所以我在使用适配器时遇到了一些问题。我不确定是什么问题。我收到的错误是
06-2619:44:59.228:E/AndroidRuntime(7275):android.content.res.Resources$NotFoundException: Resource ID #0x0
现在我要在这里发布我的所有代码。有一点，所以我会指出我认为问题所在。我只是不知道如何解决它。
MainActivity.java
public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;
Context mContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mPlanetTitles = getResources().getStringArray(R.array.planets_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);(PROBLEM LIES HERE)
// We pass our newly generated list to the adapter
ArrayList<String> tempTiles = new ArrayList<String>();
for(int i = 0; i < mPlanetTitles.length; i++ ){
tempTiles.add(mPlanetTitles[i]); (PROBLEM LIES HERE)
}
SideMenuAdapter adapter = new SideMenuAdapter(this, R.layout.drawer_list_item, tempTiles);
mDrawerList.setAdapter(adapter);
// set up the drawer's list view with items and click listener
// mDrawerList.setAdapter(new ArrayAdapter<String>(this,
// R.layout.drawer_list_item, mPlanetTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
/* Called whenever we call invalidateOptionsMenu() */
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action buttons
switch(item.getItemId()) {
case R.id.action_websearch:
// create intent to perform web search for this planet
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
// catch event that there's no activity to handle intent
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
SideMenuAdapter.java
package com.example.android.navigationdrawerexample;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class SideMenuAdapter extends ArrayAdapter<String> {
private Context context;
private int rowViewResourceId;
//private List<SideMenuListItem> sideMenuItemsList = new ArrayList<SideMenuListItem>();
//private ImageView SideMenuItemIcon;
private TextView sideMenuItemName;
private List<String> objects;
private int textViewResourceId;
public SideMenuAdapter(Context context, int textViewResourceId, List<String> objects){
super(context, textViewResourceId, objects);
this.textViewResourceId = textViewResourceId;
this.context = context;
this.objects= objects;
}
public int getCount(){
return this.objects.size();
}
public String getItem(int index) {
return this.objects.get(index);
}
public View getView(int position, View convertView, ViewGroup parent){
View row = convertView; (PROBLEM LIES HERE)
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(rowViewResourceId, parent,
false);
}
String sideMenuListItem = getItem(position);
//thinking about making a boolean to say if it's a title then do this.
if(position == 0){
//set the text to the xml format
sideMenuItemName = (TextView) row.findViewById(R.id.list_header_title);
sideMenuItemName.setText(sideMenuListItem);
//need to make the text gone so it doesn't take up space
//this lets us put the title where we want it
TextView setT = (TextView) row.findViewById(R.id.text1);
setT.setVisibility(View.GONE);
//need to make row icon gone so it doesn't take up space
//this lets us put the icon where we want it
//ImageView setTV = (ImageView) row.findViewById(R.id.row_icon);
//setTV.setVisibility(View.GONE);
//setting the color for the divider
View divider= (View) row.findViewById(R.id.customdivider);
divider.setBackgroundColor(0xFFFF0000);
}
else{
//lets find our items that we want the list to be populated
sideMenuItemName = (TextView) row.findViewById(R.id.list_header_title);
//need to make the title gone so it doesn't take up space
//this lets us put the title where we want it
TextView setTV = (TextView) row.findViewById(R.id.list_header_title);
setTV.setVisibility(View.GONE);
//set the text
sideMenuItemName.setText(sideMenuListItem);
//
// int imageResource = context.getResources().getIdentifier(
// slidingMenuListItem.IconResourceId, null,
// context.getPackageName());
//
// //set the image
// slidingMenuItemIcon.setImageResource(imageResource);
//setting the color for the divider
View divider= (View) row.findViewById(R.id.customdivider);
divider.setBackgroundColor(0xFFFFFF00);
}
return row;
}
}
XML文件
activity_main.xml中
drawer_list_item.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?android:attr/activatedBackgroundIndicator"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:textColor="#fff" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/list_header_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:padding="10dp" />
</LinearLayout>
<View
android:id="@+id/customdivider"
android:layout_width="fill_parent"
android:layout_height="1dp" />
</LinearLayout>
fragment_planet.xml
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000"
android:gravity="center"
android:padding="32dp" />
请帮忙！
答案 0 :(得分：1)
您已在适配器上定义了这些变量
private int rowViewResourceId;
private int textViewResourceId;
在您的构造函数中，您没有分配rowViewResourceId，而是textViewResourceId
public SideMenuAdapter(Context context, int textViewResourceId, List<String> objects)
{
super(context, textViewResourceId, objects);
this.textViewResourceId = textViewResourceId;
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
this.context = context;
this.objects= objects;
}
在getView()方面，您使用的是尚未分配的rowViewResourceId，可能会在声明中指定一个值。
public View getView(int position, View convertView, ViewGroup parent){
View row = convertView; (PROBLEM LIES HERE)
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(rowViewResourceId, parent,
false);
}
// ......
}
这就是您收到资源错误的原因。