Java 如何在RecyclerView中的一个项目中找到两个文本块?
我已经用视图持有者和一个列表创建了RecyclerView。但我需要一个开始的文本视图和结束的第二个。我怎么做 我用两个文本视图创建了布局,在这些位置上已经有了。但是我应该设置第一个文本视图动物名和第二个人物名。 这是我的密码: MainActivity.javaJava 如何在RecyclerView中的一个项目中找到两个文本块?,java,android,android-layout,android-recyclerview,android-layout-editor,Java,Android,Android Layout,Android Recyclerview,Android Layout Editor,我已经用视图持有者和一个列表创建了RecyclerView。但我需要一个开始的文本视图和结束的第二个。我怎么做 我用两个文本视图创建了布局,在这些位置上已经有了。但是我应该设置第一个文本视图动物名和第二个人物名。 这是我的密码: MainActivity.java public class MainActivity extends AppCompatActivity { MyRecyclerViewAdapter adapter; @Override protected
public class MainActivity extends AppCompatActivity {
MyRecyclerViewAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<String> animalNames = new ArrayList<>();
animalNames.add("Horse");
animalNames.add("Cow");
animalNames.add("Camel");
animalNames.add("Sheep");
animalNames.add("Goat");
ArrayList<String> peopleNames = new ArrayList<>();
animalNames.add("Harry");
animalNames.add("John");
animalNames.add("Sergey");
animalNames.add("Steve");
animalNames.add("Woody");
RecyclerView recyclerView = findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(this, animalNames);
recyclerView.setAdapter(adapter);
adapter.setClickListener(new MyRecyclerViewAdapter.ItemClickListener() {
@Override
public void onItemClick(View view, int position) {
Toast.makeText(getApplicationContext(), "You clicked " + adapter.getItem(position) + " on row number " + position, Toast.LENGTH_SHORT).show();
}
});
}
}
public类MainActivity扩展了AppCompatActivity{
MyRecycleServiceAdapter适配器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList animalNames=新的ArrayList();
动物名称。添加(“马”);
动物名称。添加(“奶牛”);
动物名称。添加(“骆驼”);
动物名称。添加(“绵羊”);
动物名称。添加(“山羊”);
ArrayList peopleNames=新的ArrayList();
动物名称。添加(“哈里”);
动物名称。添加(“约翰”);
动物名称。添加(“Sergey”);
动物名称。添加(“史蒂夫”);
动物名称。添加(“伍迪”);
RecycleView RecycleView=findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(新的LinearLayoutManager(本));
适配器=新的MyRecycleServiceAdapter(这是animalNames);
recyclerView.setAdapter(适配器);
adapter.setClickListener(新的MyRecycleServiceAdapter.ItemClickListener(){
@凌驾
公共虚线单击(视图,int位置){
Toast.makeText(getApplicationContext(),“您单击了”+adapter.getItem(position)+“行号”+position,Toast.LENGTH_SHORT.show();
}
});
}
}
myRecycleServiceAdapter.java
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {
private List<String> mData;
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
MyRecyclerViewAdapter(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.custom_view, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String animal = mData.get(position);
holder.myTextView.setText(animal);
}
@Override
public int getItemCount() {
return mData.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView myTextView;
TextView myTextView2;
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.tvAnimalName);
myTextView2 = itemView.findViewById(R.id.tvAnimalName2);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
String getItem(int id) {
return mData.get(id);
}
void setClickListener(ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
公共类MyRecycleServiceAdapter扩展了RecycleView.Adapter{
私有列表数据;
私人停车场;
私有项ClickListener McClickListener;
MyRecycleServiceAdapter(上下文、列表数据){
this.mInflater=LayoutInflater.from(上下文);
this.mData=数据;
}
@凌驾
public ViewHolder onCreateViewHolder(视图组父级,int-viewType){
视图=最小平坦度。充气(R.layout.custom_视图,父视图,false);
返回新的ViewHolder(视图);
}
@凌驾
公共无效onBindViewHolder(ViewHolder,int位置){
字符串animal=mData.get(位置);
holder.myTextView.setText(动物);
}
@凌驾
public int getItemCount(){
返回mData.size();
}
公共类ViewHolder扩展了RecyclerView.ViewHolder实现了View.OnClickListener{
文本视图myTextView;
TextView myTextView2;
ViewHolder(视图项视图){
超级(项目视图);
myTextView=itemView.findViewById(R.id.tvAnimalName);
myTextView2=itemView.findViewById(R.id.tvAnimalName2);
setOnClickListener(这个);
}
@凌驾
公共void onClick(视图){
if(mClickListener!=null)mClickListener.onItemClick(视图,getAdapterPosition());
}
}
字符串getItem(int-id){
返回mData.get(id);
}
void setClickListener(项ClickListener项ClickListener){
this.mClickListener=itemClickListener;
}
公共接口项ClickListener{
void onItemClick(视图,int位置);
}
}
自定义视图.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:id="@+id/tvAnimalName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_marginStart="8dp"
android:textSize="20sp" />
<TextView
android:id="@+id/tvPersonName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_marginEnd="8dp"
android:textSize="20sp" />
</RelativeLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/rvAnimals"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
同时在回收器视图的构造函数中传递人物数组列表
//喜欢活动
RecycleView RecycleView=findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(新的LinearLayoutManager(本));
adapter=new MyRecycleServiceAdapter(此、animalNames、personNames);
//在适配器类中
同时为个人创建一个列表
私有列表数据;
私人名单;
//适配器构造函数
MyRecycleServiceAdapter(上下文、列表数据、列表mpersonData){
this.mInflater=LayoutInflater.from(上下文);
this.mData=数据;
this.mpersonData=mpersonData;
}
//onbind视图保持器
@凌驾
公共无效onBindViewHolder(ViewHolder,int位置){
字符串animal=mData.get(位置);
字符串person=mData.get(位置);
holder.myTextView.setText(动物);
holder.myTextView.setText(person);
}
//将tv id名称更改为person
ViewHolder(视图项视图){
超级(项目视图);
myTextView=itemView.findViewById(R.id.tvAnimalName);
//把这个改成人名
myTextView2=itemView.findViewById(R.id.tvPersonalName);
setOnClickListener(这个);
}
现在,您还将在“回收器视图”文本字段中设置人名
粘贴此代码而不是相对布局使用线性布局
你可以有两列,如问题中所述
同时在回收器视图的构造函数中传递人物数组列表
//喜欢活动
RecycleView RecycleView=findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(新的LinearLayoutManager(本));
adapter=new MyRecycleServiceAdapter(此、animalNames、personNames);
//在适配器类中
同时为个人创建一个列表
私有列表数据;
私人名单;
//适配器构造函数
MyRecycleServiceAdapter(上下文、列表数据、列表mpersonData){
this.mInflater=LayoutInflater.from(上下文);
this.mData=数据;
this.mpersonData=mpersonData;
}
//onbind视图保持器
@凌驾
公共无效onBindViewHolder(ViewHolder,int位置){
字符串animal=mData.get(位置);
字符串person=mData.get(位置);
holder.myTextView.setText(动物);
holder.myTextView.setText(person);
}
//将tv id名称更改为person
观众
Pass the person array list also in the constructor of the recycler view
//like in activity
RecyclerView recyclerView = findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(this, animalNames,personNames);
//in adapter class
create a list for person also
private List<String> mData;
private List<String> mpersonData;
// adapter constructor
MyRecyclerViewAdapter(Context context, List<String> data,List<String> mpersonData) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
this.mpersonData = mpersonData;
}
//onbind view holder
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String animal = mData.get(position);
String person = mData.get(position);
holder.myTextView.setText(animal);
holder.myTextView.setText(person);
}
//change the tv id name to person
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.tvAnimalName);
// just change this to person name
myTextView2 = itemView.findViewById(R.id.tvPersonalName);
itemView.setOnClickListener(this);
}
Now you will set person name also in the recycler view text field
Paste this code instead of relative layout use linear layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:id="@+id/tvAnimalName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:weight="1"
android:gravity="start"
android:layout_marginStart="8dp"
android:textSize="20sp" />
<TextView
android:id="@+id/tvPersonName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:weight="1"
android:gravity="end"
android:layout_marginEnd="8dp"
android:textSize="20sp" />
</LinearLayout>
and you can have two columns as mentioned in the question