如何获取 android 中的视频缩略图？

Question

我正在尝试获取视频的缩略图。但不幸的是我无法获得缩略图。

        itmap bmThumbnail;

        // MICRO_KIND: 96 x 96 thumbnail
        bmThumbnail = ThumbnailUtils.createVideoThumbnail("file://" + catBean.tempImage,
                MediaStore.Video.Thumbnails.MICRO_KIND);
        img_icon.setImageBitmap(bmThumbnail);

Answer 1

我在我的应用中创建了这样的视频缩略图

 Bitmap myBitmap = BitmapFactory.decodeFile(pathOfFile);
    if(myBitmap == null) {
        myBitmap = ThumbnailUtils.createVideoThumbnail(pathOfFile, Thumbnails.MICRO_KIND);

 }

Answer 2

试试这个

Bitmap bMap = ThumbnailUtils.createVideoThumbnail(file.getAbsolutePath(), MediaStore.Video.Thumbnails.MICRO_KIND);

有关更多详细信息，请参阅此 ThumbnailUtils

Answer 3

做起来并不难。像这样：

int id = **"The Video's ID"**
ImageView iv = (ImageView ) convertView.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.setImageBitmap(curThumb);

在以下位置查看有关 MediaStore 的更多信息：http://developer.android.com/reference/android/provider/MediaStore.Video.html

Answer 4

在Xml中：

 <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:orientation="vertical" >

            <ImageView
                android:id="@+id/thumbnail"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical|center_horizontal" />
</LinearLayout>

在java中：

 long id = ""; //Video Id 

 ImageView thumbnail = (ImageView) findViewById(R.id.thumbnail);
 ContentResolver crThumb = getContentResolver();
 BitmapFactory.Options options = new BitmapFactory.Options();
 options.inSampleSize = 2;
 Bitmap curThumb = MediaStore.Video.Thumbnails.getThumbnail(crThumb, id,
                            MediaStore.Video.Thumbnails.MINI_KIND, options);
 thumbnail.setImageBitmap(curThumb);

Answer 5

以下代码运行完美：

Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(file.getAbsolutePath(), MediaStore.Video.Thumbnails.MICRO_KIND);

如果您没有通过 CURSOR 或者如果您只有 PATH 或 FILE OBJECTS，您可以使用 :

 public static Bitmap createVideoThumbnail (String filePath, int kind)

参考：http://developer.android.com/reference/android/media/ThumbnailUtils.html#createVideoThumbnail%28java.lang.String,%20int%29

如何获取 android 中的视频缩略图？

How to get video thumbnail in android?

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android-videoview