我使用android recyclerview来扩充三个布局，如我的代码所示，但页脚没有正确充气，因此隐藏了listview布局的一些数据。我的代码存在问题，因为我希望listview布局显示为recyclerview适配器中的最后一个布局。
package com.news254.inception.newsapp;
import android.content.Intent;
import android.content.res.Configuration;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
public class Newspaper extends AppCompatActivity {
Toolbar mtoolbar;
String TITLES[] = {"Newspaper","Gossip","Entertainment","Sports","International","About","Exit"};
int ICONS[] = {R.drawable.newspaper,R.drawable.gossip,R.drawable.entertainment,R.drawable.sports,R.drawable.international,R.drawable.about,R.drawable.exit};
//Similarly we Create a String Resource for the name and email in the header
view
//And we also create a int resource for profile picture in the header view
Boolean isDrawerOpen =true;
private Toolbar toolbar; // Declaring the
Toolbar Object
RecyclerView mRecyclerView; // Declaring
RecyclerView
RecyclerView.Adapter mAdapter; // Declaring Adapter
For Recycler View
RecyclerView.LayoutManager mLayoutManager; // Declaring Layout
Manager as a linear layout manager
DrawerLayout Drawer; // Declaring
DrawerLayout
ActionBarDrawerToggle mDrawerToggle;
ImageView
Nation,Standard,Capital,Nairobian,BusinessDaily,EastAfrican,Star,Mwakilishi,Citizen;
String nation = "http://www.nation.co.ke";
String standard = "http://www.standardmedia.co.ke";
String star = "http://www.the-star.co.ke";
String nairobian = "http://www.sde.co.ke/m/thenairobian";
String eastafrican = "http://www.theeastafrican.co.ke";
String businessdaily = "http://www.businessdailyafrica.com";
String mwakilishi = "http://www.mwakilishi.com";
String capital = "http://www.capitalfm.co.ke";
String citizen = "http://www.theweeklycitizen.co.ke";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_news);
mtoolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mtoolbar);
mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView); // Assigning the RecyclerView Object to the xml View
mRecyclerView.setHasFixedSize(true); // Letting the system know that the list objects are of fixed size
mAdapter = new MyAdapter(TITLES,ICONS); // Creating the Adapter of MyAdapter class(which we are going to see in a bit)
// And passing the titles,icons,header view name, header view email,
// and header view profile picture
mRecyclerView.setAdapter(mAdapter); // Setting the adapter to RecyclerView
mLayoutManager = new LinearLayoutManager(this); // Creating a layout Manager
mRecyclerView.setLayoutManager(mLayoutManager); // Setting the layout Manager
Nation = (ImageView) findViewById(R.id.nation);
Nation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",nation);
startActivity(p);
}
});
Standard = (ImageView) findViewById(R.id.standard);
Standard.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",standard);
startActivity(p);
}
});
Star = (ImageView) findViewById(R.id.star);
Star.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Entertainment.class);
p.putExtra("site",star);
startActivity(p);
}
});
Capital = (ImageView) findViewById(R.id.capital);
Capital.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",capital);
startActivity(p);
}
});
Nairobian = (ImageView) findViewById(R.id.nairobian);
Nairobian.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",nairobian);
startActivity(p);
}
});
Citizen = (ImageView) findViewById(R.id.citizen);
Citizen.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",citizen);
startActivity(p);
}
});
EastAfrican = (ImageView) findViewById(R.id.eastafrican);
EastAfrican.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",eastafrican);
startActivity(p);
}
});
BusinessDaily = (ImageView) findViewById(R.id.businessdaily);
BusinessDaily.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",businessdaily);
startActivity(p);
}
});
Mwakilishi = (ImageView) findViewById(R.id.mwakilishi);
Mwakilishi.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent p = new Intent(Newspaper.this,Browser.class);
p.putExtra("site",mwakilishi);
startActivity(p);
}
});
Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout); // Drawer object Assigned to the view
mDrawerToggle = new ActionBarDrawerToggle(this,Drawer,toolbar,R.string.drawer_open,R.string.drawer_close){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
// code here will execute once the drawer is opened( As I dont want anything happened whe drawer is
// open I am not going to put anything here)
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
// Code here will execute once drawer is closed
}
/* @Override
public void onDrawerSlide(View drawerView, float slideOffset) {
if(slideOffset >.55 && !isDrawerOpen)
{
onDrawerOpened(drawerView);
isDrawerOpen=true;
}
else if (slideOffset <.45 && isDrawerOpen)
{
onDrawerClosed(drawerView);
isDrawerOpen = false;
}
// super.onDrawerSlide(drawerView, slideOffset);
}*/
}; // Drawer Toggle Object Made
Drawer.setDrawerListener(mDrawerToggle);
// / Drawer Listener set to the Drawer toggle
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mDrawerToggle.setDrawerIndicatorEnabled(true);
}
@Override
public void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_news, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if(mDrawerToggle.onOptionsItemSelected(item))
{
return true;
}
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
} }
package com.news254.inception.newsapp;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
/**
* Created by hp1 on 28-12-2014.
*/
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private static final int TYPE_FOOTER = 2; // Declaring Variable to
Understand which View is being worked on
// IF the view under inflation and population is header or Item
private static final int TYPE_ITEM = 1;
private static final int TYPE_HEADER= 0;
private String mNavTitles[]; // String Array to store the passed titles
Value from MainActivity.java
private int mIcons[]; // Int Array to store the passed icons
resource value from MainActivity.java
private int mfooter[];
private String mtitleFoot[];
int Holderid;
// Creating a ViewHolder which extends the RecyclerView View Holder
// ViewHolder are used to to store the inflated views in order to
recycle them
public static class ViewHolder extends RecyclerView.ViewHolder {
int Holderid;
TextView textView;
ImageView imageView;
ImageView about;
TextView name;
public ViewHolder(View itemView,int ViewType) { // Creating ViewHolder Constructor with View and viewType As a parameter
super(itemView);
// Here we set the appropriate view in accordance with the the view type as passed when the holder object is created
if(ViewType == TYPE_ITEM) {
textView = (TextView) itemView.findViewById(R.id.rowText); // Creating TextView object with the id of textView from item_row.xml
imageView = (ImageView) itemView.findViewById(R.id.rowIcon);// Creating ImageView object with the id of ImageView from item_row.xml
Holderid = 1; // setting holder id as 1 as the object being populated are of type item row
}
else if(ViewType == TYPE_FOOTER){
about = (ImageView) itemView.findViewById(R.id.image); // Creating Text View object from header.xml for name
name = (TextView) itemView.findViewById(R.id.text); // Creating Text View object from header.xml for email
// Creating Image view object from header.xml for profile pic
Holderid =2; // Setting holder id = 0 as the object being populated are of type header view
}
else if(ViewType == TYPE_HEADER)
{
Holderid =0;
}
}
}
MyAdapter(String Titles[],int Icons[]){ // MyAdapter Constructor
with titles and icons parameter
// titles, icons, name, email, profile pic are passed from the
main activity as we
mNavTitles = Titles; //have seen earlier
mIcons = Icons;
//here we assign those passed values to the values
we declared here
//in adapter
}
//Below first we ovverride the method onCreateViewHolder which is called when
the ViewHolder is
//Created, In this method we inflate the item_row.xml layout if the
viewType is Type_ITEM or else we inflate header.xml
// if the viewType is TYPE_HEADER
// and pass it to the view holder
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int
viewType) {
if (viewType == TYPE_ITEM) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.listview,parent,false); //Inflating the layout
ViewHolder vhItem = new ViewHolder(v,viewType); //Creating ViewHolder and passing the object of type view
return vhItem; // Returning the created object
//inflate your layout and pass it to view holder
}
else if (viewType == TYPE_HEADER) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.header, parent, false); //Inflating the layout
ViewHolder vhHeader = new ViewHolder(v, viewType); //Creating ViewHolder and passing the object of type view
return vhHeader; //returning the object created
}
else if (viewType == TYPE_FOOTER) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.footer, parent, false); //Inflating the layout
ViewHolder vhHeader = new ViewHolder(v, viewType); //Creating ViewHolder and passing the object of type view
return vhHeader; //returning the object created
}
return null;
}
//Next we override a method which is called when the item in a row is
needed to be displayed, here the int position
// Tells us item at which position is being constructed to be displayed
and the holder id of the holder object tell us
// which view type is being created 1 for item row
@Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, int
position) {
if(holder.Holderid ==1) { // as the list view is going to be called after the header view so we decrement the
// position by 1 and pass it to the holder while setting the text and image
holder.textView.setText(mNavTitles[position-2]); // Setting the Text with the array of our Titles
holder.imageView.setImageResource(mIcons[position-2]);// Settimg the image with array of our icons
}
else if (holder.Holderid ==2){
holder.about.setImageResource(mIcons[position]); // Similarly we set the resources for header view
holder.name.setText(mNavTitles[position]);
}
else if (holder.Holderid ==0){
}
}
// This method returns the number of items present in the list
@Override
public int getItemCount() {
return mNavTitles.length+2;
// the number of items in the list will be +1 the titles including the header view.
}
// Witht the following method we check what type of view is being passed
@Override
public int getItemViewType(int position) {
if (position == 0) {
return TYPE_HEADER;
}
else if (position ==2) {
return TYPE_FOOTER ;
}
else {
return TYPE_ITEM;
}
}
private boolean isPositionHeader(int position) {
return position == 0;
}
}
答案 0 :(得分：0)
更改此
@Override
public int getItemViewType(int position) {
if (position == 0) {
return TYPE_HEADER;
}
else if (position ==2) {
return TYPE_FOOTER ;
}
else {
return TYPE_ITEM;
}
}
要
@Override
public int getItemViewType(int position) {
if(position==0){
return TYPE_HEADER;
}
else if((mNavTitles.length+ 1) == position){
return TYPE_FOOTER;
}else{
return TYPE_ITEM;
}
}