参照美团app下拉式的二级列表菜单，公司项目中也有这种菜单的需求
1，结构分析
首先，我们给出这个下来菜单需要的组建。我们用线框图来分析。
1）如上图所示，最外围的是一个Activity，顶部包含了一个View的容器，这个容器主要是装载ToggleButton来实现诸如美团里面的“美食，全城，理我最近，刷选”这一行。这一行一点就会弹出对应的下来菜单。
2）下拉菜单是如何实现的呢？，这里我们利用了PopupWindow来实现这一弹出式窗口。然后我们在弹出式窗口里面再定义我们的下来列表项，是单列还是二级菜单，都是由里面来定。
3）不同的菜单，需要一级或者需要二级，在这里根据我的需求而变动。我们在PopupWindow上面加一个自定义的LeftView，或者是MiddleView，RightView。
主要是一个ToggleButton，你弹出一个窗口，你就定制一个窗口。
3）视图里面嵌入ListView，就形成了列表项。
2，项目结构
本项目的项目结构如图所示：
1） Adapter。适配器，主要是为ListView提供数据适配的。
2）MainActivity。主活动页面。
3）ExpandTabView。本项目的核心类，它包含ToggleButton容器和PopupWindow，是控制弹出窗口的核心类。
4）ViewLeft,ViewMiddle,ViewRight。是弹出里面嵌套的类，实现不同的列表菜单。
先分析布局文件
选择器，用于点击不同区域之后改变颜色。
几个重要布局
主要布局文件
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.view.ExpandTabView
android:id="@+id/expandtab_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</RelativeLayout>顶部按钮布局 ，背景设置为选择器
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/expand_tab_item_height"
android:textColor="@color/black"
android:gravity="center_vertical"
android:paddingLeft="10dp"
android:textSize="17sp"
android:background="@drawable/choose_eara_item_selector" >
</TextView>顶部ToggleButton，有弹出菜单和默认两种状态
<?xml version="1.0" encoding="utf-8"?>
<ToggleButton xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:text="ToggleButton"
android:textOff="@null"
android:textOn="@null"
android:background="@drawable/expand_tab_selector"
android:singleLine="true"
android:textColor="@color/black">
</ToggleButton>expand_tab_selector.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:Android="http://schemas.android.com/apk/res/android">
<item Android:drawable="@drawable/choosebar_press_down" Android:state_pressed="true"/>
<item Android:drawable="@drawable/choosebar_press_up" Android:state_checked="true"/>
<!-- focused -->
<item Android:drawable="@drawable/choosebar_down"/>
<!-- default -->
</selector>view_distance.xml,单列菜单布局
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="@drawable/choosearea_bg_left" >
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:cacheColorHint="@color/no_color"
android:divider="#dcdcdc"
android:dividerHeight="1px"
android:paddingLeft="4dp"
android:paddingRight="4dp" >
</ListView>
</merge>注意这里的android:cacheColorHint属性
ListView是常用的显示控件，默认背景是和系统窗口一样的透明色，如果给ListView加上背景图片，或者背景颜色时，滚动时listView会黑掉，
原因是，滚动时，列表里面的view重绘时，用的依旧是系统默认的透明色，颜色值为#FF191919，
要改变这种情况，只需要调用listView的setCacheColorHint(0)，颜色值设置为0
或者xml文件中listView的属性 Android:cacheColorHint="#00000000"即可，
滚动时，重绘View的时候就不会有背景颜色。
<merge />标签用于减少View树的层次来优化Android的布局。
Merge了解更多，可参考:
Android 性能优化 四 布局优化merge标签的使用
Re-using Layouts with <include/>
Android Layout Tricks #2: Reusing layouts
include与merge标签结合使用例子
Android Layout Tricks #3: Optimize by merging
《Android应用性能优化》 第8章 图形
性能优化之布局优化
Merge源码
Android抽象布局——include、merge 、ViewStub
更多优化相关的文章详见：《 Android 基础学习文章汇总》 第三部分 性能优化
view_regoin.xml 双列菜单布局文件
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/expand_tab_eara_height"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:background="@drawable/choosearea_bg_mid"
android:orientation="horizontal" >
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:cacheColorHint="@color/no_color"
android:paddingLeft="4dp"
android:layout_weight="1"
android:scrollbars="none"
android:dividerHeight="1px"
android:divider="#dcdcdc"
android:background="@color/white" >
</ListView>
<ListView
android:id="@+id/listView2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:cacheColorHint="@color/no_color"
android:paddingRight="4dp"
android:layout_weight="1"
android:divider="@null"
android:background="@color/choose_eara_item_press_color" >
</ListView>
</merge>接下来看看ExpandTabView.java
package com.example.view;
import java.util.ArrayList;
import com.example.expandtabview.R;
import android.app.Activity;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.PopupWindow.OnDismissListener;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.ToggleButton;
/**
* 菜单控件头部，封装了下拉动画，动态生成头部按钮个数
*
* @author yueyueniao
*/
public class ExpandTabView extends LinearLayout implements OnDismissListener {
private ToggleButton selectedButton;
private ArrayList<String> mTextArray = new ArrayList<String>();//用于保存字符串的数组
private ArrayList<RelativeLayout> mViewArray = new ArrayList<RelativeLayout>();//用于保存RelativeLayout的数组
private ArrayList<ToggleButton> mToggleButton = new ArrayList<ToggleButton>();//保存顶部可变按钮
private Context mContext;//上下文环境
private final int SMALL = 0;
private int displayWidth;
private int displayHeight;
private PopupWindow popupWindow;
private int selectPosition;
public ExpandTabView(Context context) {
super(context);
init(context);
}
public ExpandTabView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
/**
* 根据选择的位置设置tabitem显示的值
*/
public void setTitle(String valueText, int position) {
if (position < mToggleButton.size()) {
mToggleButton.get(position).setText(valueText);
}
}
public void setTitle(String title){
}
/**
* 根据选择的位置获取tabitem显示的值
*/
public String getTitle(int position) {
if (position < mToggleButton.size() && mToggleButton.get(position).getText() != null) {
return mToggleButton.get(position).getText().toString();
}
return "";
}
/**
* 设置tabitem的个数和初始值
*/
public void setValue(ArrayList<String> textArray, ArrayList<View> viewArray) {
if (mContext == null) {
return;
}
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mTextArray = textArray;
for (int i = 0; i < viewArray.size(); i++) {
final RelativeLayout r = new RelativeLayout(mContext);
int maxHeight = (int) (displayHeight * 0.7);
//参数指定了子 View 的宽度和高度
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, maxHeight);
rl.leftMargin = 10;
rl.rightMargin = 10;
//Adds a child view with the specified layout parameters
r.addView(viewArray.get(i), rl);
mViewArray.add(r);
r.setTag(SMALL);
//添加ToggleButton
ToggleButton tButton = (ToggleButton) inflater.inflate(R.layout.toggle_button, this, false);
addView(tButton);
View line = new TextView(mContext);
line.setBackgroundResource(R.drawable.choosebar_line);
if (i < viewArray.size() - 1) {
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(2, LinearLayout.LayoutParams.MATCH_PARENT);
addView(line, lp);
}
mToggleButton.add(tButton);
tButton.setTag(i);
tButton.setText(mTextArray.get(i));
r.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
onPressBack();
}
});
r.setBackgroundColor(mContext.getResources().getColor(R.color.popup_main_background));
tButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
// initPopupWindow();
ToggleButton tButton = (ToggleButton) view;
if (selectedButton != null && selectedButton != tButton) {
selectedButton.setChecked(false);
}
selectedButton = tButton;
selectPosition = (Integer) selectedButton.getTag();
//开始弹出菜单
startAnimation();
if (mOnButtonClickListener != null && tButton.isChecked()) {
mOnButtonClickListener.onClick(selectPosition);
}
}
});
}
}
private void startAnimation() {
//初次点击，生成popWindow
if (popupWindow == null) {
popupWindow = new PopupWindow(mViewArray.get(selectPosition), displayWidth, displayHeight);
popupWindow.setAnimationStyle(R.style.PopupWindowAnimation);
popupWindow.setFocusable(false);
popupWindow.setOutsideTouchable(true);
}
//如果已经check
if (selectedButton.isChecked()) {
if (!popupWindow.isShowing()) {
//如果popupWindow没有打开，则打开popupwindow
showPopup(selectPosition);
} else {
//如果popupWindow打开,关闭menu
popupWindow.setOnDismissListener(this);
popupWindow.dismiss();
hideView();
}
}
//如果没有checked
else {
if (popupWindow.isShowing()) {
popupWindow.dismiss();
hideView();
}
}
}
private void showPopup(int position) {
View tView = mViewArray.get(selectPosition).getChildAt(0);
if (tView instanceof ViewBaseAction) {
ViewBaseAction f = (ViewBaseAction) tView;
f.show();
}
if (popupWindow.getContentView() != mViewArray.get(position)) {
popupWindow.setContentView(mViewArray.get(position));
}
popupWindow.showAsDropDown(this, 0, 0);
}
/**
* 如果菜单成展开状态，则让菜单收回去
*/
public boolean onPressBack() {
if (popupWindow != null && popupWindow.isShowing()) {
popupWindow.dismiss();
hideView();
if (selectedButton != null) {
selectedButton.setChecked(false);
}
return true;
} else {
return false;
}
}
private void hideView() {
View tView = mViewArray.get(selectPosition).getChildAt(0);
if (tView instanceof ViewBaseAction) {
ViewBaseAction f = (ViewBaseAction) tView;
f.hide();
}
}
private void init(Context context) {
mContext = context;
displayWidth = ((Activity) mContext).getWindowManager().getDefaultDisplay().getWidth();
displayHeight = ((Activity) mContext).getWindowManager().getDefaultDisplay().getHeight();
setOrientation(LinearLayout.HORIZONTAL);
}
@Override
public void onDismiss() {
showPopup(selectPosition);
popupWindow.setOnDismissListener(null);
}
private OnButtonClickListener mOnButtonClickListener;
/**
* 设置tabitem的点击监听事件
*/
public void setOnButtonClickListener(OnButtonClickListener l) {
mOnButtonClickListener = l;
}
/**
* 自定义tabitem点击回调接口
*/
public interface OnButtonClickListener {
public void onClick(int selectPosition);
}
}ViewBaseAction 接口
package com.example.view;
public interface ViewBaseAction {
/**
* 菜单隐藏操作
*/
public void hide();
/**
* 菜单显示操作
*/
public void show();
}代码动态实现单列左侧菜单 ViewLeft.java
package com.example.view;
import com.example.adapter.TextAdapter;
import com.example.expandtabview.R;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Toast;
public class ViewLeft extends RelativeLayout implements ViewBaseAction{
private ListView mListView;
private final String[] items = new String[] { "item1", "item2", "item3", "item4", "item5", "item6" };//显示字段
private final String[] itemsVaule = new String[] { "1", "2", "3", "4", "5", "6" };//隐藏id
private OnSelectListener mOnSelectListener;
private TextAdapter adapter;
private String mDistance;
private String showText = "item1";
private Context mContext;
public String getShowText() {
return showText;
}
public ViewLeft(Context context) {
super(context);
init(context);
}
public ViewLeft(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context);
}
public ViewLeft(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
private void init(Context context) {
mContext = context;
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.view_distance, this, true);
setBackgroundDrawable(getResources().getDrawable(R.drawable.choosearea_bg_mid));
mListView = (ListView) findViewById(R.id.listView);
//设置适配器
adapter = new TextAdapter(context, items, R.drawable.choose_item_right, R.drawable.choose_eara_item_selector);
//设置列表字体大小
adapter.setTextSize(17);
if (mDistance != null) {
for (int i = 0; i < itemsVaule.length; i++) {
if (itemsVaule[i].equals(mDistance)) {
// 设置选中的position,但不通知刷新
adapter.setSelectedPositionNoNotify(i);
showText = items[i];
break;
}
}
}
mListView.setAdapter(adapter);
adapter.setOnItemClickListener(new TextAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
if (mOnSelectListener != null) {
showText = items[position];
mOnSelectListener.getValue(itemsVaule[position], items[position]);
}
}
});
}
public void setOnSelectListener(OnSelectListener onSelectListener) {
mOnSelectListener = onSelectListener;
}
public interface OnSelectListener {
public void getValue(String distance, String showText);
}
@Override
public void hide() {
}
@Override
public void show() {
}
}实现双列中间菜单，ViewMiddle.java
package com.example.view;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import android.content.Context;
import android.graphics.Region;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ListView;
import com.example.adapter.TextAdapter;
import com.example.expandtabview.R;
public class ViewMiddle extends LinearLayout implements ViewBaseAction {
private ListView regionListView;
private ListView plateListView;
private ArrayList<String> groups = new ArrayList<String>();
private LinkedList<String> childrenItem = new LinkedList<String>();
private SparseArray<LinkedList<String>> children = new SparseArray<LinkedList<String>>();
private TextAdapter plateListViewAdapter;
private TextAdapter earaListViewAdapter;
private OnSelectListener mOnSelectListener;
private int tEaraPosition = 0;
private int tBlockPosition = 0;
private String showString = "不限";
public ViewMiddle(Context context) {
super(context);
init(context);
}
public ViewMiddle(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public void updateShowText(String showArea, String showBlock) {
if (showArea == null || showBlock == null) {
return;
}
for (int i = 0; i < groups.size(); i++) {
if (groups.get(i).equals(showArea)) {
earaListViewAdapter.setSelectedPosition(i);
childrenItem.clear();//Removes all elements from this LinkedList, leaving it empty.
if (i < children.size()) {
childrenItem.addAll(children.get(i));
}
tEaraPosition = i;
break;
}
}
for (int j = 0; j < childrenItem.size(); j++) {
if (childrenItem.get(j).replace("不限", "").equals(showBlock.trim())) {
plateListViewAdapter.setSelectedPosition(j);
tBlockPosition = j;
break;
}
}
setDefaultSelect();
}
private void init(Context context) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.view_region, this, true);
regionListView = (ListView) findViewById(R.id.listView);
plateListView = (ListView) findViewById(R.id.listView2);
setBackgroundDrawable(getResources().getDrawable(
R.drawable.choosearea_bg_left));
//左边父菜单有10个选项，右边子菜单有15个选项
for(int i=0;i<10;i++){
groups.add(i+"行");
LinkedList<String> tItem = new LinkedList<String>();
for(int j=0;j<15;j++){
tItem.add(i+"行"+j+"列");
}
children.put(i, tItem);
}
earaListViewAdapter = new TextAdapter(context, groups,
R.drawable.choose_item_selected,
R.drawable.choose_eara_item_selector);
earaListViewAdapter.setTextSize(17);
earaListViewAdapter.setSelectedPositionNoNotify(tEaraPosition);
regionListView.setAdapter(earaListViewAdapter);
earaListViewAdapter
.setOnItemClickListener(new TextAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
if (position < children.size()) {
childrenItem.clear();
childrenItem.addAll(children.get(position));
plateListViewAdapter.notifyDataSetChanged();
}
}
});
if (tEaraPosition < children.size())
childrenItem.addAll(children.get(tEaraPosition));
plateListViewAdapter = new TextAdapter(context, childrenItem,
R.drawable.choose_item_right,
R.drawable.choose_plate_item_selector);
plateListViewAdapter.setTextSize(15);
plateListViewAdapter.setSelectedPositionNoNotify(tBlockPosition);
plateListView.setAdapter(plateListViewAdapter);
//点击事件
plateListViewAdapter
.setOnItemClickListener(new TextAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, final int position) {
showString = childrenItem.get(position);
if (mOnSelectListener != null) {
mOnSelectListener.getValue(showString);
}
}
});
if (tBlockPosition < childrenItem.size())
showString = childrenItem.get(tBlockPosition);
if (showString.contains("不限")) {
showString = showString.replace("不限", "");
}
setDefaultSelect();
}
public void setDefaultSelect() {
regionListView.setSelection(tEaraPosition);
plateListView.setSelection(tBlockPosition);
}
public String getShowText() {
return showString;
}
public void setOnSelectListener(OnSelectListener onSelectListener) {
mOnSelectListener = onSelectListener;
}
public interface OnSelectListener {
public void getValue(String showText);
}
@Override
public void hide() {
// TODO Auto-generated method stub
}
@Override
public void show() {
// TODO Auto-generated method stub
}
}右布局代码跟左布局类似
适配器
package com.example.adapter;
import java.util.List;
import com.example.expandtabview.R;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class TextAdapter extends ArrayAdapter<String> {
private Context mContext;
private List<String> mListData;
private String[] mArrayData;
private int selectedPos = -1;
private String selectedText = "";
private int normalDrawbleId;
private Drawable selectedDrawble;
private float textSize;
private OnClickListener onClickListener;
private OnItemClickListener mOnItemClickListener;
//sId,nId为图片id,mListData为列表内容
public TextAdapter(Context context, List<String> listData, int sId, int nId) {
super(context, R.string.no_data, listData);
mContext = context;
mListData = listData;
selectedDrawble = mContext.getResources().getDrawable(sId);
normalDrawbleId = nId;
init();
}
private void init() {
onClickListener = new OnClickListener() {
@Override
public void onClick(View view) {
//得到Tag,根据Tag得到位置
selectedPos = (Integer) view.getTag();
setSelectedPosition(selectedPos);
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(view, selectedPos);
}
}
};
}
public TextAdapter(Context context, String[] arrayData, int sId, int nId) {
super(context, R.string.no_data, arrayData);
mContext = context;
mArrayData = arrayData;
selectedDrawble = mContext.getResources().getDrawable(sId);
normalDrawbleId = nId;
init();
}
/**
* 设置选中的position,并通知列表刷新
*/
public void setSelectedPosition(int pos) {
if (mListData != null && pos < mListData.size()) {
selectedPos = pos;
selectedText = mListData.get(pos);
notifyDataSetChanged();
} else if (mArrayData != null && pos < mArrayData.length) {
selectedPos = pos;
selectedText = mArrayData[pos];
notifyDataSetChanged();
}
}
/**
* 设置选中的position,但不通知刷新
*/
public void setSelectedPositionNoNotify(int pos) {
selectedPos = pos;
if (mListData != null && pos < mListData.size()) {
selectedText = mListData.get(pos);
} else if (mArrayData != null && pos < mArrayData.length) {
selectedText = mArrayData[pos];
}
}
/**
* 获取选中的position
*/
public int getSelectedPosition() {
if (mArrayData != null && selectedPos < mArrayData.length) {
return selectedPos;
}
if (mListData != null && selectedPos < mListData.size()) {
return selectedPos;
}
return -1;
}
/**
* 设置列表字体大小
*/
public void setTextSize(float tSize) {
textSize = tSize;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView view;
if (convertView == null) {
view = (TextView) LayoutInflater.from(mContext).inflate(R.layout.choose_item, parent, false);
} else {
view = (TextView) convertView;
}
//
view.setTag(position);
String mString = "";
if (mListData != null) {
if (position < mListData.size()) {
mString = mListData.get(position);
}
} else if (mArrayData != null) {
if (position < mArrayData.length) {
mString = mArrayData[position];
}
}
if (mString.contains("不限"))
view.setText("不限");
else
view.setText(mString);
view.setTextSize(TypedValue.COMPLEX_UNIT_SP,textSize);
if (selectedText != null && selectedText.equals(mString)) {
view.setBackgroundDrawable(selectedDrawble);//设置选中的背景图片
} else {
view.setBackgroundDrawable(mContext.getResources().getDrawable(normalDrawbleId));//设置未选中状态背景图片
}
view.setPadding(20, 0, 0, 0);
view.setOnClickListener(onClickListener);
return view;
}
public void setOnItemClickListener(OnItemClickListener l) {
mOnItemClickListener = l;
}
/**
* 重新定义菜单选项单击接口
*/
public interface OnItemClickListener {
public void onItemClick(View view, int position);
}
}MainActivity.java
package com.example.expandtabview;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import com.example.view.ExpandTabView;
import com.example.view.ViewLeft;
import com.example.view.ViewMiddle;
import com.example.view.ViewRight;
public class MainActivity extends Activity {
private ExpandTabView expandTabView;
private ArrayList<View> mViewArray = new ArrayList<View>();
private ViewLeft viewLeft;
private ViewMiddle viewMiddle;
private ViewRight viewRight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initVaule();
initListener();
}
private void initView() {
expandTabView = (ExpandTabView) findViewById(R.id.expandtab_view);
viewLeft = new ViewLeft(this);
viewMiddle = new ViewMiddle(this);
viewRight = new ViewRight(this);
}
private void initVaule() {
mViewArray.add(viewLeft);
mViewArray.add(viewMiddle);
mViewArray.add(viewRight);
ArrayList<String> mTextArray = new ArrayList<String>();
mTextArray.add("距离");
mTextArray.add("区域");
mTextArray.add("距离");
expandTabView.setValue(mTextArray, mViewArray);
expandTabView.setTitle(viewLeft.getShowText(), 0);
expandTabView.setTitle(viewMiddle.getShowText(), 1);
expandTabView.setTitle(viewRight.getShowText(), 2);
}
private void initListener() {
viewLeft.setOnSelectListener(new ViewLeft.OnSelectListener() {
@Override
public void getValue(String distance, String showText) {
onRefresh(viewLeft, showText);
}
});
viewMiddle.setOnSelectListener(new ViewMiddle.OnSelectListener() {
@Override
public void getValue(String showText) {
onRefresh(viewMiddle,showText);
}
});
viewRight.setOnSelectListener(new ViewRight.OnSelectListener() {
@Override
public void getValue(String distance, String showText) {
onRefresh(viewRight, showText);
}
});
}
private void onRefresh(View view, String showText) {
expandTabView.onPressBack();
int position = getPositon(view);
if (position >= 0 && !expandTabView.getTitle(position).equals(showText)) {
expandTabView.setTitle(showText, position);
}
Toast.makeText(MainActivity.this, showText, Toast.LENGTH_SHORT).show();
}
private int getPositon(View tView) {
for (int i = 0; i < mViewArray.size(); i++) {
if (mViewArray.get(i) == tView) {
return i;
}
}
return -1;
}
@Override
public void onBackPressed() {
if (!expandTabView.onPressBack()) {
finish();
}
}
}
Android 小女子
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