用EditText在ListView中search
我有一个ListView 。 它的每一行都包含3个TextView和2个Button 。 在它上面，我有一个EditText 。 我怎样才能过滤我的ListView由每行的第一个TextView中的值？
按照链接
http://marakana.com/forums/android/learning_android_book/617.html
http://androidsearchfilterlistview.blogspot.in/2011/06/android-custom-list-view-filter.html
如何在Android中的EditText上input时过滤ListView数据
如何dynamic更新Android上的ListView
为列表视图创build一些数组列表。在“AddTextChangeListener”上，您可以search列表中的类似项目，并为search到的文本加载新的数组列表…
edittext.addTextChangedListener(new TextWatcher(){ public void afterTextChanged(Editable s) { //search for the keyword and add the items to a new arraylist }
下面的代码使用自定义列表适配器。
我有3个文本视图使用自定义列表适配器显示。 我做了一个样本，它根据列表顶部editext中的input进行search。 根据input的比较，在每一行的textview1中进行数据处理，并对数据进行相应的过滤和显示。
您可以在列表视图行中有其他项目，search可以基于texview1 / textview2或textview3。 根据您的需要修改以下内容。
public class MainActivity extends Activity { ArrayList<NewData> mTemp=new ArrayList<NewData>(); ArrayList<NewData> mPostingData=new ArrayList<NewData>(); ArrayList< NewData> mOri = new ArrayList<NewData>(); Myadapter ma; EditText search; NewData nd; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); for(int i = 0; i < 20; i++) { nd=new NewData(); nd.newDatacus.put(NewData.TAG_CUSTOMER_CODE, "i"+i); nd.newDatacus.put(NewData.TAG_CUSTOMER_NAME, "a"+i); nd.newDatacus.put(NewData.TAG_CUSTOMER_MOBILE, "number"); nd.newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS, "address"); mOri.add(nd); } ma= new Myadapter(MainActivity.this); mPostingData=mOri; mTemp=mOri; ListView lv= (ListView) findViewById(R.id.list); lv.setAdapter(ma); search= (EditText) findViewById(R.id.search); search.addTextChangedListener(new TextWatcher() { public void onTextChanged(CharSequence s, int start, int before, int count) { ma.getFilter().filter(s); ma.notifyDataSetChanged(); } public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void afterTextChanged(Editable s) { } }); } class Myadapter extends ArrayAdapter { LayoutInflater mInflater; public void setData(ArrayList<NewData> mPpst) { mPostingData = mPpst;//contains class items data. } @Override public Filter getFilter() { return new Filter() { @Override protected void publishResults(CharSequence constraint, FilterResults results) { if (results != null && results.count >= 0) { setData((ArrayList<NewData>) results.values);//if results of search is null set the searched results data } else { setData(mOri);// set original values } notifyDataSetInvalidated(); } @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults result = new FilterResults(); if (!TextUtils.isEmpty(constraint)) { constraint = constraint.toString().toLowerCase(); ArrayList<NewData> foundItems = new ArrayList<NewData>(); if(mTemp!=null) { for(int i=0;i<mTemp.size();i++) { if (mTemp.get(i).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString().contains(constraint)) { System.out.println("My datas"+mTemp.get(i).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString()); foundItems.add(mTemp.get(i)); } else { } } } result.count = foundItems.size();//search results found return count result.values = foundItems;// return values } else { result.count=-1;// no search results found } return result; } }; } public Myadapter(Context context) { super(context, 0); mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); // TODO Auto-generated constructor stub } @Override public int getCount() { // TODO Auto-generated method stub return mPostingData.size(); } @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 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ViewHolder holder; if(mOri == null ){ return null; } // When convertView is not null, we can reuse it directly, there is no need // to reinflate it. We only inflate a new View when the convertView supplied // by ListView is null. if (convertView == null) { convertView = mInflater.inflate(R.layout.list, null); convertView.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); // Creates a ViewHolder and store references to the two children views // we want to bind data to. holder = new ViewHolder(); holder.t1=(TextView) convertView.findViewById(R.id.textView1); holder.t2 = (TextView) convertView.findViewById(R.id.textView2); holder.t3 = (TextView) convertView.findViewById(R.id.textView3); convertView.setTag(holder); } else { // Get the ViewHolder back to get fast access to the TextView // and the ImageView. holder = (ViewHolder) convertView.getTag(); } holder.t1.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_CODE).toString()); holder.t2.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_NAME).toString()); holder.t3.setText(mPostingData.get(position).newDatacus.get(NewData.TAG_CUSTOMER_MOBILE).toString()); return convertView; } } class ViewHolder { TextView t1,t2,t3; }
main.xml中
<?xml version="1.0" encoding="utf-8"?>
<EditText android:id="@+id/search" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" />
List.xml // xml来膨胀
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingLeft="20dp" android:text="TextView" /> <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingLeft="20dp" android:text="TextView" /> <TextView android:id="@+id/textView3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:paddingLeft="20dp" android:text="TextView" />
NewData类
public class NewData { public static final String TAG_CUSTOMER_CODE = "customer_code"; public static final String TAG_CUSTOMER_NAME = "customer_name"; public static final String TAG_CUSTOMER_MOBILE = "customer_mobile"; public static final String TAG_CUSTOMER_ADDRESS = "customer_address"; Hashtable newDatacus=new Hashtable(); public NewData() { newDatacus.put(NewData.TAG_CUSTOMER_CODE,new String()); newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS,new String()); newDatacus.put(NewData.TAG_CUSTOMER_NAME,new String()); newDatacus.put(NewData.TAG_CUSTOMER_MOBILE,new String()); newDatacus.put(NewData.TAG_CUSTOMER_ADDRESS,new String()); } }
