ImageView not showing up after OnClick

I am writing a simple war card game in android studio using Java. The app seems to work however when you click deal the cards disapear. To clarify, when I run the app I can see the back of the cards, but when I click deal, the cards simply disappear, but the score keeps counting. I thought about putting the images in an array but I am unsure how to call them in the onclick. Can someone give me some guidance? Thank you!!

Main Activity:

public class MainActivity extends AppCompatActivity {    ImageView iv_card_left, iv_card_right;  TextView tv_score_left, tv_score_right;  Button b_deal;    Random r;    int leftScore = 0, rightScore = 0;    @Override  protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);        iv_card_left = (ImageView) findViewById(R.id.iv_card_left);      iv_card_right = (ImageView) findViewById(R.id.iv_card_right);      tv_score_left = (TextView) findViewById(R.id.tv_score_left);      tv_score_right = (TextView) findViewById(R.id.tv_score_right);      b_deal = (Button) findViewById(R.id.b_deal);        r = new Random();        b_deal.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View view) {                //generate two card numbers, add points, and display them              int leftCard = r.nextInt(13) + 2; //this is for cards 2-14              int rightCard = r.nextInt(13) + 2; //this is for cards 2-14                //show card images              int leftImage = getResources().getIdentifier("card" + leftCard, "drawable", getPackageName());              iv_card_left.setImageResource(leftImage);              int rightImage = getResources().getIdentifier("card" + rightCard, "drawable", getPackageName());              iv_card_right.setImageResource(rightImage);                //compare cards              if(leftCard > rightCard) {                  leftScore++;                  tv_score_left.setText(String.valueOf(leftScore));              } else if(leftCard < rightCard) {                  rightScore++;                  tv_score_right.setText(String.valueOf(rightScore));              } else {                  Toast.makeText(MainActivity.this, "WAR", Toast.LENGTH_SHORT).show();              }            }      });  }  

activity_main:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:background="@drawable/jackpot"  android:layout_height="match_parent"  tools:context=".MainActivity">    <LinearLayout      android:id="@+id/lay_cards"      android:layout_width="match_parent"      android:layout_alignParentTop="true"      android:orientation="horizontal"      android:layout_height="wrap_content">        <ImageView          android:id="@+id/iv_card_left"          android:layout_width="wrap_content"          android:layout_height="253dp"          android:layout_weight="1"          android:scaleType="centerInside"          android:src="@drawable/red_back" />          <ImageView          android:id="@+id/iv_card_right"          android:layout_width="wrap_content"          android:layout_height="match_parent"          android:layout_weight="1"          android:scaleType="centerInside"          android:src="@drawable/red_back" />    </LinearLayout>    <Button      android:id="@+id/b_deal"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_below="@+id/lay_cards"      android:layout_centerHorizontal="true"      android:layout_marginTop="20dp"      android:text="Deal"      />    <LinearLayout      android:id="@+id/lay_points"      android:layout_width="match_parent"      android:layout_alignParentBottom="true"      android:orientation="horizontal"      android:layout_height="wrap_content">        <TextView          android:id="@+id/tv_score_left"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_weight="1"          android:gravity="center"          android:text="0"          android:textColor="#FFFFFF"          android:textSize="24sp" />        <TextView          android:id="@+id/tv_score_right"          android:layout_width="0dp"          android:layout_weight="1"          android:textSize="32sp"          android:text="0"          android:textColor="#FFFFFF"          android:gravity="center"          android:layout_height="wrap_content"/>    </LinearLayout>  

https://stackoverflow.com/questions/67352153/imageview-not-showing-up-after-onclick May 02, 2021 at 09:04AM