Android Tutorial Code: August 2014

Hello Friends,

This tutorial shows you how to add android check box in a list view. We will develop custom adapter to populate our android list view with check box and search record from list view.

Out Put :

Step 1: selector_checkbox.xml

<?xml version="1.0" encoding="utf-8"?>

</selector>

Step 2: Create main.xml :

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="@android:color/white"

android:focusableInTouchMode="true"

android:orientation="vertical" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:gravity="center_vertical"

android:orientation="horizontal" >

<EditText

android:id="@+id/edtSearch"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_marginLeft="10dp"

android:layout_marginRight="5dp"

android:layout_weight="1"

android:drawableLeft="@drawable/ic_search"

android:drawablePadding="5dp"

android:focusableInTouchMode="true"

android:gravity="center_vertical"

android:hint="Search"

android:inputType="text"

android:singleLine="true"

android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

<ListView

android:id="@+id/listview"

android:layout_width="fill_parent"

android:layout_height="0dp"

android:layout_weight="1"

android:cacheColorHint="@android:color/transparent"

android:paddingTop="5dp" />

<Button

android:id="@+id/btnDone"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Done" />

</LinearLayout>

Step 3: Create row_item.xml :

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:gravity="center_vertical" >

<LinearLayout

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_weight="1"

android:gravity="center_vertical"

android:orientation="vertical"

android:padding="10dp" >

<TextView

android:id="@+id/txtItemName"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:ellipsize="end"

android:singleLine="true"

android:text="@string/app_name"

android:textAppearance="?android:attr/textAppearanceMedium"

android:textColor="@android:color/black" />

</LinearLayout>

<ImageView

android:id="@+id/imgvCheck"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_gravity="center"

android:contentDescription="@string/app_name"

android:paddingRight="10dp"

android:src="@drawable/selector_checkbox" />

</LinearLayout>

Step 4: Create class ItemBean.java:

public class ItemBean

{

public String ItemName;

public boolean isSelected ;

public String getItemName()

{

return ItemName;

}

public void setItemName(String displayName)

{

this.ItemName = displayName;

}

public boolean isSelected()

{

return isSelected;

}

public void setSelected(boolean isSelected)

{

this.isSelected = isSelected;

}

Step 5: Create ItemAdapter.java :

import java.util.ArrayList;

import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.TextView;

public class ItemAdapter extends BaseAdapter

{

private Context mContext;

private LayoutInflater inflater;

public List<ItemBean> arraylistData = null;

private ArrayList<ItemBean> arraylist;

public ItemAdapter(Context context, List<ItemBean> listbean)

{

mContext = context;

this.arraylistData = listbean;

inflater = LayoutInflater.from(mContext);

this.arraylist = new ArrayList<ItemBean>();

this.arraylist.addAll(listbean);

}

public class ViewHolder

{

TextView txtItemName;

ImageView imgvCheck;

}

@Override

public int getCount()

{

return arraylistData.size();

}

@Override

public ItemBean getItem(int position)

{

return arraylistData.get(position);

}

@Override

public long getItemId(int position)

{

return position;

}

public View getView(final int position, View view, ViewGroup parent)

{

final ViewHolder holder;

if (view == null)

{

holder = new ViewHolder();

view = inflater.inflate(R.layout.row_item, null);

holder.txtItemName = (TextView) view.findViewById(R.id.txtItemName);

holder.imgvCheck = (ImageView) view.findViewById(R.id.imgvCheck);

view.setTag(holder);

}

else

{

holder = (ViewHolder) view.getTag();

}

// Set data to view=================================================

try

{

ItemBean bean = arraylistData.get(position);

if (bean.isSelected)

holder.imgvCheck.setSelected(true);

else

holder.imgvCheck.setSelected(false);

holder.txtItemName.setText(bean.getItemName());

view.setOnClickListener(new View.OnClickListener()

{

public void onClick(View v)

{

for (int i = 0; i < arraylistData.size(); i++)

{

ItemBean bean = arraylistData.get(position);

if (i == position)

{

if(bean.isSelected())

{

bean.setSelected(false);

}

else

{

bean.setSelected(true);

}

notifyDataSetChanged();

}

});

holder.imgvCheck.setTag(bean);

}

catch (Exception e)

{

e.printStackTrace();

}

return view;

}

// Filter Class

public void filter(String charText)

{

charText = charText.toLowerCase();

arraylistData.clear();

if (charText.length() == 0)

{

arraylistData.addAll(arraylist);

}

else

{

for (ItemBean contact : arraylist)

{

if (contact.getItemName().toLowerCase().contains(charText))

{

arraylistData.add(contact);

}

notifyDataSetChanged();

}

Step 6: MainActivity.java :

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener

{

private ListView listview;

private ItemAdapter adapter;

private EditText editsearch;

private ArrayList<ItemBean> arrlistItems = new ArrayList<ItemBean>();

int selectionCount=0;

private Button btnDone;

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.layout_main);

initializeViews();

//Add data in arraylist

for (int i = 0; i < 10; i++)

{

ItemBean bean=new ItemBean();

bean.setItemName("Item " + (i));

arrlistItems.add(bean);

}

adapter = new ItemAdapter(MainActivity.this, arrlistItems);

listview.setAdapter(adapter);

}

// views=========================================

void initializeViews()

{

listview = (ListView) findViewById(R.id.listview);

editsearch = (EditText) findViewById(R.id.edtSearch);

btnDone=(Button) findViewById(R.id.btnDone);

btnDone.setOnClickListener(this);

// Search contact like text enter in edit text.

editsearch.addTextChangedListener(new TextWatcher()

{

@Override

public void afterTextChanged(Editable arg0)

{

String text = editsearch.getText().toString().toLowerCase();

adapter.filter(text);

}

@Override

public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3)

{

}

@Override

public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3)

{

}

});

}

@Override

public void onClick(View v)

{

switch (v.getId())

{

case R.id.btnDone:

ArrayList<ItemBean> arrayList=new ArrayList<ItemBean>();

ArrayList<ItemBean> arraydata = (ArrayList<ItemBean>) adapter.arraylistData;

for (int i = 0; i < arraydata.size(); i++)

{

ItemBean bean = arraydata.get(i);

if (bean.isSelected)

{

arrayList.add(arraydata.get(i));

}

Toast.makeText(MainActivity.this, "Selected count = "+arrayList.size(), Toast.LENGTH_SHORT).show();

break;

default:

break;

}

I will be happy if you will provide your feedback or follow this blog. Any suggestion and help will be appreciated.

Thank you :)

Android Tutorial Code

11 Aug 2014

Checkbox Listview | custom listview with checkbox in android