abrufen, Bild aus mysql-Datenbank in android studios

Ich bin neu in der android-studios. Hier, ich bin versucht zu Holen Bilder aus der mysql-Datenbank gespeichert, die in einem online-server an und zeigt das Bild auf listvew. Aber ich bin immer Fehler in meine eigene Datei. Bitte helfen Sie mir. dies ist der Fehler, ich bin immer in der log, wenn ich versuche zu laufen, meine Anwendung

dies ist mein customJava code:
package com.Beispiel.manarpatel.book_app;

import android.app.Activity;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;


public class CustomList extends ArrayAdapter<String> {
private String[] urls;
private Bitmap[] bitmaps;
private Activity context;

public CustomList(Activity context, String[] urls, Bitmap[] bitmaps) {
    super(context, R.layout.image_list_view, urls);
    this.context = context;
    this.urls= urls;
    this.bitmaps= bitmaps;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

        LayoutInflater inflater = context.getLayoutInflater();
        View listViewItem = inflater.inflate(R.layout.image_list_view,parent, true);

        TextView textViewURL = (TextView) listViewItem.findViewById(R.id.textViewURL);
        ImageView image = (ImageView) listViewItem.findViewById(R.id.imageDownloaded);

        textViewURL.setText(urls[position]);

    Bitmap smaller = Bitmap.createScaledBitmap(bitmaps[position], 100, 50, false);
    image.setImageBitmap(smaller);
      // image.setImageBitmap(Bitmap.createScaledBitmap(bitmaps[position], 100, 50, false));

    return listViewItem;
    }
}

Hier ist meine imageList-viewer java-code:

package com.example.manarpatel.book_app;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

import org.json.JSONException;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;


    public class ImageListView extends AppCompatActivity implements AdapterView.OnItemClickListener {

    private ListView listView;

    public static final String GET_IMAGE_URL="http://usedbookapp.esy.es/getAllImages.php";

    public GetAlImages getAlImages;

    public static final String BITMAP_ID = "BITMAP_ID";

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

        listView = (ListView) findViewById(R.id.listView);
        listView.setOnItemClickListener(this);
        getURLs();
    }

    private void getImages(){
        class GetImages extends AsyncTask<Void,Void,Void>{
            ProgressDialog loading;
            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                loading = ProgressDialog.show(ImageListView.this,"Downloading images...","Please wait...",false,false);
            }

            @Override
            protected void onPostExecute(Void v) {
                super.onPostExecute(v);
                loading.dismiss();
                //Toast.makeText(ImageListView.this,"Success",Toast.LENGTH_LONG).show();
                CustomList customList = new CustomList(ImageListView.this,GetAlImages.imageURLs,GetAlImages.bitmaps);
                listView.setAdapter(customList);
            }

            @Override
            protected Void doInBackground(Void... voids) {
                try {
                    getAlImages.getAllImages();

                } catch (JSONException e) {
                    e.printStackTrace();
                }
                return null;
            }
        }
        GetImages getImages = new GetImages();
        getImages.execute();
    }

    private void getURLs() {
        class GetURLs extends AsyncTask<String,Void,String>{
            ProgressDialog loading;

            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                loading = ProgressDialog.show(ImageListView.this,"Loading...","Please Wait...",true,true);
            }

            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                loading.dismiss();
                getAlImages = new GetAlImages(s);
                getImages();
            }

            @Override
            protected String doInBackground(String... strings) {
                BufferedReader bufferedReader = null;
                try {
                    URL url = new URL(strings[0]);
                    HttpURLConnection con = (HttpURLConnection) url.openConnection();
                    StringBuilder sb = new StringBuilder();

                    bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

                    String json;
                    while((json = bufferedReader.readLine())!= null){
                        sb.append(json+"\n");
                    }

                    return sb.toString().trim();

                }catch(Exception e){
                    return null;
                }
            }
        }
        GetURLs gu = new GetURLs();
        gu.execute(GET_IMAGE_URL);
    }

    @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
        Intent intent = new Intent(this, ViewFullImage.class);
        intent.putExtra(BITMAP_ID,i);
        startActivity(intent);
    }
}

java-code zu bekommen alle Bilder:

package com.example.manarpatel.book_app;


import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

public class GetAlImages {

public static String[] imageURLs;
public static Bitmap[] bitmaps;

public static final String JSON_ARRAY="result";
public static final String IMAGE_URL = "url";
private String json;
private JSONArray urls;

public GetAlImages(String json){
    this.json = json;
    try {
        JSONObject jsonObject = new JSONObject(json);
        urls = jsonObject.getJSONArray(JSON_ARRAY);
    } catch (JSONException e) {
        e.printStackTrace();
    }
}

private Bitmap getImage(JSONObject jo){
    URL url = null;
    Bitmap image = null;
    try {
        url = new URL(jo.getString(IMAGE_URL));
        image = BitmapFactory.decodeStream(url.openConnection().getInputStream());
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return image;
}

public void getAllImages() throws JSONException {
    bitmaps = new Bitmap[urls.length()];

    imageURLs = new String[urls.length()];

    for(int i=0;i<urls.length();i++){
        imageURLs[i] = urls.getJSONObject(i).getString(IMAGE_URL);
        JSONObject jsonObject = urls.getJSONObject(i);
        bitmaps[i]=getImage(jsonObject);
        }
    }
}

hier der xml-code der image-Liste anzeigen

<LinearLayoutandroid:orientation="horizontal"android:layout_width="fill_parent" android:layout_height="wrap_content">
<ImageView android:id="@+id/imageDownloaded" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/abc_ic_menu_copy_mtrl_am_alpha"/>  
<TextView android:id="@+id/textViewURL" android:layout_width="wrap_content" android:layout_height="wrap_content"/>

</LinearLayout>