Question

我在缩略图中显示视频时遇到问题..

从数据库中检索视频链接并将其存储在字符串数组中。

我想在缩略图网格视图中显示视频数组。怎么实现这个？它可以显示？

任何人都可以帮助我吗？非常感谢。

我试过了......

vid = new ArrayList<String>(new ArrayList<String>(vid));

runOnUiThread(new Runnable() {
   public void run() {
      setContentView(R.layout.gallery);
      GridView grd = (GridView)findViewById(R.id.gridView1);
      grd.setAdapter(new ImageAdapter(this));
      grd.setOnItemClickListener(new OnItemClickListener()
      {
      public void onItemClick(AdapterView<?> parent,View v,int pos,long id)
      {
      Toast.makeText(getBaseContext(),
                        "pic"+(pos+1)+"select ",Toast.LENGTH_SHORT).show();
      }
    });
 }
   });
      return;
     private class ImageAdapter extends BaseAdapter {
     private final Runnable context; 
     public ImageAdapter(Runnable runnable) {
           context = runnable;
    }
    public int getCount() 
    {
        return vid.size();
    }
    public Object getItem(int position) 
    {
        return position;
    }
    public long getItemId(int position) 
    {
        return position;
    }
    public View getView(int position, View convertView, ViewGroup parent) 
    {
        ImageView picturesView;
        if (convertView == null) {
           picturesView = new ImageView((Context) context);
            //Creation of Thumbnail of video
           Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(vid.get(position),0);
           picturesView.setImageBitmap(bitmap);
           picturesView.setScaleType(ImageView.ScaleType.FIT_XY);
            //picturesView.setPadding(8, 8, 8, 8);
           picturesView.setLayoutParams(new Gallery.LayoutParams(150, 120));
        }else {
            picturesView = (ImageView)convertView;
        }
        return picturesView;
    }

Answer 1

它非常简单，而不是字符串数组使用对象arraylist，它具有网格项和视频网址的缩略图/位图，如下所示。

class video
{
  Bitmap thumnail;
  String videoURL;
}

从数据库中创建此视频类的arraylist然后在getview中使用该arraylist。

 videoList = new ArrayList<Video>();
 // populate videolist


public int getCount() 
{
    return videoList.size();
}

 public View getView(int position, View convertView, ViewGroup parent) 
{
    ImageView picturesView;
    if (convertView == null) {
       picturesView = new ImageView((Context) context);
        //Creation of Thumbnail of video
       //Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(vid.get(position),0);
       Bitmap bitmap = videoList.get(position).thumnail;
       picturesView.setImageBitmap(bitmap);
       picturesView.setScaleType(ImageView.ScaleType.FIT_XY);
        //picturesView.setPadding(8, 8, 8, 8);
       picturesView.setLayoutParams(new Gallery.LayoutParams(150, 120));
    }else {
        picturesView = (ImageView)convertView;
    }
    return picturesView;
}

然后在onitemclick中，使用相同的arraylist你可以获得视频，你可以在单独的屏幕上播放视频。

 grd.setOnItemClickListener(new OnItemClickListener()
  {
  public void onItemClick(AdapterView<?> parent,View v,int pos,long id)
  {
     String videoLink = videoList.get(pos).videoURL;
     // pass this video link to another activity where you want to play the video
  }
});

如何以缩略图显示视频网址？

1 个答案: