自己创建一个app要多少钱百度seo关键词排名价格

以下是一个简单的示例代码，演示如何在Android Studio中解析指定网页的图片URL，并展示在错乱瀑布流布局中：

1. 添加网络权限：在项目的AndroidManifest.xml文件中添加以下权限：

<uses-permission android:name="android.permission.INTERNET" />

2. 创建一个新的Activity，并在XML布局文件中添加一个RecyclerView组件：

<androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/recyclerView"android:layout_width="match_parent"android:layout_height="match_parent" />

3. 创建一个数据模型类ImageModel来存储图片URL：

public class ImageModel {private String imageUrl;public ImageModel(String imageUrl) {this.imageUrl = imageUrl;}public String getImageUrl() {return imageUrl;}
}

4. 创建一个适配器类ImageAdapter来加载图片URL并展示在瀑布流布局中：

public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ImageViewHolder> {private List<ImageModel> imageList;private Context context;public ImageAdapter(List<ImageModel> imageList, Context context) {this.imageList = imageList;this.context = context;}@NonNull@Overridepublic ImageViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view = LayoutInflater.from(context).inflate(R.layout.item_image, parent, false);return new ImageViewHolder(view);}@Overridepublic void onBindViewHolder(@NonNull ImageViewHolder holder, int position) {ImageModel imageModel = imageList.get(position);String imageUrl = imageModel.getImageUrl();Glide.with(context).load(imageUrl).centerCrop().into(holder.imageView);}@Overridepublic int getItemCount() {return imageList.size();}public class ImageViewHolder extends RecyclerView.ViewHolder {ImageView imageView;public ImageViewHolder(@NonNull View itemView) {super(itemView);imageView = itemView.findViewById(R.id.imageView);}}
}

5. 在Activity中发起HTTP请求，并解析返回的数据：

public class MainActivity extends AppCompatActivity {private RecyclerView recyclerView;private ImageAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);recyclerView = findViewById(R.id.recyclerView);recyclerView.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));List<ImageModel> imageList = new ArrayList<>();adapter = new ImageAdapter(imageList, this);recyclerView.setAdapter(adapter);// 发起HTTP请求并解析数据new ParseDataTask().execute();}private class ParseDataTask extends AsyncTask<Void, Void, List<ImageModel>> {@Overrideprotected List<ImageModel> doInBackground(Void... voids) {List<ImageModel> imageList = new ArrayList<>();try {Document document = J