我对android很新。我正在尝试使用arrayadapter在项目列表上开发搜索功能，如下所示。搜索功能应该对模型的名称进行搜索。
public class InteractiveArrayAdapter extends ArrayAdapter<Model> implements Filterable{
private final List<Model> list;
private final Activity context;
protected Filter filter;
private ArrayList<Model> arraylist;
public InteractiveArrayAdapter(Activity context, List<Model> list) {
super(context, R.layout.mylist, list);
this.context = context;
this.list = list;
this.arraylist = new ArrayList<Model>();
this.arraylist.addAll(list);
//filter = new PhysFilter();
}
class ViewHolder {
protected TextView text;
protected CheckBox checkbox;
protected ImageView icon_verify, icon_auth;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.mylist, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.text = (TextView) view.findViewById(R.id.label);
Typeface face=Typeface.createFromAsset(getAssets(), "fonts/verdana.ttf");
viewHolder.text.setTypeface(face);
viewHolder.icon_verify = (ImageView) view.findViewById(R.id.icon_verify);
if(list_m.get(position).isVerified() == true)
viewHolder.icon_verify.setImageResource(R.drawable.verify_icon2);
else
viewHolder.icon_verify.setImageResource(R.drawable.verify_icon);
viewHolder.icon_auth = (ImageView) view.findViewById(R.id.icon_auth);
if(list_m.get(position).isAuthorised() == true)
viewHolder.icon_auth.setImageResource(R.drawable.auth_icon2);
else
viewHolder.icon_auth.setImageResource(R.drawable.auth_icon);
viewHolder.checkbox = (CheckBox) view.findViewById(R.id.check);
viewHolder.checkbox
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
Model element = (Model) viewHolder.checkbox.getTag();
element.setSelected(buttonView.isChecked());
System.out.println("checked change");
}
});
view.setTag(viewHolder);
viewHolder.checkbox.setTag(list.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).checkbox.setTag(list.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(list.get(position).getName());
holder.checkbox.setChecked(list.get(position).isSelected());
return view;
}
// Filter Class
public void filter(String charText) {
charText = charText.toLowerCase(Locale.getDefault());
list.clear();
if (charText.length() == 0) {
list.addAll(arraylist);
} else {
for (Model wp : arraylist) {
if (wp.getName().toLowerCase(Locale.getDefault())
.contains(charText)) {
list.add(wp);
}
}
}
notifyDataSetChanged();
}
}
list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@+id/label"
android:layout_marginLeft="70px"
android:layout_marginTop="10px"
android:textSize="22px" >
<requestFocus />
</TextView>
<CheckBox
android:id="@+id/check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:textSize="0sp"
android:focusable="false"
android:layout_marginLeft="10dp"
android:button="@layout/checkbox" />
<ImageView
android:id="@+id/icon_verify"
android:layout_width="30px"
android:layout_height="30px"
android:layout_marginLeft="600px"
android:layout_marginRight="10px"
android:layout_marginTop="30px" >
</ImageView>
<ImageView
android:id="@+id/icon_auth"
android:layout_width="30px"
android:layout_height="30px"
android:layout_marginLeft="650px"
android:layout_marginRight="5px"
android:layout_marginTop="30px" >
</ImageView>
</RelativeLayout>
Model.java
public class Model {
private int tradeID, pos;
private String name;
private boolean selected, verified, authorised;
public Model(int pos, String name, int tradeID, boolean verified, boolean authorised){
this.pos = pos;
this.name = name;
this.tradeID = tradeID;
this.verified = verified;
this.authorised = authorised;
selected = false;
}
public int getPos() {
return pos;
}
public void setPos(int pos) {
this.pos = pos;
}
public int getTradeID() {
return tradeID;
}
public void setTradeID(int tradeID) {
this.tradeID = tradeID;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
public boolean isVerified() {
return verified;
}
public void setVerified(boolean verified) {
this.verified = verified;
}
public boolean isAuthorised() {
return authorised;
}
public void setAuthorised(boolean authorised) {
this.authorised = authorised;
}
}
下面是我在edittext上所做的事情，但是当我输入任何字符时，列表显示将为空。任何人都可以建议我应该做什么或我在这里做错了什么？任何帮助将不胜感激。谢谢！
EditText search=(EditText)header.findViewById(R.id.searchbox);
search.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
// When user changed the Text
String text = search.getText().toString().toLowerCase(Locale.getDefault());
((InteractiveArrayAdapter) adapter).filter(text);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});