本文实例为大家分享了Android自定义日历滑动控件的使用方法，供大家参考，具体内容如下
最近公司项目需要做这个需求，自己才疏学浅，总算能写出个大概来，遂在这里记录下来。
分析
先来分析一下：
首先，我们的需求是可以左右点击查看跳转到下一个月，中间的日历控件可以水平滚动选择日期，所以我们中间的日历控件用一个RecycleView来做，左右两位的为ImageVeiw。
LRCalendarView 总体流程：
- 编写LRCalendarView的布局R.layout.calendar_view
- 新建类LRCalendarView继承LinearLayout
- LRCalendarView添加布局R.layout.calendar_view
- 数据初始化
- 构建GalleryAdapter
- 给RecycleView设置GalleryAdapter并且给左右按钮添加点击事件
- 处理左右日历翻页逻辑
- 按需要给RecycleView添加item的点击事件
1. R.layout.calendar_view
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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#ffffff" android:padding="5dp" android:orientation="horizontal"> <ImageView android:id="@+id/iv_left" android:layout_gravity="center_vertical" android:src="@drawable/ic_launcher" android:layout_width="31dp" android:layout_height="31dp"/> <android.support.v7.widget.RecyclerView android:layout_marginLeft="5dp" android:layout_marginRight="5dp" android:id="@+id/recyclerView" android:layout_width="wrap_content" android:layout_weight="1" android:layout_height="50dp" android:layout_centerVertical="true" android:background="#ffffff" android:scrollbars="none" /> <ImageView android:id="@+id/iv_right" android:layout_gravity="center_vertical" android:src="@drawable/ic_launcher" android:layout_width="30dp" android:layout_height="30dp"/></LinearLayout> |
2. 新建类LRCalendarView继承LinearLayout并添加布局
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public class LRCalendarView extends LinearLayout { private Context context; private ImageView ivLeft, ivRight; private RecyclerView mRecyclerView; private GalleryAdapter mAdapter; private List<Cell> data = new ArrayList<>(); private int mCurrYear, mCurrMonth, mCurrDay; private int mSelYear, mSelMonth, mSelDay; //今天的日期的position private int todayPos; public LRCalendarView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); this.context = context; setupView(context); } public LRCalendarView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public LRCalendarView(Context context) { this(context, null); } /** * 初始化控件 */ private void setupView(final Context context) { View view = LayoutInflater.from(context).inflate(R.layout.calendar_view, null); this.addView(view); data = init(); mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView); ivLeft = (ImageView) findViewById(R.id.iv_left); ivRight = (ImageView) findViewById(R.id.iv_right); //设置manger LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context); linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL); mRecyclerView.setLayoutManager(linearLayoutManager); //设置adapter mAdapter = new GalleryAdapter(context, init()); mRecyclerView.setAdapter(mAdapter); }} |
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public class Cell { private String day; private String month; private int mCurrDay; private boolean isSelect; public int getmCurrDay() { return mCurrDay; } public void setmCurrDay(int mCurrDay) { this.mCurrDay = mCurrDay; } public String getDay() { return day; } public void setDay(String day) { this.day = day; } public String getMonth() { return month; } public void setMonth(String month) { this.month = month; } public boolean isSelect() { return isSelect; } public void setSelect(boolean select) { isSelect = select; }} |
接下来都是获取日期数据，可以写在一个工具类里，我直接写在LRCalendarView
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/** * 初始化每个月的数据 */ private List<Cell> init() { Calendar calendar = Calendar.getInstance(); mCurrYear = calendar.get(Calendar.YEAR); mCurrMonth = calendar.get(Calendar.MONTH); mCurrDay = calendar.get(Calendar.DATE); return init(mCurrYear, mCurrMonth, mCurrDay, 0); } |
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/** * @param flag 0：正常初始化日期 1：为左右点击的初始化日期 */ private List<Cell> init(int year, int month, int day, int flag) { if (flag != 0) { day = 1; } setSelectYearMonth(year, month, day); List<Cell> listData = new ArrayList<>(); int mMonthDays = getMonthDays(year, month); for (int i = 0; i < mMonthDays; i++) { Cell cell = new Cell(); cell.setDay((i + 1) + ""); cell.setMonth((month + 1) + "月"); if (i + 1 == day) { cell.setmCurrDay(day); todayPos = day; } listData.add(cell); } return listData; } private void setSelectYearMonth(int year, int month, int day) { mSelYear = year; mSelMonth = month; mSelDay = day;} |
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/** * 通过年份和月份 得到当月的日子 * * @param year * @param month * @return */ public int getMonthDays(int year, int month) { month++; switch (month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: return 31; case 4: case 6: case 9: case 11: return 30; case 2: if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) { return 29; } else { return 28; } default: return -1; }} |
GalleryAdapter
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class GalleryAdapter extends RecyclerView.Adapter<GalleryAdapter.ViewHolder> { private LayoutInflater mInflater; private List<Cell> mDatas; /** * 用来记录点击的item */ private int selectedPos; private boolean isClick; public GalleryAdapter(Context context, List<Cell> data) { mInflater = LayoutInflater.from(context); this.mDatas = data; } public void setList(List<Cell> data) { this.mDatas = data; isClick = false; } public static class ViewHolder extends RecyclerView.ViewHolder { public ViewHolder(View view) { super(view); tv1 = (TextView) view.findViewById(R.id.textView1); tv2 = (TextView) view.findViewById(R.id.textView2); linearLayout = (LinearLayout) view.findViewById(R.id.ll); } TextView tv1; TextView tv2; LinearLayout linearLayout; } @Override public int getItemCount() { return mDatas.size(); } /** * 创建ViewHolder */ @Override public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View view = mInflater.inflate(R.layout.cell, null); ViewHolder viewHolder = new ViewHolder(view); return viewHolder; } /** * 设置值 */ @Override public void onBindViewHolder(final ViewHolder viewHolder, final int i) { if (!isClick) { selectedPos = Integer.valueOf(mDatas.get(i).getmCurrDay()); selectedPos -= 1; } viewHolder.tv1.setText(mDatas.get(i).getDay()); viewHolder.tv2.setText(mDatas.get(i).getMonth()); if (selectedPos == i) { viewHolder.linearLayout.setSelected(true); } else { viewHolder.linearLayout.setSelected(false); } //如果设置了回调，则设置点击事件 if (mOnItemClickLitener != null) { viewHolder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { isClick = true; clearSelection(i); notifyDataSetChanged(); String date = mDatas.get(i).getMonth() + mDatas.get(i).getDay(); mOnItemClickLitener.onItemClick(viewHolder.itemView, i, date); } }); } } public void clearSelection(int pos) { selectedPos = pos; } private OnItemClickLitener mOnItemClickLitener; public interface OnItemClickLitener { void onItemClick(View view, int position, String date); } public void setOnItemClickLitener(OnItemClickLitener mOnItemClickLitener) { this.mOnItemClickLitener = mOnItemClickLitener;} |
给左右的ImageView设置点击事件
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ivLeft.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { data.clear(); data.addAll(onLeftClick(mSelYear, mSelMonth, mSelDay)); mAdapter.setList(data); mAdapter.notifyDataSetChanged(); mRecyclerView.scrollToPosition(0); } }); ivRight.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { data.clear(); data.addAll(onRightClick(mSelYear, mSelMonth, mSelDay)); mAdapter.setList(data); mAdapter.notifyDataSetChanged(); mRecyclerView.scrollToPosition(0); } }); |
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/** * 左点击，日历向后翻页 */ public List<Cell> onLeftClick(int mSelYear, int mSelMonth, int mSelDay) { int year = mSelYear; int month = mSelMonth; int day = mSelDay; if (month == 0) {//若果是1月份，则变成12月份 year = mSelYear - 1; month = 11; } else if (getMonthDays(year, month) == day) { //如果当前日期为该月最后一点，当向前推的时候，就需要改变选中的日期 month = month - 1; day = getMonthDays(year, month); } else { month = month - 1; } return init(year, month, day, 1); } /** * 右点击，日历向后翻页 */ public List<Cell> onRightClick(int mSelYear, int mSelMonth, int mSelDay) { int year = mSelYear; int month = mSelMonth; int day = mSelDay; if (month == 11) {//若果是12月份，则变成1月份 year = mSelYear + 1; month = 0; } else if (getMonthDays(year, month) == day) { //如果当前日期为该月最后一点，当向前推的时候，就需要改变选中的日期 month = month + 1; day = getMonthDays(year, month); } else { month = month + 1; } return init(year, month, day, 1);} |
给adapter设置item的点击事件
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mAdapter.setOnItemClickLitener(new GalleryAdapter.OnItemClickLitener() { @Override public void onItemClick(View view, int position, String date) { Toast.makeText(context.getApplicationContext(), date, Toast.LENGTH_SHORT).show(); } }); |
以上完成后即可在activity中使用
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<com.lzz.lzzsdk.widget.calenadrView.LRCalendarView android:id="@+id/bottom_bar" android:layout_width="match_parent" android:layout_height="wrap_content"/> |
大功告成。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/free_co/article/details/53420583
