Android:SearchView:如何为建议列表中的每个项目设置单独的图标?
我的片段:Android:SearchView:如何为建议列表中的每个项目设置单独的图标?,android,Android,我的片段: SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE); searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName())); searchView.setSuggestionsAdapter(new Search
SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
searchView.setSuggestionsAdapter(new SearchCategorySuggestionsAdapter(getActivity()));
此处显示适配器代码:
public class SearchCategorySuggestionsAdapter extends SimpleCursorAdapter {
private static final String[] columnNamesArray = {"_id", Category.ID, Category.NAME, ImageSource.URL};
private static final String[] visibleColumnNamesArray = {Category.NAME};
private static final int[] idsArray = {R.id.catalogNameTextView};
private final static String TAG = SearchCategorySuggestionsAdapter.class.getName();
public SearchCategorySuggestionsAdapter(Context context) {
super(context, R.layout.search_catalog_suggestion_item, null, visibleColumnNamesArray, idsArray, 0);
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
return new SuggestionsCursor(constraint);
}
private static class SuggestionsCursor extends AbstractCursor {
private List<Category> findCatagoriesList = new ArrayList<>();
private SuggestionsCursor(CharSequence constraint) {
if (constraint != null) {
findCatagoriesList = CategoryService.getCategoriesList(constraint.toString());
}
}
@Override
public int getCount() {
return findCatagoriesList.size();
}
@Override
public String[] getColumnNames() {
return columnNamesArray;
}
@Override
public String getString(int column) {
int rowNumber = getPosition();
Category category = findCatagoriesList.get(rowNumber);
if (column == getColumnIndex(Category.ID)) {
return category.getId() + "";
}
return LocalizedStringUtil.getLocalizedStringValue(category.getName());
}
@Override
public short getShort(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public int getInt(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public long getLong(int column) {
return 0;
}
@Override
public float getFloat(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public double getDouble(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean isNull(int column) {
// TODO Auto-generated method stub
return false;
}
}
}
公共类SearchCategorySughtationsAdapter扩展了SimpleCorsAdapter{
私有静态最终字符串[]columnNamesArray={“\u id”,Category.id,Category.NAME,ImageSource.URL};
私有静态最终字符串[]visibleColumnNamesArray={Category.NAME};
私有静态final int[]idsArray={R.id.catalogNameTextView};
private final static String TAG=SearchCategorySuggestionsAdapter.class.getName();
公共搜索类别建议适配器(上下文){
super(context,R.layout.search\u catalog\u suggestion\u item,null,visibleColumnNamesArray,idsArray,0);
}
@凌驾
公共游标runQueryOnBackgroundThread(CharSequence约束){
返回新的SuggestionsCursor(约束);
}
私有静态类SuggestionsCursor扩展了AbstractCursor{
private List findCatagoriesList=new ArrayList();
私有建议游标(CharSequence约束){
if(约束!=null){
findCatagoriesList=CategoryService.getCategoriesList(constraint.toString());
}
}
@凌驾
public int getCount(){
返回findCatagoriesList.size();
}
@凌驾
公共字符串[]getColumnNames(){
返回列数组;
}
@凌驾
公共字符串getString(int列){
int rowNumber=getPosition();
Category Category=findCatagoriesList.get(rowNumber);
if(column==getColumnIndex(Category.ID)){
return category.getId()+“”;
}
返回LocalizedStringUtil.getLocalizedStringValue(category.getName());
}
@凌驾
公共短getShort(int列){
//TODO自动生成的方法存根
返回0;
}
@凌驾
公共整数getInt(整数列){
//TODO自动生成的方法存根
返回0;
}
@凌驾
公共长getLong(int列){
返回0;
}
@凌驾
公共浮点getFloat(int列){
//TODO自动生成的方法存根
返回0;
}
@凌驾
公共双精度getDouble(int列){
//TODO自动生成的方法存根
返回0;
}
@凌驾
公共布尔值为空(int列){
//TODO自动生成的方法存根
返回false;
}
}
}
此处搜索\u目录\u建议\u item.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="@dimen/standard_min_height_container">
<ImageView
android:id="@+id/catalogImageView"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:src="@drawable/suggestion_icon"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_goneMarginStart="@dimen/standard_margin" />
<TextView
android:id="@+id/catalogNameTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:text="Test text View Test text "
android:textColor="@android:color/black"
android:textSize="15sp"
app:layout_constraintBottom_toBottomOf="@+id/catalogImageView"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/catalogImageView"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="@+id/catalogImageView" />
<View
android:id="@+id/divderTextView"
android:layout_width="0dp"
android:layout_height="1dp"
android:background="@color/divider_color"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="@+id/catalogImageView"
app:layout_constraintRight_toRightOf="@+id/catalogNameTextView" />
</android.support.constraint.ConstraintLayout>
正如您所看到的,serachView的建议列表中的所有项目都有相同的图标
嗯。这是工作。好的
但现在我需要为它建议列表中的每个项目设置特定的图标。
在本例中:行“健康”必须有一个图标,花园和DIY”另一个图标,依此类推
如何在建议列表中执行此操作?这里是我的解决方案:
public class SearchCategorySuggestionsAdapter extends SimpleCursorAdapter {
// The Cursor must include a column named _id or this class will not work.
private static final String[] columnNamesArray = {"_id", Category.ID, ImageSource.URL, Category.NAME};
private static final String[] visibleColumnNamesArray = {ImageSource.URL, Category.NAME};
private static final int[] idsArray = {R.id.categoryNameTextView};
private final static String TAG = SearchCategorySuggestionsAdapter.class.getName();
public SearchCategorySuggestionsAdapter(Context context) {
// use custom layout because can not change text color on suggestion list by style.xml
super(context, R.layout.search_category_suggestion_item, null, visibleColumnNamesArray, idsArray, 0);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.search_category_suggestion_item, parent, false);
ViewHolder viewHolder = new ViewHolder(rowView);
rowView.setTag(viewHolder);
return rowView;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
super.bindView(view, context, cursor);
final ViewHolder viewHolder = (ViewHolder) view.getTag();
String referenceUrl = cursor.getString(2);
String name = cursor.getString(3);
viewHolder.categoryNameTextView.setText(name);
Glide.with(context).load(referenceUrl).into(viewHolder.categoryImageView);
}
// Call on every press key. Constraint = null until constraint.length >= android:searchSuggestThreshold
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
Debug.d(TAG, "runQueryOnBackgroundThread: constraint = " + constraint);
return new SuggestionsCursor(constraint);
}
private static class SuggestionsCursor extends AbstractCursor {
private List<Category> findCatagoriesList = new ArrayList<>();
private SuggestionsCursor(CharSequence constraint) {
Debug.d(TAG, "SuggestionsCursor(), constraint = " + constraint);
if (constraint != null) {
findCatagoriesList = CategoryService.getCategoriesList(constraint.toString());
}
}
@Override
public int getCount() {
return findCatagoriesList.size();
}
@Override
public String[] getColumnNames() {
return columnNamesArray;
}
@Override
public String getString(int column) {
int row = getPosition();
Category category = findCatagoriesList.get(row);
if (column == getColumnIndex(Category.ID)) {
Debug.d(TAG, "getString: ---> category.getId()");
return category.getId() + "";
}
String text = "";
if (column == 2) {
text = category.getImage().getFormats().getReference().getUrl();
} else if (column == 3) {
text = LocalizedStringUtil.getLocalizedStringValue(category.getName());
}
return text;
}
@Override
public short getShort(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public int getInt(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public long getLong(int column) {
return 0;
}
@Override
public float getFloat(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public double getDouble(int column) {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean isNull(int column) {
// TODO Auto-generated method stub
return false;
}
}
private static class ViewHolder {
private ImageView categoryImageView;
private TextView categoryNameTextView;
private ViewHolder(View view) {
//ButterKnife.bind(this, view);
categoryImageView = view.findViewById(R.id.categoryImageView);
categoryNameTextView = view.findViewById(R.id.categoryNameTextView);
}
}
}
公共类SearchCategorySughtationsAdapter扩展了SimpleCorsAdapter{
//游标必须包含名为_id的列,否则此类将无法工作。
私有静态最终字符串[]columnNamesArray={“\u id”,Category.id,ImageSource.URL,Category.NAME};
私有静态最终字符串[]visibleColumnNamesArray={ImageSource.URL,Category.NAME};
私有静态final int[]idsArray={R.id.categoryNameTextView};
private final static String TAG=SearchCategorySuggestionsAdapter.class.getName();
公共搜索类别建议适配器(上下文){
//使用自定义布局,因为无法通过style.xml更改建议列表上的文本颜色
super(context,R.layout.search\u category\u suggestion\u item,null,visibleColumnNamesArray,idsArray,0);
}
@凌驾
公共视图newView(上下文上下文、光标、视图组父对象){
LayoutFlater充气器=(LayoutFlater)context.getSystemService(context.LAYOUT\u充气器\u服务);
视图行视图=充气机。充气(R.layout.search\u category\u suggestion\u item,parent,false);
ViewHolder ViewHolder=新的ViewHolder(行视图);
rowView.setTag(viewHolder);
返回行视图;
}
@凌驾
公共void bindView(视图、上下文上下文、光标){
super.bindView(视图、上下文、光标);
final ViewHolder ViewHolder=(ViewHolder)view.getTag();
字符串引用URL=cursor.getString(2);
String name=cursor.getString(3);
viewHolder.categoryNameTextView.setText(名称);
Glide.with(context).load(referenceUrl).into(viewHolder.categoryImageView);
}
//每次按键时调用。Constraint=null直到Constraint.length>=android:searchSuggestThreshold
@凌驾
公共游标runQueryOnBackgroundThread(CharSequence约束){
Debug.d(标记,“runQueryOnBackgroundThread:constraint=“+constraint”);
返回新的SuggestionsCursor(约束);
}
私有静态类SuggestionsCursor扩展了AbstractCursor{
private List findCatagoriesList=new ArrayList();
私有建议游标(CharSequence约束){
Debug.d(标记,“SuggestionsCursor(),constraint=“+constraint”);
if(约束!=null){
findCatagoriesList=CategoryService.getCategoriesList(constraint.toString());
}
}
@凌驾
public int getCount(){
返回findCatagoriesList.size();
}
@凌驾
公共字符串[]getColumnNames(){
返回列数组;
}
@凌驾
公共字符串getString(int列){
int row=getPosition();
Category Category=findCatagoriesList.get(行);
if(column==getColumnIndex(Category.ID)){
Debug.d(标记“getString:-->category.getId()”;