Myujth

I am using a custom gridview adapter to show images with volley singleton. But when I run it it returns the onErrorResponse. It looks like the adapter is not even set properly, is it something with where i set the adapter? I have tried setting it in onCreate but same error.

The adapter class looked fine so I think the problem is in MainActivity.

MainActivity.java:

public class MainActivity extends AppCompatActivity 

private final int THUMBNAIL_SIZE = 250;
private final String KEY = "IMAGE";
ArrayList<Bitmap> bitmaps = new ArrayList<Bitmap>();
private static final String URLS = 
 "http://10.0.2.2/Android%20A4_1/germany.png",
 "http://10.0.2.2/Android%20A4_1/indonesia.png",
 "http://10.0.2.2/Android%20A4_1/japan.png",
 "http://10.0.2.2/Android%20A4_1/sarawak.png",
 "http://10.0.2.2/Android%20A4_1/singapore.png",
 "http://10.0.2.2/Android%20A4_1/switzerland.png",
;


@Override
protected void onCreate(Bundle savedInstanceState) 
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);



 for(int i = 0; i<URLS.length; i++) 
 LoadingImages(URLS[i]);
 


private void LoadingImages(String url) 
 ImageLoader imageLoader = MySingleton.getInstance(getApplicationContext()).getImageLoader();
 imageLoader.get(url, new ImageLoader.ImageListener() 
 @Override
 public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate) 
 Bitmap image = response.getBitmap();
 Bitmap thumbnail = ThumbnailUtils.extractThumbnail(image, THUMBNAIL_SIZE, THUMBNAIL_SIZE);
 bitmaps.add(thumbnail);

 GridView gridView = (GridView)findViewById(R.id.grid_layout);

 final ImageAdapter imageAdapter = new ImageAdapter(MainActivity.this, bitmaps);
 gridView.setAdapter(imageAdapter);

 gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() 
 @Override
 public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) 
 Intent intent = new Intent(getApplicationContext(), Main2Activity.class);
 intent.putExtra(KEY, URLS[i]);
 startActivity(intent);
 
 );
 

 @Override
 public void onErrorResponse(VolleyError error) 
 Log.e("error", error.getMessage());
 
 );

The Adapter class:

public class ImageAdapter extends BaseAdapter 
private Context mContext;
private ArrayList<Bitmap> bitmaps;

public ImageAdapter(Context context, ArrayList<Bitmap> bitmaps) 
 this.mContext = context;
 this.bitmaps = bitmaps;


@Override
public int getCount() 
 return 0;


@Override
public Object getItem(int i) 
 return null;


@Override
public long getItemId(int i) 
 return 0;


@Override
public View getView(int i, View view, ViewGroup viewGroup) 


 if (view == null) 
 final LayoutInflater layoutInflater = LayoutInflater.from(mContext);
 view = layoutInflater.inflate(R.layout.griditems, null);
 MyViewHolder myViewHolder = new MyViewHolder(view);
 view.setTag(myViewHolder);
 
 MyViewHolder myViewHolder = (MyViewHolder)view.getTag();
 myViewHolder.img.setImageBitmap(bitmaps.get(i));

 return view;


public class MyViewHolder 
 public ImageView img;

 public MyViewHolder(View view) 
 img = view.findViewById(R.id.image1);
 

My Singleton:

public class MySingleton 
private static MySingleton instance;
private RequestQueue requestQueue;
private ImageLoader imageLoader;
private static Context context;

private MySingleton(Context context)
 this.context = context;
 requestQueue = Volley.newRequestQueue(context);
 imageLoader = new ImageLoader(requestQueue, new ImageLoader.ImageCache() 
 private final LruCache<String, Bitmap> cache = new LruCache<>(6);
 @Override
 public Bitmap getBitmap(String url) 
 Bitmap bmp = cache.get(url);
 if (bmp == null) 
 System.out.println("Not in cache");
 else 
 System.out.println("In cache");
 

 return bmp;
 

 @Override
 public void putBitmap(String url, Bitmap bitmap) 
 System.out.println("Put in cache");
 cache.put(url, bitmap);
 
 );


public static synchronized MySingleton getInstance(Context context) 
 if (instance == null) 
 instance = new MySingleton(context);
 
 return instance;


public ImageLoader getImageLoader() 
 return imageLoader;

Main2Activity:

public class Main2Activity extends AppCompatActivity 

private ImageView imageView;
private final String KEY = "IMAGE";

@Override
protected void onCreate(Bundle savedInstanceState) 
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main2);

 imageView = (ImageView)findViewById(R.id.imageView);
 Bundle bundle = getIntent().getExtras();
 String url = bundle.getString(KEY);
 LoadingImages(url);


private void LoadingImages(String url) 
 final ImageLoader imageLoader = MySingleton.getInstance(getApplicationContext()).getImageLoader();
 imageLoader.get(url, new ImageLoader.ImageListener() 
 @Override
 public void onResponse(ImageLoader.ImageContainer response, boolean isImmediate) 
 Bitmap bitmap = response.getBitmap();
 imageView.setImageBitmap(bitmap);
 

 @Override
 public void onErrorResponse(VolleyError error) 
 Log.e("Error", error.getMessage());
 
 );

change This methods

@Override
public int getCount() 
return 0;


@Override
public Object getItem(int i) 
return null;


@Override
public long getItemId(int i) 
return 0;
 

To

@Override
public int getCount() 
return bitmaps.size;


@Override
public Object getItem(int i) 
return bitmaps.get(i);


@Override
public long getItemId(int i) 
return i;