i am developing a android app with firebase leaderboard, it working well, but crash when i click on leaderboard, here is stack trace logs, i am getting 2 error:
E/UncaughtException: java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
E/AndroidRuntime: FATAL EXCEPTION: main
12-02 01:05:53.969 3508-3508/com.example.myapp E/UncaughtException: java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
at java.util.ArrayList.get(ArrayList.java:308)
at com.example.myapp.activity.LeaderboardActivity$4.onChildAdded(LeaderboardActivity.java:167)
at com.google.android.gms.internal.zzaer.zza(Unknown Source)
at com.google.android.gms.internal.zzagp.zzSu(Unknown Source)
at com.google.android.gms.internal.zzags$1.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
12-02 01:05:54.215 3508-3508/com.example.myapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapp, PID: 3508
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
at java.util.ArrayList.get(ArrayList.java:308)
at com.examle.myapp.activity.LeaderboardActivity$4.onChildAdded(LeaderboardActivity.java:167)
at com.google.android.gms.internal.zzaer.zza(Unknown Source)
at com.google.android.gms.internal.zzagp.zzSu(Unknown Source)
at com.google.android.gms.internal.zzags$1.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
both blue lines indicate error on this line in leaderboardactivity.java
if (leaderboards.get(1).getName().equalsIgnoreCase(displayName)) {
here is code snippet from leaderboardactivity.java
private void getLeaderboard() {
databaseLeaderboard.orderByChild("score").limitToLast((int) totalValue).addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String prevChildKey) {
Leaderboard leaderboard = dataSnapshot.getValue(Leaderboard.class);
leaderboards.add(leaderboard);
if (leaderboards.size() >= (int) totalValue) {
Collections.reverse(leaderboards);
leaderboardAdapterNew.notifyDataSetChanged();
}
if (leaderboards.size() == totalValue) {
if (leaderboards.get(0).getName().equalsIgnoreCase(displayName)) {
txtUname1.setText("Me");
} else {
txtUname1.setText(leaderboards.get(0).getName());
}
if (leaderboards.get(1).getName().equalsIgnoreCase(displayName)) {
txtUname2.setText("Me");
} else {
txtUname2.setText(leaderboards.get(1).getName());
}
if (leaderboards.get(2).getName().equalsIgnoreCase(displayName)) {
txtUname3.setText("Me");
} else {
txtUname3.setText(leaderboards.get(2).getName());
}
can someone tell me where is my fault?
Yes, you are trying to access an index that doesn't exist:
Change this :
if (leaderboards.size() == totalValue) {
To this:
if (leaderboards.size() == totalValue && totalValue > 2) {