android Mvp模式將上下文作為視圖傳遞

Question

我試圖將Mainactivity作為視圖傳遞給演示者

(In MainActivity)    
mainPresenter = new MainPresenter(this);

(Presenter cont)
public MainPresenter(View view) {
      this.view = view;
      user  = new User();
   }

但是，此拋出錯誤是無效的轉換或其他錯誤。 我想念什么嗎？

該代碼是從這里

Answer 1

你應該有這樣的東西：

public interface YourView {
    void doSomething();
}

public MainActivity extends Activity implements YourView {

mainPresenter = new MainPresenter(this);

}

public MainPresenter(YourView view) {
      this.view = view;
      view.doSomething();
   }