Question

如何在exoplayer中显示视频图块（缩略图）而不是它的名称？

这是我已经使用过的代码，结果如下：

public class SampleChooserActivity extends Activity {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.sample_chooser_activity);

    ListView sampleList = (ListView) findViewById(R.id.sample_list);
    final SampleAdapter sampleAdapter = new SampleAdapter(this);

    sampleAdapter.add(new Header("Local Videos"));
    sampleAdapter.addAll((Object[]) Samples.LOCAL_VIDEOS);

    sampleList.setAdapter(sampleAdapter);
    sampleList.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Object item = sampleAdapter.getItem(position);
        if (item instanceof Samples.Sample) {
          onSampleSelected((Samples.Sample) item);
        }
      }
    });
  }

  private void onSampleSelected(Samples.Sample sample) {
    Intent mpdIntent = new Intent(this, PlayerActivity.class)
        .setData(Uri.parse(sample.uri))
        .putExtra(PlayerActivity.CONTENT_ID_EXTRA, sample.contentId)
        .putExtra(PlayerActivity.CONTENT_TYPE_EXTRA, sample.type)
        .putExtra(PlayerActivity.PROVIDER_EXTRA, sample.provider);
    startActivity(mpdIntent);
  }

  private static class SampleAdapter extends ArrayAdapter<Object> {

    public SampleAdapter(Context context) {
      super(context, 0);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = convertView;
      if (view == null) {
        int layoutId = getItemViewType(position) == 1 ? android.R.layout.simple_list_item_1
            : R.layout.sample_chooser_inline_header;
        view = LayoutInflater.from(getContext()).inflate(layoutId, null, false);
      }
      Object item = getItem(position);
      String name = null;
      if (item instanceof Samples.Sample) {
        name = ((Samples.Sample) item).name;
      } else if (item instanceof Header) {
        name = ((Header) item).name;
      }
      ((TextView) view).setText(name);
      return view;
    }

    @Override
    public int getItemViewType(int position) {
      return (getItem(position) instanceof Samples.Sample) ? 1 : 0;
    }

    @Override
    public int getViewTypeCount() {
      return 2;
    }

  }

  private static class Header {

    public final String name;

    public Header(String name) {
      this.name = name;
    }

  }

}

xml文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

  <ListView android:id="@+id/sample_list"
      android:layout_width="match_parent"
      android:layout_height="match_parent"/>

</LinearLayout>

如上图所示，视频名称显示，但我想显示视频的图块（缩略图）（视频截图）而不是视频名称，我该怎么做？
修改
我使用此代码将Bitmap作为缩略图但位图为空：

String path = "file:///android_asset/video1.mp4";
Bitmap thumb = ThumbnailUtils.createVideoThumbnail(path, MediaStore.Images.Thumbnails.MINI_KIND);

Answer 1

使用以下代码为您的视频创建缩略图：

Bitmap thumb = ThumbnailUtils.createVideoThumbnail(path, MediaStore.Images.Thumbnails.MINI_KIND);

在exoplayer中显示视频平铺

1 个答案: