Android原生视频播放VideoView的使用

<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=".mainactivity">
 
 <videoview
  android:id="@+id/videoview"
  android:layout_width="match_parent"
  android:layout_height="match_parent" />
 <progressbar
  android:id="@+id/progressbar"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_centerinparent="true" />
</relativelayout>

package com.example.administrator.main;
 
import android.content.intent;
import android.media.mediaplayer;
import android.net.uri;
import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.util.displaymetrics;
import android.view.motionevent;
import android.view.view;
import android.widget.mediacontroller;
import android.widget.progressbar;
import android.widget.relativelayout;
import android.widget.videoview;
 
public class videoactivity extends appcompatactivity {
 private progressbar progressbar;
 private videoview videoview;
 private mediacontroller mediacontroller;
 private int intpositionwhenpause = -1;
 
 @override
 protected void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_video);
 
  //调用系统自带视频播放或者安装的第三方播放器
//  uri uri=uri.parse("http://vd3.bdstatic.com/mda-ig4tp6gnqwu5we8i/mda-ig4tp6gnqwu5we8i.mp4");
//  intent intent=new intent(intent.action_view);
//  intent.setdataandtype(uri,"video/*");
//  startactivity(intent);
 
  initvideoview();
 }
 
 /**
  * 初始化videoview播放
  */
 public void initvideoview() {
  //初始化进度条
  progressbar = (progressbar) findviewbyid(r.id.progressbar);
  //初始化videoview
  videoview = (videoview) findviewbyid(r.id.videoview);
  //初始化videoview控制条
  mediacontroller = new mediacontroller(this);
  //设置videoview的控制条
  videoview.setmediacontroller(mediacontroller);
  //设置显示控制条
  mediacontroller.show(0);
  //设置播放完成以后监听
  videoview.setoncompletionlistener(new mediaplayer.oncompletionlistener() {
   @override
   public void oncompletion(mediaplayer mp) {
 
   }
  });
  //设置发生错误监听，如果不设置videoview会向用户提示发生错误
  videoview.setonerrorlistener(new mediaplayer.onerrorlistener() {
   @override
   public boolean onerror(mediaplayer mp, int what, int extra) {
    return false;
   }
  });
  //设置在视频文件在加载完毕以后的回调函数
  videoview.setonpreparedlistener(new mediaplayer.onpreparedlistener() {
   @override
   public void onprepared(mediaplayer mp) {
    progressbar.setvisibility(view.gone);
    videoview.start();
   }
  });
  //设置videoview的点击监听
  videoview.setontouchlistener(new view.ontouchlistener() {
   @override
   public boolean ontouch(view v, motionevent event) {
    return false;
   }
  });
  //设置网络视频路径
  uri uri = uri.parse("http://vd3.bdstatic.com/mda-ig4tp6gnqwu5we8i/mda-ig4tp6gnqwu5we8i.mp4");
  videoview.setvideouri(uri);
  //设置为全屏模式播放
  setvideoviewlayoutparams(2);
 }
 
 /**
  * 设置videiview的全屏和窗口模式
  *
  * @param paramstype 标识 1为全屏模式 2为窗口模式
  */
 public void setvideoviewlayoutparams(int paramstype) {
  //全屏模式
  if (1 == paramstype) {
   //设置充满整个父布局
   relativelayout.layoutparams layoutparams = new relativelayout.layoutparams(relativelayout.layoutparams.match_parent, relativelayout.layoutparams.match_parent);
   //设置相对于父布局四边对齐
   layoutparams.addrule(relativelayout.align_parent_bottom);
   layoutparams.addrule(relativelayout.align_parent_top);
   layoutparams.addrule(relativelayout.align_parent_left);
   layoutparams.addrule(relativelayout.align_parent_right);
   //为videoview添加属性
   videoview.setlayoutparams(layoutparams);
  } else {
   //窗口模式
   //获取整个屏幕的宽高
   displaymetrics displaymetrics = new displaymetrics();
   this.getwindowmanager().getdefaultdisplay().getmetrics(displaymetrics);
   //设置窗口模式距离边框50
   int videoheight = displaymetrics.heightpixels;
   int videowidth = displaymetrics.widthpixels;
   relativelayout.layoutparams layoutparams = new relativelayout.layoutparams(videowidth, videoheight);
   //设置居中
   layoutparams.addrule(relativelayout.align_top);
   //为videoview添加属性
   videoview.setlayoutparams(layoutparams);
  }
 }
 
 /**
  * 页面暂停效果处理
  */
 @override
 protected void onpause() {
  super.onpause();
  //如果当前页面暂停则保存当前播放位置，全局变量保存
  intpositionwhenpause = videoview.getcurrentposition();
  //停止回放视频文件
  videoview.stopplayback();
 }
 
 /**
  * 页面从暂停中恢复
  */
 @override
 protected void onresume() {
  super.onresume();
  //跳转到暂停时保存的位置
  if (intpositionwhenpause >= 0) {
   videoview.seekto(intpositionwhenpause);
   //初始播放位置
   intpositionwhenpause = -1;
  }
 }
}