Android -在标准java类中使用活动回调

public interface CallbackInterface {
    void onCallback(String result);
}

private CallbackInterface callback;

public void setCallback(CallbackInterface callback) {
    this.callback = callback;
}

if (callback != null) {
    callback.onCallback("Callback result");
}

public class MainActivity extends AppCompatActivity implements CallbackInterface {
    // ...

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

        // 创建标准Java类的实例
        StandardJavaClass javaClass = new StandardJavaClass();

        // 设置回调
        javaClass.setCallback(this);
    }

    @Override
    public void onCallback(String result) {
        // 处理回调结果
        Log.d("Callback", result);
    }
}