Question

我正在尝试创建通用/基本表单，无论它是activity还是fragment。为简单起见，Form可以这样提交：

class BaseFormActivity extends AppCompatActivity {

  public abstract void submitForm();

  @Override
  public void setContentView(int layoutResID) {
    ConstraintLayout activityBaseForm = (ConstraintLayout) getLayoutInflater().inflate(R.layout.activity_base_form, null);
    FrameLayout frameBaseForm = activityBaseForm.findViewById(R.id.frame_base_form);

    getLayoutInflater().inflate(layoutResID, frameBaseForm, true);

    findViewById(R.id.btn_submit).setOnClickListener(v -> submitForm()) // for the sake of simplicity, there's a button that will trigger submitForm() method

    super.setContentView(activityBaseForm);
  }
}

在这里，我只包括一些表单的默认布局，以及一个用于触发抽象方法submitForm()的提交按钮。但是，这仅适用于Android activities。如何在不编写fragments的情况下也可用于BaseFormFragment？我不想重复从activity到fragment的默认行为，反之亦然。

Answer 1

将其视为示例Presenter类，该类处理您的按钮单击并获取所有表单字段并发送到服务器

public class MyPresenter {
     private MyPresenterIView iViewInstance;

        public MyPresenter(MyPresenterIView iView){
          this.iViewInstance=iView;
        }

        public void onSubmitClick(){
          //write your logic here
         String fieldOneText=iViewInstance.getFieldOneText();
         sendToServer(fieldOneText);
        }

        private void sendToServer(String stringInfo){
        //send info to server
        }

    }

MyPresenterIView界面

public interface MyPresenterIView{
  String getFieldOneText();
}

并在“活动”或“片段”中使用Presenter

//implement MyPresenterIView to your Activity or Fragment 
public class MyActivity extent SomeActivity implements MyPresenterIView{
private MyPresenter myPresenter;

//in onCreate or onCreateView(if its  a fragment) initialize myPresenter
protected void onCreate(..){
myPresenter=new MyPresenter(this);//this will enforce Activity/Fragment to implement IView
}


@Override //comes from MyPresenterIView
public String getFieldOneText(){
return ((EditText)findViewById(R.id.edttext_field_one)).getText().toString().trim();
}
}

创建通用/基本表单类，无论活动还是片段

1 个答案: