按从 TCP 服务器获得的数量插入 recyclerView？

Question

我正在尝试用 scrollView 中的 cardView 制作一个简单的 recyclerView 这将通过按数字设置它来创建一个新视图，实际上我的应用程序将从 TCP 服务器 接收一个带有数字的字符串，我必须创建相同数量的 recyclerView作为TCP服务器发送的号码，我已经做了一个cardView，这里是代码：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="180dp"
android:baselineAligned="false"
android:orientation="vertical">

<android.support.v7.widget.CardView
    android:id="@+id/cv"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="163dp"
        android:background="@android:color/white"
        android:padding="16dp">

        <ImageView
            android:id="@+id/self_picture"
            android:layout_width="120dp"
            android:layout_height="match_parent"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_marginRight="16dp"
            app:srcCompat="@drawable/selfcassa" />


        <TextView
            android:id="@+id/n_cassa"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_centerVertical="true"
            android:layout_toEndOf="@+id/self_picture"
            android:text="CASSA SELF N°1"
            android:textAlignment="center"
            android:textColor="@color/red"
            android:textSize="42sp"
            android:textStyle="bold" />

    </RelativeLayout>

</android.support.v7.widget.CardView>

这是 RecyclerViewSelf (recyclerViewAdapter) :

public class RecyclerViewSelf extends 
RecyclerView.Adapter<RecyclerViewSelf.ViewHolder> {

private ArrayList<String> selfList;

public RecyclerViewSelf(ArrayList<String> selfList){
    this.selfList = selfList;
}


@Override
public RecyclerViewSelf.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View contactView = LayoutInflater.from(parent.getContext()).inflate(R.layout.self_blueprint, parent, false);
    return new ViewHolder(contactView);
}

@Override
public void onBindViewHolder(RecyclerViewSelf.ViewHolder viewHolder, int position) {
    viewHolder.n_cassa.setText(selfList.get(position));

}

@Override
public int getItemCount() {
    return selfList != null ? selfList.size() : 0;
}

public class ViewHolder extends RecyclerView.ViewHolder{
    private TextView n_cassa;
    private ImageView img;
    public ViewHolder(View view) {
        super(view);

        n_cassa = view.findViewById(R.id.n_cassa);
        img = view.findViewById(R.id.self_picture);
        }
    }

}

这里是 activity 我 回忆起 RecyclerView:

public class help extends AppCompatActivity {

private ArrayList selfList;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_help);
    Utils.darkenStatusBar(this, R.color.colorAccent);
    ImageButton home = (ImageButton) findViewById(R.id.casa);

    initViews();

    home.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
         finish();
        }
    });
}

private void initViews(){
    RecyclerView recyclerView = (RecyclerView)findViewById(R.id.recyclerviewSelfMachine);
    recyclerView.setHasFixedSize(true);
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(layoutManager);

    selfList = new ArrayList<>();
    selfList.add("CASSA SELF N°1");
    selfList.add("CASSA SELF N°2");
    selfList.add("CASSA SELF N°3");
    selfList.add("CASSA SELF N°4");
    RecyclerView.Adapter adapter = new RecyclerViewSelf(selfList);
    recyclerView.setAdapter(adapter);
    }
}

更新问题

实际上我已经创建了一个 recyclerView，我在其中设置了数据并可视化了 4 cardViews，但现在我将创建 cardView 从 TCP 服务器 或我从 TCP 服务器 到 TCP 客户端 得到一个 string，以及现在我将创建 TCP 服务器 发送的字符串中的 cardViews 的数量。

Answer 1

在初始化另一个适配器时删除，如下所示

RecyclerViewSelf selfrecycler = new RecyclerViewSelf(this, selfList);

使用

 recyclerView.setAdapter(self);

代替

recyclerView.setAdapter(selfrecycler);

方法应该是这样的

private void prepareSelf() {
             Self s = new Self("CASSA SELF 1");
             selfList.add(s);
             self.notifyDataSetChanged();
}

Answer 2

我不确定我是否完全理解您的要求，但以下内容似乎符合我对您的要求。

    private void initViews(int tcpcount){
        String base = "CASSA SELF N°";
        RecyclerView recyclerView = (RecyclerView)findViewById(R.id.recyclerviewSelfMachine);
        recyclerView.setHasFixedSize(true);
        RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
        recyclerView.setLayoutManager(layoutManager);

        selfList = new ArrayList<>();
        for (int i=0; i < tcpcount; i++) {
            selfList.add(base + Integer.toString(i+1));
        }
        RecyclerView.Adapter adapter = new RecyclerViewSelf(selfList);
        recyclerView.setAdapter(adapter);
    }

显然，您会将 initView 的调用从 initViews(); 更改为 initViews(tcpnumber_as_int);

按从 TCP 服务器获得的数量插入 recyclerView？

Inserting recyclerView by amount of number got from TCP Server?

java

android

android-recyclerview

cardview