android下拉菜单刷新,Android开发之头部悬浮的上拉加载，下拉刷新的列表
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，
image.png
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BRVAHpublic InformationAdapter(@Nullable List 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@Overrideprotected 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
image.png
点击之后，展开所有文本
image.png
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
image.png
image.png
作者：木子饼干
链接：https://www.jianshu.com/p/223692b84f2d