实现获取视频的缩略图（ThumbnailUtils），并且播放 .

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>