将数据从一个活动传递到另一活动的交互者 [英] Passing data from one activity to interactor of another activity

问题描述

我正在开发聊天应用程序.有聊天室，这些房间内有消息.当用户单击聊天室时，我想转到另一个显示消息的活动.

I'm developing a chat application. There are chatrooms and inside these rooms there are messages. When a user clicks on the chatroom I want to go to another activity where messages are displayed.

在我的适配器类中，我用 onBindViewHolder 编写了此 onclick()方法，通常在该方法中与所需数据一起使用.像这样:

In my adapter class, I have this onclick() method written in onBindViewHolder where I would normally make an intent along with the data I need. Something like this:

@Override
public void onBindViewHolder(@NonNull ChatRoomAdapter.ChatRoomViewHolder holder, final int position) {
    holder.mRoomTitle.setText(mChatRooms.get(position).getTitle());
    holder.mRoomDescription.setText(mChatRooms.get(position).getDescription());

    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(this, NextActivity.java);
            intent.putExtra("test", mChatRooms.get(position).getTitle());
        }
    });
}

但是我正在尝试MVP架构设计，我想将 roomTitle 传递给下一个活动的Interactor/presenter类.我该如何实现?

But I'm trying the MVP architecture design and I want to pass roomTitle to the Interactor/presenter class of my next activity. How can I achieve this?

推荐答案

在RecyclerView适配器中，您需要在适配器中传递onItemClickListener.

In RecyclerView adapter you need to pass a onItemClickListener in the adapter.

请参阅Google的MVP示例-> https://github.com/googlesamples/android-architecture/tree/todo-mvp/

Refer to the Google's MVP sample - > https://github.com/googlesamples/android-architecture/tree/todo-mvp/

尤其是在TaskFragment中引用TaskItemListener.他们正在做您想要达到的目标.在此，他们从任务列表(recyclervView)中打开任务详细信息(新活动).

Especially refer the TaskItemListener in TaskFragment. They are doing the same thing what you are trying to achieve. In this they open Task details (new activity) from List of tasks(recyclervView).

/**
 * Listener for clicks on tasks in the ListView.
 */
TaskItemListener mItemListener = new TaskItemListener() {
    @Override
    public void onTaskClick(Task clickedTask) {
        mPresenter.openTaskDetails(clickedTask);
    }

    @Override
    public void onCompleteTaskClick(Task completedTask) {
        mPresenter.completeTask(completedTask);
    }

    @Override
    public void onActivateTaskClick(Task activatedTask) {
        mPresenter.activateTask(activatedTask);
    }
};

然后将其传递到Recycler视图的适配器

And then pass it to adapter of Recycler view

mListAdapter = new TasksAdapter(new ArrayList<Task>(0), mItemListener);

然后在项目上单击

rowView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mItemListener.onTaskClick(task);
            }
        });

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