Question

这是我的代码，它响应三星手机上的Outofmemory错误！我在谷歌搜索非常多但没有回答。在列表中显示图像时显示强制关闭。

public class CustomList extends ArrayAdapter<String>{

      private final Activity context;
      private final String[] web;
      private final String[] imageId;

      public CustomList(Activity context,String[] web,String[] img) {
        super(context, R.layout.tag_list_item, web);
        this.context = context;
        this.web = web;
        this.imageId = img;
      }

      @SuppressLint({ "ViewHolder", "InflateParams" })
    @Override
      public View getView(int position, View view, ViewGroup parent) {
        LayoutInflater inflater = context.getLayoutInflater();
        View rowView= inflater.inflate(R.layout.tag_list_item, null, true);
        TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);

        ImageView imageView = (ImageView) rowView.findViewById(R.id.img);
        txtTitle.setText(web[position]);
        try{
        Resources resources = context.getResources();

        final int resourceId = resources.getIdentifier("cat_"+imageId[position].trim().toString(), "drawable", 
           context.getPackageName());
         //resources.getDrawable(resourceId);
         imageView.setImageDrawable(resources.getDrawable(resourceId));
        }catch(Exception e){
            Toast.makeText(getApplicationContext(), e.toString()+"   "+imageId[position].trim().toString(), Toast.LENGTH_LONG).show();
        }
        return rowView;
      }

}

Answer 1

您应优化代码以防止每次滚动时重新创建行。

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

    if (convertView == null) {

        LayoutInflater inflater = (LayoutInflater) getContext()
                  .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.tag_list_item, null);
        viewHolder = new ViewHolder();
        viewHolder.txtTitle =(TextView)convertView.findViewById(R.id.txt);
        viewHolder.imageView = (ImageView)convertView.findViewById(R.id.img);
        convertView.setTag(viewHolder);

    } else {

        viewHolder = (ViewHolder) convertView.getTag(); // this line doesn' t recreate the view but reuse the one created before
    }

   viewHolder.txtTitle.setText(web[position]);

    try{

    Resources resources = context.getResources();
    final int resourceId = resources.getIdentifier("cat_"+imageId[position].trim().toString(), "drawable", 
       context.getPackageName());
     //resources.getDrawable(resourceId);
     viewHolder.imageView.setImageDrawable(resources.getDrawable(resourceId));

    }catch(Exception e){

        Toast.makeText(getApplicationContext(), e.toString()+"   "+imageId[position].trim().toString(), Toast.LENGTH_LONG).show();
    }
    return convertView;

}

private class ViewHolder {
    public TextView txtTitle;
    public ImageView imageview;
}

希望它有所帮助......快乐的编码：）

Answer 2

我在清单中使用了堆积并结束了。

Android ImageView Outof内存

2 个答案: