androidraw视频教程,Androidraw目录下视频的缩略图的获取

Android raw 目录下视频的缩略图的获取

以下代码用于获取 Android raw目录下视频文件的缩略图&＃xff1a;

/**

* 获取 raw 下 指定视频文件的缩略图

* &＃64;param aVideoName

* &＃64;return

*/

private Drawable getThumbnail(String aVideoName)

{

Drawable ret &＃61; null;

int id &＃61; 0;

try

{

id &＃61; R.raw.class.getDeclaredField(aVideoName).getInt(this);

Uri videoURI &＃61; Uri.parse("android.resource://" &＃43; this.getPackageName() &＃43; "/" &＃43; id);

ret &＃61; getThumbnail(videoURI);

} catch ( IllegalAccessException aE )

{

aE.printStackTrace();

} catch ( NoSuchFieldException aE )

{

aE.printStackTrace();

}

return ret;

}

private Drawable getThumbnail(Uri aVideoUri)

{

MediaMetadataRetriever retriever &＃61; new MediaMetadataRetriever();

retriever.setDataSource(this, aVideoUri);

Bitmap bitmap &＃61; retriever

.getFrameAtTime(1*1000*1000, MediaMetadataRetriever.OPTION_PREVIOUS_SYNC);

Drawable drawable &＃61; new BitmapDrawable(getResources(), bitmap);

return drawable;

}

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时间&＃xff1a; 2017-07-05