Today I'm going to share with you how to add Checkbox on your Listview and getting all selected values in your list.
IDE - Android Studio 1.0
Reference: BaseAdapter
Process Flow of the App:
Java codes that you needed:
1. Item.java
package com.example.user.listviewxcheckbox; public class Item { String name; boolean checkbox; public Item() { /*Empty Constructor*/ } public Item(String country, boolean status){ this.name = country; this.checkbox = status; } //Getter and Setter public String getName() { return name; } public void setName(String name) { this.name = name; } public boolean isCheckbox() { return checkbox; } public void setCheckbox(boolean checkbox) { this.checkbox = checkbox; } }
2. ItemSelectedAdapter.java
package com.example.user.listviewxcheckbox; import android.view.LayoutInflater; import java.util.ArrayList; import android.view.View; import android.view.ViewGroup; import android.content.Context; import android.widget.BaseAdapter; import android.widget.*; /** * Created by Eugene Alvizo on 12/26/2014. */ public class ItemSelectedAdapter extends BaseAdapter{ private Context activity; private ArrayList<item> data; private static LayoutInflater inflater = null; private View vi; private ViewHolder viewHolder; public ItemSelectedAdapter(Context context, ArrayList<Item><item> items) { this.activity = context; this.data = items; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public int getCount() { return data.size(); } @Override public Object getItem(int i) { return i; } @Override public long getItemId(int i) { return i; } @Override public View getView(int position, View view, ViewGroup viewGroup) { vi = view; //Populate the Listview final int pos = position; Item items = data.get(pos); if(view == null) { vi = inflater.inflate(R.layout.listview_item, null); viewHolder = new ViewHolder(); viewHolder.checkBox = (CheckBox) vi.findViewById(R.id.checkbox); viewHolder.name = (TextView) vi.findViewById(R.id.name); vi.setTag(viewHolder); }else viewHolder = (ViewHolder) view.getTag(); viewHolder.name.setText(items.getName()); if(items.isCheckbox()){ viewHolder.checkBox.setChecked(true); } else { viewHolder.checkBox.setChecked(false); } return vi; } public ArrayList<item> getAllData(){ return data; } public void setCheckBox(int position){ //Update status of checkbox Item items = data.get(position); items.setCheckbox(!items.isCheckbox()); notifyDataSetChanged(); } public class ViewHolder{ TextView name; CheckBox checkBox; } }
3. MainActivity.java
package com.example.user.listviewxcheckbox; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.Button; import android.widget.ListView; import android.widget.Toast; import java.util.ArrayList; public class MainActivity extends ActionBarActivity { private Item itemHandler; private ItemSelectedAdapter adapter; private ArrayList<item> itemList; private ListView listView; private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView =(ListView) findViewById(R.id.listview); button = (Button) findViewById(R.id.printbtn); setWidget(); } public void setWidget(){ //Adding data to ArrayList itemList = new ArrayList<Item><item>(); itemList.add(new Item("Philippines", false)); itemList.add(new Item("America", false)); itemList.add(new Item("Thailand", false)); itemList.add(new Item("Korea", false)); itemList.add(new Item("Japan", false)); itemList.add(new Item("China", false)); itemList.add(new Item("Australia", false)); itemList.add(new Item("Canada", false)); itemList.add(new Item("Italy", false)); itemList.add(new Item("Iraq", false)); //Setup Adapter for Listview adapter = new ItemSelectedAdapter(MainActivity.this,itemList); listView.setAdapter(adapter); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView adapterView, View view, int position, long l) { //Item Selected from list adapter.setCheckBox(position); } }); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //Display All Item Selected String countries = ""; for(Item hold: adapter.getAllData()){ if(hold.isCheckbox()){ countries += " " + hold.getName(); } } Toast.makeText(MainActivity.this,"Names: " + countries,Toast.LENGTH_SHORT).show(); } }); } }
1.activity_main.xml
<LinearLayout android:layout_height="match_parent" android:layout_width="match_parent" android:orientation="vertical" tools:context=".MainActivity" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"> <ListView android:id="@+id/listview" android:layout_height="514dp" android:layout_width="fill_parent"/> <Button android:id="@+id/printbtn" android:layout_height="fill_parent" android:layout_width="fill_parent" android:text="Print"/> </LinearLayout>
<?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="60dp" android:descendantFocusability="blocksDescendants"> <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" android:gravity="center"> <LinearLayout android:layout_width="0dp" android:layout_height="fill_parent" android:gravity="center_vertical" android:paddingLeft="30dp" android:layout_weight=".8"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Item" android:id="@+id/name" android:focusable="false"/> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight=".1"> <CheckBox android:layout_width="45dp" android:layout_height="45dp" android:checked="true" android:focusable="false" android:clickable="false" android:id="@+id/checkbox" /> </LinearLayout> </LinearLayout> </LinearLayout>
OUTPUT:
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