显示分数后关闭活动

Question

单击“显示分数”按钮后，我将完成一个分数屏幕测验。 但是，我想知道如何在分数显示几秒钟后自动关闭测验并返回我的主要活动。

public void showScore(View view) {
    // Calculate the number of correct answers after the "Show score" button is tapped.
    Button button = (Button) findViewById(R.id.score);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            // Do your other functions //
            int score = calculateScore(answer1, answer2, answer3, answer4);
            // Convert the correct answer-to-question ratio to percentage.
            float percentage = score * 100 / 4;
            // Show the percentage score in a toast

            Toast.makeText(this, "Your score: " + percentage + "%", Toast.LENGTH_LONG).show();

            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    Intent i = new Intent(EmotionsActivity.this, ActivitiesActivity.class);
                    startActivity(i);
                    finish(); // closes after score has been shown
                }
            }, 2000); // Set your time here //
        }
    });

错误：

error: no suitable method found for makeText(<anonymous 
OnClickListener>,String,int)
method Toast.makeText(Context,CharSequence,int) is not applicable
(argument mismatch; <anonymous OnClickListener> cannot be converted to 
Context)
method Toast.makeText(Context,int,int) is not applicable
(argument mismatch; <anonymous OnClickListener> cannot be converted to Context)

Answer 1

使用https://developer.android.com/reference/android/os/Handler类的postDelayed方法在活动上调用finish（）。

Answer 2

在按钮单击上使用postDelayed ，并使用意图更改活动。 例：

Button button = (Button) findViewById(R.id.score);
 button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // Do your other functions //
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
            Intent i = new Intent(ActivityQuiz.this, MainActivity.class);
            startActivity(i);
            finish();
                    }
                }, 5000); // Set your time here //
            }
        });