如何根据用户角色控制Java android应用中组件的可见性？

public class MainActivity extends AppCompatActivity {

    private TextView adminTextView;
    private TextView userTextView;

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

        adminTextView = findViewById(R.id.adminTextView);
        userTextView = findViewById(R.id.userTextView);

        // 假设我们从某个地方获取用户角色
        String userRole = getUserRole();

        if ("admin".equals(userRole)) {
            adminTextView.setVisibility(View.VISIBLE);
            userTextView.setVisibility(View.GONE);
        } else if ("user".equals(userRole)) {
            adminTextView.setVisibility(View.GONE);
            userTextView.setVisibility(View.VISIBLE);
        } else {
            adminTextView.setVisibility(View.GONE);
            userTextView.setVisibility(View.GONE);
        }
    }

    private String getUserRole() {
        // 这里可以从SharedPreferences、数据库或网络请求中获取用户角色
        // 为了示例，我们假设返回一个固定的角色
        return "admin";
    }
}