java.lang.ArrayIndexOutOfBoundsException: length=6; index=6 | String.xml

Question

in my little app I want to display something from my String.xml I normaly use this to do this:

public void putText() {
    String[] text1 = getResources().getStringArray(R.array.text1);
    String[] text2 = getResources().getStringArray(R.array.text2);


    if(selecter >= MAX) {
        selecter = 0;
    }
    else {
        selecter++;
    }

    // Texte anzeigen und Shown table auf true setzen.
    // normally selecter instead of 6
    txt_text1.setText(text1[6]);
    txt_text2.setText(text2[6]);
}

but when 'selecter' is between 6 and 9(nine is the MAX variable) the app crashes with this error:

FATAL EXCEPTION: main
                                                   Process: com.example.alex.wouldyoupressthebutton, PID: 22844
                                                   java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.alex.wouldyoupressthebutton/com.example.alex.wouldyoupressthebutton.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=6; index=6
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2750)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2811)
                                                       at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528)
                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                       at android.os.Looper.loop(Looper.java:154)
                                                       at android.app.ActivityThread.main(ActivityThread.java:6316)
                                                       at java.lang.reflect.Method.invoke(Native Method)
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
                                                    Caused by: java.lang.ArrayIndexOutOfBoundsException: length=6; index=6
                                                       at com.example.alex.wouldyoupressthebutton.MainActivity.putText(MainActivity.java:175)
                                                       at com.example.alex.wouldyoupressthebutton.MainActivity.onCreate(MainActivity.java:85)
                                                       at android.app.Activity.performCreate(Activity.java:6757)
                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2703)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2811) 
                                                       at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1528) 
                                                       at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                       at android.os.Looper.loop(Looper.java:154) 
                                                       at android.app.ActivityThread.main(ActivityThread.java:6316) 
                                                       at java.lang.reflect.Method.invoke(Native Method) 
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872) 
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)

Here is also my string.xml

<string-array name="text1">
    <item>You would have everything you want</item>
    <item>You can go back in time when you want</item>
    <item>You gain the ability to communicate with animals</item>
    <item>You gain any one super-power of your choice (aside from immortality)</item>
    <item>You would become the greatest player in your favorite sport</item>
    <item>You gain omniscience (infinite knowledge of everything)</item>
    <item>You become the most talented musician in the world (any instrument)</item>
    <item>Instead of Dying, you regenerate</item>
    <item>You wil have unlimited money</item>
    <item>Everyone on earth love and adore you</item>
</string-array>
<string-array name="text2">
    <item>you don\'t understand the human language anymore.</item>
    <item>you can only talk to one person per each travel.</item>
    <item>you lose the ability to communicate with humans</item>
    <item>you lose your ability to swim</item>
    <item>you would constantly be criticized</item>
    <item>you have it for 24 hours, and afterwards you gain permanent down syndrome.</item>
    <item>you cannot earn any money from your talent.</item>
    <item>you only can regenerate 12 times, and each time you look like a different person but retain all memories.</item>
    <item>you can never sleep again.</item>
    <item>never fall in love yourself.</item>
</string-array>

I have tried a shorter text in the String.xml but I still got the message... And this only happets between six and the MAX(9)

any suggestions why?

If you're getting this while using RecyclerView.Adapter class on Android, make sure you're returning your list's size in getItemCount method, and not returning some hardcoded int value. — M.Ed, Jan 08 '22 at 22:11

score 2 · Accepted Answer · answered Sep 11 '17 at 17:59

2

Caused by: java.lang.ArrayIndexOutOfBoundsException: length=6; index=6

Means you are trying to access element at index 6 of an array with length 6. But arrays are 0-based indexed, meaning that the first element is in position 0 not 1. So the maximum index in a 6-element array is index 5.

Your fault is probably in this line:

if(selecter >= MAX)

it should be

if(selecter > MAX)

However you don't show what is the MAX value. It cannot be >6. Somewhere in your code you should have defined it as int MAX = 6;

answered Sep 11 '17 at 17:59

pleft

7,567
2
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the thing is that there are 9 entries in the string.xml so I have to start at 0 and go to 9 and why does it say that it has only 6 – MrMinemeet Sep 11 '17 at 18:03
Yes, I observed that, have you debuged your app to see what is the true content of the arrays `text1` and `text2`? A simple `Log.d("TAG", text1.length)` will reveal you the real size of the array – pleft Sep 11 '17 at 18:06
When I try it on a Virtual Device it says that its 10 long and it works to **selecter = 9**... but when I try it on my LG G6 or any other real device it crashes and says that its only 6 long. – MrMinemeet Sep 12 '17 at 18:33

score -1 · Answer 2 · answered Sep 11 '17 at 19:15

-1

You could increase your value of MAX. Maybe MAX = MAX + 1;

answered Sep 11 '17 at 19:15

Mark Casavantes

1
3

nope that does nothing – MrMinemeet Sep 12 '17 at 18:35

java.lang.ArrayIndexOutOfBoundsException: length=6; index=6 | String.xml

2 Answers2