show checkbox image over another image onTouch or onClick in Gridview android

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I have got these three files that implement gridview. I need to access individual imageviews in the gridview and display an effect of being selected on click, without using an actual checkbox for that purpose.

gallery.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent">

<GridView android:id="@+id/gridview"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:paddingTop="15dip"
    android:columnWidth="160dp"
    android:numColumns="auto_fit"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="0dp"
    android:stretchMode="spacingWidthUniform"
    android:gravity="center"
    android:background="@drawable/screen_background_enabled"
/>

<Button android:id="@+id/selectBtn"
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"
        style="@style/CustomStyleButton"
        android:text="@string/select" 
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:minWidth="200dp" />

 </RelativeLayout>

Gallery.java

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.opengl.Visibility;
import android.os.Bundle;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.FrameLayout;
import android.widget.FrameLayout.LayoutParams;
import android.widget.Checkable;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

import com.csdc.myoffice.common.GlobalProperties;
import com.csdc.myoffice.data.ImageAdapter;
import com.csdc.myoffice.R;

public class Gallery extends Activity {

     GridView gridview;
     public int cnt;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gallery);

    gridview = (GridView) findViewById(R.id.gridview);
    gridview.setAdapter(new ImageAdapter(this));

    gridview.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            //Toast.makeText(Gallery.this, "" + position, Toast.LENGTH_SHORT).show();

             ImageView imageView = (ImageView) v;
             imageView.setVisibility(Visibility.GONE);


        }
    });
}

}   

ImageAdapter.java

import java.io.File;
import java.io.FilenameFilter;

import android.R;
import android.content.Context;
import android.net.Uri;
import android.os.Environment;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;


public class ImageAdapter extends BaseAdapter {
    private Context mContext;
    private static Uri[] mUrls;
    private static String[] mFiles;


    public ImageAdapter(Context c) {
        mContext = c;


       }


    public int getCount() {
      //  return mThumbIds.length;
        return getImages().length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {


        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(160,160));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);



            imageView.setBackgroundResource(R.color.background_dark);
   } else {

           imageView = (ImageView) convertView;
        }


        imageView.setImageURI(getImages()[position]);
        return imageView;
    }



public static Uri[] getImages(){

    String filePath = Environment.getExternalStorageDirectory().getAbsolutePath()+ "/abc";
    File images = new File(filePath);
    //File[] imageList = images.listFiles();
    File[] imageList = images.listFiles(new FilenameFilter() {

        public boolean accept(File dir, String filename) {
            // TODO Auto-generated method stub
            return (filename.endsWith(".jpg") || filename.endsWith(".jpeg") || filename.endsWith(".png") || filename.endsWith(".bmp") || filename.endsWith(".mp3") || filename.endsWith(".amr") || filename.endsWith(".mp4"));

        }
    });

    mFiles = new String[imageList.length];

    for(int i=0; i<imageList.length; i++)
        mFiles[i] = imageList[i].getAbsolutePath();


    mUrls = new Uri[mFiles.length];

    for(int i=0; i<mFiles.length; i++)
        mUrls[i] = Uri.parse(mFiles[i]);



    return mUrls;

}



}

asked 27 secs ago

Akash Gupta

139