Android仿人人客户端（v5.7.1）——有关滑动式左侧菜单实现过程中网友的疑问解答

转载请标明出处：http://blog.csdn.net/android_ls/article/details/9410055

声明：仿人人项目，所用所有图片资源都来源于其它Android移动应用，编写本应用的目的在于学习交流，如涉及侵权请告知，我会及时换掉用到的相关图片。

      这一篇是基于前面的Android仿人人客户端（v5.7.1）——点击左侧菜单栏中的Item切换视图这篇博文，聊聊有关左侧菜单在实现过程中，我后面所做的修改。

 一、实现过程中修改的部分。

        1、在之前的左侧Item对象中，添加当前Item是否为选中项的属性，代码如下：

package com.everyone.android.entity;import java.util.ArrayList;/** * 功能描述：左侧面板Item信息 * @author android_ls * */public class LeftPanelListItem {    private int id; // 唯一标识    private String name; // 操作项名称    private int drawableId; // 指示图标 #R.drawable.ic_launcher    private boolean selected; // 当前是否为选中项    private ArrayList<LeftPanelListItem> groups;    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getDrawableId() {        return drawableId;    }    public void setDrawableId(int drawableId) {        this.drawableId = drawableId;    }    public boolean isSelected() {        return selected;    }    public void setSelected(boolean selected) {        this.selected = selected;    }    public ArrayList<LeftPanelListItem> getGroups() {        return groups;    }    public void setGroups(ArrayList<LeftPanelListItem> groups) {        this.groups = groups;    }}

       2、在LeftPanelExListViewAdapter类的

public View getChildView(int groupPosition,int childPosition,boolean isLastChild, View convertView, ViewGroup parent) {}回调方法中添加如下处理：

 if(listItem.isSelected()){            convertView.setBackgroundResource(R.drawable.menu_item_bg_sel);            viewHolder.groupName.setSelected(true);        } else {            convertView.setBackgroundResource(R.drawable.left_panel_item_selector);            viewHolder.groupName.setSelected(false);        }

     3、修改ExpandableListView的mExpandableListView.setOnChildClickListener(){}事件监听器中的处理，代码如下：

mExpandableListView.setOnChildClickListener(new OnChildClickListener() {            @Override            public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {                if (mOnSeletedListener == null) {                    return false;                }                // 去掉上一次选中的项                mListItems.get(mGroupPosition).getGroups().get(mChildPosition).setSelected(false);                                mGroupPosition = groupPosition;                mChildPosition = childPosition;                // 选中当前选择的项                mListItems.get(mGroupPosition).getGroups().get(mChildPosition).setSelected(true);                mExListViewAdapter.notifyDataSetChanged();                                mOnSeletedListener.seletedChildView(groupPosition, childPosition);                                return true;            }        });

   4、修改二级菜单的selector（left_panel_item_selector.xml）配置文件如下：

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:drawable="@drawable/menu_item_bg_sel" android:state_selected="true"/>    <item android:drawable="@drawable/menu_item_background_down" android:state_focused="true"/>    <item android:drawable="@drawable/menu_item_background_down" android:state_pressed="true"/>    <item android:drawable="@drawable/menu_item_background_up"/></selector>

   5、在每个view（新鲜事视图、消息视图和好友视图等）类中，提供获取顶部导航栏中左侧Menu组件，代码如下：

  /**     * 获取顶部左侧的menu组件     * @return     */    public LinearLayout getMenuView() {        return topMenuNavbar.llShowMenu;    }

   6、在EveryoneActivity类中，

public class EveryoneActivityextends NetworkBaseActivityimplements View.OnClickListener, onSeletedListener {}

     a.获取Menu组件并为其设置单击事件监听器

 mFreshNewsLayout.getMenuView().setOnClickListener(this);

     b.在单击事件处理器中添加如下代码：

 @Override    public void onClick(View v) {        mSlideContainer.show();    }

二、运行后的效果图

三、完整代码

    LeftPanelLayout类源码：

package com.everyone.android.ui.leftpanel;import java.util.ArrayList;import java.util.HashMap;import java.util.LinkedList;import java.util.List;import java.util.Map;import org.json.JSONException;import android.content.Context;import android.content.Intent;import android.content.res.Resources;import android.os.Handler;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.ExpandableListView;import android.widget.ExpandableListView.OnChildClickListener;import android.widget.ExpandableListView.OnGroupClickListener;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.everyone.android.R;import com.everyone.android.api.AuthTokenManager;import com.everyone.android.api.NetworkBaseActivity;import com.everyone.android.bitmap.ImageLoader;import com.everyone.android.callback.ParseCallback;import com.everyone.android.callback.ResultCallback;import com.everyone.android.entity.ImageInfo;import com.everyone.android.entity.LeftPanelListItem;import com.everyone.android.entity.UserBasicInfo;import com.everyone.android.net.AsyncBaseRequest;import com.everyone.android.net.AsyncHttpsPost;import com.everyone.android.net.DefaultThreadPool;import com.everyone.android.ui.user.PersonalHomepageActivity;import com.everyone.android.utils.Constant;import com.everyone.android.utils.DensityUtil;import com.everyone.android.utils.LogUtil;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;/** * 功能描述：仿人人主界面之左侧面板 * @author android_ls * */public class LeftPanelLayout extends FrameLayout {    /**     * LOG打印标签     */    private static final String TAG = LeftPanelLayout.class.getSimpleName();        /**     * 用户图标显示组件     */    private ImageView ivUserIcon;    /**     * 用户名称显示组件     */    private TextView tvNickname;    /**     * 可展开的ListView组件     */    private ExpandableListView mExpandableListView;    /**     * ExpandableListView组件的数据适配器     */    private LeftPanelExListViewAdapter mExListViewAdapter;    /**     * ExpandableListView组件的数据源     */    private List<LeftPanelListItem> mListItems = new ArrayList<LeftPanelListItem>();    /**     * 分组名数组     */    private String[] mGroupNames;    private onSeletedListener mOnSeletedListener;    private int mGroupPosition;    private int mChildPosition;    private NetworkBaseActivity mActivity;    private List<AsyncBaseRequest> mAsyncRequests;    private DefaultThreadPool mDefaultThreadPool;    private Handler mHandler;    private AuthTokenManager mAuthTokenManager;        protected ImageLoader mImageLoader;        public LeftPanelLayout(NetworkBaseActivity activity) {        super(activity);        mActivity = activity;        this.mAsyncRequests = activity.getAsyncRequests();        this.mDefaultThreadPool = activity.getDefaultThreadPool();        this.mHandler = activity.getHandler();        this.mAuthTokenManager = activity.getAuthTokenManager();        mImageLoader = new ImageLoader(activity);                setupViews();    }       public LeftPanelLayout(Context context, AttributeSet attrs) {        super(context, attrs);        setupViews();    }    private void setupViews() {        final LayoutInflater mInflater = LayoutInflater.from(getContext());        LinearLayout viewRoot = (LinearLayout) mInflater.inflate(R.layout.left_panel, null);        addView(viewRoot);        ivUserIcon = (ImageView) viewRoot.findViewById(R.id.iv_user_icon);        tvNickname = (TextView) viewRoot.findViewById(R.id.tv_nickname);        mExpandableListView = (ExpandableListView) viewRoot.findViewById(R.id.elv_list_view);        initialized();    }    private void initialized() {        Resources resources = this.getResources();        mGroupNames = resources.getStringArray(R.array.left_panel_group_names);        String[] firstGroupNames = resources.getStringArray(R.array.left_panel_first_group_names);        String[] secondGroupNames = resources.getStringArray(R.array.left_panel_second_group_names);        String[] threeGroupNames = resources.getStringArray(R.array.left_panel_group_three_names);        int[] firstGroupIcons = {                 R.drawable.left_panel_item_newsfeed_icon_selector,                 R.drawable.left_panel_item_message_icon_selector,                R.drawable.left_panel_item_chat_icon_selector,                 R.drawable.left_panel_item_friends_icon_selector,                R.drawable.left_panel_item_search_icon_selector };        int[] secondGroupIcons = {                 R.drawable.left_panel_item_location_icon_selector,                 R.drawable.left_panel_item_mainpage_icon_selector,                R.drawable.left_panel_item_hot_icon_selector,                R.drawable.left_panel_item_apps_icon_selector };        int[] threeGroupIcons = {                 R.drawable.left_panel_item_settings_icon_selector,                R.drawable.left_panel_item_layout_icon_selector };        addGroup(0, firstGroupNames, firstGroupIcons);        addGroup(1, secondGroupNames, secondGroupIcons);        addGroup(2, threeGroupNames, threeGroupIcons);        mExListViewAdapter = new LeftPanelExListViewAdapter(getContext(), mListItems);        mExpandableListView.setAdapter(mExListViewAdapter);        // 设置默认让所有组都展开        for (int i = 0; i < mListItems.size(); i++) {            mExpandableListView.expandGroup(i);        }        // 设置OnGroupClick时，不再展开或收缩组内的子项        mExpandableListView.setOnGroupClickListener(new OnGroupClickListener() {            @Override            public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {                // 表示GroupItem的单击事件已被处理                return true;            }        });        mExpandableListView.setOnChildClickListener(new OnChildClickListener() {            @Override            public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {                if (mOnSeletedListener == null) {                    return false;                }                // 去掉上一次选中的项                mListItems.get(mGroupPosition).getGroups().get(mChildPosition).setSelected(false);                                mGroupPosition = groupPosition;                mChildPosition = childPosition;                // 选中当前选择的项                mListItems.get(mGroupPosition).getGroups().get(mChildPosition).setSelected(true);                mExListViewAdapter.notifyDataSetChanged();                                mOnSeletedListener.seletedChildView(groupPosition, childPosition);                                return true;            }        });    }    /**     * 添加数据到指定的组     * @param groupId 组ID     * @param names 子项的名字数组     * @param icons 子项的图标数组     */    private void addGroup(int groupId, String[] names, int[] icons) {        LeftPanelListItem listItem = new LeftPanelListItem();        listItem.setId(groupId);        listItem.setName(mGroupNames[groupId]);        // 组没有操作指示图标        // listItem.setDrawableId(drawableId);        ArrayList<LeftPanelListItem> firstGroup = new ArrayList<LeftPanelListItem>();        for (int i = 0; i < names.length; i++) {            LeftPanelListItem firstGroupItem = new LeftPanelListItem();            firstGroupItem.setId(i);            firstGroupItem.setName(names[i]);            firstGroupItem.setDrawableId(icons[i]);                        // 默认选中第一组中的第一项            if (groupId == 0 && i== 0) {                firstGroupItem.setSelected(true);            }            // 可以无限延伸            // firstGroupItem.setGroups(null);            firstGroup.add(firstGroupItem);        }        listItem.setGroups(firstGroup);        mListItems.add(listItem);    }    /**     * 设置选中的Item事件监听器     * @param seletedListener     */    public void setOnSeletedListener(onSeletedListener seletedListener) {        mOnSeletedListener = seletedListener;    }    /**     * 选中的Item事件监听器     * @author android_ls     */    public interface onSeletedListener {        /**         * 当前选中的Item事件处理器         * @param groupPosition 所属组Id         * @param childPosition 在所属组内的位置         */        public abstract void seletedChildView(int groupPosition, int childPosition);    }        /**     * 获取用户的基本信息     * @param accessToken     */    public void getUserInfo(){        String accessToken = mAuthTokenManager.getAccessToken();        LogUtil.e(TAG, "accessToken = " + accessToken);                // 获取用户信息所需的参数        Map<String, String> parameter = new HashMap<String, String>();        parameter.put("v", "1.0"); // API的版本号，固定值为1.0         parameter.put("access_token", accessToken); // OAuth2.0验证授权后获得的token。        parameter.put("format", "JSON"); // 返回值的格式。请指定为JSON或者XML，推荐使用JSON，缺省值为XML         parameter.put("call_id", "1.0"); // 请求队列号         parameter.put("method", "users.getInfo"); // 你要访问那个接口，我们肯定调用用获取用户的信息的接口咯，该接口支持批量获取。        AsyncBaseRequest asyncHttpsPost = new AsyncHttpsPost(Constant.API_SERVER_URL, parameter, new ParseCallback() {            @Override            public Object parse(String json) throws JSONException {                LogUtil.i(TAG, "json = " + json);                Gson gson = new Gson();                java.lang.reflect.Type type = new TypeToken<LinkedList<UserBasicInfo>>() {}.getType();                LinkedList<UserBasicInfo> userList = gson.fromJson(json, type);                return userList.get(0);            }        }, new ResultCallback() {            @Override            public void onSuccess(Object obj) {                final UserBasicInfo user = (UserBasicInfo) obj;                LogUtil.i(TAG, "url = " + user.getHeadurl());                                mHandler.post(new Runnable() {                                        @Override                    public void run() {                        // 设置当前用户的姓名或昵称                        // tvNickname.setText(user.getName());                                                // 这里为了不透露本人真实姓名，就设置成固定值了                        tvNickname.setText("android_ls");                                                String headUrl = user.getHeadurl();                        LogUtil.i(TAG, "headUrl = " + user.getHeadurl());                                               // 用户图像的大小48x48，单位为dip，转换为px                        int widthPx = DensityUtil.dip2px(mActivity, 48);                                                // 要一张圆角高质量的图片                        ImageInfo imgInfo = new ImageInfo(ivUserIcon, headUrl, widthPx, widthPx, true, false);                        mImageLoader.displayImage(imgInfo);                                                // 点击用户图像事件处理                        ivUserIcon.setOnClickListener(new View.OnClickListener() {                                                        @Override                            public void onClick(View v) {                                // TODO Auto-generated method stub                                Intent intent = new Intent(mActivity,PersonalHomepageActivity.class);                                intent.putExtra("actor_id", user.getUid());                                intent.putExtra("flage", 1); // 这里的标识值随便写了，呵呵                                mActivity.startActivity(intent);                            }                        });                                            }                });            }            @Override            public void onFail(int errorCode) {                // TODO Auto-generated method stub            }        });        mDefaultThreadPool.execute(asyncHttpsPost);        mAsyncRequests.add(asyncHttpsPost);                // 请求失败返回的JSON        /* {             "request_args":                 [                      {"value":"1.0", "key":"v"},                      {"value":"JSON","key":"format"},                      {"value":"1.0","key":"call_id"},                      {"value":"195789|6.017ad1db58c652f0fa5e9f32588a170e.2592000.1367838000-461345584","key":"access_token"}                 ],              "error_code":3,              "error_msg":"请求未知方法"         }*/                  // 请求成功后返回的JSON         /*[              {                  "uid":461345584,                  "tinyurl":"http://hdn.xnimg.cn/photos/hdn521/20130319/1930/h_tiny_zggz_8829000002e6113e.jpg",                  "vip":1,                  "sex":1,                  "name":"逐鹿。。。",                  "star":1,                  "headurl":"http://hdn.xnimg.cn/photos/hdn521/20130319/1930/h_head_jbdD_8829000002e6113e.jpg",                  "zidou":0              }         ]*/            }    }

       LeftPanelExListViewAdapter类源码：

package com.everyone.android.ui.leftpanel;import java.util.List;import android.content.Context;import android.graphics.Color;import android.util.TypedValue;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.widget.AbsListView;import android.widget.BaseExpandableListAdapter;import android.widget.LinearLayout;import android.widget.TextView;import com.everyone.android.R;import com.everyone.android.entity.LeftPanelListItem;/** * 功能描述：左侧面板ExpandableListView组件数据适配器 * @author android_ls * */public class LeftPanelExListViewAdapter extends BaseExpandableListAdapter {    private Context mContext;    private List<LeftPanelListItem> mListItems;    public LeftPanelExListViewAdapter(Context context, List<LeftPanelListItem> listItems) {        mContext = context;        mListItems = listItems;    }    public LeftPanelListItem getChild(int groupPosition, int childPosition) {        return mListItems.get(groupPosition).getGroups().get(childPosition);    }    public long getChildId(int groupPosition, int childPosition) {        return childPosition;    }    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {        ViewHolder viewHolder = null;        if (convertView == null) {            convertView = getItemLayout(80, R.drawable.left_panel_item_selector, 18, Color.GRAY, 30);            viewHolder = new ViewHolder();            viewHolder.groupName = (TextView) convertView.findViewById(0);            convertView.setTag(viewHolder);        } else {            viewHolder = (ViewHolder) convertView.getTag();        }        LeftPanelListItem listItem = getChild(groupPosition, childPosition);        viewHolder.groupName.setCompoundDrawablesWithIntrinsicBounds(listItem.getDrawableId(), 0, 0, 0);        viewHolder.groupName.setCompoundDrawablePadding(10);        viewHolder.groupName.setText(listItem.getName());        if(listItem.isSelected()){            convertView.setBackgroundResource(R.drawable.menu_item_bg_sel);            viewHolder.groupName.setSelected(true);        } else {            convertView.setBackgroundResource(R.drawable.left_panel_item_selector);            viewHolder.groupName.setSelected(false);        }                return convertView;    }    public int getChildrenCount(int groupPosition) {        return mListItems.get(groupPosition).getGroups().size();    }    public LeftPanelListItem getGroup(int groupPosition) {        return mListItems.get(groupPosition);    }    public int getGroupCount() {        return mListItems.size();    }    public long getGroupId(int groupPosition) {        return groupPosition;    }    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {        ViewHolder viewHolder = null;        if (convertView == null) {            convertView = getItemLayout(60, R.drawable.v5_0_1_desktop_list_item, 15, Color.WHITE, 20);            viewHolder = new ViewHolder();            viewHolder.groupName = (TextView) convertView.findViewById(0);            convertView.setTag(viewHolder);        } else {            viewHolder = (ViewHolder) convertView.getTag();        }        viewHolder.groupName.setText(getGroup(groupPosition).getName());        return convertView;    }    public boolean hasStableIds() {        return false;    }    public boolean isChildSelectable(int groupPosition, int childPosition) {        return true;    }    static class ViewHolder {        public TextView groupName;    }    /**     * 根据参数配置获取相应的Layout     * @param height Layout高度     * @param backgroundId Layout的背景图片ID     * @param textSize 字体大小     * @param txetColor 字体颜色     * @param padding 文字距离左边的大小（间距）     * @return LinearLayout     */    private LinearLayout getItemLayout(int height, int backgroundId, int textSize, int txetColor, int padding) {        LinearLayout layout = new LinearLayout(mContext);        AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, height);        layout.setBackgroundResource(backgroundId);        layout.setGravity(Gravity.CENTER_VERTICAL);        layout.setLayoutParams(lp);        TextView textView = new TextView(mContext);        textView.setId(0);        textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, textSize);        textView.setTextColor(txetColor);        textView.setPadding(padding, 0, 0, 0);        layout.addView(textView);        return layout;    }}

       以聊天列表视图为例，代码如下：

package com.everyone.android.ui.chat;import android.content.Context;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.LinearLayout;import com.everyone.android.R;import com.everyone.android.ui.EveryoneActivity;import com.everyone.android.widget.TopMenuNavbar;/** * 功能描述：聊天列表视图 * @author android_ls */public class ChatLayout extends FrameLayout implements OnClickListener {    /**     * LOG打印标签     */    private static final String TAG = ChatLayout.class.getSimpleName();    private TopMenuNavbar topMenuNavbar;    /**     * 获取顶部左侧的menu组件     * @return     */    public LinearLayout getMenuView() {        return topMenuNavbar.llShowMenu;    }    private EveryoneActivity mActivity;    public ChatLayout(EveryoneActivity activity) {        super(activity);        mActivity = activity;        setupViews();    }    public ChatLayout(Context context, AttributeSet attrs) {        super(context, attrs);        setupViews();    }    private void setupViews() {        final LayoutInflater mLayoutInflater = LayoutInflater.from(getContext());        LinearLayout freshNewsViewRoot = (LinearLayout) mLayoutInflater.inflate(R.layout.chat, null);        addView(freshNewsViewRoot);        topMenuNavbar = (TopMenuNavbar) freshNewsViewRoot.findViewById(R.id.rl_top_menu_navbar);        LinearLayout llDownOperation = topMenuNavbar.mLlRefresh;        ImageView ivOperation = (ImageView) llDownOperation.findViewById(R.id.iv_refresh);        ivOperation.setImageResource(R.drawable.v5_0_1_flipper_head_add_chat_friends);        topMenuNavbar.mLlDownList.setOnClickListener(this);        topMenuNavbar.mLlRefresh.setOnClickListener(this);        topMenuNavbar.ivRightLine.setVisibility(View.GONE);        topMenuNavbar.tvRightOperationName.setVisibility(View.GONE);        topMenuNavbar.tvTitle.setText("聊天");        topMenuNavbar.ivDownListIcon.setVisibility(View.GONE);    }    @Override    public void onClick(View v) {        // TODO Auto-generated method stub    }}

        EveryoneActivity类，目前的源码如下：

package com.everyone.android.ui;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.view.ViewGroup.LayoutParams;import com.everyone.android.api.NetworkBaseActivity;import com.everyone.android.ui.chat.ChatLayout;import com.everyone.android.ui.find.SearchLayout;import com.everyone.android.ui.freshnews.FreshNewsLayout;import com.everyone.android.ui.friend.FriendLayout;import com.everyone.android.ui.leftpanel.LeftPanelLayout;import com.everyone.android.ui.leftpanel.LeftPanelLayout.onSeletedListener;import com.everyone.android.ui.message.MessageLayout;import com.everyone.android.widget.ScrollerContainer;/** * 功能描述：应用主界面 * @author android_ls * */public class EveryoneActivity extends NetworkBaseActivity implements View.OnClickListener, onSeletedListener {    /**     * LOG打印标签     */    private static final String TAG = EveryoneActivity.class.getSimpleName();        /**     * 滚动（滑动）容器     */    private ScrollerContainer mSlideContainer;    /**     * 左侧面板     */    private LeftPanelLayout mLeftPanelLayout;    /**     * 新鲜事     */    private FreshNewsLayout mFreshNewsLayout;    /**     * 消息     */    private MessageLayout mMessageLayout;        /**     * 聊天     */    private ChatLayout mChatLayout;        /**     * 好友     */    private FriendLayout mFriendLayout;        /**     * 查找     */    private SearchLayout mSearchLayout;        @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);            }        @Override    protected int getLayoutId() {        return 0;    }    @Override    protected void setupViews() {        mSlideContainer = new ScrollerContainer(mContext);        mLeftPanelLayout = new LeftPanelLayout(EveryoneActivity.this);        mLeftPanelLayout.setOnSeletedListener(this);                mFreshNewsLayout = new FreshNewsLayout(EveryoneActivity.this);        mMessageLayout = new MessageLayout(EveryoneActivity.this);        mChatLayout = new ChatLayout(EveryoneActivity.this);        mFriendLayout = new FriendLayout(EveryoneActivity.this);        mSearchLayout = new SearchLayout(EveryoneActivity.this);                mFreshNewsLayout.getMenuView().setOnClickListener(this);        mMessageLayout.getMenuView().setOnClickListener(this);        mChatLayout.getMenuView().setOnClickListener(this);        mFriendLayout.getMenuView().setOnClickListener(this);        mSearchLayout.getMenuView().setOnClickListener(this);                LayoutParams layoutParams = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);        mSlideContainer.addView(mLeftPanelLayout, 0, layoutParams);        mSlideContainer.addView(mFreshNewsLayout, 1, layoutParams);        setContentView(mSlideContainer);            }    @Override    protected void initialized() {        mLeftPanelLayout.getUserInfo();        mFreshNewsLayout.getFreshNews();            }    @Override    public void onClick(View v) {        mSlideContainer.show();    }    @Override    public void seletedChildView(int groupPosition, int childPosition) {        switch (groupPosition) {        case 0:            switch (childPosition) {            case 0:                mSlideContainer.switchView(mFreshNewsLayout);                break;            case 1:                mSlideContainer.switchView(mMessageLayout);                break;            case 2:                mSlideContainer.switchView(mChatLayout);                break;            case 3:                mSlideContainer.switchView(mFriendLayout);                                // 加载好友列表数据                mFriendLayout.getFriends();                break;            case 4:                mSlideContainer.switchView(mSearchLayout);                break;            default:                break;            }                        break;        case 1:            switch (childPosition) {            case 0:                break;            case 1:                break;            case 2:                break;            case 3:                break;            default:                break;            }                        break;        case 2:            switch (childPosition) {            case 0:                break;            case 1:                break;            default:                break;            }                        break;        default:            break;        }    }    // Android按返回键退出程序但不销毁，程序后台运行，同QQ退出处理方式     @Override    public boolean onKeyDown(int keyCode, KeyEvent event) {        if (keyCode == KeyEvent.KEYCODE_BACK) {            moveTaskToBack(false);            return true;        }        return super.onKeyDown(keyCode, event);    }    }