Android 系统简单播放器_android简易的播放器-优快云博客

本文介绍了一个基于Android平台的视频播放器应用实现方法，包括如何从设备中读取视频文件并显示在列表中，以及使用自定义播放器进行视频播放的过程。

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MainActivity

package com.mirrorlacation.player;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.text.format.Formatter;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import java.util.ArrayList;

public class MainActivity extends Activity {

    private VedioBean vedioBean;
    private TextView no_player;
    private ListView playerlist;
    private ArrayList<VedioBean> playerData;
    private Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {

            //有视频
            if(null!=playerData&&playerData.size()>0){
                no_player.setVisibility(View.GONE);
                playerlist.setAdapter(new DownAdapterter());
                playerlist.setOnItemClickListener(itemclick);
            }else{
                //无视频
                no_player.setVisibility(View.VISIBLE);
            }
        }
    };
    AdapterView.OnItemClickListener itemclick=new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String address= playerData.get(position).getData();

            //把手机里的所有播放器调起来
//            Intent intent=new Intent();
//            intent.setAction(Intent.ACTION_VIEW);
//            intent.setDataAndType(Uri.parse(address),"video/*");
//            startActivity(intent);

            //调用自己播放器
            Intent intent=new Intent(MainActivity.this,VideoPlayerActivity.class);
            intent.setData(Uri.parse(address));
            startActivity(intent);
        }
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        init();
        indata();
    }
    private void init() {
        no_player= (TextView) this.findViewById(R.id.no_player);
        playerlist = (ListView) this.findViewById(R.id.playerlist);
    }
    //扫描获取本地的视频
    private void indata() {

        playerData=new ArrayList<VedioBean>();
        new Thread(new Runnable() {
            @Override
            public void run() {
                //系统中 data/data/com.android.providers.media/databases下：
                // external.data（外部路径）     internal.data（手机内部路径）
                //得到外部视频路径.
                Uri url= MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                String []projection={
                        MediaStore.Video.Media.DISPLAY_NAME,//视频的名字
                        MediaStore.Video.Media.DURATION, //视频的时长
                         MediaStore.Video.Media.SIZE,   //视频的大小
                        MediaStore.Video.Media.DATA   //视频在SDCard下的绝对路径
                };
                Cursor cursor=getContentResolver().query(url,projection,null,null,null);
                while(cursor.moveToNext()){
                    vedioBean= new VedioBean();
                    String name=cursor.getString(0);
                    vedioBean.setName(name);
                    long duration=cursor.getLong(1);
                    vedioBean.setDuration(duration);
                    long size=cursor.getLong(2);
                    vedioBean.setSize(size);
                    String data=cursor.getString(3);
                    vedioBean.setData(data);
                    playerData.add(vedioBean);
                }
                cursor.close();
                handler.sendEmptyMessage(0);
            }
        }).start();
    }

    class DownAdapterter extends BaseAdapter {

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

        @Override
        public Object getItem(int position) {
            return playerData.get(position);
        }

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

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            ViewHold viewHold;
            if(convertView==null){
                viewHold=new ViewHold();
                convertView=View.inflate(MainActivity.this,R.layout.plaeriten,null);

                viewHold.p_name= (TextView) convertView.findViewById(R.id.p_name);
                viewHold.p_size= (TextView) convertView.findViewById(R.id.p_size);
                viewHold.p_big= (TextView) convertView.findViewById(R.id.p_big);

                convertView.setTag(viewHold);
            }else{
                viewHold= (ViewHold) convertView.getTag();
            }
            final VedioBean msg=playerData.get(position);
            viewHold.p_name.setText(msg.getName());
            //Formatter.formatFileSize  Byte Kb Mb Gb自动转换
            viewHold.p_big.setText(Formatter.formatFileSize(MainActivity.this,msg.getSize()));
            viewHold.p_size.setText(formatTime(msg.getDuration()));


            return convertView;
        }

    }
    static class ViewHold{
        TextView p_name;
        TextView p_size;
        TextView p_big;
    }
    //毫秒转时间
    public static String formatTime(Long ms) {
        Integer ss = 1000;
        Integer mi = ss * 60;
        Integer hh = mi * 60;
        Integer dd = hh * 24;

        Long day = ms / dd;
        Long hour = (ms - day * dd) / hh;
        Long minute = (ms - day * dd - hour * hh) / mi;
        Long second = (ms - day * dd - hour * hh - minute * mi) / ss;
        Long milliSecond = ms - day * dd - hour * hh - minute * mi - second * ss;

        StringBuffer sb = new StringBuffer();
        if(day > 0) {
            sb.append(day+"天");
        }
        if(hour > 0) {
            sb.append(hour+"小时");
        }
        if(minute > 0) {
            sb.append(minute+"分");
        }
        if(second > 0) {
            sb.append(second+"秒");
        }
        if(milliSecond > 0) {
            sb.append(milliSecond+"毫秒");
        }
        return sb.toString();
    }
}

VideoPlayerActivity

package com.mirrorlacation.player;

import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;

public class    VideoPlayerActivity extends AppCompatActivity {

    private  VideoView videoview;
    private Uri uri;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_video_player);

        videoview= (VideoView) findViewById(R.id.videoview);
        uri=getIntent().getData();
        videoview.setVideoURI(uri);

        //播放准备
        videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                videoview.start();
            }
        });
        videoview.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                Toast.makeText(VideoPlayerActivity.this, "播放完成", Toast.LENGTH_SHORT).show();
                VideoPlayerActivity.this.finish();
            }
        });
        videoview.setOnErrorListener(new MediaPlayer.OnErrorListener() {
            @Override
            public boolean onError(MediaPlayer mp, int what, int extra) {
                Toast.makeText(VideoPlayerActivity.this, "播放错误", Toast.LENGTH_SHORT).show();
                return true;
            }
        });
        //控制面板
        videoview.setMediaController(new MediaController(this));
    }
}

activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.mirrorlacation.player.MainActivity">

    <TextView
        android:id="@+id/no_player"
        android:textSize="20sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:visibility="gone"
        android:text="没有视频!"/>
    <ListView
        android:id="@+id/playerlist"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
</RelativeLayout>

activity_video_player.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    tools:context="com.mirrorlacation.player.VideoPlayerActivity">

    <VideoView
        android:id="@+id/videoview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>