如何从Android中的RecyclerView适配器中获取物品

在旧代码中，当我使用自定义适配器使用ListView时，可以使用此代码获取项目。

Message msg = (Message) adapter.getItem(poistion); 

现在我正在实施RecyclerView。 我怎样才能从RecyclerView适配器获得物品？

Answer 1

你必须自己实现它。

在自定义适配器中添加一个新方法，就完成了。

 public Message getItem(int position) { return messageList.get(position); } 

Answer 2

我认为getItem的正确方法是通过RecyclerView LayoutManager。

 View v = recyclerView.getLayoutManager().findViewByPosition(position); 

Answer 3

Onclicklistener做了诡计

 public class MainActivity extends AppCompatActivity { Context context; RecyclerView recyclerView; RelativeLayout relativeLayout; RecyclerView.Adapter recyclerviewAdapter; RecyclerView.LayoutManager recyclerViewLayoutManager; String[] numbers = { "ANDROID", "PHP", "BLOGGER", "WORDPRESS", "JOOMLA", "ASP.NET", "JAVA", "C++", "MATHS", "HINDI", "ENGLISH"}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); context = getApplicationContext(); relativeLayout = (RelativeLayout)findViewById(R.id.relativelayout1); recyclerView = (RecyclerView)findViewById(R.id.recyclerview1); recyclerViewLayoutManager = new LinearLayoutManager(context); recyclerView.setLayoutManager(recyclerViewLayoutManager); recyclerviewAdapter = new RecyclerViewAdapter(context,numbers); recyclerView.setAdapter(recyclerviewAdapter); } public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> { String[] numvalues; Context context; View view1; ViewHolder viewHolder1; TextView textView; public RecyclerViewAdapter(Context context1,String[] numvalues1){ numvalues = numvalues1; context = context1; } public class ViewHolder extends RecyclerView.ViewHolder{ public TextView textView; public ViewHolder(View v){ super(v); textView = (TextView)v.findViewById(R.id.number_textview); } } @Override public RecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { view1 = LayoutInflater.from(context).inflate(R.layout.recyclerview_items,parent,false); // view1.setOnClickListener(new MyOnClickListener()); view1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { int itemPosition = recyclerView.indexOfChild(v); // Toast.makeText(MainActivity.this,"Selected item position is---"+ itemPosition,Toast.LENGTH_SHORT).show(); textView = (TextView)v.findViewById(R.id.number_textview); Toast.makeText(MainActivity.this,"Selected val of clicked position is---"+ textView.getText().toString(),Toast.LENGTH_SHORT).show(); } }); viewHolder1 = new ViewHolder(view1); return viewHolder1; } @Override public void onBindViewHolder(ViewHolder holder, int position) { holder.textView.setText(numvalues[position]); } @Override public int getItemCount() { return numvalues.length; } } } 

Answer 4

在recycleview中，您可以使用下面的代码从RecyclerView适配器中获取项目，

 RecyclerView rv_list_frames; public frames getItem(int position) { return rv_list_frames.get(position); } 

我希望以上，可以帮助您获取物品..

Answer 5

 @Override public void onClick(View view, int position) { System.out.println("cardetail_activity"+position); Intent i = new Intent(getActivity(), CarDetail.class); ListingDataprovider data_provider=arrayList.get(position); i.putExtra("ID",data_provider.getId()); getActivity().startActivity(i); }