Question

我正在创建一个应用程序，它将使用具有交错布局的RecyclerView显示图片。我想从tumblr博客中提取图像，并在recyclerView中实现它们。我已经注册了我的应用并收到了OAuth Consumer Key和Secret Key。现在，我是新手，我不知道如何将这个代码实现到我设置的recyclerView中。这就是我想要完成的。只需在应用程序上显示图像即可。无需登录。功能不多，只需显示图片。

当我选择OAuth身份验证选项

时，我得到了这个

// Authenticate via OAuth
JumblrClient client = new JumblrClient("key");
client.setToken("key");

// Make the request
Map<String, Object> params = new HashMap<String, Object>();
params.put("type", "photo");
List<Post> posts = client.blogPosts("url", params);

当我选择API密钥身份验证选项

时，我得到了这个

// Authenticate via API Key
JumblrClient client = new JumblrClient("key");

// Make the request
Map<String, Object> params = new HashMap<String, Object>();
params.put("type", "photo");
List<Post> posts = client.blogPosts("url", params);

有一个JSON格式的示例输出，它不提供URL，因此我无法在应用程序中解析JSON。我只剩下这个java代码，而我正在使用的教程是使用JSON HERE

Answer 1

首先，您需要为recycler视图创建一个适配器。

请注意，我在代码中使用picasso库来获取图像。因此，请务必将其包含在您的gradle文件中。

Recycler View Adapter的示例代码

package com.sample.demo.adaptor;

import android.content.Context;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;

import java.util.List;


public class ImagesRecyclerViewAdaptor extends RecyclerView.Adapter<ImagesRecyclerViewAdaptor.ImagesViewHolder> {

    private List<Post> posts;

    public ImagesRecyclerViewAdaptor(List<Post> _posts) {
        this.posts = _posts;
    }

    @Override
    public int getItemCount() {
        return posts.size();
    }

    @Override
    public void onBindViewHolder(ImagesViewHolder imageViewHolder, int i) {
        Post ci = posts.get(i);
        if (ci != null) {

            // EXTRACT THE URL FROM POST NOT SURE WHAT FUNCTION TO USE
            Uri uri = Uri.parse();
            Context context = imageViewHolder.vPostImage.getContext();
            Picasso.with(context).load(uri).into(imageViewHolder.vPostImage);
        }
    }

    @Override
    public ImagesViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View itemView = LayoutInflater.
                from(viewGroup.getContext()).
                inflate(R.layout.image_cardview, viewGroup, false);

        ImagesViewHolder viewHolder = new ImagesViewHolder(itemView);
        return viewHolder;
    }

    public static class ImagesViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        protected ImageView vPostImage;

        public ImagesViewHolder(View v) {
            super(v);
            v.setOnClickListener(this);

            vPostImage = (ImageView) v.findViewById(R.id.card_hotel_image);
        }

        @Override
        public void onClick(View v) {

        }
    }
}

从您的主要活动或片段调用

// Authenticate via API Key
JumblrClient client = new JumblrClient("key");

// Make the request
Map<String, Object> params = new HashMap<String, Object>();
params.put("type", "photo");
List<Post> posts = client.blogPosts("url", params);

final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);

RecyclerView imageList = (RecyclerView) rootView.findViewById(R.id.imageList);
imageList.setHasFixedSize(true);
imageList.setLayoutManager(layoutManager);

ImagesRecyclerViewAdaptor imageAdaptor = new ImagesRecyclerViewAdaptor(posts);
imageList.setAdapter(imageAdaptor);

在Android应用中仅显示来自Tumblr博客的图片帖子

1 个答案: