I have a ListView. which of it's items are from custom CursorAdapter. I have created separate layout for ListView items which is a CardView. I have six TextViews on each card they are Database values. Now i have to put a EditText to filter the ListView items according to the text entered in EditText.
My Code is
layout with ListView is
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#1d4563">
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/listView2"
android:layout_marginTop="40dp"
android:layout_centerHorizontal="true" />
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/editText5"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:background="@drawable/bg_edit"
android:textColorHint="#d3d3d3"
android:hint="enter Serial Number to search" />
ListView items layout is
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android.support.v7.cardview="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android.support.v7.cardview:cardBackgroundColor="@color/primary_dark"
android:id="@+id/cardItems">
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_gravity="center"
android:layout_width="fill_parent"
android:layout_height="150dp"
android:layout_margin="1dp"
card_view:cardCornerRadius="0dp"
card_view:contentPadding="2dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/card_style">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Username"
android:id="@+id/textView24"
android:textColor="#FFFFFF"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="25dp"
android:layout_marginStart="25dp"
android:layout_marginTop="8dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mobile No."
android:id="@+id/textView25"
android:textColor="#FFFFFF"
android:layout_centerVertical="true"
android:layout_marginLeft="25dp"
android:layout_marginStart="25dp"
android:layout_alignRight="@+id/textView24"
android:layout_alignEnd="@+id/textView24" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Serial No."
android:id="@+id/textView26"
android:textColor="#FFFFFF"
android:layout_marginLeft="25dp"
android:layout_marginStart="25dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="8dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView27"
android:textColor="#FFFFFF"
android:layout_marginTop="8dp"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView28"
android:textColor="#FFFFFF"
android:layout_centerVertical="true"
android:layout_alignLeft="@+id/textView27"
android:layout_alignStart="@+id/textView27" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView29"
android:layout_alignTop="@+id/textView26"
android:layout_alignLeft="@+id/textView28"
android:layout_alignStart="@+id/textView28"
android:layout_marginBottom="8dp"
android:textColor="#FFFFFF"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
My DisplayAdapter is
public class DisplayAdapter extends CursorAdapter{
@SuppressWarnings("deprecation")
public DisplayAdapter(Context context,Cursor c){
super(context,c);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View retView = inflater.inflate(R.layout.card_items, parent, false);
return retView;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
TextView tvUserName=(TextView)view.findViewById(R.id.textView27);
tvUserName.setText(cursor.getString(2));
TextView tvMobile=(TextView)view.findViewById(R.id.textView28);
tvMobile.setText(cursor.getString(3));
TextView tvSerail=(TextView)view.findViewById(R.id.textView29);
tvSerail.setText(cursor.getString(5));
}
}
My Activity is
public class TableBikeActivity extends ActionBarActivity {
private DisplayAdapter adapter;
ListView bikeList;
DatabaseHelper databaseHelper;
EditText filterText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_table_bike);
databaseHelper=new DatabaseHelper(this);
bikeList=(ListView)findViewById(R.id.listView2);
filterText=(EditText)findViewById(R.id.editText5);
filterText.addTextChangedListener(filterTextWatcher);
new Handler().post(new Runnable() {
@Override
public void run() {
adapter = new DisplayAdapter(TableBikeActivity.this, databaseHelper.getAllDataBike());
bikeList.setAdapter(adapter);
}
});
}
private TextWatcher filterTextWatcher=new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s);
}
@Override
public void afterTextChanged(Editable s) {
}
};
@Override
protected void onDestroy(){
super.onDestroy();
filterText.removeTextChangedListener(filterTextWatcher);
}
}
I have tried TextChangedListener but it's not working. Help me.
The setTextFilterEnabled() method doesn't automatically implement filtering, as it doesn't know what in your Cursor the text should be filtered against.
For a CursorAdapter cursor, you only need to use the setFilterQueryProvider, to run another query for your cursor, based on the constraint:
m_Adapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
Log.d(LOG_TAG, "runQuery constraint:"+constraint);
//uri, projection, and sortOrder might be the same as previous
//but you might want a new selection, based on your filter content (constraint)
Cursor cur = managedQuery(uri, projection, selection, selectionArgs, sortOrder);
return cur; //now your adapter will have the new filtered content
}
});
When a constraint is added (eg. by using a TextView) the adapter must be filtered:
public void onTextChanged(CharSequence s, int start, int before, int count) {
Log.d(LOG_TAG, "Filter:"+s);
if (m_slvAdapter!=null) {
m_Adapter.getFilter().filter(s);
}
}
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO Auto-generated method stub
adapter_members.getFilter().filter(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
来源：https://stackoverflow.com/questions/31026679/how-to-set-filter-to-listview-with-cursoradapter