查找本地所有视频,选择视频上传到服务器

1.在这里上传视频到服务器用的是xutils3.0,当然大家也可以用okhttp进行操作.
第一步:我们就是要从我们app的视频列表,进入我们查询本地视频的那个activity,代码如下:

 Intent i = new Intent(SelectVideoActivity.this, 
    GetVideoActivity.class);
 startActivityForResult(i, REQUEST_CODE);

这里用startActivityForResult是为了获取返回选中的本地视频的信息.

第二步:在GetVideoActivity里面查询本地所有视频,并将查询到的视频显示在我们GetVideoActivity的页面上,代码如下:

GetVideoActivity的xml布局代码:

  
      android:id="@+id/lv_video"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
 

GetVideoActivity中的代码:

public class GetVideoActivity extends Activity {
    private ListView lv;
    Context mContext;
    private VideodetailAdapter adapter;
    private List bit = new ArrayList();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_get);
        lv = (ListView) findViewById(R.id.lv_video);
        mContext = this;
        new Search_photo().start();
    }


    private Handler mHandler = new Handler() {
        @SuppressLint("ShowToast")
        public void handleMessage(android.os.Message msg) {
            if (msg.what == 1&&bit!=null) {
                adapter = new VideodetailAdapter(mContext, bit);
                Toast.makeText(mContext, "视频总数:" + bit.size(), Toast.LENGTH_SHORT).show();
                lv.setAdapter(adapter);
                lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {

                    @Override
                    public void onItemClick(AdapterView arg0, View arg1, int arg2, long arg3) {
                        if(bit.size()!=0){
                            Intent intent = new Intent();
//                            String type = "video/mp4";
//                            Uri uri = Uri.parse("file://"+bit.get(arg2).getUri());
//                            intent.setDataAndType(uri, type);
//                            startActivity(intent);
                            String uri = bit.get(arg2).getUri();
                            intent.putExtra("url",bit.get(arg2).getUri());
                            Log.e("url_ssss", bit.get(arg2).getUri());
                            setResult(RESULT_OK, intent);
                            finish();
                        }
                    }
                });
            }
        };
    };
    /**
     *
     * 遍历系统数据库找出相应的是视频的信息，每找出一条视频信息的同时利用与之关联的找出对应缩略图的uri   
     * 再异步加载缩略图，
     * 由于查询速度非常快，全部查找完成在设置，等待时间不会太长
     * @author Administrator
     *
     */
    class Search_photo extends Thread {
        @Override
        public void run() {
            // 如果有sd卡（外部存储卡）
            if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {
                Uri originalUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                ContentResolver cr = mContext.getApplicationContext().getContentResolver();
                Cursor cursor = cr.query(originalUri, null, null, null, null);
                if (cursor == null) {
                    return;
                }
                for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
                    String title = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));
                    String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));
                    long size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.SIZE));
                    long duration = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DURATION));
                    //获取当前Video对应的Id，然后根据该ID获取其缩略图的uri  
                    int id = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID));
                    String[] selectionArgs = new String[] { id + "" };
                    String[] thumbColumns = new String[] { MediaStore.Video.Thumbnails.DATA,
                            MediaStore.Video.Thumbnails.VIDEO_ID };
                    String selection = MediaStore.Video.Thumbnails.VIDEO_ID + "=?";

                    String uri_thumb = "";
                    Cursor thumbCursor = (mContext.getApplicationContext().getContentResolver()).query(
                            MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI, thumbColumns, selection, selectionArgs,
                            null);

                    if (thumbCursor != null && thumbCursor.moveToFirst()) {
                        uri_thumb = thumbCursor
                                .getString(thumbCursor.getColumnIndexOrThrow(MediaStore.Video.Thumbnails.DATA));

                    }

                    BitmapEntity bitmapEntity = new BitmapEntity(title, path, size, uri_thumb, duration);
                    bit.add(bitmapEntity);

                }
                if (cursor != null) {
                    cursor.close();
                    mHandler.sendEmptyMessage(1);
                }
            }
        }
    }
}

第三步:ListView视频列表VideodetailAdapter的item的布局文件代码如下:

第四步:适配器VideodetailAdapter的代码:

import android.annotation.SuppressLint;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList;
import java.util.List;

import teacher.arriga.com.arrigateacher.R;
import teacher.arriga.com.arrigateacher.activity.video.BitmapEntity;
import teacher.arriga.com.arrigateacher.activity.video.TimeChange;

/**
 * Created by Administrator on 2017/3/7.
 */




    @SuppressLint({"InflateParams", "ViewHolder"})
    public class VideodetailAdapter extends BaseAdapter {

        private List objects = new ArrayList();

        @SuppressWarnings("unused")
        private Context context;
        private LayoutInflater layoutInflater;

        public VideodetailAdapter(Context context, List objects) {
            this.context = context;
            this.layoutInflater = LayoutInflater.from(context);
            this.objects = objects;
        }

        public List setObjects(List objects) {
            return this.objects = objects;
        }

        @Override
        public int getCount() {
            return objects.size();
        }

        @Override
        public BitmapEntity getItem(int position) {
            return objects.get(position);
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        /**
         * 数据量过大可能出现错乱，暂时不用缓存策略
         */
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.videtail_list, null);
            ViewHolder viewHolder = new ViewHolder();
            viewHolder.imgv = (ImageView) convertView.findViewById(R.id.imgv);
            viewHolder.tv = (TextView) convertView.findViewById(R.id.tv);
            viewHolder.size = (TextView) convertView.findViewById(R.id.video_size);
            viewHolder.duration = (TextView) convertView.findViewById(R.id.video_time_long);
            convertView.setTag(viewHolder);
            //   }
            initializeViews((BitmapEntity) getItem(position), (ViewHolder) convertView.getTag());
            return convertView;
        }

        private void initializeViews(BitmapEntity object, ViewHolder holder) {
            Log.e("adapter", "file://" + object.getUri_thumb());
            ImageLoader.getInstance().displayImage("file://" + object.getUri_thumb(), holder.imgv);
            holder.tv.setText(object.getName());
            holder.size.setText(TimeChange.bytes2kb(object.getSize()) + "");
            holder.duration.setText(TimeChange.setTime(object.getDuration()));

        }

        protected class ViewHolder {
            private ImageView imgv;
            private TextView tv;
            private TextView size;
            private TextView duration;
        }
    }

第五步:这样就查询到了本地所有视频文件信息,显示在列表里,之前我们是通过startActivityForResult()开启的,所以我们可以在onActivityResult获取到返回的选中的视频信息.代码如下:

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE&& resultCode == RESULT_OK && null != data) {
            String selectedVideo = (String) data.getExtras().get("url");
            File file = new File(selectedVideo);
            //准备上传,显示提示文件
            upLoadVideo(file);
        }
    }

第六步:上传视频文件的方法upLoadVideo(File file):

   //上传视频文件到服务器
    private void upLoadVideo(File file) {
        RequestParams params=new RequestParams(HttpUrl.UP_PHOTO);
        params.addBodyParameter("fileType", "video");
        params.addBodyParameter("filePurpose","broadcastvideo");
        params.addBodyParameter("fkPurposeId", id);
        params.addParameter("uploadFile",file);
        x.http().post(params, new Callback.CommonCallback() {
            @Override
            public void onSuccess(String result) {
                try {
                    JSONObject jsonObject=new JSONObject(result);
                    String errcode = jsonObject.optString("errcode");
                    if ("0".equals(errcode)){
                        ToastUtil.showToast("上传成功!");
                        //刷新界面,重新请求数据
                        queryVideo();
                        adapter.notifyDataSetChanged();
                    }else{
                        ToastUtil.showToast(jsonObject.getString("msg"));
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
            @Override
            public void onError(Throwable ex, boolean isOnCallback) {
                Log.e("4444",ex.getMessage().toString());
            }
            @Override
            public void onCancelled(CancelledException cex) {
            }
            @Override
            public void onFinished() {
            }
        });
    }

最后大概整个视频从本地查找,到选择,再到上传到服务器的整个过程就完成了.