如何获得视频缩略图路径，而不是位图 [英] How to get the video thumbnail path, and not the bitmap

问题描述

此问题是居然问，也应该回答此：<一href=\"http://stackoverflow.com/questions/14483682/android-get-video-thumbnail-path-not-bitmap\">android获得视频缩略图路径，而不是位图。

我试过几次，但不能让它开始工作。我总是得到一个空返回。任何帮助吗？

编辑：示例code我现在使用：

 公共静态字符串getVideoThumbnailPath（上下文的背景下，
        字符串文件路径）{
    串thubmnailPath;
    字符串，其中= Video.Thumbnails.VIDEO_ID
            +在（从视频_id哪里_data =？）;
    最终的String [] = VIDEO_THUMBNAIL_TABLE新的String [] {Video.Media._ID，// 0
            Video.Media.DATA，// 1
    };
    乌里VIDEOURI = MediaStore.Video.Thumbnails.getContentUri（外部）;    光标C = context.getContentResolver（）查询（VIDEOURI，
            VIDEO_THUMBNAIL_TABLE，在那里，新的String [] {}文件路径，NULL）;    如果（（C = NULL）及！＆安培; c.moveToFirst（））{
        thubmnailPath = c.getString（1）;
        c.close（）;
        Log.i（TAG，拇指路径：+ thubmnailPath）;
        返回thubmnailPath;
    }其他{
        c.close（）;
        Log.i（TAG，拇指路径为空）;
        返回null;
    }
}
 

解决方案

首先，你需要知道文件的内容URI。如果你的文件路径，这展示了如何获取内容的URI。

 公共静态的String [] = thumbColumns {MediaStore.Video.Thumbnails.DATA};
公共静态的String [] = mediaColumns {MediaStore.Video.Media._ID};公共静态字符串getThumbnailPathForLocalFile（活动的背景下，
        乌里了fileURI）{    长FILEID = getFileId（背景下，fileURI所）;    MediaStore.Video.Thumbnails.getThumbnail（context.getContentResolver（），
            FILEID，MediaStore.Video.Thumbnails.MICRO_KIND，NULL）;    光标thumbCursor = NULL;
    尝试{        thumbCursor = context.managedQuery（
                MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI，
                thumbColumns，MediaStore.Video.Thumbnails.VIDEO_ID +=
                        + FILEID，NULL，NULL）;        如果（thumbCursor.moveToFirst（））{
            字符串thumbPath = thumbCursor.getString（thumbCursor
                    .getColumnIndex（MediaStore.Video.Thumbnails.DATA））;            返回thumbPath;
        }    } {最后
    }    返回null;
}公共静态长getFileId（Activity上下文，乌里了fileURI）{    光标光标= context.managedQuery（fileURI所，mediaColumns，NULL，NULL，
            空值）;    如果（cursor.moveToFirst（））{
        INT参数：columnIndex =光标
                .getColumnIndexOrThrow（MediaStore.Video.Media._ID）;
        INT ID = cursor.getInt（参数：columnIndex）;        返回ID;
    }    返回0;
}
 

参考：的http://android$c$czs.blogspot.com/2013/10/android-thumbnail-from-video.html

This question is actually asked and supposedly answered here: android get video thumbnail PATH, not Bitmap.

I've tried several times but can't get it to work. I always get a null returned. Any help on this please?

Edit: The sample code I'm using now:

public static String getVideoThumbnailPath(Context context,
        String filePath) {
    String thubmnailPath;
    String where = Video.Thumbnails.VIDEO_ID
            + " In ( select _id from video where _data =?)";
    final String[] VIDEO_THUMBNAIL_TABLE = new String[] { Video.Media._ID, // 0
            Video.Media.DATA, // 1
    };
    Uri videoUri = MediaStore.Video.Thumbnails.getContentUri("external");

    Cursor c = context.getContentResolver().query(videoUri,
            VIDEO_THUMBNAIL_TABLE, where, new String[] { filePath }, null);

    if ((c != null) && c.moveToFirst()) {
        thubmnailPath = c.getString(1);
        c.close();
        Log.i(TAG, "thumb path: " + thubmnailPath);
        return thubmnailPath;
    } else {
        c.close();
        Log.i(TAG, "thumb path is null");
        return null;
    }
}

解决方案

First, you need to know the content uri of the file. If you have the file path, this shows you how to get the content uri.

public static String[] thumbColumns = { MediaStore.Video.Thumbnails.DATA };
public static String[] mediaColumns = { MediaStore.Video.Media._ID };

public static String getThumbnailPathForLocalFile(Activity context,
        Uri fileUri) {

    long fileId = getFileId(context, fileUri);

    MediaStore.Video.Thumbnails.getThumbnail(context.getContentResolver(),
            fileId, MediaStore.Video.Thumbnails.MICRO_KIND, null);

    Cursor thumbCursor = null;
    try {

        thumbCursor = context.managedQuery(
                MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI,
                thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID + " = "
                        + fileId, null, null);

        if (thumbCursor.moveToFirst()) {
            String thumbPath = thumbCursor.getString(thumbCursor
                    .getColumnIndex(MediaStore.Video.Thumbnails.DATA));

            return thumbPath;
        }

    } finally {
    }

    return null;
}

public static long getFileId(Activity context, Uri fileUri) {

    Cursor cursor = context.managedQuery(fileUri, mediaColumns, null, null,
            null);

    if (cursor.moveToFirst()) {
        int columnIndex = cursor
                .getColumnIndexOrThrow(MediaStore.Video.Media._ID);
        int id = cursor.getInt(columnIndex);

        return id;
    }

    return 0;
}

Reference: http://androidcodezs.blogspot.com/2013/10/android-thumbnail-from-video.html

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