android 本地选择视频上传文件,android 获取本地视频文件 列表

【实例简介】

【实例截图】

【核心代码】

package com.example.local_vedio_list;

import java.util.ArrayList;

import java.util.List;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.content.ContentResolver;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.os.Handler;

import android.provider.MediaStore;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ListView;

import android.widget.Toast;

import android.widget.AdapterView.OnItemClickListener;

/**

* 作者： abao

*/

@SuppressLint("ShowToast")

public class MainActivity extends Activity {

private ListView mListView;

private VideodetailListviewAdapter adapter;

private List bit = new ArrayList();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mListView = (ListView) this.findViewById(R.id.listview);

new Search_photo().start();

}

@SuppressLint("HandlerLeak")

private Handler mHandler = new Handler() {

@SuppressLint("ShowToast")

public void handleMessage(android.os.Message msg) {

if (msg.what == 1&&bit!=null) {

adapter = new VideodetailListviewAdapter(MainActivity.this, bit);

Toast.makeText(MainActivity.this, "视频总数:" bit.size(), 1);

mListView.setAdapter(adapter);

mListView.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView> arg0, View arg1, int arg2, long arg3) {

if(bit.size()!=0){

Intent intent = new Intent(Intent.ACTION_VIEW);

String type = "video/*";

Uri uri = Uri.parse("file://" bit.get(arg2).getUri());

intent.setDataAndType(uri, type);

startActivity(intent);

Toast.makeText(MainActivity.this, bit.get(arg2).getUri(), 1000).show();

System.out.println("sss: " bit.get(arg2).getUri());

}

}

});

}

};

};

/**

*

* 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 = MainActivity.this.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 = (MainActivity.this.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);

}

}

}

}

}