我正在尝试在我的Android应用程序中创建一个列表视图。但是我在运行项目时遇到资源未找到异常。
activity_main.xml:
<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"
tools:context=".MainActivity" >
<include
android:id="@+id/title_bar"
layout="@layout/title_bar" />
<ListView
android:id="@+id/FeedList"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/title_bar"
></ListView>
</RelativeLayout>
list_item.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:background="#FFFFFF">
<ImageButton
android:id="@+id/FeedType"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#E0E0E0"
android:padding="9dp"
android:src="@drawable/ic_launcher" />
<TextView
android:id="@+id/FeedTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Feed Title"
android:textSize="18sp"
android:layout_toRightOf="@+id/FeedType"
android:paddingLeft="5dp"
android:textColor="#000000"
/>
<TextView
android:id="@+id/FeedPostedBy"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/FeedTitle"
android:text="by FeedOwner"
android:layout_toRightOf="@+id/FeedType"
android:paddingLeft="5dp"
android:textSize="10sp"
/>
<TextView
android:id="@+id/FeedContent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/FeedPostedBy"
android:layout_toRightOf="@+id/FeedType"
android:paddingLeft="5dp"
android:paddingTop="8dp"
android:text="The content posted as a feed by the feed owner will appear here"
android:textSize="10sp"/>
</RelativeLayout>
ListAdapter类:
package com.tcs.internal.prime;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.TextView;
public class ListAdapter extends BaseAdapter{
private Activity listAdapterActivity = null;
private ArrayList<HashMap<String,String>> data;
private static LayoutInflater inflater;
public ListAdapter(Activity ListActivity,ArrayList<HashMap<String, String>> listData)
{
listAdapterActivity = ListActivity;
data = listData;
inflater = (LayoutInflater)listAdapterActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View listItem = convertView;
if(listItem == null)
listItem = inflater.inflate(R.id.FeedList, null);
ImageButton feedIcon = (ImageButton) listItem.findViewById(R.id.FeedType);
TextView feedTitle = (TextView) listItem.findViewById(R.id.FeedTitle);
TextView feedOwner = (TextView) listItem.findViewById(R.id.FeedPostedBy);
TextView feedContent = (TextView) listItem.findViewById(R.id.FeedContent);
HashMap<String, String> feedData = new HashMap<String, String>();
feedData = data.get(position);
feedIcon.setImageResource(R.drawable.ic_launcher);
feedTitle.setText(feedData.get("FeedTitle"));
feedOwner.setText(feedData.get("FeedOwner"));
feedContent.setText(feedData.get("FeedContent"));
return listItem;
}
}
MainActivity类:
package com.tcs.internal.prime;
import java.util.ArrayList;
import java.util.HashMap;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ListView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String, String>> feedList = new ArrayList<HashMap<String,String>>();
HashMap<String, String> data = new HashMap<String, String>();
data.put("FeedTitle","Application crashed when launched in Windows 7");
data.put("FeedOwner", "By Venkatramanan");
data.put("FeedContent","Launch the financial aid adminstration in windows 7 environment");
feedList.add(data);
data.clear();
data.put("FeedTitle","Application crashed when launched in Windows 8 ");
data.put("FeedOwner", "By Siva Guru");
data.put("FeedContent","Launch the financial aid adminstration in windows 8 environment");
feedList.add(data);
ListView feedListView = (ListView)findViewById(R.id.FeedList);
ListAdapter listAdapter = new ListAdapter(this, feedList);
feedListView.setAdapter(listAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
我得到以下异常:
android.content.res.Resources $ NotFoundException:资源ID#0x7f070001类型#0x12无效
答案 0 :(得分:10)
您必须在listview适配器getview方法中将自定义布局充气为
listItem = inflater.inflate(R.layout.list_item, null);
而不是
listItem = inflater.inflate(R.id.FeedList, null);