而且在日历中加标签也不好

在开发中可能会遇到某些情况下需要用到日历的功能,并且还要在日历上加标签什么的,最重要的就是androID自带的日历由于各个系统版本不同导致日历的样式也不同,这样就会导致使用起来比较麻烦..而且在日历中加标签也不好实现...所以很多时候日历都是自己去实现的...由于自定义日历会比较麻烦...这里就教大家使用GrIDVIEw来实现,主要是我们比较熟悉这个控件...到时候也可以根据自己的情况进行封装为自定义view

下面就先看看效果图.由于是从项目中抽取出来的,某些地方定制性比较强,可以根据需求自行修改

效果图

图中的红点就是标签,蓝色背景就是选中的意思.

下面开始撸代码:

先上核心的GrIDVIEw的适配器:

Calendaradapter.java

/** * 日历grIDvIEw中的每一个item显示的textvIEw */public class Calendaradapter extends BaseAdapter {  private static String TAG = "Calendaradapter";  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 int currentYear = 0;  private int currentMonth = 0;  /**   * 当前选中的日期位置   */  private int currentFlag = -1;  /**   * 当前选中天的字符串 例:20170830   */  private String currentDayStr;  private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-M-d");  private Set<Integer> schDateTagFlag = new ArraySet<>(); //存储当月所有的日程日期(标签)  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   private String animalsYear = "";  private String leapMonth = "";  //闰哪一个月   private Set<String> mSet = null;  /**   * 距离当前月的差(上一个月-1,当前月0,下一个月+1)   */  private int jumpMonth = 0;  public Calendaradapter(Context context,int year,int month,String currentDayStr) {    this.context = context;    sc = new SpecialCalendar();    currentYear = year;    currentMonth = month; //得到跳转到的月份    this.currentDayStr = currentDayStr;    getCalendar(currentYear,currentMonth);  }  @OverrIDe  public int getCount() {    return dayNumber.length;  }  @OverrIDe  public Object getItem(int position) {    return position;  }  @OverrIDe  public long getItemID(int position) {    return position;  }  @OverrIDe  public VIEw getVIEw(int position,VIEw convertVIEw,VIEwGroup parent) {    VIEwHolder myVIEwHolder = null;    if (convertVIEw == null || convertVIEw.getTag() == null) {      convertVIEw = LayoutInflater.from(context).inflate(R.layout.item_select_time,null);      myVIEwHolder = new VIEwHolder(convertVIEw);      convertVIEw.setTag(myVIEwHolder);    } else {      myVIEwHolder = (VIEwHolder) convertVIEw.getTag();    }    myVIEwHolder.mIDTvItemSelectTimeDay.setText(dayNumber[position]);    myVIEwHolder.mIDTvItemSelectTimeDay.setTextcolor(color.GRAY);//不是当前月为灰    if (position < daysOfMonth + dayOfWeek && position >= dayOfWeek) {      // 当前月信息显示       myVIEwHolder.mIDTvItemSelectTimeDay.setTextcolor(color.BLACK);// 当月字体设黑      myVIEwHolder.mIDTvItemSelectTimeDay.setTag(true);// 当月字体设黑    }else {      myVIEwHolder.mIDTvItemSelectTimeDay.setTag(false);// 当月字体设黑    }    if (currentFlag != -1 && currentFlag == position) {      //设置当天的背景      myVIEwHolder.mIDTvItemSelectTimeDay.setBackgroundResource(R.color.mainMenu);      myVIEwHolder.mIDTvItemSelectTimeDay.setTextcolor(color.WHITE);    } else {      myVIEwHolder.mIDTvItemSelectTimeDay.setBackgroundcolor(0);    }    //显示小圆点    if (schDateTagFlag != null && schDateTagFlag.size() > 0) {      if (schDateTagFlag.contains(position)) {        if (myVIEwHolder.mIDimgItemSelectTimelogo.getVisibility()!=VIEw.VISIBLE) {          myVIEwHolder.mIDimgItemSelectTimelogo.setVisibility(VIEw.VISIBLE);        }      } else {        if (myVIEwHolder.mIDimgItemSelectTimelogo.getVisibility()!=VIEw.GONE) {          myVIEwHolder.mIDimgItemSelectTimelogo.setVisibility(VIEw.GONE);        }      }    } else {      if (myVIEwHolder.mIDimgItemSelectTimelogo.getVisibility()!=VIEw.GONE) {        myVIEwHolder.mIDimgItemSelectTimelogo.setVisibility(VIEw.GONE);      }    }    return convertVIEw;  }  /**   * 下一个月   */  public voID addMonth() {    jumpMonth++;  }  /**   * 上一个月   */  public voID lessMonth() {    jumpMonth--;  }  /**   * 更新日历数据   */  public voID upDataMonth() {    int stepYear;    int stepMonth = currentMonth + jumpMonth;    if (stepMonth > 0) {      //下一个月      if (stepMonth % 12 == 0) {        stepYear = currentYear + stepMonth / 12 - 1;        stepMonth = 12;      } else {        stepYear = currentYear + stepMonth / 12;        stepMonth = stepMonth % 12;      }    } else {      //上一个月      stepYear = currentYear - 1 + stepMonth / 12;      stepMonth = stepMonth % 12 + 12;    }    getCalendar(stepYear,stepMonth);  }  /**   * 得到某年的某月的天数且这月的第一天是星期几   *   * @param year   * @param month   */  private 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   *   * @param year   * @param month   */  private voID getWeek(int year,int month) {    schDateTagFlag.clear();    currentFlag = -1;    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        int day = 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         String yearStr = String.valueOf(year);        String monthStr =getStr(String.valueOf(month),2);        String dayStr =getStr(String.valueOf(day),2);        String timeAll = yearStr + monthStr + dayStr;        if (timeAll.equals(currentDayStr)) {//判断选中的位置          currentFlag = i;        }        if (mSet != null && mSet.size() > 0) {          for (String s : mSet) {//迭代器遍历判断是否需要带标签            if (timeAll.equals(s)) {              schDateTagFlag.add(i);            }          }        }        setShowYear(yearStr);        setShowMonth(String.valueOf(month));      } else {  //下一个月        dayNumber[i] = j + "";        j++;      }    }  }  /**   * 获取当前时间 样式:20170830   * @param position   * @return   */  public String getItemTime(int position) {    String month = getStr(getShowMonth(),2);    String day = getStr(getDateByClickItem(position),2);    return getShowYear() + month + day;  }  /**   * 保留n位整数,不足前面补0   *   * @param file String   * @param bit 位数   * @return   */  public static String getStr(String file,int bit) {    while (file.length() < bit)      file = "0" + file;    return file;  }  /**   * 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 getStartPositon() {    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;  }  public String getAnimalsYear() {    return animalsYear;  }  public voID setAnimalsYear(String animalsYear) {    this.animalsYear = animalsYear;  }  public String getLeapMonth() {    return leapMonth;  }  public voID setLeapMonth(String leapMonth) {    this.leapMonth = leapMonth;  }  public Set<String> getSet() {    return mSet;  }  public voID setSet(Set<String> set) {    mSet = set;  }  static class VIEwHolder {    @BindVIEw(R.ID.ID_img_item_select_time_logo)    ImageVIEw mIDimgItemSelectTimelogo;    @BindVIEw(R.ID.ID_tv_item_select_time_day)    TextVIEw mIDTvItemSelectTimeDay;    VIEwHolder(VIEw vIEw) {      ButterKnife.bind(this,vIEw);    }  }}

日历工具类:

/** * 日历工具类 */public class SpecialCalendar {   private int daysOfMonth = 0;   //某月的天数   private int dayOfWeek = 0;    //具体某一天是星期几   /**   * 判断是否为闰年   * @param year   * @return   */  public boolean isLeapYear(int year) {    if (year % 100 == 0 && year % 400 == 0) {       return true;     } else if (year % 100 != 0 && year % 4 == 0) {       return true;     }     return false;   }  /**   * 得到某月有多少天数   * @param isLeapyear   * @param month   * @return   */  public int getDaysOfMonth(boolean isLeapyear,int month) {    switch (month) {     case 1:     case 3:     case 5:     case 7:     case 8:     case 10:     case 12:       daysOfMonth = 31;       break;     case 4:     case 6:     case 9:     case 11:       daysOfMonth = 30;       break;     case 2:       if (isLeapyear) {         daysOfMonth = 29;       } else {         daysOfMonth = 28;       }      }     return daysOfMonth;   }  /**   * 指定某年中的某月的第一天是星期几   * @param year   * @param month   * @return   */  public int getWeekdayOfMonth(int year,int month){    Calendar cal = Calendar.getInstance();    cal.set(year,month-1,1);     dayOfWeek = cal.get(Calendar.DAY_OF_WEEK)-1;     return dayOfWeek;   }       } 

布局文件:

<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"       androID:layout_wIDth="match_parent"       androID:layout_height="match_parent"       androID:orIEntation="vertical">  <include    layout="@layout/layout_public_finish_menu"    />  <linearLayout    androID:layout_wIDth="match_parent"    androID:layout_height="40dp"    androID:background="@color/bg_home_gone_menu"    androID:gravity="center"    androID:orIEntation="horizontal"    >    <ImageVIEw      androID:ID="@+ID/ID_img_select_time_less"      androID:layout_wIDth="wrap_content"      androID:layout_height="match_parent"      androID:layout_weight="1"      androID:padding="5dp"      androID:src="@mipmap/ic_sd_time_less"      androID:background="@drawable/selector_public_btn_bg"      />    <TextVIEw      androID:ID="@+ID/ID_tv_select_time_show"      androID:layout_wIDth="wrap_content"      androID:layout_height="wrap_content"      androID:layout_weight="4"      androID:gravity="center"      androID:text="年月"      androID:textcolor="@color/white"      androID:textSize="@dimen/default_big"      />    <ImageVIEw      androID:ID="@+ID/ID_img_select_time_add"      androID:layout_wIDth="wrap_content"      androID:layout_height="match_parent"      androID:layout_weight="1"      androID:padding="5dp"      androID:src="@mipmap/ic_sd_time_add"      androID:background="@drawable/selector_public_btn_bg"      />  </linearLayout>  <GrIDVIEw    androID:ID="@+ID/ID_gv_select_item"    androID:layout_wIDth="wrap_content"    androID:layout_height="wrap_content"    androID:background="@drawable/bg_rectangle_null_black_1"    androID:clickable="true"    androID:gravity="center"    androID:layout_gravity="center"    androID:clipChildren="true"    androID:ListSelector="@null"    androID:numColumns="7"    androID:padding="1dp"    androID:layout_margin="5dp"    androID:stretchMode="columnWIDth"    /></linearLayout>

Item布局

<relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"        androID:layout_wIDth="match_parent"        androID:layout_height="match_parent"        androID:background="@drawable/bg_rectangle_null_black_1">  <TextVIEw    androID:ID="@+ID/ID_tv_item_select_time_day"    androID:layout_wIDth="match_parent"    androID:layout_height="match_parent"    androID:gravity="center"    androID:text="天"    androID:textSize="@dimen/default_big"    androID:layout_margin="1dp"    androID:textStyle="bold"    />  <ImageVIEw    androID:ID="@+ID/ID_img_item_select_time_logo"    androID:layout_wIDth="5dp"    androID:layout_height="5dp"    androID:layout_margin="3dp"    androID:src="@drawable/shap_doorbell_oval_red"    androID:visibility="gone"    /></relativeLayout>

布局只供参考...可以根据需求进行修改

下面就看看简单的调用

 //传入当前的年,月..已经选中的时间(20170830) mAdapter = new Calendaradapter(mContext,year_c,month_c,currentDayStr); mIDGvSelectItem.setAdapter(mAdapter); /**   * GrIDVIEw Item的点击事件   */  private class MyGvListener implements AdapterVIEw.OnItemClickListener {    @OverrIDe    public voID onItemClick(AdapterVIEw<?> parent,VIEw vIEw,int position,long ID) {      TextVIEw mTv = (TextVIEw) vIEw.findVIEwByID(R.ID.ID_tv_item_select_time_day);      boolean isOnClick = (boolean) mTv.getTag();      if (isOnClick) {        String time = mAdapter.getItemTime(position);        Intent mIntent = getIntent();        mIntent.putExtra("fileDate",time);        setResult(AppStart.SDVA_SDTA,mIntent);        finish();        Log.i(TAG,"当前选择的时间:" + time);      }    }  } /**   * 点击事件逻辑处理   */  private class MyListener implements VIEw.OnClickListener {    @OverrIDe    public voID onClick(VIEw v) {      switch (v.getID()) {        //上一个月        case R.ID.ID_img_select_time_less:          mAdapter.lessMonth();          mHandler.sendEmptyMessage(UPDATA_TIME);          addTextTotopTextVIEw(mIDTvSelectTimeShow);          break;        //下一个月        case R.ID.ID_img_select_time_add:          mAdapter.addMonth();          mHandler.sendEmptyMessage(UPDATA_TIME);          addTextTotopTextVIEw(mIDTvSelectTimeShow);          break;      }    }  }private Set<String> dayEventCount = new HashSet<>();//设置需要显示标签的实际 mAdapter.setSet(dayEventCount);//更新  @OverrIDe  protected voID uiHandlerMessage(Message msg) {    switch (msg.what) {      case UPDATA_TIME:        mAdapter.upDataMonth();        mAdapter.notifyDataSetChanged();        break;    }  }

调用部分的代码由于是从项目中直接复制出来的..代码的前后没有什么关联性,主要是说明功能的..请根据自己的项目进行调整..

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