Resource ID #0x7f060078 type #0x1 is not valid

Resource ID #0x7f060078 type #0x1 is not valid

<string-array name="arr1">
    <item>1</item>
    <item>1</item>
</string-array>

<integer-array name="arr2">
    <item>1</item>
    <item>1</item>
</integer-array> 

int mVideoTypes = getResources().getIntArray(R.array.arr1); //Error 

int mVideoTypes = getResources().getIntArray(R.array.arr2); //Success