Question

为我的公司做一些R＆amp; D。我们正在尝试使用包含imageview的listView，以及listview中每个条目的两个编辑框。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="horizontal"
  android:isScrollContainer="true"
  android:focusableInTouchMode="false"
  android:focusable="false">
  <ImageView android:id="@+id/imgView"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:maxWidth="100dp"
  android:maxHeight="100dp"/>
  <LinearLayout 
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:orientation="vertical">
    <EditText android:id="@+id/img_title"
    android:hint="Title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:minWidth="150dp"/>
    <EditText android:id="@+id/img_desc"
    android:hint="Description"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:minWidth="150dp"/>
  </LinearLayout>
</LinearLayout>

这是我试图用于列表视图中的项目的布局文件。在我们的ImageAdapter的getView中（扩展了ArrayAdapter），我试图使用LayoutInflater来膨胀xml，然后我将其存储到ViewGroup中。我发现ViewByID（）来获取xml中的imageView，并设置我们想要的imageView的属性。

如果我们继续膨胀这个xml文件，那么所有的id都是相同的。这是我们的问题。

如果我们删除带有的列表项上下文菜单，它实际上删除不正确的。测试显示它主要是最后添加的，但并非总是如此。
EditText不响应键盘输入。有时，他们会存储一些数据，通常总是“bbb”。

我们有更多问题，但我们会在修复这些更严重的错误后回复。

public View getView(int position, View convertView, ViewGroup parent)
    {
        final ImageView imageView;
        //InputStream is = null;
        final Context mContext = super.getContext();
        final AdapterItem item = super.getItem(position);
        final Uri imageUri = item.getUri();
        ViewGroup viewGroup = null;

        try
        {
            //-- If the view has not been created yet.
            if (convertView == null)
            {
                /*
                 * Build the ImageView from the URI with some custom
                 * view settings.
                 */

                viewGroup = (ViewGroup) LayoutInflater.from(mContext).inflate(R.layout.mediauploadobject, null);
                imageView = (ImageView) viewGroup.findViewById(R.id.imgView);
                //imageView.setLayoutParams(new GridView.LayoutParams(IMAGE_WIDTH, IMAGE_HEIGHT));
                imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
                imageView.setPadding(IMAGE_PADDING_LEFT, IMAGE_PADDING_TOP,
                        IMAGE_PADDING_RIGHT, IMAGE_PADDING_BOTTOM);
                imageView.setDrawingCacheEnabled(true);
                imageView.setClickable(true);
                imageView.setFocusable(true);
                imageView.setFocusableInTouchMode(true);
                imageView.setSaveEnabled(false);
                //the following two lines are required for the menu to popUp
                imageView.setOnLongClickListener(new LongClickListener());
                imageView.setOnCreateContextMenuListener(new LongClickMenu());
                imageView.setOnClickListener(new ShortClickListener());

                //the following two lines are required to put a boarder around the images
                imageView.setOnTouchListener(new PictureOnTouchListener());
                imageView.setOnFocusChangeListener(new PictureOnFocusChangeListener());

                //-- Keep a reference to the ImageView by tagging it.
                imageView.setTag(imageUri);
            }else
            {
                //-- R-E-C-Y-C-L-E recycle!
                viewGroup = (ViewGroup) convertView;
                imageView = (ImageView) viewGroup.findViewById(R.id.imgView);
            }

            //-- Lazy load the images so the user doesn't have to wait for all of the querying non-sense
            //   that happens behind the scenes.
            imageView.setImageResource(android.R.drawable.gallery_thumb);
            imageView.post(new ImageLoader(imageUri, imageView));           

            //-- Be VERY careful when changing this code. Due to heap size issues,
            //   the size of the bitmap image MUST be modified with the
            //   provided BitmapFactory.Options or the program will
            //   crash often and frequent.
            //post
            //-- AJG 7/1/2010 added this assignment so we aren't always setting these preferences every
            //   iteration
            convertView = viewGroup;
        }catch(Throwable t)
        {
            Log.e(TAG, t.toString());
            return null;            
        }finally
        {
            //try{if(is != null)is.close();}catch(Exception squish){}
        }

        return viewGroup;
    }

Answer 1

默认情况下，子视图无法在列表视图中聚焦。这是为了防止奇怪的轨迹球/非触摸导航行为。这可能就是您的edittexts没有响应输入的原因。确保您正在调用ListView.setItemsCanFocus（true）方法。

将viewGroup添加到ListView？

1 个答案: