Question

在我的应用程序中，我试图在一个Activity的列表视图中显示视频列表，我试图在另一个Activity中显示所选视频的缩略图，因为我得到了一个用于在ImageView，

中显示缩略图的代码

iv = (ImageView)findViewById(R.id.imagePreview);
ContentResolver crThumb = getContentResolver();
BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 1;
Bitmap curThumb = MediaStore.Video.Thumbnails.getThumbnail(crThumb, id, MediaStore.Video.Thumbnails.MICRO_KIND, options);
iv.setScaleType(ScaleType.CENTER_CROP);
iv.setImageBitmap(curThumb);

仅当我在

中指定id的整数值时才会显示缩略图

Bitmap curThumb = MediaStore.Video.Thumbnails.getThumbnail(crThumb, id, MediaStore.Video.Thumbnails.MICRO_KIND, options);

但我想要的是获取所选视频的id值，以便我可以根据需要显示新的Activity。

感谢。

Answer 1


String[] projection = { BaseColumns._ID, MediaColumns.DATA };               
Cursor cursor = managedQuery(data, projection, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndexOrThrow(BaseColumns._ID);
int id = cursor.getInt(columnIndex);

此代码将为您提供帮助，“数据”是所选视频的uri

Answer 2

试一试：详情Click Here

int id = cursor.getInt(cursor.getColumnIndex(MediaStore.Video.Media._ID));
String[] thumbColumns = { MediaStore.Video.Thumbnails.DATA,
MediaStore.Video.Thumbnails.VIDEO_ID};
Cursor thumbCursor = managedQuery(MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI,
thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID + "=" + id, null, null);
if (thumbCursor.moveToFirst()) {
       Log.v("VideoGallery",thumbCursor.getColumnIndex(MediaStore.Video.Thumbnails.DATA));
}

如何获取视频的唯一ID

2 个答案: