App keeps on crashing when I click in element of recycleview

App keeps on crashing when I click in element of recycleview - java

Why is this app is not working properly when I click on the each item of the recycle view Toast of the position of the item appears but when I click each item(cardview) to open a new activity app crash. I don't know what is wrong.
GalleryFragment.java
package com.example.kiran.cr7;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.CardView;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
import java.util.ArrayList;
/** * A simple {#link Fragment} subclass. */ public class GalleryFragment extends Fragment implements Adapter.OnCardClickListner {
public GalleryFragment() {
// Required empty public constructor
}
private RecyclerView mrecycleview;
private CardView mcardview;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_gallery, container, false);
mrecycleview = (RecyclerView)view.findViewById(R.id.recycle_view);
mcardview = (CardView)view.findViewById(R.id.card_view);
//improve performance
mrecycleview.setHasFixedSize(true);
LinearLayoutManager manager = new LinearLayoutManager(view.getContext());
mrecycleview.setLayoutManager(manager);
ArrayList<Item> itemlist = dummies();
//set adapter // Adapter adapter = new Adapter(view.getContext(),itemlist); // mrecycleview.setAdapter(adapter); // adapter.setOnCardClickListner(this);
Adapter adapter = new Adapter(view.getContext(),itemlist);
mrecycleview.setAdapter(adapter);
adapter.setOnCardClickListner(this);
return view;
}
private ArrayList<Item> dummies() {
ArrayList<Item> list = new ArrayList<>();
for (int i = 0; i < 6; i++) {
if (i == 0) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "http://wallpapercave.com/wp/sIggTrG.jpg";
list.add(item);
} else if (i == 1) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "http://i2.wp.com/www.footballwood.com/wp-content/uploads/2015/01/Ronaldo-Best-Wallpapers.jpg";
list.add(item);
} else if (i == 2) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "http://www.magazinefuse.com/wp-content/uploads/2015/09/7-i476725-1024x640.jpg";
list.add(item);
} else if (i == 3) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "https://i.ytimg.com/vi/SwHv6xGGBBQ/maxresdefault.jpg";
list.add(item);
}else if (i == 4) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "https://i.ytimg.com/vi/WrCfkR4Qcns/maxresdefault.jpg";
list.add(item);
}
else if (i == 5) {
Item item = new Item();
item.id = i;
item.text = "RonaldoPhoto" + (i);
item.img = "http://images.latinpost.com/data/images/full/101477/cristiano-ronaldo-real-madrid.jpg";
list.add(item);
}
}
return list;
}
#Override
public void OnCardClicked(View view, int position) {
Log.d("OnClick", "Card Position" + position);
Toast.makeText(getContext(),"click"+position,Toast.LENGTH_SHORT).show();
Intent in= new Intent(view.getContext(),Detail.class);
in.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(in);
} }
Adapter.java
package com.example.kiran.cr7;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>{
private RecyclerView mRecyclerView;
private Context context;
private ArrayList<Item> itemlist;
OnCardClickListner onCardClickListner;
public Adapter(Context context, ArrayList<Item> itemlist){
this.context = context;
this.itemlist = itemlist;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.from(parent.getContext()).inflate(R.layout.cardview,parent,false);
mRecyclerView = (RecyclerView) view.findViewById(R.id.recycle_view);
ViewHolder viewholder = new ViewHolder(view);
return viewholder;
}
//bind views with data
#Override
public void onBindViewHolder(ViewHolder holder, final int position) {
final Item item = itemlist.get(position);
//get element form your dataset at this position
//replace the contents of the view with that element
Picasso.with(context)
.load(item.img)
.placeholder(R.drawable.fern)
.error(android.R.drawable.stat_notify_error)
.into(holder.cardimage);
holder.cardtext.setText(item.text);
holder.card_view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onCardClickListner.OnCardClicked(v,position);
Intent in = new Intent(v.getContext(), Detail.class);
in.putExtra("item",item);
in.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//context.startActivity(in);
}
});
}
#Override
public int getItemCount() {
if(itemlist != null){
return itemlist.size();
}
return 0;
}
//provide the reference to the views for each data item
//ViewHolder class
//since it is static it uses only single memory so protect memory leak : a design pattern for android
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public CardView card_view;
public TextView cardtext;
public ImageView cardimage;
//connects which view belongs to which layout
public ViewHolder(View itemView) {
super(itemView);
card_view = (CardView)itemView.findViewById(R.id.card_view);
cardtext = (TextView)itemView.findViewById(R.id.cardtext);
cardimage = (ImageView)itemView.findViewById(R.id.cardimage);
}
#Override
public void onClick(View view) {
}
}
public interface OnCardClickListner {
void OnCardClicked(View view, int position);
}
public void setOnCardClickListner(OnCardClickListner onCardClickListner) {
this.onCardClickListner = onCardClickListner;
}
}
Detail
package com.example.kiran.cr7;
import android.app.DownloadManager; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.net.Uri; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; import android.widget.ImageView; import android.widget.Toast;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
public class Detail extends AppCompatActivity implements Adapter.OnCardClickListner {
private ImageView detailimage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
detailimage = (ImageView)findViewById(R.id.detailimage);
}
#Override
public void OnCardClicked(View view, int position) {
Log.d("OnClick", "Card Position" + position);
if(getIntent().getSerializableExtra("item") != null){
Item i = (Item)getIntent().getSerializableExtra("item");
Picasso.with(this)
.load(i.img)
.placeholder(R.drawable.fern)
.error(android.R.drawable.stat_notify_error)
.into(detailimage);
}
} }

You don't need to use OnCardClicked in detail.java activity. Use serializable to send data from one activity from another. Use OnCardClicked.onBindViewHolder to send data from one activity to another.
package com.example.kiran.cr7;
import android.app.DownloadManager;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.squareup.picasso.Picasso;
public class Test extends Activity {
private ImageView detailimage;
private Button download;
DownloadManager downloadManager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
download = (Button) findViewById(R.id.Download);
detailimage = (ImageView) findViewById(R.id.detailimage);
final Animation animAlpha = AnimationUtils.loadAnimation(this,R.anim.anim_alpha);
if (getIntent().getSerializableExtra("item") != null) {
final Item i = (Item) getIntent().getSerializableExtra("item");
Picasso.with(this)
.load(i.img)
.resize(500,600)
.placeholder(R.drawable.fern)
.error(android.R.drawable.stat_notify_error)
.into(detailimage);
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
//Toast.makeText(Test.this, "Network Connection available", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(Test.this, "No Network Connection", Toast.LENGTH_LONG).show();
}
download.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
view.startAnimation(animAlpha);
downloadManager =(DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse(i.img);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
Long reference = downloadManager.enqueue(request);
}
});
}
}
}

Related

ARCore - Select different 3D Object from Modelrenderable list

I'm making an app which is quite similar to IKEA Place app. First all the products will be listed from a ListView in the first Activity. When you click to a product, all the information of that product will be displayed in a new Activity in CardView form. There will be "Preview" and "Add to Cart" button down below, which will lead you to the next step, either to preview the product in AR as a real 3D Object, or you can directly add the product to Cart and go to the payment step. Now I'm facing the problem that, each product will have its own 3D Object preview, but they always display the same 3D Object in AR. What should I do to let the app know when to select the corresponding object when you want to preview different peoducts in AR? Here is my code.
ProductFragment.java
package com.example.myar;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import androidx.fragment.app.Fragment;
import com.nex3z.notificationbadge.NotificationBadge;
public class ProductFragment extends Fragment {
private NotificationBadge badge;
here is the list of my 3d Objects corresponding to each product.
private String[] names = {"name1", "name2", "name3", "name4", "name5", "name6", "name7" };
private int[] images = {R.drawable.background, R.drawable.ic_launcher_background, R.drawable.background,
R.drawable.background, R.drawable.ic_launcher_background, R.drawable.ic_launcher_background, R.drawable.background};
private String[] description ={"123", "456", "789", "1011", "abc", "3311", "31313"};
private String[] price ={"19,00 €", "20,50 €", "35,00 €", "44,19 €", "5,79 €", "89,99 €", "1,99 €"};
private String[] object3D = {"ArcticFox_Posed.sfb", "AJ-Vase.sfb", "10432_Aloe_Plant_v1_max2008_it2.sfb","AJ-Vase.sfb",
"AJ-Vase.sfb", "ArcticFox_Posed.sfb", "10432_Aloe_Plant_v1_max2008_it2.sfb"};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
setHasOptionsMenu(true);
View view = inflater.inflate(R.layout.product_fragment, container, false);
ListView listView = view.findViewById(R.id.ItemListView);
ProductFragment.customadapter ca = new ProductFragment.customadapter();
listView.setOnItemClickListener((parent, view1, position, id) -> {
String nameItemListview = names[position];
int imageItemListview = images[position];
String descItemListview = description[position];
String priceItemListview = price[position];
// String object3DListview = object3D[position];
Intent intent = new Intent(view1.getContext(), ProductViewActivity.class);
intent.putExtra("item Names", nameItemListview);
intent.putExtra("item Images", imageItemListview);
intent.putExtra("item Desc", descItemListview);
intent.putExtra("item Price", priceItemListview);
// intent.putExtra("3D Object", object3DListview);
ProductFragment.this.startActivity(intent);
});
listView.setAdapter(ca);
return view;
}
#Override
public void onCreateOptionsMenu( Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_cart, menu);
View view = menu.findItem(R.id.action_cart).getActionView();;
badge = view.findViewById(R.id.badge);
ImageView cart_icon = view.findViewById(R.id.cart_icon);
cart_icon.setOnClickListener(v -> startActivity(new Intent (getContext(), CartActivity.class)));
updateCartCount();
}
private void updateCartCount() {
if(badge == null) return;
getActivity().runOnUiThread(() -> {
if (MainActivity.cartRepository.countItem() == 0)
badge.setVisibility(View.VISIBLE);
else {
badge.setVisibility((View.VISIBLE));
badge.setText(String.valueOf(MainActivity.cartRepository.countItem()));
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.action_cart) {
}
return true;
}
class customadapter extends BaseAdapter {
#Override
public int getCount() {
return images.length;
}
#Override
public Object getItem(int arg0) {
return null;
}
#Override
public long getItemId(int arg0) {
return 0;
}
#SuppressLint({"ViewHolder", "InflateParams"})
#Override
public View getView(final int position, View view, ViewGroup parent) {
view = getLayoutInflater().inflate(R.layout.layout_list_item, null);
TextView tv = view.findViewById(R.id.item_name);
ImageView image = view.findViewById(R.id.item_image);
TextView pv = view.findViewById(R.id.item_price);
tv.setText(names[position]);
image.setImageResource(images[position]);
pv.setText(price[position]);
return view;
}
}
#Override
public void onResume() {
super.onResume();
updateCartCount();
}
}
ProductViewActivity.java
package com.example.myar;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Toolbar;
import androidx.core.content.ContextCompat;
import androidx.fragment.app.FragmentActivity;
import com.example.myar.RoomDatabase.ModelDB.Cart;
import com.google.gson.*;
public class ProductViewActivity extends FragmentActivity {
Toolbar productToolbar;
ImageView productImage;
TextView productName;
TextView productDesc;
TextView productPrice;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_productview);
productToolbar = findViewById(R.id.toolbarTop);
productImage = findViewById(R.id.product_image);
productName = findViewById(R.id.product_name);
productDesc = findViewById(R.id.product_description);
productPrice = findViewById(R.id.product_price);
String nameHolder = getIntent().getStringExtra("item Names");
productName.setText(nameHolder);
int imageHolder = getIntent().getIntExtra("item Images", -1);
productImage.setImageResource(imageHolder);
String descHolder = getIntent().getStringExtra("item Desc");
productDesc.setText(descHolder);
String priceHolder = getIntent().getStringExtra("item Price");
productPrice.setText(priceHolder);
productToolbar.setTitle("Detail");
setActionBar(productToolbar);
getWindow().setStatusBarColor(ContextCompat.getColor(ProductViewActivity.this, R.color.colorProductBackground));
//backButton as arrow
if (getActionBar() != null) {
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setDisplayShowHomeEnabled(true);
}
Button previewButton = findViewById(R.id.previewButton);
previewButton.setOnClickListener(view -> openPreview());
Button addToCartButton = findViewById(R.id.addToCartButton);
addToCartButton.setOnClickListener(view -> addToCartActivity());
}
//click on Arrow to go back to last Activity
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle arrow click here
if (item.getItemId() == android.R.id.home) {
finish(); // close this activity and return to preview activity (if there is any)
}
return super.onOptionsItemSelected(item);
}
public void openPreview (){
Intent intent = new Intent(this, ArFragmentPreview.class);
startActivity(intent);
}
public void addToCartActivity (){
try {
Cart cartItem = new Cart();
cartItem.name = productName.getText().toString();
cartItem.description = productDesc.getText().toString();
cartItem.price = productPrice.getText().toString();
MainActivity.cartRepository.insertToCart(cartItem);
Log.d("MyAR", new Gson().toJson(cartItem));
Toast.makeText(this, "Save Item to Cart successful", Toast.LENGTH_SHORT).show();
}
catch (Exception ex)
{
Toast.makeText(this, ex.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}
ArFragmentPreview
package com.example.myar;
import android.net.Uri;
import android.os.Bundle;
import android.view.Gravity;
import android.view.MotionEvent;
import android.widget.Button;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.ar.sceneform.collision.Box;
import com.google.ar.sceneform.ux.ArFragment;
import com.google.ar.core.Anchor;
import com.google.ar.core.HitResult;
import com.google.ar.core.Plane;
import com.google.ar.sceneform.AnchorNode;
import com.google.ar.sceneform.Camera;
import com.google.ar.sceneform.Node;
import com.google.ar.sceneform.Sun;
import com.google.ar.sceneform.math.Quaternion;
import com.google.ar.sceneform.math.Vector3;
import com.google.ar.sceneform.rendering.ModelRenderable;
import com.google.ar.sceneform.ux.TransformableNode;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
public class ArFragmentPreview extends AppCompatActivity {
private ArFragment arFragment;
public Plane.Type planeType;
ModelRenderable Fox, Vase, Plant;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_arpreview_layout);
arFragment = (ArFragment)getSupportFragmentManager().findFragmentById(R.id.arFragment);
arFragment.setOnTapArPlaneListener((HitResult hitResult, Plane plane, MotionEvent motionEvent) -> {
I can only render this file in AR.
//Renderable mode in AR app
ModelRenderable.builder()
.setSource(this, Uri.parse("ArcticFox_Posed.sfb"))
.build()
.thenAccept(modelRenderable -> addModelToScene(modelRenderable, hitResult, planeType))
.exceptionally(throwable -> {
Toast toast = Toast.makeText(this, "Unable to load andy renderable", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
return null;
});
Button backButton = findViewById(R.id.backButton);
backButton.setOnClickListener(v -> this.finish());
Button clearButton = findViewById(R.id.clearButton);
clearButton.setOnClickListener(view -> onClear());
}
private void addModelToScene(ModelRenderable modelRenderable, HitResult hitResult, Plane.Type planeType) {
Anchor anchor = hitResult.createAnchor();
AnchorNode anchorNode = new AnchorNode(anchor);
anchorNode.setParent(arFragment.getArSceneView().getScene());
Vector3 size = ((Box) modelRenderable.getCollisionShape()).getSize();
TransformableNode transformableNode = new TransformableNode(arFragment.getTransformationSystem());
transformableNode.setParent(anchorNode);
arFragment.getArSceneView().getScene().addChild(anchorNode);
if (planeType == Plane.Type.HORIZONTAL_DOWNWARD_FACING) {
transformableNode.setParent(transformableNode);
transformableNode.setLocalPosition(new Vector3(0, size.y, 0));
transformableNode.setLocalRotation(new Quaternion(0, 0, 1, 0));
transformableNode.setRenderable(modelRenderable);
transformableNode.select();
} else if (planeType == Plane.Type.VERTICAL) {
transformableNode.setParent(transformableNode);
//transformableNode.setLookDirection(new Vector3(0,0,0));
transformableNode.setRenderable(modelRenderable);
transformableNode.select();
} else {
transformableNode.setRenderable(modelRenderable);
transformableNode.select();
}
}
private void onClear() {
List<Node> children = new ArrayList<>(arFragment.getArSceneView().getScene().getChildren());
for (Node node : children) {
if (node instanceof AnchorNode) {
if (((AnchorNode) node).getAnchor() != null) {
Objects.requireNonNull(((AnchorNode) node).getAnchor()).detach();
}
}
if (!(node instanceof Camera) && !(node instanceof Sun)) {
node.setParent(null);
}
}
}
}

You could try and open the project in JMonkey and check the output or warnings from the debugger/ compile log, Failing that check all your access modifiers and make sure that before the new model comes in the focus is not left in a private class from a public one.

How i can download and read "PDF file" with AsyncTask

I am creating an application for School Students so that they do not miss their huge BOOKS. In this project, the student clicks “RecylerView”, immediately downloads the book “Pdf” and saves it to external storage. "like whatsapp" without database
At the moment, I have a problem in that it only sees the file, but does not save!
I am using AsyscTask "My PDF Viewer" activity which bottom
please help!!!
My Main Activity
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.RelativeLayout;
import java.util.ArrayList;
import java.util.List;
> public class MainActivity extends AppCompatActivity {
List<Product> productList;
//the recyclerview
RecyclerView recyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Animation animation = AnimationUtils.loadAnimation(this, R.anim.anim_about_card_show);
RelativeLayout relativeLayout = findViewById(R.id.rl);
relativeLayout.startAnimation(animation);
//getting the recyclerview from xml
recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
//initializing the productlist
productList = new ArrayList<>();
//adding some items to our list
productList.add(
new Product(
1,
"TEst 11111 \n",
60000,
R.drawable.android,
"link1"
));
productList.add(
new Product(
1,
" More types, Methods, Conditionals \n",
60000,
R.drawable.android,
"link2"
));
productList.add(
new Product(
1,
"Loops, Arrays ",
60000,
R.drawable.android,
"lin3"
));
productList.add(
new Product(
1,
"Strings",
60000,
R.drawable.android,
"https://firebasestorage.googleapis.com/v0/b/firepdf-4c1d6.appspot.com/o/2.intro.pdf?alt=media&token=75731b04-c1e7-42c4-b988-e50a8f7e5f6b "
));
//creating recyclerview adapter
ProductAdapter adapter = new ProductAdapter(this, productList);
//setting adapter to recyclerview
recyclerView.setAdapter(adapter);
}
}
Adapter
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;
> public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ProductViewHolder> {
//this context we will use to inflate the layout
private Context mCtx;
//we are storing all the products in a list
private List<Product> productList;
//getting the context and product list with constructor
public ProductAdapter(Context mCtx, List<Product> productList) {
this.mCtx = mCtx;
this.productList = productList;
}
#Override
public ProductViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//inflating and returning our view holder
LayoutInflater inflater = LayoutInflater.from(mCtx);
View view = inflater.inflate(R.layout.layout_products, null);
return new ProductViewHolder(view);
}
#Override
public void onBindViewHolder(ProductViewHolder holder, final int position) {
//getting the product of the specified position
final Product product = productList.get(position);
//binding the data with the viewholder views
holder.textViewTitle.setText(product.getTitle());
holder.imageView.setImageDrawable(mCtx.getResources().getDrawable(product.getImage()));
holder.cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(v.getContext(), pdf.class);
i.putExtra("title",productList.get(position).getTitle());
i.putExtra("product",productList.get(position).getTitle());
i.putExtra("link",productList.get(position).getLink());
mCtx.startActivity(i);
}
});
}
#Override
public int getItemCount() {
return productList.size();
}
class ProductViewHolder extends RecyclerView.ViewHolder {
TextView textViewTitle;
ImageView imageView;
CardView cardView;
public ProductViewHolder(View itemView) {
super(itemView);
cardView = itemView.findViewById(R.id.cardview);// card intial
textViewTitle = itemView.findViewById(R.id.textViewTitle);
imageView = itemView.findViewById(R.id.imageView);
}
}
}
My Pdf Viewer
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MenuItem;
import android.widget.Toast;
import com.github.barteksc.pdfviewer.PDFView;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class pdf extends AppCompatActivity {
String link="",productList="",product="";
PDFView pdfView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pdf);
product =getIntent().getStringExtra("title");
productList=getIntent().getStringExtra("productList");
link=getIntent().getStringExtra("link");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setTitle(productList);
pdfView=findViewById(R.id.pdfv);
//pdfView.fromAsset(link).load();
if (isConnected()) {
Toast.makeText(getApplicationContext(), "Internet Connected", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "No Internet Connection", Toast.LENGTH_SHORT).show();
AlertDialog.Builder builder = new AlertDialog.Builder(pdf.this);
builder.setTitle("NoInternet Connection Alert")
.setMessage("GO to Setting ?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(pdf.this,"Go Back TO HomePage!",Toast.LENGTH_SHORT).show();
}
});
//Creating dialog box
AlertDialog dialog = builder.create();
dialog.show();
}
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
link = getIntent().getStringExtra("link");
}
new pdf.RetrievePDFStream().execute(link);
}
public boolean isConnected() {
boolean connected = false;
try {
ConnectivityManager cm = (ConnectivityManager)getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo nInfo = cm.getActiveNetworkInfo();
connected = nInfo != null && nInfo.isAvailable() && nInfo.isConnected();
return connected;
} catch (Exception e) {
Log.e("Connectivity Exception", e.getMessage());
}
return connected;
}
class RetrievePDFStream extends AsyncTask<String, Void, InputStream> {
ProgressDialog progressDialog;
protected void onPreExecute()
{
progressDialog = new ProgressDialog(pdf.this);
progressDialog.setTitle("getting the book content...");
progressDialog.setMessage("Please wait...");
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.show();
}
#Override
protected InputStream doInBackground(String... strings) {
InputStream inputStream = null;
try {
URL urlx = new URL(strings[0]);
HttpURLConnection urlConnection = (HttpURLConnection) urlx.openConnection();
if (urlConnection.getResponseCode() == 200) {
inputStream = new BufferedInputStream(urlConnection.getInputStream());
}
} catch (IOException e) {
return null;
}
return inputStream;
}
#Override
protected void onPostExecute(InputStream inputStream) {
pdfView.fromStream(inputStream).load();
progressDialog.dismiss();
}
}
#Override public boolean onOptionsItemSelected(MenuItem item)
{
if (item.getItemId() == android.R.id.home)//means home default hai kya yesok
{
onBackPressed();
return true;
}
return false;
}
}

How to send Data when cardview clicked to detail content

I try to passing data from cardview when clicked to DetailFragment, in this case I try to use interface in my adapter, but I get an error a null object reference in mOnItemClickListener.onClick(i).
I try to passing data from cardview when clicked to DetailFragment, in this case I try to use interface in my adapter.
I want to passing data to DetailMoviesFragment Class.
this is my CardviewMovieAdapter Class
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import java.util.ArrayList;
public class CardviewMovieAdapter extends RecyclerView.Adapter<CardviewMovieAdapter.CardViewViewHolder> {
private ArrayList<Movie> listMovie;
Context context;
OnItemClickListener mOnItemClickListener;
public void setListMovie(ArrayList<Movie> listMovie) {
this.listMovie = listMovie;
}
public ArrayList<Movie> getListMovie() {
return listMovie;
}
public interface OnItemClickListener {
void onClick(int position);
}
public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mOnItemClickListener = mItemClickListener;
}
public CardviewMovieAdapter(ArrayList<Movie> listMovie, Context context) {
this.listMovie = listMovie;
this.context = context;
}
#NonNull
#Override
public CardviewMovieAdapter.CardViewViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_movie, viewGroup,false);
return new CardViewViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final CardviewMovieAdapter.CardViewViewHolder cardViewViewHolder, final int i) {
final Movie movie = listMovie.get(i);
Glide.with(cardViewViewHolder.itemView.getContext())
.load(movie.getImageMovie())
.apply(new RequestOptions().override(350, 550))
.into(cardViewViewHolder.imgPhoto);
cardViewViewHolder.tvTitle.setText(movie.getTitleMovie());
cardViewViewHolder.tvDesc.setText(movie.getDescription());
cardViewViewHolder.btnDetail.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(cardViewViewHolder.itemView.getContext(), "Detail "+
listMovie.get(cardViewViewHolder.getAdapterPosition()).getTitleMovie(), Toast.LENGTH_SHORT).show();
}
});
cardViewViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(cardViewViewHolder.itemView.getContext(), "Kamu Memilih "+movie.getTitleMovie(), Toast.LENGTH_SHORT).show();
mOnItemClickListener.onClick(i);
}
});
// cardViewViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
// #Override
// public void onClick(View v) {
// Toast.makeText(cardViewViewHolder.itemView.getContext(), "Kamu Memilih "+movie.getTitleMovie(), Toast.LENGTH_SHORT).show();
// }
// });
}
#Override
public int getItemCount() {
return listMovie.size();
}
public class CardViewViewHolder extends RecyclerView.ViewHolder {
ImageView imgPhoto;
TextView tvTitle, tvDesc;
Button btnDetail;
public CardViewViewHolder(#NonNull View itemView) {
super(itemView);
imgPhoto = itemView.findViewById(R.id.img_item_photo);
tvTitle = itemView.findViewById(R.id.tv_title);
tvDesc = itemView.findViewById(R.id.tv_desc);
btnDetail = itemView.findViewById(R.id.btn_detail);
}
}
}
This is my MoviesFragment Class
import android.content.Intent;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.widget.CardView;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ListView;
import java.util.ArrayList;
/**
* A simple {#link Fragment} subclass.
*/
public class MoviesFragment extends Fragment implements View.OnClickListener{
private RecyclerView rvMovie;
private String[] dataMovieTitle;
private String[] dataDescription;
private TypedArray dataPhoto;
private ArrayList<Movie> movies;
Button btnDetail;
private CardviewMovieAdapter adapter;
View view;
final static String KEY = "KEY";
public MoviesFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_movies, container, false);
//adapter = new CardviewMovieAdapter(movies,getContext());
rvMovie = view.findViewById(R.id.rv_movies);
prepare();
addItem();
showRecyclerCardView();
adapter = new CardviewMovieAdapter(movies, getContext());
adapter.setOnItemClickListener(new CardviewMovieAdapter.OnItemClickListener() {
#Override
public void onClick(int position) {
final Movie movie = movies.get(position);
DetailMoviesFragment detailMoviesFragment = new DetailMoviesFragment();
// Bundle mBundle = new Bundle();
// mBundle.putString(detailMoviesFragment.EXTRA_TITLE, movie.getTitleMovie());
// mBundle.putString(detailMoviesFragment.EXTRA_DESCRIPTION, movie.getDescription());
// mBundle.putInt(detailMoviesFragment.EXTRA_PHOTO, movie.getImageMovie());
// detailMoviesFragment.setArguments(mBundle);
MoviesFragment.newInstance(movie.getTitleMovie(), movie.getDescription(), movie.getImageMovie());
FragmentManager mFragmentManager = getFragmentManager();
if (mFragmentManager!= null) {
FragmentTransaction mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.containterFragment, detailMoviesFragment, DetailMoviesFragment.class.getSimpleName());
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.commit();
}
}
});
return view;
}
public static MoviesFragment newInstance(String title, String desc, int image) {
MoviesFragment moviesFragment = new MoviesFragment();
Bundle args = new Bundle();
args.putInt("image", image);
args.putString("title", title);
args.putString("desc", desc);
moviesFragment.setArguments(args);
return moviesFragment;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
private void showRecyclerCardView(){
rvMovie.setLayoutManager(new LinearLayoutManager(getActivity()));
CardviewMovieAdapter adapter = new CardviewMovieAdapter(movies,getActivity());
rvMovie.setAdapter(adapter);
}
private void prepare() {
dataMovieTitle = getResources().getStringArray(R.array.data_movie_name);
dataDescription = getResources().getStringArray(R.array.data_desc_movie);
dataPhoto = getResources().obtainTypedArray(R.array.data_photo_movie);
}
private void addItem(){
movies = new ArrayList<>();
for (int i=0; i < dataMovieTitle.length; i++){
Movie movie = new Movie();
movie.setImageMovie(dataPhoto.getResourceId(i, -1));
movie.setTitleMovie(dataMovieTitle[i]);
movie.setDescription(dataDescription[i]);
movies.add(movie);
}
}
#Override
public void onClick(View v) {
if(v.getId() == R.id.card_view){
}
}
}
and this is DetailMoviesActivity Class
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.squareup.picasso.Picasso;
public class DetailMovieActivity extends AppCompatActivity {
Movie movie;
TextView tvTitle, tvDesc;
ImageView ivMovie;
Button btnDetail;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail_movie);
initView();
}
private void initView() {
movie = (Movie) getIntent().getSerializableExtra("informasi");
String judul = movie.getTitleMovie();
String desc = movie.getDescription();
int img = movie.getImageMovie();
tvTitle.setText(judul);
tvDesc.setText(desc);
Picasso.get().load(img).into(ivMovie);
}
}

You can try with delete the setOnItemClickListener and call intent from cardViewViewHolder.itemView.setOnClickListener

Get an error : com.android.volley.ParseError: org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONArray

I try to get data from the database via API but the recyclerview doesn't display anything and the log displays an error.
This is my code
Fragment
package com.example.hp.retailmakanan;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.BottomNavigationView;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.Volley;
import com.example.hp.retailmakanan.Model.MenuModel;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class FragHome extends Fragment {
RecyclerView recV;
BottomNavigationView top_navigation;
HomeAdapter listAdapter;
List<MenuModel> listMenu= new ArrayList<>();
private BottomNavigationView.OnNavigationItemSelectedListener onNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
Fragment sfragment = null;
switch (menuItem.getItemId()) {
case R.id.nav_noodle:
recV.setAdapter(listAdapter);
break;
case R.id.nav_beverage:
recV.setAdapter(listAdapter);
break;
case R.id.nav_toping:
recV.setAdapter(listAdapter);
break;
case R.id.nav_cari:
recV.setAdapter(listAdapter);
break;
}
return false;
}
};
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.act_home, container, false);
recV = (RecyclerView) v.findViewById(R.id.rec_ramen);
getData();
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
recV.setLayoutManager(layoutManager);
listAdapter = new HomeAdapter(listMenu, getActivity());
recV.setAdapter(listAdapter);
top_navigation = (BottomNavigationView) v.findViewById(R.id.top_nav);
top_navigation.setOnNavigationItemSelectedListener(onNavigationItemSelectedListener);
return v;
}
this is the code that i used to get data
private void getData() {
String url ="https://waggish-requisition.000webhostapp.com/GetAllMenu.php";
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
listMenu.clear();
for (int i = 0; i < response.length(); i++) {
try {
Log.d("menu",response.toString());
JSONObject jsonObject = response.getJSONObject(i);
String id_menu = jsonObject.getString("id");
String nama_menu = jsonObject.getString("nama_menu");
String deskripsi = jsonObject.getString("deskripsi");
int harga = jsonObject.getInt("harga");
MenuModel menus = new MenuModel(id_menu,nama_menu,deskripsi,harga);
listMenu.add(menus);
System.out.println(menus);
//Toast.makeText(this,"Download data "+i,Toast.LENGTH_SHORT).show();
} catch (JSONException e) {
e.printStackTrace();
Log.d("menu",e.toString());
}
listAdapter.notifyDataSetChanged();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("Volley", error.toString());
}
});
RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(jsonArrayRequest);
}
}
Adapter
package com.example.hp.retailmakanan;
import android.content.Context;
import android.provider.ContactsContract;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.hp.retailmakanan.Model.MenuModel;
import java.util.Arrays;
import java.util.List;
public class HomeAdapter extends RecyclerView.Adapter {
private List<MenuModel> menus;
private Context context;
public HomeAdapter(List<MenuModel> menus, Context context) {
this.context = context;
this.menus = menus;
//System.out.println(menus);
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recv_desain, viewGroup, false);
return new ListViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder viewHolder, int pos) {
}
#Override
public int getItemCount() {
return menus.size();
}
public class ListViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
TextView mText,txt2, txt3, txtQty;
ImageView img;
Button btnMin, btnPlus;
int x;
public ListViewHolder(View itemView){
super(itemView);
mText = itemView.findViewById(R.id.text_item);
txt2 = itemView.findViewById(R.id.text_item2);
txt3 = itemView.findViewById(R.id.textView3);
img = itemView.findViewById(R.id.image_item);
btnMin = itemView.findViewById(R.id.buttonMinMenu);
btnPlus = itemView.findViewById(R.id.buttonPlusMenu);
txtQty = itemView.findViewById(R.id.textQtyMenu);
itemView.setOnClickListener(this);
}
public void bindView (int pos){
x=0;
MenuModel model = menus.get(pos);
mText.setText(model.getNama_menu());
txt2.setText(model.getDeskripsi());
txt3.setText(model.getHarga());
//img.setImageResource(DataMenu.picture[pos]);
txtQty.setText(String.valueOf(x));
btnPlus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
x++;
txtQty.setText(String.valueOf(x));
}
});
btnMin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
x--;
if (x<=0){
x=0;
txtQty.setText(String.valueOf(x));
}else if (x>0){
txtQty.setText(String.valueOf(x));
}
}
});
}
#Override
public void onClick(View v) {
}
}
}
And this is my php code
<?php
require_once('connection.php');
//public $mServerName;
//public $mConnectionInfo;
//public $conn;
//Create query to retrieve all contacts
$query = "SELECT * FROM menu";
$stmt = mysqli_query($conn, $query);
if (!$stmt)
{
//Query failed
echo 'Query failed';
}
else
{
$menus= array(); //Create an array to hold all of the contacts
//Query successful, begin putting each contact into an array of contacts
while ($row = mysqli_fetch_array($stmt)) //While there are still contacts
{
//Create an associative array to hold the current contact
//the names must match exactly the property names in the contact class in our C# code.
$menu= array("id" => $row['id_menu'],
"deskripsi" => $row['Deskripsi'],
"nama_menu" => $row['nm_menu'],
"harga" => $row['harga_menu'],
"ImageUrl" =>$row['gambar']
);
//Add the contact to the contacts array
array_push($menus, $menu);
}
//Echo out the contacts array in JSON format
echo json_encode($menus);
}
?>
I changed JSONObject to JSONArray, but that caused many other errors. I am a beginner please help me. I really don't know what to do :(

How to implement custom listview adapter in tabbed activity?

I am trying to implement the custom list view in tabbed activity for youtube video playing app. I could not able to call custom listview adapter in fragment java class. I have tried to pass getActivity() to custom adapter but the app crashes. If any one know the solution please help me.
The java class are as follows:
HomeFragment.java
package layout;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.ArrayList;
import java.util.List;
import in.testapp.app1.R;
public class HomeFragment extends Fragment {
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList();
private final List<String> mFragmentTitleList = new ArrayList();
public Adapter(FragmentManager manager) {
super(manager);
}
public Fragment getItem(int position) {
return (Fragment) this.mFragmentList.get(position);
}
public int getCount() {
return this.mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
this.mFragmentList.add(fragment);
this.mFragmentTitleList.add(title);
}
public CharSequence getPageTitle(int position) {
return (CharSequence) this.mFragmentTitleList.get(position);
}
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
ViewPager viewPager = (ViewPager) view.findViewById(R.id.viewpager);
setupViewPager(viewPager);
((TabLayout) view.findViewById(R.id.tablayout)).setupWithViewPager(viewPager);
return view;
}
private void setupViewPager(ViewPager viewPager) {
Adapter adapter = new Adapter(getChildFragmentManager());
adapter.addFragment(new YouTubeFragment(), "Tab 1");
adapter.addFragment(new SecondFragment(), "Tab 2");
viewPager.setAdapter(adapter);
}
}
YouTubeFragment.java
package layout;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings.PluginState;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.RetryPolicy;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import in.testapp.app1.AppUtils;
import in.testapp.app1.ChannelActivity;
import in.testapp.app1.CustomListAdapter;
import in.testapp.app1.R;
import in.testapp.app1.VideoDetails;
public class YouTubeFragment extends Fragment {
String TAG="MainActivity2";
ListView lvVideo;
ArrayList<VideoDetails> videoDetailsArrayList;
CustomListAdapter customListAdapter;
//{youtube_api_key} is replaced by actual key
String URL="https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UC5Eg6bkwsdCd-ZlcB3nt1dg&maxResults=25&key={youtube_api_key}";
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_you_tube, container, false);
lvVideo=(ListView)view.findViewById(R.id.videoList);
videoDetailsArrayList=new ArrayList<>();
//App crashes here in the beolw line
customListAdapter=new CustomListAdapter(getActivity(),videoDetailsArrayList);
//App crashes here in the above line
showVideo();
return view;
}
private void showVideo() {
RequestQueue requestQueue= Volley.newRequestQueue(getContext());
StringRequest stringRequest=new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
try {
JSONObject jsonObject=new JSONObject(response);
JSONArray jsonArray=jsonObject.getJSONArray("items");
for(int i=1;i<jsonArray.length();i++){
JSONObject jsonObject1 = jsonArray.getJSONObject(i);
JSONObject jsonVideoId=jsonObject1.getJSONObject("id");
JSONObject jsonsnippet= jsonObject1.getJSONObject("snippet");
JSONObject jsonObjectdefault = jsonsnippet.getJSONObject("thumbnails").getJSONObject("medium");
VideoDetails videoDetails=new VideoDetails();
String videoid=jsonVideoId.getString("videoId");
Log.e(TAG," New Video Id" +videoid);
videoDetails.setURL(jsonObjectdefault.getString("url"));
videoDetails.setVideoName(jsonsnippet.getString("title"));
videoDetails.setVideoDesc(jsonsnippet.getString("description"));
videoDetails.setVideoId(videoid);
videoDetailsArrayList.add(videoDetails);
}
lvVideo.setAdapter(customListAdapter);
customListAdapter.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
}
});
int socketTimeout = 30000;
RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
stringRequest.setRetryPolicy(policy);
requestQueue.add(stringRequest);
}
}
CustomListAdapter.java
package in.testapp.app1;
import android.app.Activity;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.NetworkImageView;
import java.util.ArrayList;
public class CustomListAdapter extends BaseAdapter {
Activity activity;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
private LayoutInflater inflater;
ArrayList<VideoDetails> singletons;
public CustomListAdapter(Activity activity, ArrayList<VideoDetails> singletons) {
this.activity = activity;
this.singletons = singletons;
}
public int getCount() {
return this.singletons.size();
}
public Object getItem(int i) {
return this.singletons.get(i);
}
public long getItemId(int i) {
return (long) i;
}
public View getView(int i, View convertView, ViewGroup viewGroup) {
if (this.inflater == null) {
this.inflater = (LayoutInflater) this.activity.getLayoutInflater();
// getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
if (convertView == null) {
convertView = this.inflater.inflate(R.layout.videolist, null);
}
if (this.imageLoader == null) {
this.imageLoader = AppController.getInstance().getImageLoader();
}
NetworkImageView networkImageView = (NetworkImageView) convertView.findViewById(R.id.video_image);
final TextView imgtitle = (TextView) convertView.findViewById(R.id.video_title);
final TextView imgdesc = (TextView) convertView.findViewById(R.id.video_descriptio);
final TextView tvURL=(TextView)convertView.findViewById(R.id.tv_url);
final TextView tvVideoID=(TextView)convertView.findViewById(R.id.tv_videoId);
((LinearLayout) convertView.findViewById(R.id.asser)).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent=new Intent(view.getContext(), VideoActivity.class);
intent.putExtra("videoId",tvVideoID.getText().toString());
view.getContext().startActivity(intent);
}
});
VideoDetails singleton = (VideoDetails) this.singletons.get(i);
networkImageView.setImageUrl(singleton.getURL(), this.imageLoader);
tvVideoID.setText(singleton.getVideoId());
imgtitle.setText(singleton.getVideoName());
imgdesc.setText(singleton.getVideoDesc());
return convertView;
}
}
VideoDeatils.java
package in.testapp.app1;
public class VideoDetails {
String VideoName;
String VideoDesc;
String URL;
String VideoId;
public void setVideoName(String VideoName){
this.VideoName=VideoName;
}
public String getVideoName(){
return VideoName;
}
public void setVideoDesc(String VideoDesc){
this.VideoDesc=VideoDesc;
}
public String getVideoDesc(){
return VideoDesc;
}
public void setURL(String URL){
this.URL=URL;
}
public String getURL(){
return URL;
}
public void setVideoId(String VideoId){
this.VideoId=VideoId;
}
public String getVideoId(){
return VideoId;
}
}

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