listView顶部悬浮效果实现几种方法

1、可以采用开源框架StickyListHeadersListView，地址 https://github.com/emilsjolander/StickyListHeaders

2、可以参考博客 Android 仿美团网,大众点评购买框悬浮效果之修改版 http://blog.csdn.net/xiaanming/article/details/17761431

3、针对listview的悬浮，主要原理是两个相同的布局显示或隐藏和listview的监听接口setOnScrollListener

效果一

效果二



下面是布局代码

<span style="font-size:14px;"><?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >

<ListView
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:cacheColorHint="#00000000"
android:divider="#f2f2f2"
android:dividerHeight="1dp"
android:drawSelectorOnTop="false"
android:fadingEdge="none" />

<LinearLayout
android:id="@+id/ll_hidden_layout"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:background="#ccedc7"
android:orientation="horizontal"
android:visibility="gone" >

<TextView
android:id="@+id/tv_hidden"
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:text="悬浮部分" />
</LinearLayout>

</FrameLayout></span>

<span style="font-size:14px;">public class MainActivity extends Activity {
private ListView lv;

private LinearLayout ll_hidden_layout;

private String[] strs;
private TextView tv_hidden;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sticky);
ll_hidden_layout = (LinearLayout) findViewById(R.id.ll_hidden_layout);
tv_hidden = (TextView) findViewById(R.id.tv_hidden);

strs = new String[20];
for (int i = 0; i < 20; i++) {
strs[i] = "data-----" + (i+2);
}
lv = (ListView) findViewById(R.id.lv);
lv.addHeaderView(View.inflate(this, R.layout.stick_header, null));// 添加头部
//		lv.addHeaderView(View.inflate(this, R.layout.stick_action, null));// ListView条目中的悬浮部分
// 添加到头部

lv.setAdapter(new ArrayAdapter<String>(this, R.layout.list_item,
R.id.tv_item, strs));
lv.setOnScrollListener(new OnScrollListener() {

@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (firstVisibleItem >= 1) {
ll_hidden_layout.setVisibility(View.VISIBLE);
lv.setPadding(0, ll_hidden_layout.getMeasuredHeight(), 0, 0);
tv_hidden.setText("" + strs[firstVisibleItem-1]);
} else{
lv.setPadding(0, 0, 0, 0);
ll_hidden_layout.setVisibility(View.GONE);
}
}
});
lv.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getApplicationContext(), "pos:" + position, 0)
.show();
}
});
}

}
</span>