花了几个小时试图让这个工作，但没有用:( 我为listview设置了一个searchfilter，工作正常。但每个都有一个复选框 - 当我在过滤之前或之后检查复选框时，它不会被记住，这使得过滤器毫无意义。非常感谢这里的一些指导。
我的代码：
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.SearchView;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.Arrays;
public class MainActivity extends AppCompatActivity implements
SearchView.OnQueryTextListener {
private AllStuffModel[] modelItems = AllStuff.allConditions;
private ListView conditionsView;
private SearchView search_view;
private AllStuffAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
adapter = new AllStuffAdapter(this, new ArrayList<AllStuffModel>(Arrays.asList(modelItems)), this);
conditionsView = (ListView) findViewById(R.id.condition_list);
conditionsView.setAdapter(adapter);
search_view = (SearchView) findViewById(R.id.search_view);
search_view.setOnQueryTextListener(this);
}
@Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
}
AllStuffAdapter.java
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class AllStuffAdapter extends ArrayAdapter<AllStuffModel> implements Filterable {
private List<AllStuffModel> modelItems;
private List<AllStuffModel> filteredModelItems;
private Context context;
private MainActivity mainActivity;
private ValueFilter valueFilter;
@Override
public boolean hasStableIds() {
return true;
}
public AllStuffAdapter(Context context, List<AllStuffModel> resource, MainActivity mainActivity) {
super(context, R.layout.condition_row, resource);
this.context = context;
this.modelItems = resource;
this.mainActivity = mainActivity;
filteredModelItems = modelItems;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
convertView = inflater.inflate(R.layout.condition_row, parent, false);
TextView conditionText = (TextView) convertView.findViewById(R.id.condition_text);
final CheckBox conditionCheckBox = (CheckBox) convertView.findViewById(R.id.condition_checkbox);
conditionCheckBox.setId(position);
conditionText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!conditionCheckBox.isChecked()) {
conditionCheckBox.setChecked(true);
modelItems.get(position).setIsChecked(true);
}
else if(conditionCheckBox.isChecked()) {
conditionCheckBox.setChecked(false);
modelItems.get(position).setIsChecked(false);
}
System.out.println( modelItems.get(position).isChecked());
}
});
conditionText.setText(modelItems.get(position).getName());
conditionCheckBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CheckBox currentCheckBox = (CheckBox) v;
if (currentCheckBox.isChecked()) { // If checked set to true, else false
modelItems.get(position).setIsChecked(true);
} else if (!currentCheckBox.isChecked()) {
modelItems.get(position).setIsChecked(false);
}
System.out.println( modelItems.get(position).isChecked());
}
});
return convertView;
}
@Override
public int getCount() {
return modelItems.size();
}
@Override
public long getItemId(int position) {
return modelItems.indexOf(getItem(position));
}
@Override
public Filter getFilter() {
if (valueFilter == null) {
valueFilter = new ValueFilter();
}
return valueFilter;
}
private class ValueFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint != null && constraint.length() > 0) {
ArrayList<AllStuffModel> filterList = new ArrayList<AllStuffModel>();
for (int i = 0; i < filteredModelItems.size(); i++) {
if ((filteredModelItems.get(i).getName().toUpperCase())
.contains(constraint.toString().toUpperCase())) {
AllStuffModel allConditionsModel = new AllStuffModel(filteredModelItems.get(i).getCode(),filteredModelItems.get(i).getName());
allConditionsModel.setIsChecked(filteredModelItems.get(i).isChecked());
filterList.add(allConditionsModel);
}
}
results.count = filterList.size();
results.values = filterList;
} else {
results.count = filteredModelItems.size();
results.values = filteredModelItems;
}
return results;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
modelItems = (ArrayList<AllStuffModel>) results.values;
notifyDataSetChanged();
}
}
}
AllStuffModel.java
public class AllStuffModel {
private String name;
private String code;
private boolean isChecked;
public AllStuffModel(String code, String name) {
this.name = name;
this.code = code;
}
public String getName() {
return this.name;
}
public String getCode() {
return this.code;
}
public boolean isChecked() {
return isChecked;
}
public void setIsChecked(boolean isChecked) {
this.isChecked = isChecked;
}
}
AllStuff.java
public class AllStuff {
private AllStuff() {
}
public static final AllStuffModel[] allConditions = {
new AllStuffModel("ca", "Candy"),
new AllStuffModel("fo", "Football"),
new AllStuffModel("mu", "Music"),
new AllStuffModel("sn", "Snooker"),
};
}
condition_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:paddingTop="10dp">
<CheckBox
android:id="@+id/condition_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="7dp" />
<TextView
android:id="@+id/condition_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:textColor="#DE000000"
android:textSize="17sp" />
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/scrollview_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<SearchView
android:id="@+id/search_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="2dp"
android:queryHint="Search...." />
<ListView
android:id="@+id/condition_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"></ListView>
</LinearLayout>
</ScrollView>
我尝试做的是在notifyDataSetChaanged()中的onClick方法中使用AllStuffAdapter，但这会阻止完全检查复选框。
TL / DR：如何记住使用搜索过滤器检查的复选框？
答案 0 :(得分：3)
尝试更改
conditionCheckBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CheckBox currentCheckBox = (CheckBox) v;
if (currentCheckBox.isChecked()) { // If checked set to true, else false
modelItems.get(position).setIsChecked(true);
} else if (!currentCheckBox.isChecked()) {
modelItems.get(position).setIsChecked(false);
}
System.out.println( modelItems.get(position).isChecked());
}
});
到
conditionCheckBox.setOnCheckedChangeListener(null);
conditionCheckBox.setChecked(modelItems.get(position).isChecked());
conditionCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
modelItems.get(position).setIsChecked(isChecked);
}
});
答案 1 :(得分：2)
感谢@faranjit，我相信在modelItems.get(position).setIsChecked(isChecked);之后添加此内容（以及您的更改）可以完全解决问题。这可以验证吗？
for(AllStuffModel item: filteredModelItems){
if(modelItems.get(position).getCode().equals(item.getCode())){
item.setIsChecked(isChecked);
}
}
我们只是通过匹配正确的项目来更新列表。注意：code是我自己设定的，我总能保证它是独一无二的。