Galerie mit Filterfunktion (über Checkbox)- Sichtbarkeit Bilder auswählbar

package com.example.bildergalarie;




import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
 
@SuppressWarnings("deprecation")
public class MainActivity extends Activity {
//the images to display
Integer[] imageIDs = {
R.drawable.eins,
R.drawable.zwei,
R.drawable.drei,

};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Note that Gallery view is deprecated in Android 4.1---
Gallery gallery = (Gallery) findViewById(R.id.gallery1);
gallery.setAdapter(new ImageAdapter(this));
gallery.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position,long id)
{
Toast.makeText(getBaseContext(),"pic" + (position + 1) + " selected",
Toast.LENGTH_SHORT).show();
// display the images selected
ImageView imageView = (ImageView) findViewById(R.id.image1);
imageView.setImageResource(imageIDs[position]);
}
});
}
 
public class ImageAdapter extends BaseAdapter {
private Context context;
private int itemBackground;
public ImageAdapter(Context c)
{
context = c;
// sets a grey background; wraps around the images
TypedArray a =obtainStyledAttributes(R.styleable.MyGallery);
itemBackground = a.getResourceId(R.styleable.MyGallery_android_galleryItemBackground, 0);
a.recycle();
}
// returns the number of images
public int getCount() {
return imageIDs.length;
}
// returns the ID of an item
public Object getItem(int position) {
return position;
}
// returns the ID of an item
public long getItemId(int position) {
return position;
}
// returns an ImageView view
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(context);
imageView.setImageResource(imageIDs[position]);
imageView.setLayoutParams(new Gallery.LayoutParams(100, 100));
imageView.setBackgroundResource(itemBackground);
return imageView;
}
}
public void itemClicked(View v) {
    CheckBox checkBox1 = (CheckBox)v;
    
    if  (checkBox1.isChecked()){
        
        ImageView imageView1 = (ImageView) findViewById(R.drawable.eins);
        imageView1.setVisibility(View.VISIBLE);
        
    } else {
        ImageView imageView1 = (ImageView) findViewById(R.drawable.eins);
        imageView1.setVisibility(ImageView.GONE);
    }
}
}

<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="{relativePackage}.${activityClass}"
    android:orientation="vertical" >
 
    <Gallery
        android:id="@+id/gallery1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
 
    <ImageView
        android:id="@+id/image1"
        android:layout_width="215dp"
        android:layout_height="315dp"
        android:layout_gravity="center_horizontal"
        android:background="#cfcfcf"
        android:paddingTop="5dp"
        android:paddingBottom="5dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:src="@drawable/eins" />

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="22dp"
        android:onClick="itemClicked"
        android:text="CheckBox" />

</LinearLayout>

ImageView imageView1 = (ImageView) findViewById(R.id.image1);

public void onItemClick(AdapterView<?> parent, View v, [COLOR=Red]int position[/COLOR],long id)

public void itemClicked(View v)

gallery.setSelected(true);
gallery.setSelection([COLOR=Red]position[/COLOR]);

public void itemClicked(View v) {
    CheckBox checkBox1 = (CheckBox)v;
    
    if  (checkBox1.isChecked()){
        
        ImageView imageView1 = (ImageView) findViewById(R.id.image1);
        imageView1.setVisibility(View.VISIBLE);
        
    } else {
        ImageView imageView1 = (ImageView) findViewById(R.id.image1);
        imageView1.setVisibility(ImageView.GONE);
    }
}


public int onItemClick(AdapterView<?> parent, View v, int position,long id) {
 int [] position = new int [1] ;
}
public void itemClicked1(View v){
    gallery.setSelected(true);
    gallery.setSelection(position);
}