Get Thumbnail of video

The method MediaStore.Video.Thumbnails.getThumbnail (ContentResolver cr, long origId, int kind, BitmapFactory.Options options) checks if the thumbnails of the specified image (origId) has been created. It will be blocked until the thumbnails are generated. a Bitmap object will be returned, or null if the original image associated with origId doesn't exist or memory is not enough.

Parameters
- cr: ContentResolver used to dispatch queries to MediaProvider.
- origId: Original image id associated with thumbnail of interest.
- kind: The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND.
- options: this is only used for MINI_KIND when decoding the Bitmap



Modify from last exercise "MediaPlay on SurfaceView: correct aspect ratio".

Modify setTargetUri() method in PlayerFragment.java to get Thumbnail of specified id.

package com.exercise.AndroidListMedia;

import java.io.IOException;

import android.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.media.AudioManager;

public class PlayerFragment extends Fragment
implements SurfaceHolder.Callback {

Uri targetUri = null;

MediaPlayer mediaPlayer;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
boolean pausing = false;

TextView mediaUri;
Button buttonPlayVideo, buttonPauseVideo;
ImageView thumbView;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.playerlayout, container, false);
mediaUri = (TextView)view.findViewById(R.id.mediauri);
buttonPlayVideo = (Button)view.findViewById(R.id.playvideoplayer);
buttonPauseVideo = (Button)view.findViewById(R.id.pausevideoplayer);
surfaceView = (SurfaceView)view.findViewById(R.id.surfaceview);

thumbView = (ImageView)view.findViewById(R.id.mediathumb);

getActivity().getWindow().setFormat(PixelFormat.UNKNOWN);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setFixedSize(176, 144);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mediaPlayer = new MediaPlayer();


buttonPlayVideo.setOnClickListener(new Button.OnClickListener(){

@Override
public void onClick(View arg0) {

if(targetUri != null){

pausing = false;

if(mediaPlayer.isPlaying()){
mediaPlayer.reset(); 
}

mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDisplay(surfaceHolder);

try {
mediaPlayer.setDataSource(getActivity().getApplicationContext(), targetUri);
mediaPlayer.prepare();       
} catch (IllegalArgumentException e) {
e.printStackTrace();
Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
} catch (IllegalStateException e) {
e.printStackTrace();
Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
}

/*
*  Handle aspect ratio
*/
int surfaceView_Width = surfaceView.getWidth();
int surfaceView_Height = surfaceView.getHeight();

float video_Width = mediaPlayer.getVideoWidth();
float video_Height = mediaPlayer.getVideoHeight();

float ratio_width = surfaceView_Width/video_Width;
float ratio_height = surfaceView_Height/video_Height;
float aspectratio = video_Width/video_Height;

LayoutParams layoutParams = surfaceView.getLayoutParams();

if (ratio_width > ratio_height){
layoutParams.width = (int) (surfaceView_Height * aspectratio);
layoutParams.height = surfaceView_Height;
}else{
layoutParams.width = surfaceView_Width;
layoutParams.height = (int) (surfaceView_Width / aspectratio);
}

surfaceView.setLayoutParams(layoutParams);
/*
*
*/

mediaPlayer.start();
}

}});

buttonPauseVideo.setOnClickListener(new Button.OnClickListener(){

@Override
public void onClick(View arg0) {
if(targetUri != null){
if(pausing){
pausing = false;
mediaPlayer.start(); 
}
else{
pausing = true;
mediaPlayer.pause(); 
}
}
}});

return view;
}

@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}

@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
mediaPlayer.release();
}

@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub

}

@Override
public void surfaceCreated(SurfaceHolder arg0) {
// TODO Auto-generated method stub

}

@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub

}

public void setTargetUri(Uri u, int id){
targetUri = u;
mediaUri.setText(
"Uri: " + u.toString() + "\n" +
"ID: " + id);

//Get Thumbnail
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bitmapThumb = MediaStore.Video.Thumbnails.getThumbnail(
getActivity().getContentResolver(),
id,
Images.Thumbnails.MICRO_KIND,
options);

thumbView.setImageBitmap(bitmapThumb);
}

}

Modify onListItemClick() method of VideoListFragment.java to pass ID to PlayerFragment.setTargetUri().

package com.exercise.AndroidListMedia;
import android.app.ListFragment;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public class VideoListFragment extends ListFragment {

SimpleCursorAdapter adapter;
final Uri mediaSrc = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);

String _id = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media._ID));
int intID = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID));

Uri playableUri
= Uri.withAppendedPath(mediaSrc, _id);

AndroidListMediaActivity mainActivity = (AndroidListMediaActivity)getActivity();
mainActivity.myPlayerFragment.setTargetUri(playableUri, intID);
}

@Override
public void onStart() {
// TODO Auto-generated method stub
super.onStart();
String[] from = {
MediaStore.MediaColumns.TITLE};
int[] to = {
android.R.id.text1};

Cursor cursor = getActivity().managedQuery(
mediaSrc,
null,
null,
null,
MediaStore.Audio.Media.TITLE);

adapter = new SimpleCursorAdapter(getActivity(),
android.R.layout.simple_list_item_1, cursor, from, to);
setListAdapter(adapter);
}

}

Modify playerlayout.xml to add a ImageView to display thumbnail.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/mediathumb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/mediauri"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/playvideoplayer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="- PLAY Video -"/>
<Button
android:id="@+id/pausevideoplayer"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="- PAUSE Video -"/>
</LinearLayout>

</LinearLayout>

<SurfaceView
android:id="@+id/surfaceview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center" />

</LinearLayout>

Download the files.

Next:
- Display video thumbnail on ListFragment with customized SimpleCursorAdapter