实现获取视频的缩略图（ThumbnailUtils），并且播放

 

 

 

 

 

main.xml

<?xml version="1.0" encoding="utf-8"?>  <FrameLayout    android:id="@+id/widget0"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="@drawable/white"    xmlns:android="http://schemas.android.com/apk/res/android"  >  <ImageView  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:id="@+id/imageview"  />  <LinearLayout  android:layout_width="wrap_content"  android:layout_height="wrap_content">  <ImageView  android:layout_width="40dip"  android:layout_height="40dip"  android:layout_marginLeft="70dip"  android:layout_marginTop="70dip"  android:src="@drawable/bf1"  />  </LinearLayout>  </FrameLayout>

 

 

 

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);                }          });          }  }  

 

 

 

 

<!-- 添加sdcard权限 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <!-- 在SDCard中创建与删除文件权限 -->
    <use-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></use-permission>
    <use-permission android:name="android.permission.RESTART_PACKAGES"></use-permission>