滚动时我面临列表视图项目的奇怪选择。
初始选择截图(选择第一个条目)
滚动列表视图项目后自动选择为什么?(见下面的截图)
适配器源代码在这里
public View getView(int position, View convertView, ViewGroup parent) {
View vi=convertView;
if(convertView==null)
vi = inflater.inflate(R.layout.list_row, null);
TextView title = (TextView)vi.findViewById(R.id.title); // title
TextView artist = (TextView)vi.findViewById(R.id.artist); // artist name
TextView duration = (TextView)vi.findViewById(R.id.duration); // duration
ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image
HashMap<String, String> song = new HashMap<String, String>();
song = data.get(position);
// Setting all values in listview
title.setText(song.get(CustomizedListView.KEY_TITLE));
artist.setText(song.get(CustomizedListView.KEY_ARTIST));
duration.setText(song.get(CustomizedListView.KEY_DURATION));
imageLoader.DisplayImage(song.get(CustomizedListView.KEY_THUMB_URL), thumb_image);
return vi;
}
在 setonitemclicklistner() 中使按钮可见是问题所在
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
view.setSelected(true);
view.setBackgroundResource(R.drawable.gradient_bg_hover);
TextView title;
TextView artist;
title = (TextView)view.findViewById(R.id.title); // title
artist = (TextView)view.findViewById(R.id.artist); // artist
title.setTextColor(getResources().getColor(android.R.color.white));
artist.setTextColor(getResources().getColor(android.R.color.white));
ImageButton btnChild = (ImageButton)view.findViewById(R.id.arrow);
btnChild.setVisibility(View.VISIBLE);
if(lastselected!= null)
{
title = (TextView)lastselected.findViewById(R.id.title); // title
artist = (TextView)lastselected.findViewById(R.id.artist); // artist
title.setTextColor(getResources().getColor(android.R.color.black));
artist.setTextColor(getResources().getColor(android.R.color.black));
btnChild = (ImageButton)lastselected.findViewById(R.id.arrow);
btnChild.setVisibility(View.INVISIBLE);
lastselected.setBackgroundResource(R.drawable.gradient_bg);
}
lastselected= view;
图像按钮可见后,getview 会为下一个显示项目回收相同的视图。我不知道如何解决这个问题。