Code for adaptor:
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class quotesAdapter extends RecyclerView.Adapter<quotesAdapter.quotesViewHolder> {
private List<String> quotes;
private List<String> authors;
private List<ImageView> images = null;
private Context context;
public quotesAdapter(List<String> quotes, QuotesActivity quotesActivity, List<String> authors, Context context) {
this.quotes = quotes;
this.authors = authors;
this.context = context;
}
@NonNull
@Override
public quotesViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.example_item_quotes, viewGroup, false);
// View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.example_item_quotes, parent, false);
// RecyclerView.ViewHolder holder = new RecyclerView.ViewHolder(view) {
return new quotesViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull quotesViewHolder holder, int i) {
String[] colors = {"#952222", "#10171B", "#FF373535", "#ECE3D3", "#10171B","#10171B","#10171B","#10171B","#10171B","#10171B","#10171B","#10171B","#10171B"};
String quote = quotes.get(i);
***String author = authors.get(i);***
holder.txtQuote.setText(quote);
holder.txtAuthor.setText(author);
int color = i % colors.length;
int intColor = Color.parseColor(colors[color]);
holder.quoteContainer.setBackgroundColor(intColor);
holder.txtQuote.setBackgroundColor(intColor);
holder.txtAuthor.setBackgroundColor(intColor);
}
@Override
public int getItemCount() {
return quotes.size();
}
public static class quotesViewHolder extends RecyclerView.ViewHolder {
TextView txtQuote;
TextView txtAuthor;
LinearLayout quoteContainer;
public quotesViewHolder(@NonNull View itemView) {
super(itemView);
txtQuote = itemView.findViewById(R.id.txtQuote);
txtAuthor = itemView.findViewById(R.id.txtAuthor);
quoteContainer = itemView.findViewById(R.id.quotesContainer);
}
}
}
Code for activity:
import android.media.Image;
import android.os.Bundle;
import android.widget.ImageView;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class QuotesActivity extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.quotes_act);
RecyclerView quotesList = findViewById(R.id.quotesList);
quotesList.setLayoutManager(new LinearLayoutManager(this));
quotesList.setAdapter(new quotesAdapter(getQuotes(), this,getAuthors(),this));
}
private List<String> getQuotes() {
List<String> quotes = new ArrayList<>();
BufferedReader bufferedReader = null;
try {
bufferedReader = new BufferedReader(new InputStreamReader(this.getAssets().open("quotes.txt"), "UTF-8"));
String line;
while ((line = bufferedReader.readLine()) != null) {
quotes.add(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return quotes;
}
private List<String> getAuthors() {
List<String> authors = new ArrayList<>();
BufferedReader bufferedReader = null;
try {
bufferedReader = new BufferedReader(new InputStreamReader(this.getAssets().open("authors.txt"), "UTF-8"));
String line;
while ((line = bufferedReader.readLine()) != null) {
authors.add(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return authors;
}
}
Error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: konak.labs.warstoriesv2, PID: 820
java.lang.IndexOutOfBoundsException: Index: 7, Size: 7
at java.util.ArrayList.get(ArrayList.java:437)
at konak.labs.warstoriesv2.quotesAdapter.onBindViewHolder(quotesAdapter.java:47)
at konak.labs.warstoriesv2.quotesAdapter.onBindViewHolder(quotesAdapter.java:17)
at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6781)
at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6823)
at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5752)
at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6019)
at androidx.recyclerview.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:286)
at androidx.recyclerview.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:343)
at androidx.recyclerview.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:359)
at androidx.recyclerview.widget.GapWorker.prefetch(GapWorker.java:366)
at androidx.recyclerview.widget.GapWorker.run(GapWorker.java:397)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
The quotes.txt and authors.txt are inside the res folder of my project. Also, the app does show the first few instances of getAuthors and getQuotes but crashes after showing these. I dont know why it crashes. Maybe if i throw an exception into my adaptor code to handle when there is no more items to view. But the crash happens when the authors is included in the adaptor code. I removed the authors list from being populated in the recyclerview and the quotes did correctly display without crash, even if there was nothing left to display (no more quotes).
Any help guys?
Index begins from 0. Therefore, for an array of size 7, the index will be from 0 to 6.
The error
java.lang.IndexOutOfBoundsException: Index: 7, Size: 7
signifies that
The array has only 7 elements, but an attempt was made to extract the 8th element.