单击一项后，带有 RecycleView 的 onclicklistener 具有相同的设计
Onclicklistener with RecycleView with the same Design after click on one item
我需要在这个问题之后使用 Adaptor：
但是，实现有问题 this.Here 是我的 MainActivity:
public class MainActivity extends AppCompatActivity {
String TITLES[] = {"Home", "My Account", "Help", "About"};
int ICONS[] = {R.drawable.ic_home, R.drawable.acc, R.drawable.ic_help, R.drawable.ic_about};
String NAME = "Hi user!";
int PROFILE = R.drawable.ic_account;
RecyclerView mRecyclerView;
RecyclerView.Adapter mAdapter;
RecyclerView.LayoutManager mLayoutManager;
//items
RecyclerView recycle2;
RecyclerView.Adapter adapter;
RecyclerView.LayoutManager rec2lay;
DrawerLayout Drawer;
ActionBarDrawerToggle mDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//FOR each item
recycle2 = (RecyclerView)findViewById(R.id.rv);
recycle2.setHasFixedSize(true);
mRecyclerView = new RecyclerView(this);
recycle2.setLayoutManager(rec2lay);
adapter = new CardAdapter();
recycle2.setAdapter(adapter);
//try debuging
//Codes for MainRecycle view
mRecyclerView = (RecyclerView)findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new CardAdapter();
mRecyclerView.setAdapter(mAdapter);
Toolbar toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);
toolbar.setPadding(0, getStatusBarHeight(), 0, 0);
mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView);
mRecyclerView.setHasFixedSize(true);
mAdapter = new MyAdapter(TITLES,ICONS,NAME,PROFILE,this);
mRecyclerView.setAdapter(mAdapter);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);
mDrawerToggle = new ActionBarDrawerToggle(this,Drawer, toolbar, R.string.openDrawer, R.string.closeDrawer){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
Drawer.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}
public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}
}
我正在使用此适配器在 mainLayout 中显示 Recycleview：
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
List<NatureItem> mItems;
public CardAdapter() {
super();
mItems = new ArrayList<NatureItem>();
NatureItem nature = new NatureItem();
nature.setName("The Great Barrier Reef");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam.");
nature.setThumbnail(R.drawable.great_barrier_reef);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Grand Canyon");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua.");
nature.setThumbnail(R.drawable.grand_canyon);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Baltoro Glacier");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis.");
nature.setThumbnail(R.drawable.baltoro_glacier);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Iguazu Falls");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam.");
nature.setThumbnail(R.drawable.ig);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Aurora Borealis");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud.");
nature.setThumbnail(R.drawable.aurora_borealis);
mItems.add(nature);
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.recycler_view_card_item, viewGroup, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
NatureItem nature = mItems.get(i);
viewHolder.tvNature.setText(nature.getName());
viewHolder.tvDesNature.setText(nature.getDes());
viewHolder.imgThumbnail.setImageResource(nature.getThumbnail());
}
@Override
public int getItemCount() {
return mItems.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public ImageView imgThumbnail;
public TextView tvNature;
public TextView tvDesNature;
public ViewHolder(View itemView) {
super(itemView);
imgThumbnail = (ImageView)itemView.findViewById(R.id.img_thumbnail);
tvNature = (TextView)itemView.findViewById(R.id.tv_nature);
tvDesNature = (TextView)itemView.findViewById(R.id.tv_des_nature);
}
}
}
来自这个很好的教程：http://www.exoguru.com/android/ui/cardview/custom-android-list.html
这是我的适配器，当用户单击上面项目中的一个项目时（实际上 5 个项目） 用户转到另一个 activity（称为：items_recycleview 在我的应用程序中）每个项目（五个项目）具有相同的设计，但是在此 activity:
中具有不同的图片和不同的名称
物品适配器:
public class ItemsAdaptor extends RecyclerView.Adapter<ItemsAdaptor.PersonViewHolder> {
@Override
public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_main, viewGroup, false);
PersonViewHolder pvh = new PersonViewHolder(v);
return pvh;
}
@Override
public void onBindViewHolder(PersonViewHolder personViewHolder, int i) {
personViewHolder.personName.setText(persons.get(i).name);
personViewHolder.personAge.setText(persons.get(i).age);
personViewHolder.personPhoto.setImageResource(persons.get(i).photoId);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public int getItemCount() {
return persons.size();
}
List<Person> persons;
ItemsAdaptor(List<Person> persons){
this.persons = persons;
}
public static class PersonViewHolder extends RecyclerView.ViewHolder {
CardView cv;
TextView personName;
TextView personAge;
ImageView personPhoto;
PersonViewHolder(View itemView) {
super(itemView);
cv = (CardView)itemView.findViewById(R.id.cv);
personName = (TextView)itemView.findViewById(R.id.person_name);
personAge = (TextView)itemView.findViewById(R.id.person_age);
personPhoto = (ImageView)itemView.findViewById(R.id.person_photo);
}
}
}
那么，我们如何才能做到这一点以及我们需要做什么？
这是执行此操作后的日志错误：
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.test/com.test.test.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access0(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)' on a null object reference
at com.test.test.MainActivity.onCreate(MainActivity.java:41)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access0(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
看来，android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)
中有错误
有什么问题吗？
编辑： MainActivty 布局：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/DrawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="@+id/tool_bar"
layout="@layout/tool_bar">
</include>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/RecyclerView"
android:layout_width="290dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#ffffff"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
并且，items_recycleview:
<?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="match_parent"
android:padding="16dp"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/cv"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_photo"
android:src="@mipmap/ic_launcher"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_name"
android:layout_toRightOf="@+id/person_photo"
android:layout_alignParentTop="true"
android:textSize="30sp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_age"
android:layout_toRightOf="@+id/person_photo"
android:layout_below="@+id/person_name"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv"/>
</LinearLayout>
如何修复和执行此操作？
whatsapp 联系人或 Telegram 联系人之类的东西，当您单击一个联系人时，它会向我们显示相同的设计，但是，不同的号码或不同的 picture.and 设计，没有任何变化。
谢谢
由于布局文件中有 3 个 RecyclerView，因此需要创建 3 个 RecyclerView 变量。现在，您将两个 RecyclerView 分配给同一个名为 mRecylcerView 的变量。在创建其他 RecyclerView 变量的地方创建一个新的 RecyclerView 变量并改用它。例如：
RecyclerView recycle3;
RecyclerView.Adapter adapter2;
RecyclerView.LayoutManager rec3lay;
我需要在这个问题之后使用 Adaptor：
但是，实现有问题 this.Here 是我的 MainActivity:
public class MainActivity extends AppCompatActivity {
String TITLES[] = {"Home", "My Account", "Help", "About"};
int ICONS[] = {R.drawable.ic_home, R.drawable.acc, R.drawable.ic_help, R.drawable.ic_about};
String NAME = "Hi user!";
int PROFILE = R.drawable.ic_account;
RecyclerView mRecyclerView;
RecyclerView.Adapter mAdapter;
RecyclerView.LayoutManager mLayoutManager;
//items
RecyclerView recycle2;
RecyclerView.Adapter adapter;
RecyclerView.LayoutManager rec2lay;
DrawerLayout Drawer;
ActionBarDrawerToggle mDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//FOR each item
recycle2 = (RecyclerView)findViewById(R.id.rv);
recycle2.setHasFixedSize(true);
mRecyclerView = new RecyclerView(this);
recycle2.setLayoutManager(rec2lay);
adapter = new CardAdapter();
recycle2.setAdapter(adapter);
//try debuging
//Codes for MainRecycle view
mRecyclerView = (RecyclerView)findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new CardAdapter();
mRecyclerView.setAdapter(mAdapter);
Toolbar toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);
toolbar.setPadding(0, getStatusBarHeight(), 0, 0);
mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView);
mRecyclerView.setHasFixedSize(true);
mAdapter = new MyAdapter(TITLES,ICONS,NAME,PROFILE,this);
mRecyclerView.setAdapter(mAdapter);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);
mDrawerToggle = new ActionBarDrawerToggle(this,Drawer, toolbar, R.string.openDrawer, R.string.closeDrawer){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
};
Drawer.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}
public int getStatusBarHeight() {
int result = 0;
int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
if (resourceId > 0) {
result = getResources().getDimensionPixelSize(resourceId);
}
return result;
}
}
我正在使用此适配器在 mainLayout 中显示 Recycleview：
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
List<NatureItem> mItems;
public CardAdapter() {
super();
mItems = new ArrayList<NatureItem>();
NatureItem nature = new NatureItem();
nature.setName("The Great Barrier Reef");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam.");
nature.setThumbnail(R.drawable.great_barrier_reef);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Grand Canyon");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua.");
nature.setThumbnail(R.drawable.grand_canyon);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Baltoro Glacier");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis.");
nature.setThumbnail(R.drawable.baltoro_glacier);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Iguazu Falls");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam.");
nature.setThumbnail(R.drawable.ig);
mItems.add(nature);
nature = new NatureItem();
nature.setName("Aurora Borealis");
nature.setDes("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt" +
"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud.");
nature.setThumbnail(R.drawable.aurora_borealis);
mItems.add(nature);
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.recycler_view_card_item, viewGroup, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
NatureItem nature = mItems.get(i);
viewHolder.tvNature.setText(nature.getName());
viewHolder.tvDesNature.setText(nature.getDes());
viewHolder.imgThumbnail.setImageResource(nature.getThumbnail());
}
@Override
public int getItemCount() {
return mItems.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public ImageView imgThumbnail;
public TextView tvNature;
public TextView tvDesNature;
public ViewHolder(View itemView) {
super(itemView);
imgThumbnail = (ImageView)itemView.findViewById(R.id.img_thumbnail);
tvNature = (TextView)itemView.findViewById(R.id.tv_nature);
tvDesNature = (TextView)itemView.findViewById(R.id.tv_des_nature);
}
}
}
来自这个很好的教程：http://www.exoguru.com/android/ui/cardview/custom-android-list.html
这是我的适配器，当用户单击上面项目中的一个项目时（实际上 5 个项目） 用户转到另一个 activity（称为：items_recycleview 在我的应用程序中）每个项目（五个项目）具有相同的设计，但是在此 activity:
中具有不同的图片和不同的名称物品适配器:
public class ItemsAdaptor extends RecyclerView.Adapter<ItemsAdaptor.PersonViewHolder> {
@Override
public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_main, viewGroup, false);
PersonViewHolder pvh = new PersonViewHolder(v);
return pvh;
}
@Override
public void onBindViewHolder(PersonViewHolder personViewHolder, int i) {
personViewHolder.personName.setText(persons.get(i).name);
personViewHolder.personAge.setText(persons.get(i).age);
personViewHolder.personPhoto.setImageResource(persons.get(i).photoId);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public int getItemCount() {
return persons.size();
}
List<Person> persons;
ItemsAdaptor(List<Person> persons){
this.persons = persons;
}
public static class PersonViewHolder extends RecyclerView.ViewHolder {
CardView cv;
TextView personName;
TextView personAge;
ImageView personPhoto;
PersonViewHolder(View itemView) {
super(itemView);
cv = (CardView)itemView.findViewById(R.id.cv);
personName = (TextView)itemView.findViewById(R.id.person_name);
personAge = (TextView)itemView.findViewById(R.id.person_age);
personPhoto = (ImageView)itemView.findViewById(R.id.person_photo);
}
}
}
那么，我们如何才能做到这一点以及我们需要做什么？
这是执行此操作后的日志错误：
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.test/com.test.test.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access0(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)' on a null object reference
at com.test.test.MainActivity.onCreate(MainActivity.java:41)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access0(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
看来，android.support.v7.widget.RecyclerView.setHasFixedSize(boolean)
有什么问题吗？
编辑： MainActivty 布局：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/DrawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="@+id/tool_bar"
layout="@layout/tool_bar">
</include>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/RecyclerView"
android:layout_width="290dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#ffffff"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
并且，items_recycleview:
<?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="match_parent"
android:padding="16dp"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/cv"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_photo"
android:src="@mipmap/ic_launcher"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_name"
android:layout_toRightOf="@+id/person_photo"
android:layout_alignParentTop="true"
android:textSize="30sp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/person_age"
android:layout_toRightOf="@+id/person_photo"
android:layout_below="@+id/person_name"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv"/>
</LinearLayout>
如何修复和执行此操作？
whatsapp 联系人或 Telegram 联系人之类的东西，当您单击一个联系人时，它会向我们显示相同的设计，但是，不同的号码或不同的 picture.and 设计，没有任何变化。
谢谢
由于布局文件中有 3 个 RecyclerView，因此需要创建 3 个 RecyclerView 变量。现在，您将两个 RecyclerView 分配给同一个名为 mRecylcerView 的变量。在创建其他 RecyclerView 变量的地方创建一个新的 RecyclerView 变量并改用它。例如：
RecyclerView recycle3;
RecyclerView.Adapter adapter2;
RecyclerView.LayoutManager rec3lay;