Android自定义日历滑动控件
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
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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
<?xml version="1.0" encoding="utf-8"?>
2. 新建类LRCalendarView继承LinearLayout并添加布局
public class LRCalendarView extends LinearLayout {
private Context context;
private ImageView ivLeft, ivRight;
private RecyclerView mRecyclerView;
private GalleryAdapter mAdapter;
private List| 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);
}
} | 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
/** * 初始化每个月的数据 */ private List| 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); } |
/** * @param flag 0：正常初始化日期 1：为左右点击的初始化日期 */ private List| init(int year, int month, int day, int flag) { if (flag != 0) { day = 1; } setSelectYearMonth(year, month, day); List | 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; } |
/**
* 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
class GalleryAdapter extends RecyclerView.Adapter{ private LayoutInflater mInflater; private List mDatas; /** * 用来记录点击的item */ private int selectedPos; private boolean isClick; public GalleryAdapter(Context context, List | data) { mInflater = LayoutInflater.from(context); this.mDatas = data; } public void setList(List | 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
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);
}
});
/** * 左点击，日历向后翻页 */ public List| 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 | 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
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
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创新互联。
新闻标题：Android自定义日历滑动控件
新闻来源：http://azwzsj.com/article/gedcog.html
