[Android算法] 实现获取视频的缩略图（ThumbnailUtils），并且播放

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);
}
});
}
}

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

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