标签: android-listview

无法弄清楚我的代码有什么问题:

registerForContextMenu(lv_myhitshotlists);
    AdapterContextMenuInfo menuinfo = null;

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
        /*menu.setHeaderTitle("Item Operations");
        menu.add(0, v.getId(), 0, "Edit Film");
        menu.add(0, v.getId(), 0, "Delete Film");*/

        MenuInflater inflater = getMenuInflater();  
        inflater.inflate(R.menu.context_myfilm_list,menu);
        menuinfo = (AdapterContextMenuInfo) menuInfo;
        menu.setHeaderTitle("Options");
    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
    try{
        menuinfo = (AdapterContextMenuInfo) item.getMenuInfo();
        AdapterView.AdapterContextMenuInfo info= (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
        Long ids = madapter.getItemId(info.position);//what item was selected is ListView
         i = ids.intValue();

        switch (item.getItemId()) { 

        case R.id.menu_edit_myfilm:

            intHitshotEdit = new Intent(MyHitshotListActivity.this,MyHitshotInfoEditActivity.class);
            intHitshotEdit.putExtra("video_id", myList.get(i).getid()); …

我需要在列表视图中设置一个偏移量。我最初是使用ScrollBy（X，Y）实现的，但是一旦我触摸列表视图，它就会恢复为零（我的偏移量为负）。

如何保持此偏移量？

有谁知道任何图书馆,如何实现这一点或任何巫术已经为此做出.

带有上下文菜单的列表视图？我不想使用具有长按上下文菜单的那个.

谢谢

我正在尝试创建一个可以支持侧滑动的列表视图.我希望用户能够将listview元素向右拖动,然后在屏幕外面重新调整下面的删除按钮.用户应该能够单击删除按钮从列表视图中删除该元素.我一直关注http://www.youtube.com/watch?v=YCHNAi9kJI4,但只需要帮助将删除按钮添加到后台.有帮助吗？

好的,现在我有一个具有设定高度的ListView.

但是当ListView的某一行内部的内容增长时...行没有

正如您在第二张图片上看到的那样,内容在第一行被截断

当没有足够的空间时,有什么办法可以让单行展开吗？

活动代码:

public class MainActivity extends ActionBarActivity {

ArrayList<Location> arrayOfLocations;
LocationAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_main);

    // Construct the data source
    arrayOfLocations = new ArrayList<Location>();

    // Create the adapter to convert the array to views
    adapter = new LocationAdapter(this, arrayOfLocations);

    adapter.add(new Location(R.drawable.ic_launcher, "Fruit Stand",
            "We have the freshest fruit in the whole world!", "2 miles",
            "8-5 mon-sat\nclosed sun"));

    //getData();

    // Attach the adapter to a ListView
    ListView listView = (ListView) …

我一直看到"应用程序可能在其主线程上做了太多工作."

这是由我下面的代码中的swapCursor()引起的吗？看起来如此:如果我删除它,上面的警告就会消失.

我仍然不明白为什么它声称是导致问题的主要线程.我已经将swapCursor()移动到各种位置,例如onLoadFinished()和loadInBackground(),但我得到了相同的结果.

如何调用swapCursor()以便不显示此警告？我使用SimpleCursorLoader的全部原因是避免占用主线程,但它仍在发生.

package com.example.sqlitetest;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.support.v4.content.CursorLoader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter.ViewBinder;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor> 
{
  public static Context mContext;

  private LoaderManager.LoaderCallbacks<Cursor> mLoaderCallbacks;

  public static SQLiteDatabase      db;
  public …

尝试了很多方法并阅读了大量的文字,但我仍然无法理解如何解决我的问题.我们的想法是,HashMap中填充了一个"for"循环,其中包含来自数据库的数据.此外,此参数(HashMap)传递给listViewContent然后创建适配器并最终填充listView.事实是listView中的每一行都有2个textView和1个imageView,我需要从这个listView的第二个textView获取文本,数据存储在数据库中.

这是我的代码块:HashMap块

if (posts != null) {
    for (WallPostItem post : posts) {
        //create new map for a post
        Map<String, Object> map = new HashMap<String, Object>();
        map.put(ATTRIBUTE_NAME_TEXT, post.text);
        PictureItem postPicture = new PictureItem();
        map.put(ATTRIBUTE_NAME_IMAGE, postPicture);
        map.put(ATTRIBUTE_NAME_DATE, post.date);



        if ((post.pictures != null) && (post.pictures.size() != 0)) {
            //start downloading of pictures

            String pictureLink = post.pictures.get(0);

            if (dbHandler.hasPicture(pictureLink)) {
                Bitmap image = dbHandler.getPicture(pictureLink);
                int width = image.getWidth();
                int height = image.getHeight();
                if (width>800 || height>800){
                 int threeWidth = width / 2;
                 int …

我正在解析XML并尝试在列表视图中传播它.

我正在使用以下代码

主要活动,

public class MainActivity extends ListActivity {

ArrayList<String> xmlList=new ArrayList<String>();
ArrayList<String> xmlList1=new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    try{
        InputStream is=getResources().openRawResource(R.raw.sample);

        DocumentBuilder builder=DocumentBuilderFactory.newInstance().newDocumentBuilder();
        Document doc=builder.parse(is, null);

        NodeList nodes=doc.getElementsByTagName("id");
        NodeList nodes1=doc.getElementsByTagName("Name");

        if(nodes!=null && nodes.getLength() >0)
        {
            xmlList.clear();
            xmlList1.clear(); 
            int len=nodes.getLength();

            for(int i=0;i<len;i++)
            {
                Node node=nodes.item(i);
                Node node1=nodes1.item(i);
                xmlList.add(node.getTextContent());
            }
        }
        }
        catch(Exception e)
        {
            Toast.makeText(getApplicationContext(), ""+e.toString(), Toast.LENGTH_LONG).show();
            e.printStackTrace();
        }

    CustomList adapter=new CustomList(MainActivity.this,xmlList,xmlList1);
    setListAdapter(adapter);

CustomList.java

public class CustomList extends ArrayAdapter<String> {

Context context;
private final ArrayList<String> mainText;
private …

我希望你能帮助我.我是Android开发的新手,我已经尝试过对此进行研究,但我没有运气.我希望你能解决我的简单问题.

如何在片段上使用setListAdapter？我的活动扩展了片段,我无法将其转换为listfragment,因为我在其中一个片段选项卡中显示它.

public class AccountFragment extends Fragment implements OnItemClickListener {
private LoginDataBaseAdapter loginDataBaseAdapter;

private RemindersDbAdapter mDbHelper;

ListView listv;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

         mDbHelper = new RemindersDbAdapter(getActivity());
         mDbHelper.open();
         fillData();

     //registerForContextMenu(getListView());----- Not working too :(

      //intialize variables


        View rootView = inflater.inflate(R.layout.fragment_account, container, false);




            registerForContextMenu(getView());
            listv = (ListView) rootView.findViewById(R.id.remlist);







        return rootView;


         }

    @Override
    public void onActivityResult( int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        fillData();


    }

    private void fillData() {
        Cursor remindersCursor = mDbHelper.fetchAllReminders();
        getActivity().startManagingCursor(remindersCursor); …

我正在制作GroceryList应用程序.我想在单击ListView项目的复选框时将Strikethrough实现到TextView.

当我点击复选框时,该项应该被检查为删除线.

请提供一些示例代码以在Listview中实现Strikethrough.

提前致谢.