为什么我看不到android中两次点击的时间差？

public class MainActivity extends AppCompatActivity {
    private long lastClickTime = 0;

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

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                long currentTime = System.currentTimeMillis();
                long timeDiff = currentTime - lastClickTime;
                lastClickTime = currentTime;

                // 在这里可以根据时间差执行相应的操作
                if (timeDiff < 1000) {
                    // 两次点击间隔小于1秒
                    Toast.makeText(MainActivity.this, "双击事件发生", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }
}