Custom Gridview with Multiple radiobutton with Single Selection in Android

row_file.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <RadioButton
        android:id="@+id/radioButton1"
        android:layout_width="wrap_content"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:layout_height="wrap_content"
         />

    <TextView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/radioButton1"
         />

</RelativeLayout>





MainActivity.Java

 package com.example.china;

import java.io.IOException;
import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.GridView;
import android.widget.RadioButton;
import android.widget.Toast;

public class MainActivity extends Activity {

    private Adapter gAdapter;
    private GridView gBankLogo;
    private int lastPosition = -1;
    private View lastView;
  
    ArrayList<ParserCategory>mList;
    DatabaseConnectionAPI mApi;
    Button mButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gBankLogo = (GridView)findViewById(R.id.gridView1);
        mButton=(Button)findViewById(R.id.btn);
        mButton.setOnClickListener(new View.OnClickListener() {
          
            @Override
            public void onClick(View v) {
              
                int count =  gBankLogo.getChildCount();

                System.out.println("Count "+count);
                for (int i = 0; i < count; i++) {
                    ViewGroup gridChild = (ViewGroup) gBankLogo.getChildAt(i);
                    RadioButton checkbox = (RadioButton)gridChild.findViewById(R.id.radioButton1);
                    if(checkbox.isChecked())
                    {
                        Log.d("Item "+String.valueOf(i), checkbox.getTag().toString());
                        System.out.println("ITEEMERM  "+String.valueOf(i)+checkbox.getTag().toString());
                        Toast.makeText(MainActivity.this,checkbox.getTag().toString() ,2000).show();
                    }
                }
            }
        });
        mApi=new DatabaseConnectionAPI(getApplicationContext());
        try {
            mApi.createDataBase();
              mApi.openDataBase();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    
        mList=mApi.getCategoryData();
      
      
        gAdapter = new Adapter(this,mList);
      //TEST
        for (int i = 0; i < mList.size(); i++) {
             String bank = "";
             gAdapter.addObject("bank"+i, bank);
        }    
        gBankLogo.setAdapter(gAdapter);
        gBankLogo.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (lastPosition == position)
                    return;
                if (lastPosition != position) {
                    if (lastPosition == -1) {
                        RadioButton tmp = (RadioButton) view.findViewById(R.id.radioButton1);
                        tmp.setChecked(true);
                        lastView = view;
                        lastPosition = position;
                    } else {
                        RadioButton tmp = (RadioButton) view.findViewById(R.id.radioButton1);
                        tmp.setChecked(true);
                        RadioButton tmp1 = (RadioButton) lastView.findViewById(R.id.radioButton1);
                        tmp1.setChecked(false);
                        lastView = view;
                        lastPosition = position;
                    }
                }
            }
        });     
    }
}
 Adapter.Java
 import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.RadioButton;
import android.widget.TextView;

public class Adapter extends BaseAdapter {
    private ViewHolder holder;
    private LayoutInflater mLayoutInflater;
    private static Map<String, Object> M = new HashMap<String, Object>();
    private static List<String> L = new ArrayList<String>();
    ArrayList<ParserCategory>mList;
    Activity mActivity;  
    public Adapter(Context context) {
        mLayoutInflater = LayoutInflater.from(context);

    }

    public Adapter(MainActivity mainActivity, ArrayList<ParserCategory> mList) {
        // TODO Auto-generated constructor stub
        mActivity=mainActivity;
        this.mList=mList;
    }

    public void addObject(String key, String bank) {
        if (!L.contains(key)) {
            L.add(key);
        }
        M.put(key, bank);
        this.notifyDataSetChanged();
    }

    public void removeObject(String key) {
        M.remove(key);
        L.remove(key);
        this.notifyDataSetChanged();
    }

    public void removeAllObject() {
        if (getCount() != 0) {
            M.clear();
            L.clear();
            this.notifyDataSetChanged();
        }
    }

    public void removeAllSelect() {
        if (getCount() != 0) {
            holder.rSelect.setChecked(false);
            this.notifyDataSetChanged();
        }
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
//        return mList.get(L.get(position));
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        if (convertView == null) {
            holder = new ViewHolder();
          
            LayoutInflater inflater = (LayoutInflater) mActivity
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        
        
                if (convertView == null) {
                    convertView = inflater.inflate(R.layout.item_msgbanklogo, null);
                }
//            convertView = mLayoutInflater.inflate(R.layout.item_msgbanklogo,null);
            holder.mTextView = (TextView) convertView
                    .findViewById(R.id.imageView1);
            holder.rSelect = (RadioButton) convertView
                    .findViewById(R.id.radioButton1);
            holder.mTextView.setText(mList.get(position).getCname());
             holder.rSelect.setTag(mList.get(position).getCname());
            holder.mTextView.setClickable(false);
            holder.rSelect.setClickable(false);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        return convertView;
    }
}
 ViewHolder.java

public class ViewHolder {
    TextView mTextView;
    RadioButton rSelect;
}