如何在 android 中平滑我的 gridview 滚动？

Question

我正在通过以下代码为 gridview 使用 class。我如何通过 viewholder 或其他方法平滑我的 gridview 滚动？我只希望我的滚动 gridview 性能非常流畅。我使用此 gridview 显示图像和名称，然后单击 eacj 项目打开另一个 activity 了解详细信息。

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomGrid extends BaseAdapter{

private Context mContext;
private final String[] web;
private final int[] Imageid;


public CustomGrid(Context c, String[] web, int[] Imageid) {
    mContext = c;
    this.Imageid = Imageid;
    this.web = web;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
    return web.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
    return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
    return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
    View grid;
    LayoutInflater inflater = (LayoutInflater)         mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    grid = new View(mContext);
    grid = inflater.inflate(R.layout.grid_item, null);
    TextView textView = (TextView) grid.findViewById(R.id.grid_text);
    ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
    textView.setText(web[position]);
    imageView.setImageResource(Imageid[position]);


    return grid;
}
}

Answer 1

始终尝试对列表和网格使用 ViewHolder 模式，这会提高列表和网格的性能：

    @Override
public View getView(int position, View convertView, ViewGroup parent) {

    ViewHolder viewHolder = null;
    if(convertView==null){
        viewHolder = new ViewHolder();
        convertView = inflater.inflate(R.layout.grid_item,parent,false);

        convertView.setTag(viewHolder);
    }
    else {
        viewHolder=(ViewHolder)convertView.getTag();
    }
    viewHolder.image=(ImageView)convertView.findViewById(R.id.thumbnail);
    viewHolder.title=(TextView)convertView.findViewById(R.id.title);
    viewHolder.title.setText(Html.fromHtml(values.getPosts().get(position).getTitle()));

    imageView.setImageResource(Imageid[position]);
    return convertView;
}

private static class ViewHolder{
    public static ImageView image;
    public static TextView title;
}

如何在 android 中平滑我的 gridview 滚动？

how to smooth my gridview scrolling in android?

android

gridview

android-viewholder