Первая игра 4х4

12-24 08:06:46.864 1776-1776/? E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.root.v_1/com.example.root.v_1.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=15; index=15
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
at android.app.ActivityThread.access$600(ActivityThread.java:141)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=15; index=15
at com.example.root.v_1.MainActivity.addElement(MainActivity.java:68)
at com.example.root.v_1.MainActivity.onCreate(MainActivity.java:31)
at android.app.Activity.performCreate(Activity.java:5133)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)*
at android.app.ActivityThread.access$600(ActivityThread.java:141)*
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)*
at android.os.Handler.dispatchMessage(Handler.java:99)*
at android.os.Looper.loop(Looper.java:137)*
at android.app.ActivityThread.main(ActivityThread.java:5103)*
at java.lang.reflect.Method.invokeNative(Native Method)*
at java.lang.reflect.Method.invoke(Method.java:525)*
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)*
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)*
at dalvik.system.NativeStart.main(Native Method)*

package com.example.root.v_1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;
import java.util.Arrays;
import java.util.Random;

public class MainActivity extends Activity implements View.OnClickListener {
public LinearLayout llt, myllt;
public static Random rnd = new Random();
private int koll = 0, summ = 0;
private int[] sort = new int[15];

@Override
protected void onCreate( Bundle savedInstanceState ) {
super.onCreate(savedInstanceState);
setContentView( R.layout.main );

llt = ( LinearLayout ) findViewById( R.id.myllt );
int i = llt.getChildCount();

for ( int k = 0; k < i; k++ ) {
if( llt.getChildAt( k ) instanceof LinearLayout ){
myllt = ( LinearLayout )llt.getChildAt( k );
for ( int j = 0; j < myllt.getChildCount(); j++ ) {
if( myllt.getChildAt( j ) instanceof Button ) {
( ( Button ) myllt.getChildAt(j) ).setText( String.valueOf( addElement() ) );
}
}
}
}
Arrays.sort(sort);
}

@Override
public void onClick(View view) {

int tmp = Integer.parseInt((String) ((Button) view).getText());
Toast errorMsg = Toast.makeText(this, "Подумайте ещё (~_-)", Toast.LENGTH_SHORT);
Toast tst2 = Toast.makeText(this, "Победа!", Toast.LENGTH_LONG);

Toast test = Toast.makeText(this, "Нажато: " + tmp, Toast.LENGTH_LONG);
test.show();

if( view == null || !( view instanceof Button ) ) {
return;
}

if ( tmp != sort[summ] ) {
errorMsg.show();
} else {
summ++;
}

if ( summ == 15 ) {
tst2.show();
}

}

protected int addElement() {
int tmp = rnd.nextInt(100);

sort[koll] = tmp;
koll++;

return tmp;
}

}