本文实例为大家分享了Android日历控件的实现代码，供大家参考，具体内容如下

1、效果图：

2、弹窗Dialog：SelectDateDialog：

public class SelectDateDialog {

 private static final String TAG = "SelectDateDialog";

 private Dialog dialog;
 private TextView dateText;
 private int selectYear, selectMonth;
 private AppCompatActivity mContext;
 private DateAdapter adapter;
 private List<String> selWeekList = new ArrayList<>();
 private List<DateBean> list = new ArrayList<>();

 public SelectDateDialog builder(AppCompatActivity mContext, int year, int month) {
  this.mContext = mContext;
  this.selectYear = year;
  this.selectMonth = month;
  // 获取Dialog布局
  View view = LayoutInflater.from(mContext).inflate(R.layout.dialog_date, null);

  // 定义Dialog布局和参数
  dialog = new Dialog(mContext, R.style.AlertDialogStyle);
  dialog.setCanceledOnTouchOutside(false);//点击外部是否取消
  dialog.setCancelable(false);
  dialog.setContentView(view);
  Window window = dialog.getWindow();
  WindowManager.LayoutParams params = window.getAttributes();
  params.width = (ScreenUtils.getScreenWidth(mContext));
//  params.height = (int) (ScreenUtils.getScreenHeight(mContext) * 0.5);
  window.setAttributes(params);
  window.setGravity(Gravity.BOTTOM);

  RecyclerView recycler = view.findViewById(R.id.recycler_select_date);
  dateText = view.findViewById(R.id.date_text);
  dateText.setText(year + "年" + month + "月");
  //下个月
  view.findViewById(R.id.next_month).setOnClickListener(view13 -> {
   if (selectMonth > 11) {
    selectYear = selectYear + 1;
    selectMonth = 1;
   } else {
    selectMonth++;
   }
   showNewData(selectYear, selectMonth);
  });
  //上个月
  view.findViewById(R.id.last_month).setOnClickListener(view14 -> {
   if (selectMonth < 2) {
    selectYear = selectYear - 1;
    selectMonth = 12;
   } else {
    selectMonth--;
   }
   showNewData(selectYear, selectMonth);
  });

  list = DataUtils.getCalendar(year, month);
  adapter = new DateAdapter(mContext, list);
  GridLayoutManager manager = new GridLayoutManager(mContext, 7);
  recycler.setLayoutManager(manager);
  recycler.setAdapter(adapter);
  //取消
  view.findViewById(R.id.middle_cancel).setOnClickListener(view1 -> {
   dialog.dismiss();
  });
  //确定
  view.findViewById(R.id.middle_determine).setOnClickListener(view1 -> {
   initSelect();
  });
  //设置选中当天
  adapter.setNowDay(year, month, DataUtils.getLastMonth(year, month));
  return this;
 }

 private void showNewData(int year, int month) {
  list = DataUtils.getCalendar(year, month);
  //更新月数据
  adapter.setList(list);
  adapter.setNowDay(year , month, DataUtils.getLastMonth(year, month));
  dateText.setText(year + "年" + month + "月");
 }

 /**
  * 获取选中的日期
  */
 private void initSelect() {
  selWeekList.clear();
  for (int i = 0; i < list.size(); i++) {
   if (list.get(i).isFlag()) {
    //记录数量
    selWeekList.add(selectYear + "-" + selectMonth + "-" + list.get(i).getWeek());
   }
  }
  Log.e(TAG, "initSelect: "+ list.size());
  Log.e(TAG, "initSelect: "+ selWeekList.size());

  if (selWeekList.size() == 0) {
   Toast.makeText(mContext, "未选则日期", Toast.LENGTH_SHORT).show();
   return;
  }
  dialog.dismiss();
  listener.date(DataUtils.returnList(selWeekList));
  Log.e(TAG, "initSelect: " + DataUtils.returnList(selWeekList));
 }

 public void show() {
  if (dialog != null && (!dialog.isShowing())) {
   dialog.show();
  }
 }

 private OnDateListener listener;

 public SelectDateDialog setListener(OnDateListener listener) {
  this.listener = listener;
  return this;
 }

 public interface OnDateListener {

  void date(String selectDate);
 }

}