Android 使用listview的自定义适配器在操作栏中搜索不正常
好的，我正在尝试制作一个活动，它将有一个列表视图，并且可以通过操作栏搜索选项进行搜索 如果我使用android的默认arraylist，它就可以正常工作 但当我试图使用自己的扩展baseAdapter的适配器时，它不能正常工作（不能正常搜索） 我的总代码在下面的链接中 有人能帮我解决这个问题吗 代码为：： 舱单：：Android 使用listview的自定义适配器在操作栏中搜索不正常,android,listview,Android,Listview,好的，我正在尝试制作一个活动，它将有一个列表视图，并且可以通过操作栏搜索选项进行搜索 如果我使用android的默认arraylist，它就可以正常工作 但当我试图使用自己的扩展baseAdapter的适配器时，它不能正常工作（不能正常搜索） 我的总代码在下面的链接中 有人能帮我解决这个问题吗 代码为：： 舱单：： <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.exam
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mysearchapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".SecondActivity"
android:label="@string/title_activity_second" >
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchable" />
</activity>
</application>
</manifest>
public class ImageAdapter extends BaseAdapter implements Filterable
{
private Context context;
private ArrayList<String> originalData = null;
ArrayList<String> filteredData = null;
ValueFilter valueFilter = new ValueFilter();
public ImageAdapter(Context context, ArrayList<String> mobileValues)
{
this.context = context;
this.originalData = mobileValues;
this.filteredData = mobileValues;
}
@Override
public int getCount() {
return filteredData.size();
}
@Override
public Object getItem(int position) {
return filteredData.get(position);
}
@Override
public long getItemId(int position) {
return filteredData.indexOf(getItem(position));
}
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = new View(context);
// get layout from mobile.xml
gridView = inflater.inflate(R.layout.city_list_item, null);
// set value into textview
TextView textView = (TextView) gridView
.findViewById(R.id.grid_item_label);
textView.setText(originalData.get(position));
// set image based on selected text
// ImageView imageView = (ImageView)
// gridView.findViewById(R.id.grid_item_image);
// imageView.setImageResource(R.drawable.city_image);
} else {
gridView = (View) convertView;
}
return gridView;
}
@Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
@Override
public Filter getFilter() {
return valueFilter;
}
private class ValueFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toUpperCase();
FilterResults results = new FilterResults();
/*
* if (constraint != null && constraint.length() > 0) {
*/
final ArrayList<String> lst = ImageAdapter.this.originalData;
int count = lst.size();
final ArrayList<String> filterList = new ArrayList<String>(count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = lst.get(i);
if ((filterableString.toUpperCase()).contains(filterString)) {
filterList.add(filterableString);
}
}
results.count = filterList.size();
results.values = filterList;
/* } *//*
* else { results.count = mStringFilterList.size();
* results.values = mStringFilterList; }
*/
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredData = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
}
公共类ImageAdapter扩展BaseAdapter实现可过滤
{
私人语境；
private ArrayList originalData=null；
ArrayList Filteredata=null；
ValueFilter ValueFilter=新的ValueFilter（）；
公共ImageAdapter（上下文上下文，ArrayList mobileValues）
{
this.context=上下文；
this.originalData=mobileValues；
this.filteredData=mobileValues；
}
@凌驾
public int getCount（）{
返回filteredData.size（）；
}
@凌驾
公共对象getItem（int位置）{
返回filteredData.get（位置）；
}
@凌驾
公共长getItemId（int位置）{
返回filteredata.indexOf（getItem（position））；
}
公共视图getView（int位置、视图转换视图、视图组父视图）
{
LayoutFlater充气器=（LayoutFlater）上下文
.getSystemService（上下文布局\充气机\服务）；
视图网格视图；
if（convertView==null）{
gridView=新视图（上下文）；
//从mobile.xml获取布局
gridView=充气机。充气（R.layout.city\u list\u项，空）；
//将值设置为textview
TextView TextView=（TextView）gridView
.findViewById（R.id.grid\u item\u标签）；
setText（originalData.get（position））；
//基于选定文本设置图像
//ImageView图像视图=（图像视图）
//findViewById（R.id.grid\u item\u image）；
//setImageResource（R.drawable.city_image）；
}否则{
gridView=（视图）convertView；
}
返回gridView；
}
@凌驾
public void notifyDataSetChanged（）{
super.notifyDataSetChanged（）；
}
@凌驾
公共过滤器getFilter（）{
返回值过滤器；
}
私有类ValueFilter扩展了筛选器{
@凌驾
受保护的筛选器结果性能筛选（CharSequence约束）{
String filterString=constraint.toString（）.toUpperCase（）；
FilterResults results=新的FilterResults（）；
/*
*if（constraint！=null&&constraint.length（）>0）{
*/
final ArrayList lst=ImageAdapter.this.originalData；
int count=lst.size（）；
最终ArrayList过滤器列表=新ArrayList（计数）；
串滤器串；
for（int i=0；i public class SecondActivity extends Activity {
// ArrayAdapter<String> myAdapter;
ImageAdapter myAdapter;
ListView listView;
// String[] dataArray = new String[] {"India","Androidhub4you", "Pakistan",
// "Srilanka", "Nepal", "Japan"};
private ArrayList<String> dataArray = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
dataArray.add("India");
dataArray.add("Androidhub4you");
dataArray.add("Pakistan");
dataArray.add("Srilanka");
dataArray.add("Nepal");
dataArray.add("Japan");
listView = (ListView) findViewById(R.id.listview);
// myAdapter = new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1, dataArray);
myAdapter = new ImageAdapter(SecondActivity.this, dataArray);
listView.setAdapter(myAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
System.out.println(arg2 + " --postion");
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.second, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
.getActionView();
searchView.setSearchableInfo(searchManager
.getSearchableInfo(getComponentName()));
searchView.setIconifiedByDefault(false);
SearchView.OnQueryTextListener textChangeListener = new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextChange(String newText) {
// this is your adapter that will be filtered
myAdapter.getFilter().filter(newText);
System.out.println("on text chnge text: " + newText);
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
// this is your adapter that will be filtered
myAdapter.getFilter().filter(query);
System.out.println("on query submit: " + query);
return true;
}
};
searchView.setOnQueryTextListener(textChangeListener);
return super.onCreateOptionsMenu(menu);
}
}
公共类SecondActivity扩展活动{
//阵列适配器；
图像适配器；
列表视图列表视图；
//String[]dataArray=新字符串[]{“印度”、“Androidhub4you”、“巴基斯坦”，
//“斯里兰卡”、“尼泊尔”、“日本”}；
私有ArrayList dataArray=新ArrayList（）；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_秒）；
dataArray.add（“印度”）；
add（“Androidhub4you”）；
dataArray.add（“巴基斯坦”）；
dataArray.add（“Srilanka”）；
dataArray.add（“尼泊尔”）；
添加（“日本”）；
listView=（listView）findViewById（R.id.listView）；
//myAdapter=新阵列适配器（此，
//android.R.layout.simple_list_item_1，dataArray）；
myAdapter=新的ImageAdapter（SecondActivity.this，dataArray）；
setAdapter（myAdapter）；
setTextFilterEnabled（true）；
setOnItemClickListener（新的OnItemClickListener（）{
@凌驾
公共链接（AdapterView arg0、视图arg1、内部arg2、，
长arg3）{
系统输出打印项次（arg2+“--position”）；
}
});
}
@凌驾
公共布尔onCreateOptions菜单（菜单）{
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:hint="search..."
android:label="@string/app_name" />
public class ImageAdapter extends BaseAdapter implements Filterable
{
private Context context;
private ArrayList<String> originalData = null;
ArrayList<String> filteredData = null;
ValueFilter valueFilter = new ValueFilter();
public ImageAdapter(Context context, ArrayList<String> mobileValues)
{
this.context = context;
this.originalData = mobileValues;
this.filteredData = mobileValues;
}
@Override
public int getCount() {
return filteredData.size();
}
@Override
public Object getItem(int position) {
return filteredData.get(position);
}
@Override
public long getItemId(int position) {
return filteredData.indexOf(getItem(position));
}
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
if (convertView == null) {
gridView = new View(context);
// get layout from mobile.xml
gridView = inflater.inflate(R.layout.city_list_item, null);
// set value into textview
TextView textView = (TextView) gridView
.findViewById(R.id.grid_item_label);
textView.setText(originalData.get(position));
// set image based on selected text
// ImageView imageView = (ImageView)
// gridView.findViewById(R.id.grid_item_image);
// imageView.setImageResource(R.drawable.city_image);
} else {
gridView = (View) convertView;
}
return gridView;
}
@Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
@Override
public Filter getFilter() {
return valueFilter;
}
private class ValueFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toUpperCase();
FilterResults results = new FilterResults();
/*
* if (constraint != null && constraint.length() > 0) {
*/
final ArrayList<String> lst = ImageAdapter.this.originalData;
int count = lst.size();
final ArrayList<String> filterList = new ArrayList<String>(count);
String filterableString;
for (int i = 0; i < count; i++) {
filterableString = lst.get(i);
if ((filterableString.toUpperCase()).contains(filterString)) {
filterList.add(filterableString);
}
}
results.count = filterList.size();
results.values = filterList;
/* } *//*
* else { results.count = mStringFilterList.size();
* results.values = mStringFilterList; }
*/
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredData = (ArrayList<String>) results.values;
notifyDataSetChanged();
}
}
}
public class SecondActivity extends Activity {
// ArrayAdapter<String> myAdapter;
ImageAdapter myAdapter;
ListView listView;
// String[] dataArray = new String[] {"India","Androidhub4you", "Pakistan",
// "Srilanka", "Nepal", "Japan"};
private ArrayList<String> dataArray = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
dataArray.add("India");
dataArray.add("Androidhub4you");
dataArray.add("Pakistan");
dataArray.add("Srilanka");
dataArray.add("Nepal");
dataArray.add("Japan");
listView = (ListView) findViewById(R.id.listview);
// myAdapter = new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1, dataArray);
myAdapter = new ImageAdapter(SecondActivity.this, dataArray);
listView.setAdapter(myAdapter);
listView.setTextFilterEnabled(true);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
System.out.println(arg2 + " --postion");
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.second, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
.getActionView();
searchView.setSearchableInfo(searchManager
.getSearchableInfo(getComponentName()));
searchView.setIconifiedByDefault(false);
SearchView.OnQueryTextListener textChangeListener = new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextChange(String newText) {
// this is your adapter that will be filtered
myAdapter.getFilter().filter(newText);
System.out.println("on text chnge text: " + newText);
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
// this is your adapter that will be filtered
myAdapter.getFilter().filter(query);
System.out.println("on query submit: " + query);
return true;
}
};
searchView.setOnQueryTextListener(textChangeListener);
return super.onCreateOptionsMenu(menu);
}
}
TextView textView = (TextView) gridView.findViewById(R.id.grid_item_label);
textView.setText(originalData.get(position));
public View getView(int position, View convertView, ViewGroup parent) {
View gridView;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// gridView = new View(context); // this line is useless, you're overwriting the variable on the next line
// inflate new layout
// gridView = inflater.inflate(R.layout.city_list_item, null); // wrong
gridView = inflater.inflate(R.layout.city_list_item, parent, false); // right
} else {
// reuse previously created view
gridView = (View) convertView;
}
// set value into textview
TextView textView = (TextView) gridView.findViewById(R.id.grid_item_label);
textView.setText(originalData.get(position));
// set image based on selected text
//ImageView imageView = (ImageView) gridView.findViewById(R.id.grid_item_image);
//imageView.setImageResource(R.drawable.city_image);
// finding views all over again is not effective, google "viewholder"
return gridView;
}
textView.setText(getItem(position));