在我的片段中,我有一个列表。我想在我的列表中显示数据。这是适配器类:
@Override
public int getCount() {
10;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
Log.e(TAG, "---");
if (convertView == null) {
convertView = myInflater.inflate(R.layout.list_topicslist, null);
holder = new ViewHolder();
holder.tvTitle = (TextView) convertView.findViewById(R.id.tvTitle);
holder.tvExcerpt = (TextView) convertView.findViewById(R.id.tvExcerpt);
holder.tvDate = (TextView) convertView.findViewById(R.id.tvDate);
holder.tvAuthor = (TextView) convertView.findViewById(R.id.tvAuthor);
holder.tvComment_Count = (TextView) convertView.findViewById(R.id.tvComment_Count);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.tvTitle.setText("Title");
holder.tvExcerpt.setText("Content");
holder.tvAuthor.setText("Hesam");
holder.tvComment_Count.setText("Votes:");
holder.tvDate.setText("1/1/2013");
return convertView;
}
这是 list_topicslist.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rlContainer"
android:background="@color/White" >
<RelativeLayout
android:id="@+id/rlHeader"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="25dp" android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" android:background="@color/bg_list_title">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title_author"
android:id="@+id/tvAuthor" android:layout_alignParentRight="true" android:layout_centerVertical="true"
android:layout_margin="@dimen/sideMargin" android:lines="1" android:maxLines="1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title_date"
android:id="@+id/tvDate" android:layout_alignParentLeft="true"
android:layout_margin="@dimen/sideMargin" android:maxLines="1"
android:lines="1" android:layout_centerVertical="true"/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/rlBody"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_below="@id/rlHeader" android:clickable="false">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:id="@+id/ivPostImage" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" android:layout_margin="@dimen/sideMargin"
android:src="@drawable/ic_loading_green"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title_title"
android:id="@+id/tvTitle" android:layout_toLeftOf="@+id/ivPostImage"
android:layout_alignTop="@+id/ivPostImage" android:layout_margin="@dimen/sideMargin" android:lines="1"
android:maxLines="3"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title_excerpt"
android:id="@+id/tvExcerpt" android:layout_toLeftOf="@+id/ivPostImage"
android:layout_below="@+id/tvTitle" android:layout_margin="@dimen/sideMargin" android:lines="1"
android:maxLines="6"/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/rlFooter"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="25dp"
android:layout_below="@id/rlBody"
android:background="@color/bg_list_footer">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/title_comment_count"
android:id="@+id/tvComment_Count" android:layout_alignParentRight="true"
android:layout_alignParentTop="true" android:layout_margin="@dimen/sideMargin"
android:layout_centerVertical="true" android:lines="1" android:maxLines="1"/>
</RelativeLayout>
</RelativeLayout>
这是片段的 xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" >
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/lvTopicsList"
android:scrollbars="none"
android:scrollingCache="false"
tools:listitem="@layout/list_topicslist" />
</RelativeLayout>
当我运行应用程序时,我看不到我的列表,但 Log 显示 getView() 已被调用。
02-28 21:09:10.195: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.220: D/dalvikvm(16184): GC_CONCURRENT freed 2720K, 33% free 11321K/16775K, paused 2ms+1ms
02-28 21:09:10.235: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.235: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.235: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.240: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.240: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.250: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.275: E/*** TopicAdapter ***(16184): ---
02-28 21:09:10.295: D/dalvikvm(16184): GC_CONCURRENT freed 262K, 31% free 11693K/16775K, paused 2ms+2ms
我的错误是什么,在哪里?任何建议,将不胜感激。谢谢