项目中抽离的日期选择器
每当我们在做日期选择器的时候通常是用原生的日期选择器，但是远远满足不了项目需求，那么当我们自己去写的时候困难还是有的，今天为大家分享一下自定义的日期选择器，分享交流开心你我他！
主界面布局很简单，主要介绍选择日期的点击事件。
- 1.选择日期的点击事件：
ll_selectedtime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final String[] str = new String[10];
final ChangeDatePopwindow mChangeBirthDialog = new ChangeDatePopwindow(MainActivity.this);
// mChangeBirthDialog.setDate("2017", "6", "20");
mChangeBirthDialog.showAtLocation(frameLayout, Gravity.TOP, 0, 400);
mChangeBirthDialog.setBirthdayListener(new ChangeDatePopwindow.OnBirthListener() {
@Override
public void onClick(String year, String month, String day) {
selectDate(Integer.parseInt(year), Integer.parseInt(month) - 1, Integer.parseInt(day));
}
});
}
});
- 2.自定义的popwindow （由于代码比较多这里就不详细说明了，具体可以建项目源码。） 年/月/日的监听方法都是类似的贴出其中一个：
wvYear.addChangingListener(new OnWheelChangedListener() {
@Override
public void onChanged(WheelView wheel, int oldValue, int newValue) {
// TODO Auto-generated method stub
String currentText = (String) mYearAdapter.getItemText(wheel.getCurrentItem());
selectYear = currentText;
setTextviewSize(currentText, mYearAdapter);
currentYear = currentText.substring(0, currentText.length() - 1).toString();
Log.d("currentYear==", currentYear);
setYear(currentYear);
initMonths(Integer.parseInt(month));
mMonthAdapter = new CalendarTextAdapter(context, arry_months, 0, maxTextSize, minTextSize);
wvMonth.setVisibleItems(5);
wvMonth.setViewAdapter(mMonthAdapter);
wvMonth.setCurrentItem(0);
calDays(currentYear, month);
}
});
- 3.自定义的wheelView 代码比较多有1000行代码，如果你需要用直接粘过来就可以了，不做详细描述。
滚轮wheelview的监听部分
// Scrolling listener
WheelScroller.ScrollingListener scrollingListener = new WheelScroller.ScrollingListener() {
@Override
public void onStarted() {
isScrollingPerformed = true;
notifyScrollingListenersAboutStart();
}
@Override
public void onScroll(int distance) {
doScroll(distance);
int height = getHeight();
if (scrollingOffset > height) {
scrollingOffset = height;
scroller.stopScrolling();
} else if (scrollingOffset < -height) {
scrollingOffset = -height;
scroller.stopScrolling();
}
}
@Override
public void onFinished() {
if (isScrollingPerformed) {
notifyScrollingListenersAboutEnd();
isScrollingPerformed = false;
}
scrollingOffset = 0;
invalidate();
}
@Override
public void onJustify() {
if (Math.abs(scrollingOffset) > WheelScroller.MIN_DELTA_FOR_SCROLLING) {
scroller.scroll(scrollingOffset, 0);
}
}
};
- 4.项目中用到的适配器，继承关系比较复杂，希望读者好好学习理解啦。在wheelview里面主要用到的是CalendarTextAdapter，继承自AbstractWheelTextAdapter1，贴出部分代码，代码比较多，望读者好好体会了。
class CalendarTextAdapter extends AbstractWheelTextAdapter1 {
ArrayList<String> list;
protected CalendarTextAdapter(Context context, ArrayList<String> list, int currentItem, int maxsize, int minsize) {
super(context, R.layout.item_birth_year, NO_RESOURCE, currentItem, maxsize, minsize);
this.list = list;
setItemTextResource(R.id.tempValue);
}
@Override
public View getItem(int index, View cachedView, ViewGroup parent) {
View view = super.getItem(index, cachedView, parent);
return view;
}
@Override
public int getItemsCount() {
return list.size();
}
@Override
protected CharSequence getItemText(int index) {
return list.get(index) + "";
}
}
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