Android的RelativeLayout好像坏了

Question

我正在使用ListView和RelativeLayout行项目进行布局.lineitems本身无法正确显示.

问题是txtVideoDuration TextView是在行项目的顶部而不是在底部绘制的.因此,txtVideoTitle的高度为0.正如您在XML中看到的那样,txtVideoDuration应该被限制在ListView的底部.

我的目标是使布局类似于谷歌给我的教程.示例:http://android-developers.blogspot.com/2009/02/android-layout-tricks-1.html

我正在使用Android 2.0.1.我甚至插入了示例布局而不修改ListView并发生相同的行为.

<?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="?android:attr/listPreferredItemHeight"
android:padding="6dip">
<ImageView
    android:layout_width="wrap_content"
    android:layout_height="fill_parent"
    android:id="@+id/imgVideoThumbnail"
    android:layout_alignParentTop="true"
    android:layout_alignParentBottom="true"
    android:minHeight="64dip"
    android:layout_marginRight="6dip"
    android:src="@drawable/icon" />
<TextView 
    android:id="@+id/txtVideoDuration"
    android:layout_width="fill_parent"
    android:layout_height="26dip" 
    android:layout_toRightOf="@+id/imgVideoThumbnail"
    android:layout_alignParentBottom="true"
    android:layout_alignParentRight="true"
    android:singleLine="true"
    android:ellipsize="marquee"
    android:text="0:00:00" />
<TextView
    android:id="@+id/txtVideoTitle"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/imgVideoThumbnail"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:layout_above="@+id/txtVideoDuration"
    android:layout_alignWithParentIfMissing="true"
    android:gravity="center_vertical"
    android:text="[Title]"
    android:textColor="#FFFFFF" />

</RelativeLayout>

这个简单的案例有效.这是活动的根XML布局.顶部的错误代码是列表视图中的行项目.似乎ListView本身正在打破它.

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

<ListView
    android:id="@+id/listVideoCatalog"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />
<TextView
    android:id="@+id/txtName"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:text="Hello World" />
</RelativeLayout>
</merge>

这是将订单项膨胀到ListView中的getView代码.

    static class ViewHolder
{
    TextView txtTitle;
    ImageView imgThumbnail;
    TextView txtDuration;
    Uri videoLocation;
}

@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    ViewHolder holder;

    if(convertView == null)
    {
        LayoutInflater li = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = li.inflate(R.layout.listitem_videolineitem, null);
        holder = new ViewHolder();
        holder.txtDuration = (TextView) convertView.findViewById(R.id.txtVideoDuration);
        holder.txtTitle = (TextView) convertView.findViewById(R.id.txtVideoTitle);
        holder.imgThumbnail = (ImageView) convertView.findViewById(R.id.imgVideoThumbnail);
        convertView.setTag(holder);
    }
    else
    {
        holder = (ViewHolder) convertView.getTag();
    }

    VideoFile video = this.videos.get(position);
    holder.txtDuration.setText(millisToTimestamp(video.videoDuration));
    holder.txtTitle.setText(video.videoTitle);

            // Some debugger visual code.
    holder.txtDuration.setBackgroundColor(Color.GREEN);
    holder.txtTitle.setBackgroundColor(Color.CYAN);


    return convertView;
}

Answer 1

在接受的答案的评论中回答了这个问题.为了说清楚,这就是答案:

更改

li.inflate(R.layout.listitem_videolineitem, null);

至

li.inflate(R.layout.listitem_videolineitem, parent, false);

Answer 2

你如何夸大"buggy"的行视图？你能提供一个代码片段吗？

此外,android:orientation="vertical"无效RelativeLayout.