如何在Android中实现一个微信公众号界面

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1. 界面布局

主界面布局四部分，由上到下依次是：标题栏，消息列表，底部菜弹出的子菜单，底部菜单或输入栏。

主界面基本框架main.xml代码如下：

标题栏title_bar.xml布局如下：

完成title_bar布局后，再在values\styles.xml添加自定义标题栏主题

消息列表的服务端消息item布局item_left.xml

消息列表的用户消息item布局item_right.xml

弹出的子菜单布局child_menu.xml如下：

由底部菜单切换到输入框，输入框bottom_menu_layout2.xml布局如下：

2. 代码实现

MainActivity.java

package com.example.wxdemo;  import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;  import android.os.Bundle; import android.app.Activity; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnFocusChangeListener; import android.view.ViewGroup; import android.view.Window; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RelativeLayout; import android.widget.TextView;  public class MainActivity extends Activity implements View.OnClickListener {    private LinearLayout bottomLayout;// 底部菜单父框架   private LinearLayout bottomMenuLayout1;// 底部菜单布局   private LinearLayout bottomMenuLayout2;// 底部输入框布局   private RelativeLayout btn1;// "用户绑定"按钮布局   private RelativeLayout btn2;// "扫描签到"按钮布局   private RelativeLayout btn3;// "更多"按钮布局   private LinearLayout popLayout1;   private LinearLayout popLayout2;   private LinearLayout popLayout3;// 弹出的子菜单父框架布局   private LinearLayout childLayout;// "更多"按钮的子菜单   private ListView lv;   private MyAdapter adapter;   private List> listData = new ArrayList>();    private ImageView keyboard;// 底部键盘切换图标   private ImageView menu;// 底部菜单切换图标   private Button send;// 发送按钮   private EditText inputText;// 输入框    private boolean open = true;// 子菜单填充状态标记   private boolean flag = false;// 子菜单显示状态标记   private boolean bind = false;// 用户绑定状态标记    private Animation animEnter;// 底部菜单进入动画   private Animation animExit;// 底部菜单退出动画    private View view;   private View view2;   private LayoutInflater inflater;    private int myID = 0;    @Override   protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     this.requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);     setContentView(R.layout.main);     getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,         R.layout.title_bar);// 自定义标题栏      inflater = MainActivity.this.getLayoutInflater();      popLayout1 = (LinearLayout) findViewById(R.id.pop_layout1);     popLayout2 = (LinearLayout) findViewById(R.id.pop_layout2);     popLayout3 = (LinearLayout) findViewById(R.id.pop_layout3);      bottomLayout = (LinearLayout) findViewById(R.id.bottom_layout);     bottomMenuLayout1 = (LinearLayout) findViewById(R.id.bottom_menu_layout1);      keyboard = (ImageView) findViewById(R.id.keyboard);     btn1 = (RelativeLayout) findViewById(R.id.btn1);     btn2 = (RelativeLayout) findViewById(R.id.btn2);     btn3 = (RelativeLayout) findViewById(R.id.btn3);      lv = (ListView) findViewById(R.id.lv);      btn1.setOnClickListener(this);     btn2.setOnClickListener(this);     btn3.setOnClickListener(this);     keyboard.setOnClickListener(this);      adapter = new MyAdapter(this, listData);     lv.setAdapter(adapter);    }    @Override   public void onClick(View v) {     // TODO Auto-generated method stub     int id = v.getId();     switch (id) {     case R.id.btn1:       btn1Click();       break;     case R.id.btn2:       break;     case R.id.btn3:       btn3Click();       break;     case R.id.keyboard:       keyboardClick();       break;     case R.id.menu:       menuClick();       break;     case R.id.add:       sendClick();       break;     default:       break;     }   }    public void btn1Click() {// 用户绑定     Map map = new HashMap();     map.put("type", "0");     if (!bind) {       map.put("text", "请输入您的手机号或简历ID进行帐号绑定，绑定成功后才能进行签到。");     } else {       map.put("text", "帐号已绑定成功，请您准时签到。");     }     listData.add(map);     adapter.notifyDataSetChanged();   }    public void btn2Click() {// 扫描签到     // TODO   }    public void btn3Click() {// 更多     if (open == true) {       view = inflater.inflate(R.layout.child_menu, popLayout3, true);       childLayout = (LinearLayout) view.findViewById(R.id.child_layout);       open = false;     }      if (flag == false) {       flag = true;       childLayout.setVisibility(View.VISIBLE);     } else {       flag = false;       childLayout.setVisibility(View.GONE);     }   }    public void keyboardClick() {//点击键盘按钮，由底部菜单切换为底部输入     view2 = inflater.inflate(R.layout.bottom_menu_layout2, bottomLayout,         true);     bottomMenuLayout2 = (LinearLayout) view2         .findViewById(R.id.bottom_menu_layout2);     animEnter = AnimationUtils.loadAnimation(MainActivity.this,         R.anim.my_pop_enter_anim);     animExit = AnimationUtils.loadAnimation(MainActivity.this,         R.anim.my_pop_exit_anim);     animEnter.setStartOffset(200);     bottomMenuLayout1.startAnimation(animExit);     bottomMenuLayout1.setVisibility(View.GONE);     bottomMenuLayout2.startAnimation(animEnter);     bottomMenuLayout2.setVisibility(View.VISIBLE);     menu = (ImageView) view2.findViewById(R.id.menu);     inputText = (EditText) view2.findViewById(R.id.input_text);     send = (Button) view2.findViewById(R.id.add);     menu.setOnClickListener(this);     send.setOnClickListener(this);     inputClick();   }    public void menuClick() {//点击菜单按钮，由底部输入框切换为底部菜单     bottomMenuLayout2.startAnimation(animExit);     bottomMenuLayout2.setVisibility(View.GONE);     bottomMenuLayout1.startAnimation(animEnter);     bottomMenuLayout1.setVisibility(View.VISIBLE);   }    public void inputClick() {     inputText.setOnFocusChangeListener(new OnFocusChangeListener() {        @Override       public void onFocusChange(View v, boolean hasFocus) {         // TODO Auto-generated method stub         if (hasFocus) {           send.setBackgroundResource(R.drawable.send_btn_bg);           send.setText("发送");         } else {           send.setBackgroundResource(R.drawable.add);           send.setText(" ");         }       }     });   }    public void sendClick() {     String text = inputText.getEditableText().toString();     inputText.setText("");     if (text != null && (!text.equals(""))) {       Map map;       map = new HashMap();       map.put("type", "1");// 消息类型，服务端为0，用户为1       map.put("text", text);       listData.add(map);        map = new HashMap();       map.put("type", "0");       map.put("text", "帐号已绑定成功，请您准时签到。");       listData.add(map);       adapter.notifyDataSetChanged();       bind = true;     }   }    private class MyAdapter extends BaseAdapter {     public List> list;     private Context context;     private int type;     private ListView listView;      public MyAdapter(Context context, List> list) {       this.context = context;       this.list = list;     }      @Override     public int getCount() {       // TODO Auto-generated method stub       return list.size();     }      @Override     public Object getItem(int position) {       // TODO Auto-generated method stub       return list.get(position);     }      @Override     public long getItemId(int position) {       // TODO Auto-generated method stub       return position;     }      @Override     public View getView(int position, View convertView, ViewGroup parent) {       // TODO Auto-generated method stub       ViewHolder viewHolder = null;       Map map = (Map) list.get(position);       if (map.get("type").equals("0")) {// 服务端         if (convertView == null) {           convertView = inflater.inflate(R.layout.item_left, parent,               false);           viewHolder = new ViewHolder();           viewHolder.mTextView = (TextView) convertView               .findViewById(R.id.server_text);           viewHolder.mImageView = (ImageView) convertView               .findViewById(R.id.server_image);           convertView.setTag(viewHolder);         } else {           viewHolder = (ViewHolder) convertView.getTag();         }          viewHolder.mTextView.setText(map.get("text"));        } else {// 用户         if (convertView == null) {           convertView = inflater.inflate(R.layout.item_right, parent,               false);           viewHolder = new ViewHolder();           viewHolder.mTextView = (TextView) convertView               .findViewById(R.id.user_text);           viewHolder.mImageView = (ImageView) convertView               .findViewById(R.id.user_image);           convertView.setTag(viewHolder);         } else {           viewHolder = (ViewHolder) convertView.getTag();         }         viewHolder.mTextView.setText(map.get("text"));       }        return convertView;     }    }    private final class ViewHolder {     TextView mTextView;     ImageView mImageView;   }  }

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