Warning: file_get_contents(/data/phpspider/zhask/data//catemap/3/android/180.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Android 如何使用片段突出显示“Listview”中的“选定行”_Android_Listview_Fragment - Fatal编程技术网

Android 如何使用片段突出显示“Listview”中的“选定行”

Android 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

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/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
}