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我有一個自定義列表視圖，我成功地將數據解析到列表中，但是當我嘗試使用onclick應用程序崩潰時，幫助？自定義ListView OnClick解析
主要活動
public class CustomizedListView extends Activity {
// All static variables
static final String URL = "http://dl.dropbox.com/u/48258247/music.xml";
// XML node keys
static final String KEY_SONG = "song"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "title";
static final String KEY_ARTIST = "artist";
static final String KEY_DURATION = "duration";
static final String KEY_THUMB_URL = "thumb_url";
ListView list;
LazyAdapter adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.library);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
list=(ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(this, songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String song = ((TextView) view.findViewById(R.id.title)).getText().toString();
String artist = ((TextView) view.findViewById(R.id.artist)).getText().toString();
String thumb_url = ((TextView) view.findViewById(R.id.duration)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItem.class);
in.putExtra(KEY_SONG, song);
in.putExtra(KEY_ARTIST, artist);
in.putExtra(KEY_THUMB_URL, thumb_url);
startActivity(in);
}
});
}
}
SingleMenuItemActivity
package com.example.androidhive;
import org.scouts.android.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class SingleMenuItem extends Activity {
// XML node keys
static final String KEY_SONG = "song";
static final String KEY_ARTIST = "artist";
static final String KEY_THUMB_URL = "thumb_url";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.libraryonclick);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String song = in.getStringExtra(KEY_SONG);
String artist = in.getStringExtra(KEY_ARTIST);
String thumb_url = in.getStringExtra(KEY_THUMB_URL);
// Displaying all values on the screen
TextView lblSong = (TextView) findViewById(R.id.textView1);
TextView lblArtist = (TextView) findViewById(R.id.textView2);
TextView lblThumb_Url = (TextView) findViewById(R.id.textView3);
lblSong.setText(song);
lblArtist.setText(artist);
lblThumb_Url.setText(thumb_url);
}
}
這裏是logcat的
的logcat：
-21 17:16:30.812: D/AndroidRuntime(281): Shutting down VM
06-21 17:16:30.812: W/dalvikvm(281): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
06-21 17:16:30.862: E/AndroidRuntime(281): FATAL EXCEPTION: main
06-21 17:16:30.862: E/AndroidRuntime(281): android.content.ActivityNotFoundException: Unable to find explicit activity class {org.scouts.android/com.example.androidhive.SingleMenuItem}; have you declared this activity in your AndroidManifest.xml?
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.Activity.startActivityFromChild(Activity.java:3057)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.Activity.startActivityForResult(Activity.java:2837)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.Activity.startActivity(Activity.java:2923)
06-21 17:16:30.862: E/AndroidRuntime(281): at com.example.androidhive.CustomizedListView$1.onItemClick(CustomizedListView.java:88)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.widget.AdapterView.performItemClick(AdapterView.java:284)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.widget.ListView.performItemClick(ListView.java:3382)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.os.Handler.handleCallback(Handler.java:587)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.os.Handler.dispatchMessage(Handler.java:92)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.os.Looper.loop(Looper.java:123)
06-21 17:16:30.862: E/AndroidRuntime(281): at android.app.ActivityThread.main(ActivityThread.java:4627)
06-21 17:16:30.862: E/AndroidRuntime(281): at java.lang.reflect.Method.invokeNative(Native Method)
06-21 17:16:30.862: E/AndroidRuntime(281): at java.lang.reflect.Method.invoke(Method.java:521)
06-21 17:16:30.862: E/AndroidRuntime(281): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-21 17:16:30.862: E/AndroidRuntime(281): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-21 17:16:30.862: E/AndroidRuntime(281): at dalvik.system.NativeStart.main(Native Method)
三江源幫助:)
發佈您的logcat – Praveenkumar
我該怎麼做？ – SquiresSquire
寧願CustomizedListView.this而不是getApplicationContext（） –