Android 调用系统程序拍摄视频,并获取缩略图

代码转自:http://my.oschina.net/eclipse88/blog/80210

package com.example.videocapture;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.MediaStore.Video.Thumbnails;
import android.provider.MediaStore.Video.VideoColumns;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity {

    private static final int VIDEO_CAPTURE = 0;
    private ImageView imageView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        imageView = (ImageView) findViewById(R.id.imageView);
        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
                startActivityForResult(intent, VIDEO_CAPTURE);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK && requestCode == VIDEO_CAPTURE) {
            Uri uri = data.getData();
            Cursor cursor = this.getContentResolver().query(uri, null, null,
                    null, null);
            if (cursor != null && cursor.moveToNext()) {
                int id = cursor.getInt(cursor.getColumnIndex(VideoColumns._ID));
                String filePath = cursor.getString(cursor.getColumnIndex(VideoColumns.DATA));
                Bitmap bitmap = Thumbnails.getThumbnail(getContentResolver(),
                        id, Thumbnails.MICRO_KIND, null);
                //ThumbnailUtils类2.2以上可用
//				Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(filePath, Thumbnails.MICRO_KIND);
                imageView.setImageBitmap(bitmap);
                cursor.close();
            }
        }
    }
}