GridView不能平滑滚动 [英] GridView is not Scrolling smoothly

问题描述

我在可绘制文件夹中存在100多个图像我在GridView中创建图库，但是面临着滚动问题。尽管我使用过ViewHolder，但GridView并不能顺利滚动......

这是我的代码...

 public class MainActivity extends Activity {
 int [100] Names_images = {R.drawable.img1，R.drawable.img3，R.drawable.img4，R.drawable.img5， R.drawable.img6，...}; // 100 images 
 
 String [100] names = {name1，name2，name3，name4，name5 name6，...}; // 100名称
 GridView gridview; 
 CustomizedGridAdapter1适配器; 
 @Override 
 protected void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_main）; 
 
 gridview =（GridView）findViewById（R.id.gridView）; 
 
 adapter = new CustomizedGridAdapter1（）; 
 gridview.setAdapter（adapter）; 
 
} 
 
 
静态类viewHolderClass {
 TextView Name; 
 ImageView name_img; 
 TextView Number; 
} 
 public class CustomizedGridAdapter1 extends BaseAdapter {
 
 LayoutInflater inflater = null; 
 @Override 
 public int getCount（）{
 return names.length; 
} 
 
 @Override 
 public Object getItem（int position）{
 
 return position; 
} 
 
 @Override 
 public long getItemId（int position）{
 
 return position; 
} 
 
 @Override 
 public View getView（int position，View v，ViewGroup parent）{
 
 viewHolderClass viewHolder = null; 
 
 
 if（v == null）{
 inflater =（LayoutInflater）（MainActivity.this）.getSystemService（Context.LAYOUT_INFLATER_SERVICE）; 
 v = inflater.inflate（R.layout.gridblock，parent，false）; 
 
 viewHolder = new viewHolderClass（）; 
 
 viewHolder.Name =（TextView）v.findViewById（R.id.name）; 
 viewHolder.name_img =（ImageView）v.findViewById（R.id.name_image）; 
 viewHolder.Number =（TextView）v.findViewById（R.id.number）; 
 
 v.setTag（viewHolder）; 
} else {
 viewHolder =（viewHolderClass）v.getTag（）; 
} 
 
 viewHolder.Name.setText（names [position]）; 
 viewHolder.name_img.setImageResource（Names_images [position]）; 
 viewHolder.Number.setText（String.valueOf（position + 1））; 
 
 
 return v; 
 
} //结束外部类
  

解决方案请尝试使用lazy loader之类的图片： https://github.com/nostra13/Android-Universal-Image-Loader

I have 100 plus images present in drawable folder I am creating gallery in GridView, But facing scrolling issues. gridView is not scrolling smoothly although I have used ViewHolder...

here is my code...

public class MainActivity extends Activity {
int[100] Names_images =    {R.drawable.img1,R.drawable.img3,R.drawable.img4,R.drawable.img5,R.drawable.img6,...};//100 images

  String[100] names = {"name1","name2","name3","name4","name5","name6",...};// 100 names    
GridView gridview; 
CustomizedGridAdapter1 adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

gridview = (GridView) findViewById(R.id.gridView);

adapter = new CustomizedGridAdapter1();
gridview.setAdapter(adapter);

}


 static class viewHolderClass{
     TextView Name;
     ImageView name_img;
     TextView Number;
    }
         public class CustomizedGridAdapter1 extends BaseAdapter {

    LayoutInflater inflater=null; 
    @Override
    public int getCount() {
        return names.length;
    }

    @Override
    public Object getItem(int position) {

        return position;
    }

    @Override
    public long getItemId(int position) {

        return position;
    }

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

        viewHolderClass viewHolder=null;


        if(v == null){
        inflater = (LayoutInflater)          (MainActivity.this).getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
         v = inflater.inflate(R.layout.gridblock,parent, false);

         viewHolder = new viewHolderClass();

         viewHolder.Name = (TextView)v.findViewById(R.id.name);
         viewHolder.name_img = (ImageView)v.findViewById(R.id.name_image);
         viewHolder.Number = (TextView)v.findViewById(R.id.number);

         v.setTag(viewHolder);
         }else{
             viewHolder = (viewHolderClass)v.getTag();
         }

    viewHolder.Name.setText(names[position]);
    viewHolder.name_img.setImageResource(Names_images[position]);
    viewHolder.Number.setText(String.valueOf(position+1));  


        return v;
    }
  }//end of outer Class

解决方案

Try using image lazzy loader like:

https://github.com/nostra13/Android-Universal-Image-Loader

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