[英]How to add a recycler view to fragment
I have tried many ways to add recyclerview inside a fragment.我尝试了很多方法来在片段中添加 recyclerview。 I'm new for android.我是安卓新手。 My android have 5 fragments one of these fragment I need to add a recyclerview.我的 android 有 5 个片段,其中一个片段我需要添加一个 recyclerview。 here is my code这是我的代码
notification_item.xml通知项.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/notification_item_root"
android:layout_width="match_parent"
android:layout_height="56dp"
android:gravity="center_vertical|left"
android:orientation="horizontal"
android:paddingLeft="16dp">
<de.hdodenhof.circleimageview.CircleImageView
android:id="@+id/notification_item_img"
android:layout_width="36dp"
android:layout_height="36dp"
android:src="@android:drawable/ic_input_get" />
<TextView
android:id="@+id/notification_item_text"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center"
android:paddingLeft="8dp"
android:text="Test Testre" />
</LinearLayout>
notification_Fragment.xml通知_Fragment.xml
<?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:orientation="vertical">
<android.support.v7.app.AlertController.RecycleListView
android:id="@+id/notification_list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
NotificationItem.java通知项.java
public class NotificationItem {
private String title;
private int imageResId;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getImageResId() {
return imageResId;
}
public void setImageResId(int imageResId) {
this.imageResId = imageResId;
}
}
NotificationData.java通知数据.java
public class NotificationData {
private static final String[] textItem = {"pathum", "sai", "charu"};
private static final int[] imgItem = {android.R.drawable.ic_popup_reminder, android.R.drawable.ic_menu_add, android.R.drawable.ic_menu_delete};
public static List<NotificationItem> getListData() {
List<NotificationItem> data = new ArrayList<>();
for (int x = 0; x < 4; x++) {
for (int i = 0; i < textItem.length && i < imgItem.length; i++) {
NotificationItem item = new NotificationItem();
item.setImageResId(imgItem[i]);
item.setTitle(textItem[i]);
data.add(item);
}
}
return data;
}
}
NotificationAdapter.java通知适配器.java
public class NotificationAdapter extends RecyclerView.Adapter<NotificationAdapter.NotificationHolder> {
private List<NotificationItem> listData;
private LayoutInflater inflater;
public NotificationAdapter(List<NotificationItem> listData, Context c) {
this.inflater = LayoutInflater.from(c);
this.listData = listData;
}
@Override
public NotificationHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.notification_item,parent,false);
return new NotificationHolder(view);
}
@Override
public void onBindViewHolder(NotificationHolder holder, int position) {
NotificationItem item = listData.get(position);
holder.title.setText(item.getTitle());
holder.icon.setImageResource(item.getImageResId());
}
@Override
public int getItemCount() {
return listData.size();
}
class NotificationHolder extends RecyclerView.ViewHolder {
private TextView title;
private CircleImageView icon;
private View container;
public NotificationHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.notification_item_text);
icon = (CircleImageView) itemView.findViewById(R.id.notification_item_img);
container = itemView.findViewById(R.id.notification_item_root);
}
}
}
NotificationFragment.java通知片段.java
public class NotificationFragment extends Fragment {
RecyclerView recyclerView;
NotificationAdapter notificationAdapter;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.notification_fragment, container, false);
recyclerView = (RecyclerView) rootView.findViewById(R.id.notification_list);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
notificationAdapter = new NotificationAdapter(NotificationData.getListData(),this);
recyclerView.setAdapter(notificationAdapter);
return rootView;
}
} }
I was unable to make it right in NotificationFragment.java and NotificationAdapter.java please help me guys.我无法在NotificationFragment.java和NotificationAdapter.java 中正确设置,请帮助我。
You are using wrong class for RecyclerView, instead of AlertController.RecyclerListView use this:您为 RecyclerView 使用了错误的类,而不是 AlertController.RecyclerListView 使用这个:
<!-- A RecyclerView with some commonly used attributes -->
<android.support.v7.widget.RecyclerView
android:id="@+id/my_recycler_view"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
Here are some more informations:以下是更多信息:
1) first add dependency to your app level gradle file then sync your project 1) 首先将依赖项添加到您的应用程序级别的 gradle 文件然后同步您的项目
compile 'com.android.support:recyclerview-v7:23.4.0'
2) go to your Layout file (eg: activity_main.xml) add recyclerview tag inside your base layout 2)转到您的布局文件(例如:activity_main.xml)在您的基本布局中添加recyclerview标签
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.examples.rehan.excluzo.Fragments.OneFragment">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
android:id="@+id/recycler_view">
</android.support.v7.widget.RecyclerView>
3) create a class model.java and paste your code. 3)创建一个类model.java并粘贴您的代码。
public class model{ private String name, gender;公共类模型{ 私有字符串名称,性别;
public model() {
}
public model(String name, String gender) {
this.name= name;
this.gender= gender;
}
public String getGender() {
return gender;
}
public void setGender(String gneder) {
this.gender= gender;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name= name;
}
} }
4)create xml file in your layout folder item_layout.xml and paste this code 4)在您的布局文件夹 item_layout.xml 中创建 xml 文件并粘贴此代码
<?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:focusable="true"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="10dp"
android:paddingBottom="10dp" >
<TextView
android:id="@+id/name"
android:textColor="@color/title"
android:textSize="16dp"
android:textStyle="bold"
android:layout_alignParentTop="true"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/gender"
android:layout_below="@id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
5)your need to create adapter to add child views to your listview. 5)您需要创建适配器以将子视图添加到您的列表视图。 so create a file testAdapter.java file and paste this code.所以创建一个文件 testAdapter.java 文件并粘贴此代码。
here in list view i will be having only 2 items(eg : Name and gender)在列表视图中,我将只有 2 个项目(例如:姓名和性别)
public class testAdapter extends RecyclerView.Adapter<testAdapter.MyViewHolder> {
private List<model> productList;
Context context;
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_layout, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
model product = productList.get(position);
holder.name.setText(product.getName());
holder.gender.setText(product.getGender());
}
@Override
public int getItemCount() {
return productList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView name,gender;
public MyViewHolder(View view) {
super(view);
name = (TextView) view.findViewById(R.id.name);
gender = (TextView) view.findViewById(R.id.gender);
}
}
public testAdapter(List<model> productList, Context context) {
this.productList = productList;
this.context = context;
}
}
6) now goto your MainActivity.java and paste this code 6)现在转到您的 MainActivity.java 并粘贴此代码
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private List<modle> movieList = new ArrayList<>();
private RecyclerView recyclerView;
private testAdapter mAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mAdapter = new testAdapter(movieList);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);
preparedata();
}
private void preparedata() {
model movie = new model("XXX", "Male");
movieList.add(movie);
//add the items according to your wish
//name,gender
//here i have added all items with same name and gender. you can change it
model movie = new model("XXX", "Male");
movieList.add(movie);
model movie = new model("XXX", "Male");
movieList.add(movie);
model movie = new model("XXX", "Male");
movieList.add(movie);
model movie = new model("XXX", "Male");
movieList.add(movie);
model movie = new model("XXX", "Male");
movieList.add(movie);
model movie = new model("XXX", "Male");
movieList.add(movie);
mAdapter.notifyDataSetChanged();
}
}
Hope this helps :)希望这可以帮助 :)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.