android二级listview列表实现代码(高仿大众点评)
2014-01-25 10:43
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今天来实现以下大众点评客户端的横向listview二级列表,先看一下样式。
这种横向的listview二级列表在手机软件上还不太常见,但是使用过平板的都应该知道,在平板上市比较常见的。可能是因为平板屏幕比较大,而且也能展现更多的内容。
下面来看一下我的实现步骤。
首先自定义一个listview,代码如下:
然后看一下xml的布局:
两个自定义的listview 横向布局,然后是父listview的适配器
对应的 item布局:
然后是子适配器代码:
对应的xml布局:
最后看下主activity的实现代码
今天来实现以下大众点评客户端的横向listview二级列表,先看一下样式。
这种横向的listview二级列表在手机软件上还不太常见,但是使用过平板的都应该知道,在平板上市比较常见的。可能是因为平板屏幕比较大,而且也能展现更多的内容。
下面来看一下我的实现步骤。
首先自定义一个listview,代码如下:
public class MyListView extends ListView implements Runnable { private float mLastDownY = 0f; private int mDistance = 0; private int mStep = 10; private boolean mPositive = false; public MyListView (Context context, AttributeSet attrs) { super(context, attrs); } public MyListView (Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public MyListView (Context context) { super(context); } @Override public boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: if (mLastDownY == 0f && mDistance == 0) { mLastDownY = event.getY(); return true; } break; case MotionEvent.ACTION_CANCEL: break; case MotionEvent.ACTION_UP: if (mDistance != 0) { mStep = 1; mPositive = (mDistance >= 0); this.post(this); return true; } mLastDownY = 0f; mDistance = 0; break; case MotionEvent.ACTION_MOVE: if (mLastDownY != 0f) { mDistance = (int) (mLastDownY - event.getY()); if ((mDistance < 0 && getFirstVisiblePosition() == 0 && getChildAt(0).getTop() == 0) || (mDistance > 0 && getLastVisiblePosition() == getCount() - 1)) { mDistance /= 2; scrollTo(0, mDistance); return true; } } mDistance = 0; break; } return super.onTouchEvent(event); } public void run() { mDistance += mDistance > 0 ? -mStep : mStep; scrollTo(0, mDistance); if ((mPositive && mDistance <= 0) || (!mPositive && mDistance >= 0)) { scrollTo(0, 0); mDistance = 0; mLastDownY = 0f; return; } mStep += 1; this.postDelayed(this, 10); } }
然后看一下xml的布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" > <com.example.multilistview.MyListView android:id="@+id/listView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:choiceMode="singleChoice" android:scrollbars="none" android:divider="@drawable/listitem_divide" android:listSelector="#00000000" android:background="#e4e3de" > </com.example.multilistview.MyListView> <com.example.multilistview.MyListView android:id="@+id/subListView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:background="#e4e3de" > </com.example.multilistview.MyListView> </LinearLayout>
两个自定义的listview 横向布局,然后是父listview的适配器
public class MyAdapter extends BaseAdapter { Context context; LayoutInflater inflater; String [] foods; int last_item; int [] images; private int selectedPosition = -1; public MyAdapter(Context context,String [] foods,int[] images){ this.context = context; this.foods = foods; this.images = images; inflater=LayoutInflater.from(context); } @Override public int getCount() { // TODO Auto-generated method stub return foods.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return 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 holder = null; if(convertView==null){ convertView = inflater.inflate(R.layout.mylist_item, null); holder = new ViewHolder(); holder.textView =(TextView)convertView.findViewById(R.id.textview); holder.imageView =(ImageView)convertView.findViewById(R.id.imageview); holder.layout=(LinearLayout)convertView.findViewById(R.id.colorlayout); convertView.setTag(holder); } else{ holder=(ViewHolder)convertView.getTag(); } // 设置选中效果 if(selectedPosition == position) { holder.textView.setTextColor(Color.BLUE); holder.layout.setBackgroundColor(Color.LTGRAY); } else { holder.textView.setTextColor(Color.WHITE); holder.layout.setBackgroundColor(Color.TRANSPARENT); } holder.textView.setText(foods[position]); holder.textView.setTextColor(Color.BLACK); holder.imageView.setBackgroundResource(images[position]); return convertView; } public static class ViewHolder{ public TextView textView; public ImageView imageView; public LinearLayout layout; } public void setSelectedPosition(int position) { selectedPosition = position; } }
对应的 item布局:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/colorlayout" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/imageview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dip" android:layout_marginTop="5dip" /> <TextView android:id="@+id/textview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" android:textSize="16dip" android:layout_marginTop="8dip" android:layout_marginLeft="8dip" android:layout_marginBottom="8dip"/> <!-- android:background="@drawable/selector" 自定义listview 样式--> </LinearLayout>
然后是子适配器代码:
public class SubAdapter extends BaseAdapter { Context context; LayoutInflater layoutInflater; String[][] cities; public int foodpoition; public SubAdapter(Context context, String[][] cities,int position) { this.context = context; this.cities = cities; layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); this.foodpoition = position; } @Override public int getCount() { // TODO Auto-generated method stub return cities.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return getItem(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; final int location=position; if (convertView == null) { convertView = layoutInflater.inflate(R.layout.sublist_item, null); viewHolder = new ViewHolder(); viewHolder.textView = (TextView) convertView .findViewById(R.id.textview1); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.textView.setText(cities[foodpoition][position]); viewHolder.textView.setTextColor(Color.BLACK); return convertView; } public static class ViewHolder { public TextView textView; } }
对应的xml布局:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" > <TextView android:id="@+id/textview1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="aaaaa" android:textSize="16dip" android:layout_marginTop="10dip" android:layout_marginLeft="8dip" android:layout_marginBottom="8dip"/> </LinearLayout>
最后看下主activity的实现代码
public class MainActivity extends Activity { private MyListView listView; private MyListView subListView; private MyAdapter myAdapter; private SubAdapter subAdapter; String cities[][] = new String[][] { new String[] {"全部美食", "本帮江浙菜", "川菜", "粤菜", "湘菜","东北菜","台湾菜","新疆/清真","素菜","火锅","自助餐","小吃快餐","日本","韩国料理", "东南亚菜","西餐","面包甜点","其他"}, new String[] {"全部休闲娱乐","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部购物", "综合商场", "服饰鞋包", "运动户外","珠宝饰品","化妆品","数码家电","亲子购物","家居建材" ,"书店","书店","眼镜店","特色集市","更多购物场所","食品茶酒","超市/便利店","药店"}, new String[] {"全部休闲娱乐","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全","咖啡厅","酒吧","茶馆","KTV","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部","咖啡厅","酒吧","茶馆","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部休","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部休闲","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部休闲娱","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏"}, new String[] {"全部休闲娱乐","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏","更多休闲娱乐"}, new String[] {"全部休闲aaa","咖啡厅","酒吧","茶馆","KTV","电影院","游乐游艺","公园","景点/郊游","洗浴","足浴按摩","文化艺术", "DIY手工坊","桌球馆","桌面游戏"}, }; String foods[] =new String []{"全部频道","美食","休闲娱乐","购物","酒店","丽人","运动健身","结婚","亲子","爱车","生活服务"}; int images[] = new int[]{R.drawable.ic_category_0,R.drawable.ic_category_10,R.drawable.ic_category_30,R.drawable.ic_category_20 ,R.drawable.ic_category_60,R.drawable.ic_category_50,R.drawable.ic_category_45,R.drawable.ic_category_50,R.drawable.ic_category_70, R.drawable.ic_category_65,R.drawable.ic_category_80}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); myAdapter=new MyAdapter(getApplicationContext(), foods, images); listView.setAdapter(myAdapter); selectDefult(); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { // TODO Auto-generated method stub final int location=position; myAdapter.setSelectedPosition(position); myAdapter.notifyDataSetInvalidated(); subAdapter=new SubAdapter(getApplicationContext(), cities, position); subListView.setAdapter(subAdapter); subListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { // TODO Auto-generated method stub Toast.makeText(getApplicationContext(), cities[location][position], Toast.LENGTH_SHORT).show(); } }); } }); } private void init(){ listView=(MyListView) findViewById(R.id.listView); subListView=(MyListView) findViewById(R.id.subListView); } private void selectDefult(){ final int location=0; myAdapter.setSelectedPosition(0); myAdapter.notifyDataSetInvalidated(); subAdapter=new SubAdapter(getApplicationContext(), cities, 0); subListView.setAdapter(subAdapter); subListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) { // TODO Auto-generated method stub Toast.makeText(getApplicationContext(), cities[location][position], Toast.LENGTH_SHORT).show(); } }); } }默认我选中了第0个,下面看一下运行效果:
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