Android 11应用程序在打开时崩溃，并出现空指针异常

public class MainActivity extends AppCompatActivity {
    private TextView textView;

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

        textView = findViewById(R.id.textView);

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 可能的空指针异常
                textView.setText(null);
            }
        });
    }
}

button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (textView != null) {
            textView.setText("Some text");
        } else {
            Log.e("MainActivity", "TextView is null");
        }
    }
});