Listview多tab上滑悬浮

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/white_color" >

<com.example.toolbox.upFloat.PullToRefreshListView
xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/up_float_listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:cacheColorHint="@color/white_color"
android:divider="@color/transpant"
android:dividerHeight="0dip"
android:fadingEdge="none"
android:fastScrollEnabled="false"
android:listSelector="@color/transpant"
android:smoothScrollbar="true"
android:visibility="visible"
ptr:ptrHeaderTextColor="@color/color_333333"
ptr:ptrMode="both" />

<include
layout="@layout/up_float_tab_layout"
android:visibility="gone" />

</FrameLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/up_float_tab_root"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/white_color"
android:minHeight="44dip"
android:orientation="vertical" >

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="44dip"
android:minHeight="44dip"
android:orientation="horizontal" >

<TextView
android:id="@+id/up_fload_tab1"
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@drawable/show_event_detail_tab_selector"
android:gravity="center"
android:text="@string/up_float_tab1"
android:textColor="@color/show_event_detail_tab_text_selector"
android:textSize="17sp" />

<TextView
android:id="@+id/up_float_tab2"
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@drawable/show_event_detail_tab_selector"
android:gravity="center"
android:text="@string/up_float_tab2"
android:textColor="@color/show_event_detail_tab_text_selector"
android:textSize="17sp" />
</LinearLayout>

<View
android:layout_width="match_parent"
android:layout_height="@dimen/split_one_pixels"
android:background="@color/color_purple_bd6aff" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/white_color"
android:orientation="vertical" >

<ImageView
android:id="@+id/show_event_detail_bg"
android:layout_width="fill_parent"
android:layout_height="125dip"
android:contentDescription="@string/empty"
android:scaleType="fitXY"
android:src="@drawable/pic1" />

<TextView
android:id="@+id/show_event_detail_desc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="24dip"
android:layout_marginLeft="15dip"
android:layout_marginRight="15dip"
android:layout_marginTop="24dip"
android:text="@string/up_float_desc"
android:textColor="@color/color_black_333333"
android:textSize="14sp" />

<View style="@style/horizontal_gray_divider" />

<View style="@style/horizontal_gray_divider" />

</LinearLayout>

package com.example.toolbox.upFloat.activity;

import java.util.ArrayList;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

import com.example.toolbox.R;
import com.example.toolbox.upFloat.PullToRefreshBase;
import com.example.toolbox.upFloat.PullToRefreshBase.OnRefreshListener2;
import com.example.toolbox.upFloat.PullToRefreshListView;

/**
* 
* 
* @author sunyoujun
* 
*/
public class UpFloatFirstActivity extends ActionBarActivity implements OnClickListener {

public static final int TYPE_TAB_1 = 1;

public static final int TYPE_TBA_2 = 2;

private int tab2Pos = 0;
private int tab2OffsetY = 0;

private int tab1Pos = 0;
private int tab1OffsetY = 0;

private ArrayList<String> item = new ArrayList<String>();
private ArrayList<String> item1 = new ArrayList<String>();
private ArrayList<String> item2 = new ArrayList<String>();

protected PullToRefreshListView listView;

private LinearLayout titleView;

private LayoutInflater infater;

private LinearLayout titleTab;
private LinearLayout titleFloatTab;

private TextView latestTv;
private TextView latestFloatTv;

private TextView hotTv;
private TextView hotFloatTv;

private int currentType = TYPE_TAB_1;

private ArrayAdapter<String> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.up_float_first_activity);
findViews();
setViewsListener();
updateTabSelectState();
initData();
initListView();
}

private void findViews() {
listView = (PullToRefreshListView) findViewById(R.id.up_float_listview);
titleFloatTab = (LinearLayout) findViewById(R.id.up_float_tab_root);
latestFloatTv = (TextView) titleFloatTab.findViewById(R.id.up_float_tab2);
hotFloatTv = (TextView) titleFloatTab.findViewById(R.id.up_fload_tab1);

infater = LayoutInflater.from(this);
titleView = (LinearLayout) infater.inflate(R.layout.up_float_common_layout, null);

titleTab = (LinearLayout) infater.inflate(R.layout.up_float_tab_layout, null);
latestTv = (TextView) titleTab.findViewById(R.id.up_float_tab2);
hotTv = (TextView) titleTab.findViewById(R.id.up_fload_tab1);
}

private void setViewsListener() {
latestTv.setOnClickListener(this);
hotTv.setOnClickListener(this);
latestFloatTv.setOnClickListener(this);
hotFloatTv.setOnClickListener(this);
updateTabSelectState();
}

/**
* 更新tab栏选中状态
*/
private void updateTabSelectState() {
boolean isTab1 = (currentType == TYPE_TAB_1);
hotTv.setSelected(isTab1);
hotFloatTv.setSelected(isTab1);
latestTv.setSelected(!isTab1);
latestFloatTv.setSelected(!isTab1);
}

private void initData() {
for (int i = 1; i <= 50; i++) {
item1.add("tab1-- item ---" + i);
item2.add("tab2-- item ---" + i);
}
}

private void initListView() {
setListViewListener();
listViewAddHeader();
listViewLoadData();
}

private void setListViewListener() {
listView.setOnRefreshListener(new OnRefreshListener2<ListView>() {

@Override
public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
// loadNews();
}

@Override
public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
// loadOlds();
}

});

listView.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 < 2) {// 悬浮tab出现时机，listview含有三个header
titleFloatTab.setVisibility(View.GONE);
} else
titleFloatTab.setVisibility(View.VISIBLE);
;
}
});
}

private void listViewAddHeader() {
listView.getRefreshableView().addHeaderView(titleView);
listView.getRefreshableView().addHeaderView(titleTab);
}

protected void listViewLoadData() {
item.clear();
item.addAll(item1);
adapter = new ArrayAdapter<String>(this, R.layout.list_item, android.R.id.text1, item);
listView.setAdapter(adapter);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.up_fload_tab1:
switchTabtList(true);
break;
case R.id.up_float_tab2:
switchTabtList(false);
break;
default:
break;
}
}

private void switchTabtList(boolean isTab1) {
if (isTab1) {
if (currentType == TYPE_TAB_1) {
return;// 说明点击的是相同的活动列表，不用改变
} else {// tab2 switch tab1
tab2Pos = listView.getRefreshableView().getFirstVisiblePosition();
tab2OffsetY = getOffsetY();
currentType = TYPE_TAB_1;
item2.clear();
item2.addAll(item);
item.clear();
item.addAll(item1);
}
} else {
if (currentType == TYPE_TBA_2) {
return;
} else {// tab1 switch tab2
tab1Pos = listView.getRefreshableView().getFirstVisiblePosition();
tab1OffsetY = getOffsetY();
currentType = TYPE_TBA_2;
item1.clear();
item1.addAll(item);
item.clear();
item.addAll(item2);
}
}
updateTabSelectState();
relocationLastPos();
}

private int getOffsetY(){
View view = listView.getRefreshableView().getChildAt(0);
return view != null ? view.getTop() : 0;
}

/**
* 重新定位到上次的位置
*/
private void relocationLastPos() {
if (adapter != null) {
adapter.notifyDataSetChanged();
}
if (currentType == TYPE_TAB_1) {
listView.post(new Runnable() {

@Override
public void run() {
listView.getRefreshableView().setSelectionFromTop(tab1Pos, tab1OffsetY);
}
});
} else {
listView.post(new Runnable() {

@Override
public void run() {
listView.getRefreshableView().setSelectionFromTop(tab2Pos, tab2OffsetY);
}
});
}
}

}