Question

我需要在listView中打开frameLayout细节，但是当我按下buttonDetails时，它会打开一个错误的frameLayout。

这是我的adapterView的代码

public class SitesAdapter extends ArrayAdapter<AtlantisSite> {

ImageLoader imageLoader;
DisplayImageOptions options;
FrameLayout frameLayout;

public SitesAdapter(Context ctx, int textViewResourceId, List<AtlantisSite> sites) {
    super(ctx, textViewResourceId, sites);

    //Setup the ImageLoader, we'll use this to display our images
    ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(ctx).build();
    imageLoader = ImageLoader.getInstance();
    imageLoader.init(config);

    //Setup options for ImageLoader so it will handle caching for us.
    options = new DisplayImageOptions.Builder()
            .cacheInMemory(true)
            .cacheOnDisk(true)
            .build();
}

/*
 * (non-Javadoc)
 * @see android.widget.ArrayAdapter#getView(int, android.view.View, android.view.ViewGroup)
 * 
 * This method is responsible for creating row views out of a AtlantisSite object that can be put
 * into our ListView
 */

@Override
public View getView(final int pos, final View convertView, final ViewGroup parent){
    RelativeLayout row = (RelativeLayout)convertView;
    Log.i("AtlantisSites", "getView pos = " + pos);
    //ViewHolder mainViewHolder = null;
    final ViewHolder viewHolder;

    if(null == row){
        //No recycled View, we have to inflate one.
        LayoutInflater inflater = (LayoutInflater)parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        row = (RelativeLayout)inflater.inflate(R.layout.row_site, null);

        viewHolder = new ViewHolder();
        viewHolder.btnDownload = (Button) row.findViewById(R.id.btnDownload);
        viewHolder.btnDownload.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Integer pos=(Integer)v.getTag();
                Log.i("AtlantisSites", "getView pos = " + pos);
                //String url = getItem(pos).getLink();
                DownloadZip zipActivity = new DownloadZip();
                zipActivity.DownloadFromUrlZip();
                //Intent i = new Intent(Intent.ACTION_VIEW);
                //i.setData(Uri.parse(url));
                //Intent zipActivity = new DownloadZip();
                //zipActivity.start...;


                //Toast.makeText(getContext(), "Downloading " + pos, Toast.LENGTH_SHORT).show();
            }
});
viewHolder.btnDetails = (Button) row.findViewById(R.id.btnDetails);
viewHolder.btnDetails.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        //Integer pos = (Integer) v.getTag();
        //Log.i("AtlantisSites", "getView pos = " + pos);
        getItemId(pos);
        if(frameLayout.getVisibility()==View.GONE){
            showFrameLayout();
        } else {
            hideFrameLayout();
        }
    }
});

        row.setTag(viewHolder);
    } else{
        viewHolder = (ViewHolder) row.getTag();
    }




    //Get our View References
    final ImageView iconImg = (ImageView)row.findViewById(R.id.iconImg);
    TextView nameTxt = (TextView)row.findViewById(R.id.nameTxt);
    TextView titleTxt = (TextView)row.findViewById(R.id.titleTxt);
    //Button btnDownload = (Button)row.findViewById(R.id.btnDownload);
    TextView summaryIta = (TextView)row.findViewById(R.id.textViewSummaryItaRow);
    TextView summaryEng = (TextView)row.findViewById(R.id.textViewSummaryEngRow);
    TextView priceItaTxt=(TextView)row.findViewById(R.id.txtViewPriceIta);
    TextView priceEngTxt=(TextView)row.findViewById(R.id.txtViewPriceEng);
    final ProgressBar indicator = (ProgressBar)row.findViewById(R.id.progress);

    frameLayout = (FrameLayout)row.findViewById(R.id.frame_layout_listview);





    //Set the relavent text in our TextViews
    nameTxt.setText(getItem(pos).getName());
    titleTxt.setText(getItem(pos).getTitle());
    summaryIta.setText(getItem(pos).getSummaryIta());
    summaryEng.setText(getItem(pos).getSummaryEng());
    viewHolder.btnDetails.setTag(pos);

    return row;

}

public class ViewHolder{
    Button btnDownload;
    Button btnDetails;
}

private void showFrameLayout(){
    frameLayout = (FrameLayout) frameLayout.findViewById(R.id.frame_layout_listview);
    frameLayout.setVisibility(View.VISIBLE);
}
private void hideFrameLayout(){
    frameLayout = (FrameLayout) frameLayout.findViewById(R.id.frame_layout_listview);
    frameLayout.setVisibility(View.GONE);
}

}

这个职位出了点问题。请帮我找到错误解决方案。感谢

Answer 1

在方法showFrameLayout（）中你没有任何对你想要显示的当前帧布局的引用，删除方法show / hide frameLayout和在监听器内部的详细信息btn

viewHolder.btnDetails.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        //Integer pos = (Integer) v.getTag();
        //Log.i("AtlantisSites", "getView pos = " + pos);
        getItemId(pos);
        FrameLayout detailsFrame = row.findViewById(R.id.frame_layout_listview);
        if(detailsFrame.getVisibility()==View.GONE){
            detailsFrame.setVisibility(View.VISIBLE);
        } else {
            detailsFrame.setVisibility(View.GONE);
        }
    }
});

作为一般建议，我将把我的FrameLayout放在视图中，这对于它来说是什么。

Answer 2

我找到了解决方案。我必须声明Frame Layout final。它的工作原理

final FrameLayout detailsFrame =（FrameLayout）row.findViewById（R.id.frame_layout_listview）;

项目位置错误到ListView

2 个答案: