chore: store sentences list as instance

app/src/main/java/dev/alemi/sentences/MainActivity.java

@@ -3,8 +3,8 @@ package dev.alemi.sentences;
 import dev.alemi.R;
 
 import android.os.Bundle;
-import android.view.View;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import androidx.appcompat.app.AppCompatActivity;
@@ -14,21 +14,23 @@ public class MainActivity extends AppCompatActivity {
 	TextView currSentence;
 	FloatingActionButton buttonNext;
 	String[] sentences;
+	SentenceList list;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_main);
 
+		this.list = new SentenceList();
 		this.currSentence = findViewById(R.id.currSentence);
 		this.buttonNext = findViewById(R.id.button);
-		this.buttonNext.setVisibility(View.VISIBLE);
 
 		this.buttonNext.setOnClickListener(view -> {
-			this.currSentence.setText(SentenceList.next());
+			int index = this.list.step();
+			Toast.makeText(getApplicationContext(), String.format("#%d", index), Toast.LENGTH_SHORT).show();
+			this.currSentence.setText(this.list.current());
 		});
 
-		this.currSentence.setText(SentenceList.next());
 	}
 }
 

app/src/main/java/dev/alemi/sentences/SentenceList.java

@@ -2,18 +2,34 @@ package dev.alemi.sentences;
 
 import java.util.Collections;
 import java.util.LinkedList;
-import java.util.List;
 import java.util.Queue;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
-import android.widget.Toast;
+public class SentenceList {
+	private Queue<Integer> order = new LinkedList<>();
+	private String cur = SentenceList.sentences[0];
 
-// TODO do a resource rather than this horrible solution...
-public final class SentenceList {
-	private static Queue<Integer> order = new LinkedList<>();
+	public String current() {
+		return this.cur;
+	}
 
-	public static String[] sentences = {
+	public int step() {
+		if (this.order.size() <= 0) {
+			LinkedList<Integer> range = IntStream
+				.range(0, SentenceList.sentences.length)
+				.boxed()
+				.collect(Collectors.toCollection(LinkedList::new));
+			Collections.shuffle(range);
+			this.order = range;
+		}
+
+		int index = this.order.poll();
+		this.cur = SentenceList.sentences[index];
+		return index;
+	}
+
+	public static String[] sentences = { // TODO maybe store them as a resource? idk
 		"The birch canoe slid on the smooth planks.",
 		"Glue the sheet to the dark blue background.",
 		"It's easy to tell the depth of a well.",
@@ -735,19 +751,4 @@ public final class SentenceList {
 		"She called his name many times.",
 		"When you hear the bell, come quickly.",
 	};
-
-	public static String next() {
-		if (SentenceList.order.size() <= 0) {
-			LinkedList<Integer> range = IntStream
-				.range(0, SentenceList.sentences.length)
-				.boxed()
-				.collect(Collectors.toCollection(LinkedList::new));
-			Collections.shuffle(range);
-			SentenceList.order = range;
-		}
-
-		int index = SentenceList.order.poll();
-
-		return SentenceList.sentences[index];
-	}
 }

app/src/main/res/layout/activity_main.xml

@@ -14,7 +14,7 @@
 		android:layout_height="wrap_content"
 		android:layout_centerHorizontal="true"
 		android:layout_centerVertical="true"
-		android:text="Harvard Sentences"
+		android:text="Press the floating button to cycle at random the 720 harvard sentences. No duplicates will be shown until all sentences have been cycled (or the app is restarted)."
 		android:textSize="24dp"
 		android:padding="24dp"
 		tools:context=".MainActivity"