Hello stackoverflow community!!
How do I access a JSON array in this URL “https://api.json-generator.com/templates/z0aMAeTBHKq3/data”
token is “2oof0bzpgllll2a8k2fmmh6aaykeu8yptztdzke7”
but when I display the data in an Activity, it just displays blank and exits the app. But When I change the URL without an auth/bearer token I can see the displayed data in the URL.
So my question: is how do I put the token in header so that I can have access and see the data displayed in the mobile phone?
I know it is simple but i am having a hard time.
This is my MainActivity.java
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private RequestQueue requestQueue;
private List<Movie> movieList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
requestQueue = VolleySingleton.getmInstance(this).getRequestQueue();
movieList = new ArrayList<>();
fetchMovies();
}
private void fetchMovies() {
//Url with auth
String url = "https://api.json-generator.com/templates/z0aMAeTBHKq3/data";
//URL without auth
//String url = "https://jsonplaceholder.typicode.com/posts";
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.GET, url, null,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
for (int i = 0 ; i < response.length() ; i ++){
try {
JSONObject jsonObject = response.getJSONObject(i);
String userId = jsonObject.getString("userId");
String id = jsonObject.getString("id");
String title = jsonObject.getString("title");
String body = jsonObject.getString("body");
Movie movie = new Movie(title , userId , id , body);
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
}
MovieAdapter adapter = new MovieAdapter(MainActivity.this , movieList);
recyclerView.setAdapter(adapter);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
HashMap headers = new HashMap();
String authValue = "Bearer " +
"2oof0bzpgllll2a8k2fmmh6aaykeu8yptztdzke7";
headers.put("Authorization", authValue);
headers.put("Accept", "application/json; charset=UTF-8");
headers.put("Content-Type", "application/json; charset=UTF-8");
requestQueue.add(jsonArrayRequest);
}
}
this is my Movie.java
public class Movie {
private String userId , id , title, body;
public Movie(String userId , String id , String title , String body){
this.title = title;
this.userId = userId;
this.id = id;
this.body = body;
}
public String getTitle() {
return title;
}
public String getUserId() {
return userId;
}
public String getId() {
return id;
}
public String getBody() {
return body;
}
}
this is my MovieAdapter.java
public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.MovieHolder> {
private Context context;
private List<Movie> movieList;
public MovieAdapter(Context context , List<Movie> movies){
this.context = context;
movieList = movies;
}
@NonNull
@Override
public MovieHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.item , parent , false);
return new MovieHolder(view);
}
@Override
public void onBindViewHolder(@NonNull MovieHolder holder, int position) {
Movie movie = movieList.get(position);
holder.userId.setText(movie.getUserId().toString());
holder.id.setText(movie.getId());
holder.title.setText(movie.getTitle());
holder.body.setText(movie.getBody());
holder.constraintLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context , DetailActivity.class);
Bundle bundle = new Bundle();
bundle.putString("userId" , movie.getUserId());
bundle.putString("id" , movie.getId());
bundle.putString("title" , movie.getTitle());
bundle.putString("body" , movie.getBody());
intent.putExtras(bundle);
context.startActivity(intent);
}
});
}
@Override
public int getItemCount() {
return movieList.size();
}
public class MovieHolder extends RecyclerView.ViewHolder{
TextView title , userId , id, body;
ConstraintLayout constraintLayout;
public MovieHolder(@NonNull View itemView) {
super(itemView);
userId = itemView.findViewById(R.id.userid_tv);
title = itemView.findViewById(R.id.title_tv);
id = itemView.findViewById(R.id.id_tv);
body = itemView.findViewById(R.id.id_tv);
constraintLayout = itemView.findViewById(R.id.main_layout);
}
}
}
This is my VolleySingleton.java
public class VolleySingleton {
private RequestQueue requestQueue;
private static VolleySingleton mInstance;
private VolleySingleton(Context context){
requestQueue = Volley.newRequestQueue(context.getApplicationContext());
}
public static synchronized VolleySingleton getmInstance(Context context){
if (mInstance == null){
mInstance = new VolleySingleton(context);
}
return mInstance;
}
public RequestQueue getRequestQueue(){return requestQueue;}
}
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Answer
Try This
Change
private void fetchMovies() {
//Url with auth
String url = "https://api.json-generator.com/templates/z0aMAeTBHKq3/data";
//URL without auth
//String url = "https://jsonplaceholder.typicode.com/posts";
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.GET, url, null,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
for (int i = 0 ; i < response.length() ; i ++){
try {
JSONObject jsonObject = response.getJSONObject(i);
String userId = jsonObject.getString("userId");
String id = jsonObject.getString("id");
String title = jsonObject.getString("title");
String body = jsonObject.getString("body");
Movie movie = new Movie(title , userId , id , body);
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
}
MovieAdapter adapter = new MovieAdapter(MainActivity.this , movieList);
recyclerView.setAdapter(adapter);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
HashMap headers = new HashMap();
String authValue = "Bearer " +
"2oof0bzpgllll2a8k2fmmh6aaykeu8yptztdzke7";
headers.put("Authorization", authValue);
headers.put("Accept", "application/json; charset=UTF-8");
headers.put("Content-Type", "application/json; charset=UTF-8");
requestQueue.add(jsonArrayRequest);
}
To
private void fetchMovies() {
// Url with auth
String url = "https://api.json-generator.com/templates/z0aMAeTBHKq3/data";
// URL without auth
// String url = "https://jsonplaceholder.typicode.com/posts";
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.GET, url, null,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
for (int i = 0 ; i < response.length() ; i ++){
try {
JSONObject jsonObject = response.getJSONObject(i);
String userId = jsonObject.getString("userId");
String id = jsonObject.getString("id");
String title = jsonObject.getString("title");
String body = jsonObject.getString("body");
Movie movie = new Movie(title , userId , id , body);
movieList.add(movie);
} catch (JSONException e) {
e.printStackTrace();
}
MovieAdapter adapter = new MovieAdapter(MainActivity.this , movieList);
recyclerView.setAdapter(adapter);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MainActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
}){
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = new HashMap<String, String>();
String authValue = "Bearer " + "2oof0bzpgllll2a8k2fmmh6aaykeu8yptztdzke7";
headers.put("Authorization", authValue);
headers.put("Accept", "application/json; charset=UTF-8");
headers.put("Content-Type", "application/json; charset=UTF-8");
return headers;
}
};
requestQueue.add(jsonArrayRequest);
}
put your headers code inside getHeaders() @Overtide method