The [Android algorithm] is used to obtain the video Thumbnail (thumbnailutils) and play the video.

• Package com. Test. activity;
• Import java. Text. decimalformat;
• Import java. Text. numberformat;
• Import java. util. List;
• Import Android. App. activity;
• Import Android. App. alertdialog;
• Import Android. content. context;
• Import Android. content. dialoginterface;
• Import Android. content. intent;
• Import Android. Graphics. Bitmap;
• Import Android. Graphics. drawable. bitmapdrawable;
• Import Android. Graphics. drawable. drawable;
• Import android.net. Uri;
• Import Android. OS. Bundle;
• Import Android. OS. environment;
• Import Android. provider. mediastore. Images. thumbnails;
• Import Android. View. view;
• Import Android. widget. Button;
• Import Android. widget. imageview;
• Import Android. widget. textview;
• Import Android. Location. criteria;
• Import Android. Location. location;
• Import Android. Location. locationlistener;
• Import Android. Location. locationmanager;
• Import Android. Media. thumbnailutils;
• Import com. Google. Android. Maps. geopoint;
• Import com. Google. Android. Maps. mapactivity;
• Import com. Google. Android. Maps. mapcontroller;
• Import com. Google. Android. Maps. mapview;
• Import com. Google. Android. Maps. overlay;
• Import com. Google. Android. Maps. overlayitem;
• Import com. Test. activity. util. helloitemizedoverlay;
• Import com. Test. activity. util. myoverlay;
• Public
  Class mainactivity extends activity {
• @ Override
• Public
  Void oncreate (bundle savedinstancestate ){
• Super. oncreate (savedinstancestate );
• Setcontentview (R. layout. Main );
•  
  Bitmap
  Bitmap = thumbnailutils. createvideothumbnail (environment. getexternalstoragedirectory () + "/20110.mp4", thumbnails. mini_kind );
• Bitmap bitmap1 = thumbnailutils. extractthumbnail (bitmap, 200,200 );
• Bitmapdrawable d = new bitmapdrawable (bitmap1 );
• (Imageview) findviewbyid (R. Id. imageview). setbackgrounddrawable (d );
• (Imageview) findviewbyid (R. Id. imageview). setonclicklistener (New View. onclicklistener (){
• @ Override
• Public
  Void onclick (view v ){
• // Todo auto-generated method stub
• Intent it = new intent (intent. action_view );
• System. Out. println (environment. getexternalstoragestate (). Equals (environment. media_mounted ));
• Uri uri = URI. parse (environment. getexternalstoragedirectory () + "/20110.mp4 ");
• It. setdataandtype (Uri, "Video/MP4 ");
• Startactivity (it );
• }
• });
• }
• }

Original http://blog.csdn.net/sun6223508/archive/2011/06/28/6573257.aspx