当用户单击一行时，我想在列表视图中包含一个播放图标。
我正在使用自定义适配器（带有分隔符的延迟加载）...我遇到了分隔符与其他行重叠的问题，因此我实现了 getViewTypeCount() 方法来解决它。
现在，当我在列表视图的 onItemClickListener 上包含一个播放图标时，图标被添加得很好，但它与其他行重叠（分隔符除外）......
这是我的代码：
OnItemCLickListener ：
listChannels.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
if (oldView != null) {
oldView.setDrawingCacheEnabled(true);
ImageView icon = (ImageView) oldView.findViewById(R.id.imageViewPlay);
icon.setImageBitmap(null);
icon.setVisibility(ImageView.GONE);
icon.invalidate();
}
oldView = arg1;
selectedItem = arg2;
ImageView icon = (ImageView) arg1.findViewById(R.id.imageViewPlay);
icon.setImageResource(R.drawable.play_small);
icon.setVisibility(ImageView.VISIBLE);
Intent intent = new Intent(StationList2.this,
ServiceLauncher.class);
intent.putExtra("objectPassed", feeds.get(arg2));
startActivity(intent);
}
});
我的自定义适配器：
private class MyCustomAdapter extends BaseAdapter {
private static final int TYPE_ITEM = 0;
private static final int TYPE_SEPARATOR = 1;
private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1;
private ArrayList<BeanChannelList> mData = new ArrayList<BeanChannelList>();
private LayoutInflater mInflater;
private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>();
public MyCustomAdapter() {
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
imageLoader = new ImageLoader(activity.getApplicationContext());
}
public void addItem(final BeanChannelList beanChannelList) {
mData.add(beanChannelList);
notifyDataSetChanged();
}
public void addSeparatorItem(final BeanChannelList beanChannelList) {
mData.add(beanChannelList);
// save separator position
mSeparatorsSet.add(mData.size() - 1);
notifyDataSetChanged();
}
@Override
public int getItemViewType(int position) {
return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR
: TYPE_ITEM;
}
@Override
public int getViewTypeCount() {
return TYPE_MAX_COUNT;
}
@Override
public int getCount() {
return mData.size();
}
@Override
public String getItem(int position) {
return mData.get(position).getStrTitle();
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
int type = getItemViewType(position);
if (convertView == null) {
holder = new ViewHolder();
switch (type) {
case TYPE_ITEM:
convertView = mInflater
.inflate(R.layout.listitem_row, null);
holder.textView = (TextView) convertView
.findViewById(R.id.textView1);
holder.textview2 = (TextView) convertView
.findViewById(R.id.textView2);
holder.image = (ImageView) convertView
.findViewById(R.id.imageView1);
holder.imagePlay = (ImageView) convertView
.findViewById(R.id.imageViewPlay);
break;
case TYPE_SEPARATOR:
convertView = mInflater.inflate(R.layout.item2, null);
holder.textView = (TextView) convertView
.findViewById(R.id.textView1);
holder.textview2 = (TextView) convertView
.findViewById(R.id.textView2);
holder.image = (ImageView) convertView
.findViewById(R.id.imageView1);
holder.imagePlay = (ImageView) convertView
.findViewById(R.id.imageViewPlay);
convertView.setClickable(false);
convertView.setFocusable(false);
convertView.setFocusableInTouchMode(false);
convertView.setEnabled(false);
break;
}
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
try {
if (mData.get(position).getStrChannelNo().equals("")) {
holder.textView.setText(mData.get(position)
.getStrChannelNo()
+ " "
+ mData.get(position).getStrTitle());
}
else {
holder.textView.setText(mData.get(position)
.getStrChannelNo()
+ ": "
+ mData.get(position).getStrTitle());
}
if (selectedItem == position) {
holder.imagePlay.setImageResource(R.drawable.play_small);
holder.imagePlay.setVisibility(ImageView.VISIBLE);
}
holder.textview2.setText(mData.get(position).getStrLocation());
imageLoader.DisplayImage(mData.get(position).getStrImage()
.toString(), activity, holder.image);
} catch (Exception e) {
e.printStackTrace();
}
return convertView;
}
}