{"id":16245,"date":"2024-03-15T12:36:13","date_gmt":"2024-03-15T12:36:13","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-android-adapter-recycleview\/"},"modified":"2025-08-07T01:24:02","modified_gmt":"2025-08-07T01:24:02","slug":"how-to-use-the-android-adapter-recycleview","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-android-adapter-recycleview\/","title":{"rendered":"How to use the Android adapter RecycleView"},"content":{"rendered":"

The steps for using a RecyclerView adapter are as follows:<\/p>\n

    \n
  1. Create an adapter class that inherits from RecyclerView.Adapter and implements the following methods:<\/li>\n
  2. onCreateViewHolder(): create a ViewHolder object and return it<\/li>\n
  3. Bind data to the ViewHolder object in the onBindViewHolder() method.<\/li>\n
  4. getItemCount(): returns the size of the data collection<\/li>\n
  5. Create a ViewHolder class that extends RecyclerView.ViewHolder, and initialize the views in the layout in the constructor.<\/li>\n
  6. Initialize the RecyclerView and set the adapter in the Activity or Fragment.<\/li>\n
  7. Create a LayoutManager object to set the layout style of the RecyclerView (such as LinearLayoutManager, GridLayoutManager, etc.).<\/li>\n
  8. Create an adapter object and pass the data set to the adapter’s constructor.<\/li>\n
  9. Invoke the setLayoutManager() method of RecyclerView to set the LayoutManager.<\/li>\n
  10. Use the method setAdapter() of RecyclerView to set the adapter.<\/li>\n
  11. Implement the methods in the adapter.<\/li>\n
  12. In the onCreateViewHolder() method, the layout file is converted to a View object using LayoutInflater.from(context) and a ViewHolder object is created and returned.<\/li>\n
  13. In the onBindViewHolder() method, fetch the corresponding data object based on the position, and then bind the data to the views of the ViewHolder object.<\/li>\n
  14. getItemCount(): returns the size of the data collection<\/li>\n
  15. Optional: Add features such as divider lines and click events to the RecyclerView.<\/li>\n<\/ol>\n

    Here is a basic example code:<\/p>\n

    Adapter class:<\/p>\n

    public<\/span> class<\/span> MyAdapter<\/span> extends<\/span> RecyclerView<\/span>.Adapter<MyAdapter.ViewHolder> {\r\n    private<\/span> List<String> data;\r\n\r\n    public<\/span> MyAdapter<\/span>(List<String> data)<\/span> {\r\n        this<\/span>.data = data;\r\n    }\r\n\r\n    @Override<\/span>\r\n    public<\/span> ViewHolder onCreateViewHolder<\/span>(ViewGroup parent, int<\/span> viewType)<\/span> {\r\n        View<\/span> view<\/span> =<\/span> LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false<\/span>);\r\n        return<\/span> new<\/span> ViewHolder<\/span>(view);\r\n    }\r\n\r\n    @Override<\/span>\r\n    public<\/span> void<\/span> onBindViewHolder<\/span>(ViewHolder holder, int<\/span> position)<\/span> {\r\n        String<\/span> item<\/span> =<\/span> data.get(position);\r\n        holder.textView.setText(item);\r\n    }\r\n\r\n    @Override<\/span>\r\n    public<\/span> int<\/span> getItemCount<\/span>()<\/span> {\r\n        return<\/span> data.size();\r\n    }\r\n\r\n    public<\/span> static<\/span> class<\/span> ViewHolder<\/span> extends<\/span> RecyclerView<\/span>.ViewHolder {\r\n        public<\/span> TextView textView;\r\n\r\n        public<\/span> ViewHolder<\/span>(View itemView)<\/span> {\r\n            super<\/span>(itemView);\r\n            textView = itemView.findViewById(R.id.text_view);\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
    Using adapters in Activity:<\/p>\n
    public<\/span> class<\/span> MainActivity<\/span> extends<\/span> AppCompatActivity<\/span> {\r\n    private<\/span> RecyclerView recyclerView;\r\n    private<\/span> MyAdapter adapter;\r\n    private<\/span> List<String> data;\r\n\r\n    @Override<\/span>\r\n    protected<\/span> void<\/span> onCreate<\/span>(Bundle savedInstanceState)<\/span> {\r\n        super<\/span>.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_main);\r\n\r\n        recyclerView = findViewById(R.id.recycler_view);\r\n        recyclerView.setLayoutManager(new<\/span> LinearLayoutManager<\/span>(this<\/span>));\r\n\r\n        data = new<\/span> ArrayList<\/span><>();\r\n        \/\/ \u6dfb\u52a0\u6570\u636e\u5230data\u96c6\u5408\u4e2d<\/span>\r\n\r\n        adapter = new<\/span> MyAdapter<\/span>(data);\r\n        recyclerView.setAdapter(adapter);\r\n    }\r\n}\r\n<\/code><\/pre>\n
    In the above code, R.layout.item_layout is the layout file in the adapter, which includes a TextView to display data. In the onBindViewHolder() method, the data from the data collection is bound to the textView of the ViewHolder object. In the Activity, the RecyclerView layout is set with LinearLayoutManager, and an adapter object is created and set to the RecyclerView. Updating the data display of the RecyclerView can be done by calling adapter.notifyDataSetChanged() method.<\/p>\n","protected":false},"excerpt":{"rendered":"
    The steps for using a RecyclerView adapter are as follows: Create an adapter class that inherits from RecyclerView.Adapter and implements the following methods: onCreateViewHolder(): create a ViewHolder object and return it Bind data to the ViewHolder object in the onBindViewHolder() method. getItemCount(): returns the size of the data collection Create a ViewHolder class that extends […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-16245","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"\nHow to use the Android adapter RecycleView - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how to use the android adapter recycleview. 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