Android 如何使用片段突出显示“Listview”中的“选定行”
我创建了一个作为菜单的listview。当用户选择一个特定的菜单时,另一个片段将显示在右侧部分 请看这张图片: 问题是,图标和标题仅高亮显示,而不是整个选定行。如何突出显示选定行而不是仅显示图标和标题 这是我的代码: fragment_inventory_list.xmlAndroid 如何使用片段突出显示“Listview”中的“选定行”,android,listview,fragment,Android,Listview,Fragment,我创建了一个作为菜单的listview。当用户选择一个特定的菜单时,另一个片段将显示在右侧部分 请看这张图片: 问题是,图标和标题仅高亮显示,而不是整个选定行。如何突出显示选定行而不是仅显示图标和标题 这是我的代码: fragment_inventory_list.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/a
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".InventoryListFragment"
android:layout_marginTop="@dimen/padding_50"
android:orientation="vertical"
android:background="?android:attr/activatedBackgroundIndicator">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ListView
android:id="@+id/inventorylist_listview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:choiceMode="singleChoice"
android:listSelector="@color/light_gray"/>
</LinearLayout>
</LinearLayout>
InventoryListFragment.java
package com.example.devcash;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
import com.example.devcash.CustomAdapters.InventoryListAdapter;
import com.example.devcash.Fragments.CategoriesFragment;
import com.example.devcash.Fragments.DiscountsFragment;
import com.example.devcash.Fragments.ProductsFragment;
import com.example.devcash.Fragments.ServicesFragment;
import com.example.devcash.Lists.InventoryList;
import java.util.ArrayList;
/**
* A simple {@link Fragment} subclass.
*/
public class InventoryListFragment extends Fragment implements AdapterView.OnItemClickListener {
ListView lvinventory;
ArrayList<InventoryList> list = new ArrayList<InventoryList>();
InventoryListAdapter adapter;
public InventoryListFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_inventory_list, container, false);
lvinventory = (ListView) view.findViewById(R.id.inventorylist_listview);
adapter = new InventoryListAdapter(getActivity(),list);
list.add(new InventoryList(R.drawable.ic_product,"Products"));
list.add(new InventoryList(R.drawable.ic_services,"Services"));
list.add(new InventoryList(R.drawable.ic_category, "Categories"));
list.add(new InventoryList(R.drawable.ic_local_offer,"Discounts"));
lvinventory.setAdapter(adapter);
lvinventory.setOnItemClickListener(this);
return view;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
InventoryList selectedList = this.list.get(position);
int icon = selectedList.getIcon();
String title = selectedList.getInventory_title();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
switch (position){
case 0:
ProductsFragment productsFragment = new ProductsFragment();
fragmentTransaction.add(R.id.inventorylist_fragmentcontainer, productsFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
break;
case 1:
ServicesFragment servicesFragment = new ServicesFragment();
fragmentTransaction.add(R.id.inventorylist_fragmentcontainer, servicesFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
break;
case 2:
CategoriesFragment categoriesFragment = new CategoriesFragment();
fragmentTransaction.add(R.id.inventorylist_fragmentcontainer, categoriesFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
break;
case 3:
DiscountsFragment discountsFragment = new DiscountsFragment();
fragmentTransaction.add(R.id.inventorylist_fragmentcontainer, discountsFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
break;
}
}
}
package com.example.devcash;
导入android.os.Bundle;
导入android.support.annotation.NonNull;
导入android.support.annotation.Nullable;
导入android.support.v4.app.Fragment;
导入android.support.v4.app.FragmentManager;
导入android.support.v4.app.FragmentTransaction;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.AdapterView;
导入android.widget.ListView;
导入android.widget.Toast;
导入com.example.devcash.CustomAdapters.InventoryListAdapter;
导入com.example.devcash.Fragments.CategoriesFragment;
导入com.example.devcash.Fragments.DiscountsFragment;
导入com.example.devcash.Fragments.ProductsFragment;
导入com.example.devcash.Fragments.ServicesFragment;
导入com.example.devcash.Lists.InventoryList;
导入java.util.ArrayList;
/**
*一个简单的{@link Fragment}子类。
*/
公共类InventoryListFragment扩展片段实现AdapterView.OnItemClickListener{
清单视图;
ArrayList=新建ArrayList();
目录列表适配器;
公共InventoryListFragment(){
//必需的空公共构造函数
}
@凌驾
创建视图上的公共视图(布局、充气机、视图组容器、,
Bundle savedInstanceState){
视图=充气机。充气(R.layout.fragment\u inventory\u list,container,false);
lvinventory=(ListView)view.findViewById(R.id.inventorylist\u ListView);
适配器=新的InventoryListAdapter(getActivity(),list);
添加(新的库存清单(R.drawable.ic_产品,“产品”);
添加(新的清单(R.drawable.ic_服务,“服务”);
添加(新的库存清单(R.drawable.ic_类别,“类别”);
添加(新的库存清单(R.drawable.ic_local_offer,“折扣”);
lvinventory.setAdapter(适配器);
lvinventory.setonicmclicklistener(此);
返回视图;
}
@凌驾
已创建公用void onview(@NonNull视图,@Nullable Bundle savedInstanceState){
super.onViewCreated(视图,savedInstanceState);
}
@凌驾
public void onItemClick(AdapterView父对象、视图、整型位置、长id){
InventoryList selectedList=this.list.get(位置);
int icon=selectedList.getIcon();
字符串标题=selectedList.getInventory_title();
FragmentManager FragmentManager=getFragmentManager();
FragmentTransaction FragmentTransaction=fragmentManager.beginTransaction();
开关(位置){
案例0:
ProductsFragment ProductsFragment=新产品片段();
fragmentTransaction.add(R.id.inventorylist\U fragmentcontainer,productsFragment);
fragmentTransaction.addToBackStack(空);
fragmentTransaction.commit();
打破
案例1:
ServicesFragment ServicesFragment=新ServicesFragment();
fragmentTransaction.add(R.id.inventorylist\U fragmentcontainer,servicesFragment);
fragmentTransaction.addToBackStack(空);
fragmentTransaction.commit();
打破
案例2:
CategoriesFragment CategoriesFragment=新的CategoriesFragment();
fragmentTransaction.add(R.id.inventorylist\u fragmentcontainer,categoriesFragment);
fragmentTransaction.addToBackStack(空);
fragmentTransaction.commit();
打破
案例3:
折扣片段折扣片段=新折扣片段();
fragmentTransaction.add(R.id.inventorylist\U fragmentcontainer,折扣片段);
fragmentTransaction.addToBackStack(空);
fragmentTransaction.commit();
打破
}
}
}
在适配器getView()
中,只需添加一个单击侦听器并设置背景色
@Override
public View getView(int position, View convertView, ViewGroup parent) {
....
....
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
view.setBackgroundColor(Color.GREY);
}
});
....
....
return view;
}
在适配器
getView()
中,只需添加一个单击侦听器并设置背景色
@Override
public View getView(int position, View convertView, ViewGroup parent) {
....
....
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
view.setBackgroundColor(Color.GREY);
}
});
....
....
return view;
}
试试这个
private class InventoryListAdapter extends ... {
private int focusedPosition = -1; // -1 means nothing is selected
....
....
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
if (position == focusedPosition) {
view.setBackgroundColor(/* your selected color */);
} else {
view.setBackgroundColor(/* your NOT selected color */);
}
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
focusedPosition = position;
notifyDataSetChanged();
}
});
return view;
}
试试这个
private class InventoryListAdapter extends ... {
private int focusedPosition = -1; // -1 means nothing is selected
....
....
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
if (position == focusedPosition) {
view.setBackgroundColor(/* your selected color */);
} else {
view.setBackgroundColor(/* your NOT selected color */);
}
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
focusedPosition = position;
notifyDataSetChanged();
}
});
return view;
}
我建议使用
recyclerview
而不是listview
,比如@Ferran已经回答了listview
public class AdapterClass extends RecyclerView.Adapter<AdapterClass.ViewHolder> {
private int selected_position = -1;
@Override
public void onBindViewHolder(PlacesLocationAdapter.ViewHolder holder, final int position) {
if (selected_position == position) {
// do your stuff here like
//Change selected item background color and Show sub item views
} else {
// do your stuff here like
//Change unselected item background color and Hide sub item views
}
// rest of the code here
holder.linelayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(selected_position==position){
selected_position=-1;
notifyDataSetChanged();
return;
}
selected_position = position;
notifyDataSetChanged();
}
});
//rest of the code here
}
}
对于recyclerview
public class AdapterClass extends RecyclerView.Adapter<AdapterClass.ViewHolder> {
private int selected_position = -1;
@Override
public void onBindViewHolder(PlacesLocationAdapter.ViewHolder holder, final int position) {
if (selected_position == position) {
// do your stuff here like
//Change selected item background color and Show sub item views
} else {
// do your stuff here like
//Change unselected item background color and Hide sub item views
}
// rest of the code here
holder.linelayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(selected_position==position){
selected_position=-1;
notifyDataSetChanged();
return;
}
selected_position = position;
notifyDataSetChanged();
}
});
//rest of the code here
}
}
公共类适配器类扩展了RecyclerView.Adapter{
选择的私有int_位置=-1;
@凌驾
public void onBindViewHolder(PlacesLocationAdapter.ViewHolder,最终int位置){
如果(所选位置==位置){
//你在这里做什么
//更改选定项目背景色并显示子项目视图
}否则{
//你在这里做什么
//更改未选定的项目背景色并隐藏子项目视图
}
//剩下的代码在这里
holder.linelayout.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图){
如果(所选位置==位置){
所选位置=-1;
notifyDataSetChanged();
返回;
}
所选位置=位置;
notifyDataSetChanged();
}
});
//剩下的代码在这里
}
}
我建议使用recy
if (list.get(position).getIsSelected().equals("1")) {
view.setBackgroundColor(/* your selected color */); // Gray
} else {
view.setBackgroundColor(/* your NOT selected color */); // White
}