大佬教程收集整理的这篇文章主要介绍了将 ArrayLIst 添加到 Recyclerview，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
我在其中有一个 AlertDialog，曾经有一个 ListVIEw，其中显示了 ArrayList 的内容。为了美观，我决定用 RecyclervIEw,Card 替换它，然后问题就开始了。
项目是在工作期间添加到 ArrayList <String> mainListWord 的，它们应该包含在 RecyclervIEw 卡片中。问题是要么整个列表一次落入一张卡片，要么每张下一张卡片都包含前面的元素+1。例如：第一张卡片：1个元素，第二张卡片：2个元素，等等。
如何实现，当一个新元素加入数组时，它会被放置在自己的卡片中？
activity_main.xml
<?xml version="1.0" enCoding="utf-8"?>
<relativeLayout
xmlns:androID="http://scheR_170_11845@as.androID.com/apk/res/androID"
xmlns:tools="http://scheR_170_11845@as.androID.com/tools"
androID:layout_wIDth="match_parent"
androID:layout_height="match_parent"
tools:context=".MainActivity">
<EditText
androID:ID="@+ID/innerText"
androID:layout_wIDth="wrap_content"
androID:layout_height="50dp"
androID:layout_centerInParent="true"/>
<button
androID:ID="@+ID/press"
androID:layout_wIDth="wrap_content"
androID:layout_height="wrap_content"
androID:layout_margintop="10dp"
androID:text="Press"
androID:layouT_Below="@ID/innerText"
androID:layout_centerHorizontal="true"
androID:onClick="openDialog"/>
</relativeLayout>
recycler_item.xml
<?xml version="1.0" enCoding="utf-8"?>
<androIDx.cardvIEw.Widget.CardVIEw
xmlns:androID="http://scheR_170_11845@as.androID.com/apk/res/androID"
xmlns:tools="http://scheR_170_11845@as.androID.com/tools"
androID:layout_wIDth="match_parent"
androID:layout_height="wrap_content"
xmlns:app="http://scheR_170_11845@as.androID.com/apk/res-auto"
app:cardCornerRadius="4dp"
androID:layout_margin="4dp"
app:cardBACkgroundcolor="@color/colorCardBACk">
<relativeLayout
androID:layout_wIDth="match_parent"
androID:layout_height="match_parent"
androID:layout_margin="5dp"
androID:BACkground="@color/colorCard">
<ImageVIEw
androID:ID="@+ID/imageVIEw_1"
androID:layout_wIDth="50dp"
androID:layout_height="50dp"
androID:padding="4dp" />
<TextVIEw
androID:ID="@+ID/textvIEw_1"
androID:layout_wIDth="wrap_content"
androID:layout_height="wrap_content"
androID:text="Text_1"
androID:textStyle="bold"
androID:textcolor="@androID:color/black"
androID:layout_centerInParent="true"
androID:textSize="16sp"
androID:layout_marginStart="5dp"
androID:layout_toEndOf="@ID/imageVIEw_1"/>
</relativeLayout>
</androIDx.cardvIEw.Widget.CardVIEw>
stats_fragment.xml
<?xml version="1.0" enCoding="utf-8"?>
<relativeLayout
xmlns:androID="http://scheR_170_11845@as.androID.com/apk/res/androID"
xmlns:tools="http://scheR_170_11845@as.androID.com/tools"
androID:layout_wIDth="match_parent"
androID:layout_height="match_parent"
tools:context=".MainActivity">
<androIDx.recyclervIEw.Widget.RecyclerVIEw
androID:ID="@+ID/recycler_vIEw"
androID:layout_wIDth="match_parent"
androID:layout_height="match_parent"
androID:padding="50dp"
androID:layout_margin="10dp"
androID:BACkground="@color/colOraccent"
androID:scrollbars="vertical"
androID:layout_above="@ID/butClose"/>
<button
androID:ID="@+ID/butClose"
androID:layout_wIDth="wrap_content"
androID:layout_height="wrap_content"
androID:layout_marginBottom="5dp"
androID:layout_centerHorizontal="true"
androID:layout_alignParentBottom="true"/>
</relativeLayout>
@H_526_19@mainActivity.java
public class MainActivity extends AppCompatActivity {
private EditText innerText;
private button press,butClose;
private ArrayList<RecyclerVIEwItem> recyclerVIEwItem;
private ArrayList<String> mainListWord;
private AlertDialog OptionDialog;
private RecyclerVIEw recyclerVIEw;
private RecyclerVIEw.Adapter adapter;
private RecyclerVIEw.LayoutManager layoutManager;
@requiresAPI(API = Build.VERSION_CODEs.O)
@OverrIDe
protected voID onCreate(Bundle savedInstanceStatE) {
super.onCreate(savedInstanceStatE);
setContentVIEw(R.layout.activity_main);
recyclerVIEwItem = new ArrayList<>();
mainListWord = new ArrayList<>();
innerText = findVIEwByID(R.ID.innerText);
press = findVIEwByID(R.ID.butClosE);
}
@requiresAPI(API = Build.VERSION_CODEs.O)
public voID makeRecyclerList(ArrayList<String> incomE){
String[] ListWord_lenght = income.toArray(new String[0]);
String keyWord = (String.join("",ListWord_lenght));
recyclerVIEwItem.add(new RecyclerVIEwItem(R.drawable.star,keyWord));
}
@requiresAPI(API = Build.VERSION_CODEs.O)
public voID openDialog(VIEw v){
String word = innerText.getText().toString();
mainListWord.add(word);
makeRecyclerList(mainListWord);
Dialogus();
innerText.setText("");
}
public voID Dialogus(){
LayoutInflater li = (LayoutInflater) this.getSystemservice(Context.LAYOUT_INFLATER_serviCE);
VIEw v = li.inflate(R.layout.stats_fragment,null,falsE);
OptionDialog = new AlertDialog.builder(this).create();
OptionDialog.settitle("TesTinfo");
recyclerVIEw = v.findVIEwByID(R.ID.recycler_vIEw);
recyclerVIEw.setHasFixedSize(true);
adapter = new RecyclerVIEwAdapter(recyclerVIEwItem);
layoutManager = new linearlayoutmanager(this);
recyclerVIEw.setAdapter(adapter);
recyclerVIEw.setLayoutManager(layoutManager);
butClose = v.findVIEwByID(R.ID.butClosE);
OptionDialog.setVIEw(v);
OptionDialog.setCancelable(true);
butClose.setBACkgroundcolor(color.CYAN);
butClose.setonClickListener(new VIEw.onClickListener() {
public voID onClick(VIEw v) {
OptionDialog.dismiss();
}
});
OptionDialog.show();
}
}
RecyclerVIEwAdapter.java
public class RecyclerVIEwAdapter extends RecyclerVIEw.Adapter<RecyclerVIEwAdapter.RecyclerVIEwVIEwHolder> {
private ArrayList<RecyclerVIEwItem> arrayList;
public static class RecyclerVIEwVIEwHolder extends RecyclerVIEw.VIEwHolder {
public ImageVIEw imageVIEw_1;
public TextVIEw textvIEw_1;
public RecyclerVIEwVIEwHolder(@NonNull VIEw itemVIEw) {
super(itemVIEw);
imageVIEw_1 = itemVIEw.findVIEwByID(R.ID.imageVIEw_1);
textvIEw_1 = itemVIEw.findVIEwByID(R.ID.textvIEw_1);
}
}
public RecyclerVIEwAdapter(ArrayList<RecyclerVIEwItem> arrayList){
this.arrayList = arrayList;
}
@NonNull
@OverrIDe
public RecyclerVIEwVIEwHolder onCreateVIEwHolder(@NonNull VIEwGroup vIEwGroup,int vIEwTypE) {
View view = LayoutInflater.from(vIEwGroup.getContext()).inflate(R.layout.recycler_item,vIEwGroup,falsE);
RecyclerVIEwVIEwHolder recyclerVIEwVIEwHolder= new RecyclerVIEwVIEwHolder(vIEw);
return recyclerVIEwVIEwHolder;
}
@OverrIDe
public voID onBindVIEwHolder(@NonNull RecyclerVIEwVIEwHolder recyclerVIEwVIEwHolder,int position) {
RecyclerVIEwItem recyclerVIEwItem = arrayList.get(position);
recyclerVIEwVIEwHolder.imageVIEw_1.setimageresource(recyclerVIEwItem.getimageresource());
recyclerVIEwVIEwHolder.textvIEw_1.setText(recyclerVIEwItem.getText_1());
}
@OverrIDe
public int getItemCount() {
return arrayList.size();
}
}
RecyclerVIEwItem.java
package freijer.app.one;
public class RecyclerVIEwItem {
privatE int imageresource;
private String text_1;
public int getimageresource() {
return imageresource;
}
public voID setimageresource(int imageresourcE) {
this.imageresource = imageresource;
}
public String getText_1() {
return text_1;
}
public voID setText_1(String text_1) {
this.text_1 = text_1;
}
public RecyclerVIEwItem(int imageresource,String text_1) {
this.imageresource = imageresource;
this.text_1 = text_1;
}
}
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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