将EditText与SharedPreferences进行比较

Question

我想比较一个EditText值和一个共享首选项，但即使它们是相同的，它也不起作用，它们是我的代码：

 public void random_question_answer(){
    final int rando = (int) (Math.random() * arr_question.length);
    final EditText answer = (EditText) findViewById(R.id.answer);
    final String thequestion = prefA.getString(arr_question[rando],"");
    final String theanswer = answer.getText().toString();
    final boolean com = theanswer.trim().equalsIgnoreCase(thequestion.trim().toString());
    question.setText(arr_question[rando]);
    next.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            if(com == true){
                situation1.setVisibility(View.VISIBLE);
            }else{
                situation2.setText(thequestion+"/"+theanswer);
                situation2.setVisibility(View.VISIBLE);
            }
            new android.os.Handler().postDelayed(
                new Runnable() {
                    public void run() {
                        situation1.setVisibility(View.GONE);
                        situation2.setVisibility(View.GONE);
                        situation2.setText("Wrong!");
                        answer.setText("");
                        random_question_answer();
                    }
                },
            2000);
        }
    });
}