我使用了自定义 ListView 并使用该 ListView 显示了一些数据。当我单击列表视图项时，onLongClickListener 没有触发。我无法选择任何列表项。
视图.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="@+id/jokeTextView"
android:text="This is a really long sample joke that should be ellipsisized in collapsed mode and show the complete text in the expanded mode."
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/dark"
android:paddingTop="10dip"
android:paddingBottom="10dip"
android:paddingLeft="20dip"
android:paddingRight="50dip"
android:layout_alignParentRight="true"
android:focusable="false"
android:focusableInTouchMode="false"
>
</TextView>
<RadioGroup
android:id="@+id/ratingRadioGroup"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:orientation="vertical"
android:layout_alignParentRight="true"
>
<RadioButton
android:id="@+id/likeButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/like"
android:button="@null"
android:focusable="false"
android:focusableInTouchMode="false"
/>
<RadioButton
android:id="@+id/dislikeButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/dislike"
android:button="@null"
android:focusable="false"
android:focusableInTouchMode="false"
/>
</RadioGroup>
</RelativeLayout>
</RelativeLayout>
活动课：
package edu.calpoly.android.lab3;
import java.util.ArrayList;
import com.actionbarsherlock.app.SherlockActivity;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.ActionMode;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;
import edu.calpoly.android.lab3.Joke;
import edu.calpoly.android.lab3.R;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup.LayoutParams;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;
public class AdvancedJokeList extends SherlockActivity {
private static final String TAG = "MyActivity";
/** Contains the name of the Author for the jokes. */
protected String m_strAuthorName;
/** Contains the list of Jokes the Activity will present to the user. */
protected ArrayList<Joke> m_arrJokeList;
/** Contains the list of filtered Jokes the Activity will present to the user. */
protected ArrayList<Joke> m_arrFilteredJokeList;
/** Adapter used to bind an AdapterView to List of Jokes. */
protected JokeListAdapter m_jokeAdapter;
/** ViewGroup used for maintaining a list of Views that each display Jokes. */
protected ListView m_vwJokeLayout;
/** EditText used for entering text for a new Joke to be added to m_arrJokeList. */
protected EditText m_vwJokeEditText;
protected ActionMode mActionMode=null;
/** Button used for creating and adding a new Joke to m_arrJokeList using the
* text entered in m_vwJokeEditText. */
protected Button m_vwJokeButton;
//protected TextView m_vwJokeTextView;
/** Menu used for filtering Jokes. */
protected Menu m_vwMenu;
/** Background Color values used for alternating between light and dark rows
* of Jokes. Add a third for text color if necessary. */
protected int m_nDarkColor;
protected int m_nLightColor;
protected int m_nTextColor;
/**
* Context-Menu MenuItem IDs.
* IMPORTANT: You must use these when creating your MenuItems or the tests
* used to grade your submission will fail. These are commented out for now.
*/
//protected static final int FILTER = Menu.FIRST;
//protected static final int FILTER_LIKE = SubMenu.FIRST;
//protected static final int FILTER_DISLIKE = SubMenu.FIRST + 1;
//protected static final int FILTER_UNRATED = SubMenu.FIRST + 2;
//protected static final int FILTER_SHOW_ALL = SubMenu.FIRST + 3;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initLayout();
Resources res = this.getResources();
m_arrJokeList = new ArrayList<Joke>();
m_jokeAdapter = new JokeListAdapter(getApplicationContext(), m_arrJokeList);
m_vwJokeLayout.setAdapter(m_jokeAdapter);
String author = res.getString(R.string.author_name);
String[] jokeString = res.getStringArray(R.array.jokeList);
for (int i=0; i<jokeString.length; i++) {
addJoke(new Joke(jokeString[i],author));
}
initAddJokeListeners();
//m_vwJokeLayout.setLongClickable(true);
//m_vwJokeLayout.setFocusable(false);
m_vwJokeLayout.setOnLongClickListener(new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
Toast.makeText(AdvancedJokeList.this, "long click", Toast.LENGTH_LONG).show();
if (mActionMode != null)
{
return false;
}
else
{
mActionMode = AdvancedJokeList.this.startActionMode(mActionModeCallback);
v.setSelected(true);
return true;
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater mi = getSupportMenuInflater();
mi.inflate(R.menu.mainmenu, menu);
m_vwMenu = menu;
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem Item) {
m_arrFilteredJokeList = new ArrayList<Joke>();
m_arrFilteredJokeList.clear();
switch (Item.getItemId())
{
case R.id.menu_filter :
//Toast.makeText(this, "Filter Jokes", Toast.LENGTH_LONG).show();
break;
case R.id.submenu_like :
for (Joke i : m_arrJokeList) {
if (i.getRating()==1)
m_arrFilteredJokeList.add(i);
}
m_jokeAdapter = new JokeListAdapter(getApplicationContext(), m_arrFilteredJokeList);
break;
case R.id.submenu_dislike :
for (Joke i : m_arrJokeList) {
if (i.getRating()==2)
m_arrFilteredJokeList.add(i);
}
m_jokeAdapter = new JokeListAdapter(getApplicationContext(), m_arrFilteredJokeList);
//m_jokeAdapter.notifyDataSetChanged();
break;
case R.id.submenu_unrated :
for (Joke i : m_arrJokeList) {
if (i.getRating()==0)
m_arrFilteredJokeList.add(i);
}
m_jokeAdapter = new JokeListAdapter(getApplicationContext(), m_arrFilteredJokeList);
break;
case R.id.submenu_show_all :
m_jokeAdapter = new JokeListAdapter(getApplicationContext(), m_arrJokeList);
break;
}
m_jokeAdapter.notifyDataSetChanged();
m_vwJokeLayout.setAdapter(m_jokeAdapter);
return true;
}
private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
mActionMode = null;
}
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
MenuInflater mi = mode.getMenuInflater();
mi.inflate(R.menu.actionmenu, menu);
return true;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId())
{
case R.id.menu_remove :
}
return false;
}
};
/**
* Method is used to encapsulate the code that initializes and sets the
* Layout for this Activity.
* @param v_mwJokeLayout
*/
protected void initLayout() {
setContentView(R.layout.advanced);
m_vwJokeLayout = (ListView) findViewById(R.id.jokeListViewGroup);
m_vwJokeEditText = (EditText) findViewById(R.id.newJokeEditText);
m_vwJokeButton = (Button) findViewById(R.id.addJokeButton);
}
/**
* Method is used to encapsulate the code that initializes and sets the
* Event Listeners which will respond to requests to "Add" a new Joke to the
* list.
*/
protected void initAddJokeListeners() {
m_vwJokeButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String textInput = m_vwJokeEditText.getText().toString();
m_vwJokeEditText.setText("");
addJoke(new Joke(textInput,""));
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(m_vwJokeEditText.getWindowToken(), 0);
}
});
}
/**
* Method used for encapsulating the logic necessary to properly add a new
* Joke to m_arrJokeList, and display it on screen.
*
* @param joke
* The Joke to add to list of Jokes.
*/
protected void addJoke(Joke joke) {
//Joke joke = new Joke(strJoke);
m_arrJokeList.add(joke);
m_jokeAdapter.notifyDataSetChanged();
Log.d(TAG, "Adding new joke:" + joke.getJoke());
//setContentView(m_vwJokeLayout);
}
}