This should be a simple fix but I just cant get it?!
I want to randomly select an integer from an integer array and load a bitmap of it - sometimes it goes thru but most of the time it errors out - i don't see how I'm going outside of the array?
At first I used array.length() and then array.length() - 1, but now I'm using a range safetly between the start and end ~ which is not what I want to do
public int GetRandomNumber(int min, int ma开发者_如何学Pythonx) {
return min + (int)(Math.random() * ((max - min) + 1));
}
public void Whatever()
{
Integer[] ImageIds;
ImageIds = new Integer[9];
ImageIds[0] = R.drawable.splatter1;
ImageIds[1] = R.drawable.splatter2;
ImageIds[2] = R.drawable.splatter3;
ImageIds[3] = R.drawable.splatter4;
ImageIds[4] = R.drawable.splatter5;
ImageIds[5] = R.drawable.splatter6;
ImageIds[6] = R.drawable.splatter7;
ImageIds[7] = R.drawable.splatter8;
ImageIds[8] = R.drawable.splatter9;
ImageIds[9] = R.drawable.splatter10;
Bitmap Asset;
for (int i = 0; i < splatters.length; i++) {
int RandomIndex = GetRandomNumber(0, 9);
Asset = BitmapFactory.decodeResource(mContext.getResources(), ImageIds[RandomIndex ]);
}
}
I get an ArrayIndexOutOfBounds exception
Why does this crash?
Because must be
ImageIds = new Integer[10];
You set 10 images, but create array of size 9. Also look at line in logs, which caused error. It really helps.
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