网站重构案例,怎么做自己的彩票网站,广东专业网站开发,摄影摄像网站建设以下是一个简单的示例代码#xff0c;演示如何在Android Studio中解析指定网页的图片URL#xff0c;并展示在错乱瀑布流布局中#xff1a;
1. 添加网络权限#xff1a;在项目的AndroidManifest.xml文件中添加以下权限#xff1a;
uses-permission android:name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:nameandroid.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:idid/recyclerViewandroid:layout_widthmatch_parentandroid:layout_heightmatch_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.AdapterImageAdapter.ImageViewHolder {private ListImageModel imageList;private Context context;public ImageAdapter(ListImageModel imageList, Context context) {this.imageList imageList;this.context context;}NonNullOverridepublic 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));ListImageModel 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 AsyncTaskVoid, Void, ListImageModel {Overrideprotected ListImageModel doInBackground(Void... voids) {ListImageModel imageList new ArrayList();try {Document document J
