Android - สอบถามเรื่อง select all checkbox lisview error ถ้าไอเทมโรล เยอะๆ

public void onClick(View v) {
int count = lisView1.getAdapter().getCount();
for (int i = 0; i < count; i++) {
LinearLayout itemLayout = (LinearLayout)lisView1.getChildAt(i); // Find by under LinearLayout
CheckBox checkbox = (CheckBox)itemLayout.findViewById(R.id.ColChk);
if(checkbox.isChecked())
{
Log.d("Item "+String.valueOf(i), checkbox.getTag().toString());

Toast.makeText(MainActivity.this,checkbox.getTag().toString() ,Toast.LENGTH_LONG).show(); 
}
} 
}
});