时间悬浮
带时间戳的列表,要求时间悬浮顶部,动态替换顶部时间如下图,如下图,
布局实现
多布局实现,时间悬浮为一个布局,数据相关内容为一个布局,这里推荐一个Adapter依赖库BRVAH
public InformationAdapter(@Nullable List<Information> data) {
super(data);
addItemType(ITEM_STICK, R.layout.item_stock_sticky_head);
addItemType(ITEM_DATA, R.layout.item_information);
}
根据返回的ItemViewType来加载不同的布局,动态设置时间布局的显示
@Override
protected void convert(BaseViewHolder helper, Information item) {
switch (helper.getItemViewType()) {
case 1:
helper.setVisible(R.id.tv_stock_name, true);
helper.setText(R.id.tv_stock_name, item.pinnedHeaderName);
break;
case 2:
int timeInt = item.getArticle_time();
String s = String.valueOf(timeInt);
String time = AppUtils.getStrTime(s);
helper.setText(R.id.btn_time, time);
Log.d("haha", "convert: 时间 : " + time);
Log.d("haha", "convert: " + item.getArticle_title());
helper.setText(R.id.txt_title, item.getArticle_title()).addOnClickListener(R.id.txt_title);
helper.setText(R.id.txt_content, item.getArticle_content());
helper.setText(R.id.txt_zan, " " + item.getArticle_like_count()).addOnClickListener(R.id.txt_zan);
helper.setText(R.id.txt_kankong, " " + item.getArticle_dislike_count());
break;
}
}
加载数据时根据时间比较,判断当前数据是头部数据还是普通数据,添加进集合中
case STATE_REFREH:
timeString = "月";
mInformationAdapter.getData().clear();
for (Information information : informationList) {
String s = transForDate(information.getArticle_time());
if (!s.equals(timeString)) {
newList.add(new Information(Information.ITEM_STICK, s));
timeString = s;
}
Log.d(TAG, "showData: " + s);
information.setItemType(Information.ITEM_DATA);
newList.add(information);
}
mInformationAdapter.addData(newList);
break;
注意数据的判断,正确进行头部数据的添加。
头部布局的创建
mHeaderItemDecoration = new PinnedHeaderItemDecoration.Builder(Information.ITEM_STICK).create();
mRecyclerCoinCircle.addItemDecoration(mHeaderItemDecoration);
时间戳转换
public static String transForDate(Integer ms) {
String str = "";
if (ms != null) {
long msl = (long) ms * 1000;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
if (ms != null) {
try {
str = sdf.format(msl);
} catch (Exception e) {
e.printStackTrace();
}
}
}
String[] split = str.split("-");
StringBuffer stringBuffer = new StringBuffer();
stringBuffer.append(split[1] + "月").append(split[2] + "日");
return stringBuffer.toString();
}
将时间转化为xx月xx日的格式
文本展开与收起
默认情况下,最多只显示四行文本如下
点击之后,展开所有文本
具体实现如下:
TextView textView = (TextView) adapter.getViewByPosition(mRecyclerCoinCircle, position, R.id.txt_content);
if (textView != null) {
if (isClick.containsKey(position)) {
if (isClick.get(position)) {
textView.setMaxLines(4);
isClick.put(position, false);
} else {
textView.setMaxLines(1000);
isClick.put(position, true);
}
} else {
textView.setMaxLines(1000);
isClick.put(position, true);
}
}
下拉刷新,上拉加载自定义布局
设置下拉刷新,下拉加载的布局
mEasyLayout.setRefreshHeadView(new RefreshHeaderView(this));
mEasyLayout.setLoadMoreView(new LoadMoreView(this));
具体实现可参考Demo,或者依赖库文档
刷新之后回调
mEasyLayout.addEasyEvent(new EasyRefreshLayout.EasyEvent() {
@Override
public void onRefreshing() {
page =1;
state = STATE_REFREH;
getReFreshData();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mEasyLayout.refreshComplete();
}
}, 1000);
}
@Override
public void onLoadMore() {
page++;
state = STATE_MORE;
getInformationData();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mEasyLayout.loadMoreComplete();
}
}, 1000);
}
});
下拉加载,上拉刷新布局如图,具体可运行demo查看
爬过的坑
在头部悬浮,结合上拉刷新下拉加载过程中,遇到过上拉加载,导致头部悬浮布局错位,先前采用
SmartRefreshLayout,由于SmartRefreshLayout上拉加载会将布局向上顶,导致悬浮布局错误,调试无果后,采用EasyRefreshLayout。
总结
头部悬浮的上拉加载,下拉刷新的列表主要实现采用Adapter依赖库BRVAH及其推荐相关库EasyRefreshLayout和RecyclerView粘性标签库。其他更多用法,可以自行访问相关库学习。
最后给出DEMO.