I am using the volley library for the networking side. I am trying to get the image to be loaded onto the next screen when I click on an item on the list. In the XML file, I am using the "NetworkImageView" to hold the image. I am using intent to pass the views across the description page.
Thanks in Advance
Here is the code:
List Activity This activity shows the list of items that is stored in the database
public class HallListActivity extends AppCompatActivity
implements SearchView.OnQueryTextListener, AdapterView.OnItemClickListener {
// Log tag
private static final String TAG = HallListActivity.class.getSimpleName();
// Movies json url
private static final String url = "http://10.0.2.2/wedding1/halls.php";
private ProgressDialog progressDialog;
private List<Hall> hallList = new ArrayList<Hall>();
private ListView listView;
private HallAdapter adapter;
private Hall h;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hall_list);
getSupportActionBar().setTitle("List of Halls");
listView = (ListView) findViewById(R.id.list);
adapter = new HallAdapter(this, hallList);
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
// Create a new progress dialog
progressDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
progressDialog.setMessage("Loading...");
progressDialog.show();
// Creating volley request obj
//String url = "http://10.0.2.2/wedding1/";
JsonArrayRequest hallReq = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
Hall hall = new Hall();
hall.setThumbnailUrl(obj.getString("image"));
hall.setTitle(obj.getString("name"));
hall.setDescription(obj.getString("description"));
hall.setLocation(obj.getString("location"));
hall.setPrice(obj.getString("price"));
// adding hall to movies array
hallList.add(hall);
} catch (JSONException e) {
e.printStackTrace();
}
}
progressDialog.dismiss(); // progress bar disappears once the halls are loaded on screen
/* notifying list adapter about data changes so that it renders the list view with updated data */
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hideProgressDialog();
}
});
// Adding request to request queue
MySingleton.getInstance().addToRequestQueue(hallReq);
}
@Override
public void onDestroy() {
super.onDestroy();
hideProgressDialog();
}
private void hideProgressDialog() {
if (progressDialog != null) {
progressDialog.dismiss();
progressDialog = null;
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.refresh:
startActivity(new Intent(getApplicationContext(), HallListActivity.class));
break;
}
return true;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
MenuItem menuItem = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(menuItem);
searchView.setOnQueryTextListener(this); // The onQueryTextChange method will invoke
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
newText = newText.toLowerCase();
ArrayList<Hall> newList = new ArrayList<>();
for (Hall hall : hallList) {
String name = hall.getTitle().toLowerCase();
if (name.contains(newText))
newList.add(hall);
}
return true;
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
h = hallList.get(position);
// shows the hall name at the bottom once the hall is clicked
Toast.makeText(HallListActivity.this, h.getTitle(), Toast.LENGTH_SHORT).show();
Intent intentDescription = new Intent(HallListActivity.this, HallDescriptionActivity.class);
Log.d(TAG, "onItemClick: title " + h.getTitle());
intentDescription.putExtra("title", h.getTitle());
intentDescription.putExtra("image", h.getThumbnailUrl());
intentDescription.putExtra("description", h.getDescription());
intentDescription.putExtra("location", h.getLocation());
intentDescription.putExtra("price", String.valueOf(h.getPrice()));
intentDescription.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intentDescription);
}
}
Description Activity This activity shows the details of the item selected in the previous activity
public class HallDescriptionActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = HallDescriptionActivity.class.getSimpleName();
TextView tvTitle, tvDesc, tvLocation, tvPrice;
NetworkImageView ivImage;
Button btnReserve;
ImageLoader imageLoader;
Hall h;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hall_description);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
imageLoader = MySingleton.getInstance().getImageLoader();
// Initialize the views
tvTitle = (TextView) findViewById(R.id.tvTitle);
ivImage = (NetworkImageView) findViewById(R.id.ivImage);
tvDesc = (TextView) findViewById(R.id.tvDesc);
tvLocation = (TextView) findViewById(R.id.tvLocation);
tvPrice = (TextView) findViewById(R.id.tvPrice);
btnReserve = (Button) findViewById(R.id.btnReserve);
btnReserve.setOnClickListener(this);
try {
Intent iDescription = getIntent();
h = new Hall();
Log.d(TAG, "onCreate: hall " + h);
// The text and image from the list page is passed onto this page using intents
h.setTitle(iDescription.getStringExtra("title"));
//Get the result of image
h.setThumbnailUrl(iDescription.getStringExtra("image"));
//Get the result of description
h.setDescription(iDescription.getStringExtra("description"));
//Get the result of location
h.setLocation(iDescription.getStringExtra("location"));
//Get the result of price
h.setPrice(iDescription.getStringExtra("price"));
// The views then set to their appropriate views
tvTitle.setText(h.getTitle());
ivImage.setImageUrl(h.getThumbnailUrl(), imageLoader);
tvDesc.setText(h.getDescription());
tvLocation.setText(h.getLocation());
tvPrice.setText("£" + h.getPrice());
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
}
@Override
public void onClick(View v) {
if(v == btnReserve) {
startActivity(new Intent(getApplicationContext(), OrderActivity.class));
}
}
}
Adapter class
public class HallAdapter extends BaseAdapter {
private Activity activity;
private LayoutInflater inflater;
private List<Hall> hallItems;
ImageLoader imageLoader = MySingleton.getInstance().getImageLoader();
public HallAdapter(Activity activity, List<Hall> hallItems) {
this.activity = activity;
this.hallItems = hallItems;
}
// Lets tge ListView know how many items to display (returns the size of the data source
@Override
public int getCount() {
return hallItems.size();
}
// returns an item to be placed in a given position of the data source
@Override
public Object getItem(int position) {
return hallItems.get(position);
}
// defines a unique ID for each row in the list
// Use the position of the item as its ID for simplicity
@Override
public long getItemId(int position) {
return position;
}
// Creates the view to be used as a row in the list.
// Defining the information and where it is placed in the ListView.
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.list_item, null);
// image loader is used to check if the permissions are granted or not
if (imageLoader == null)
imageLoader = MySingleton.getInstance().getImageLoader();
// Thumbnail
NetworkImageView thumbnail = (NetworkImageView) convertView.findViewById(R.id.thumbnail);
// Hall name
TextView title = (TextView) convertView.findViewById(R.id.title);
// Rating
TextView description = (TextView) convertView.findViewById(R.id.description);
// genre
TextView location = (TextView) convertView.findViewById(R.id.location);
// year
TextView price = (TextView) convertView.findViewById(R.id.price);
// getting hall data for each row
//Hall h = hallItems.get(position);
Hall h = (Hall) getItem(position);
// Thumbnail image
String url = "http://10.0.2.2/wedding1/";
thumbnail.setImageUrl(url + h.getThumbnailUrl(), imageLoader);
// Title
title.setText(h.getTitle());
// Description
description.setText(String.valueOf(h.getDescription()));
// Location
location.setText(String.valueOf(h.getLocation()));
// Price
price.setText("£" + String.valueOf(h.getPrice()));
return convertView;
}
}
