Android开发之视频播放器

企业开发 2023-04-07 01:16:14 阅读次数: 0

Android开发之视频播放器


今天教大家做一个简单的视频播放器hh

一、效果图

在这里插入图片描述

二、build.gradle中导入依赖

  implementation'com.android.support:recyclerview-v7:28.0.0'

三、主布局文件(activity_video)

在这里插入图片描述

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white">
    <TextView
        android:text="中医药视频"
        android:textColor="#00007f"
        android:textSize="40sp"
        android:textStyle="bold"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
</LinearLayout>

四、布局文件(video_item)

在这里插入图片描述

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="horizontal"
    android:layout_height="wrap_content">
    <ImageView
        android:src="@drawable/sp2"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_marginLeft="5dp"
        android:layout_marginTop="5dp"/>
    <TextView
        android:id="@+id/video_name"
        android:text="视频的名字"
        android:textColor="#000000"
        android:textSize="25sp"
        android:textStyle="bold"
        android:layout_gravity="center"
        android:layout_marginLeft="5dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>

五、布局文件(activity_play)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white">
    <include layout="@layout/main_title_bar"/>
    <TextView
        android:id="@+id/my_videoname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="视频名称"
        android:textStyle="bold"
        android:textSize="30sp"
        android:textColor="#00008F"
        android:layout_gravity="center"
        android:layout_marginTop="30dp"/>
    <VideoView
        android:layout_width="match_parent"
        android:layout_height="400dp"
        android:id="@+id/my_videoview"/>
</LinearLayout>

六、布局文件(main_title_bar)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/title_bar"
    android:layout_width="match_parent"
    android:layout_height="45dp"
    android:background="@android:color/transparent">

    <TextView
        android:id="@+id/tv_back"
        android:layout_width="45dp"
        android:layout_height="45dp"
        android:layout_alignParentLeft="true"
        android:background="@drawable/go_back_selector" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv_main_title"
        android:textColor="@android:color/white"
        android:textSize="20sp"
        android:text="@string/tingyilundao"
        android:textStyle="bold"
        android:layout_centerInParent="true"/>
    <TextView
        android:id="@+id/tv_save"
        android:layout_width="wrap_content"
        android:layout_height="35dp"
        android:layout_alignParentRight="true"
        android:layout_marginTop="10dp"
        android:layout_marginRight="20dp"
        android:layout_centerVertical="true"
        android:gravity="center"
        android:textSize="20sp"
        android:textColor="@android:color/white"
        android:text="@string/btn_save"
        android:visibility="gone" />
    <!--通过android:visibility="gone”属性，将TextView控件设置为隐藏状态-->

</RelativeLayout>

七、java文件(VideoActivity)

package com.example.activity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;

import com.example.R;
import com.example.adapter.VideoAdapter;
import com.example.bean.Video;

import java.util.ArrayList;
import java.util.List;
public class VideoActivity extends AppCompatActivity {
    
    
    //定义对象
    RecyclerView recyclerView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_video);
        initView();//控件初始化
        initData();//数据初始化
    }
    private void initView() {
    
    
        recyclerView=findViewById(R.id.recyclerview);
    }
    private void initData() {
    
    
        //准备视频数据
        List<Video> videolist=new ArrayList<>();
        Video firstvideo=new Video("科学","http://vfx.mtime.cn/Video/2019/03/19/mp4/190319222227698228.mp4");
        videolist.add(firstvideo);
        Video secondvideo=new Video("护佑生命的脊梁","android.resource://"+getPackageName()+"/"+R.raw.sp1);
        videolist.add(secondvideo);
        //2、本工程中的视频
        Video thirdvideo=new Video("故事","android.resource://"+getPackageName()+"/"+R.raw.sp2);
        videolist.add(thirdvideo);
        Video fourthvideo=new Video("宣传片","android.resource://"+getPackageName()+"/"+R.raw.sp3);
        videolist.add(fourthvideo);
        Video fifthvideo=new Video("如何治疗高血压","android.resource://"+getPackageName()+"/"+R.raw.sp4);
        videolist.add(fifthvideo);
        Video sixthvideo=new Video("寻春","android.resource://"+getPackageName()+"/"+R.raw.sp5);
        videolist.add(sixthvideo);
        Video seventhvideo=new Video("宣传片","android.resource://"+getPackageName()+"/"+R.raw.sp6);
        videolist.add(seventhvideo);
        Video eighthvideo=new Video("宣传片","android.resource://"+getPackageName()+"/"+R.raw.sp7);
        videolist.add(eighthvideo);
        Video ninthvideo=new Video("中华抗击疫情","android.resource://"+getPackageName()+"/"+R.raw.sp8);
        videolist.add(ninthvideo);
        Video eleventhvideo=new Video("宣传片","android.resource://"+getPackageName()+"/"+R.raw.sp9);
        videolist.add(eleventhvideo);
        Video twelfthvideo=new Video("我们","android.resource://"+getPackageName()+"/"+R.raw.sp11);
        videolist.add(twelfthvideo);
        Video thirteenthvideo=new Video("宣传","android.resource://"+getPackageName()+"/"+R.raw.sp12);
        videolist.add(thirteenthvideo);
        Video fourteenthvideo=new Video("宣传","android.resource://"+getPackageName()+"/"+R.raw.sp13);
        videolist.add(fourteenthvideo);
        Video fifteenthvideo=new Video("药方","android.resource://"+getPackageName()+"/"+R.raw.sp14);
        videolist.add(fifteenthvideo);
        Video sixteenthvideo=new Video("国际化","android.resource://"+getPackageName()+"/"+R.raw.sp15);
        videolist.add(sixteenthvideo);
        //适配器
        VideoAdapter adapter=new VideoAdapter(videolist);
        //让数据显示到 recyclerview 控件上
        StaggeredGridLayoutManager layoutManager=new StaggeredGridLayoutManager(1,StaggeredGridLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(adapter);

    }

}

八、VideoAdapter

package com.example.adapter;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.R;
import com.example.activity.PlayActivity;
import com.example.bean.Video;

import java.util.List;
public class VideoAdapter extends
        RecyclerView.Adapter<VideoAdapter.ViewHolder> {
    
    
    private List<Video> videolist;

    public VideoAdapter(List<Video> videolist) {
    
    
        this.videolist = videolist;
    }
    //方法 1：用于创建 ViewHolder 实例
    @NonNull
    @Override
    public VideoAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    
    
        View view=LayoutInflater.from(parent.getContext()).inflate(R.layout.video_item,parent,false);
        final ViewHolder holder=new ViewHolder(view);
        holder.videoview.setOnClickListener(new View.OnClickListener() {
    
    
            @Override
            public void onClick(View view) {
    
    
                //单击任意视频跳转到播放界面
                int position=holder.getAdapterPosition();
                Video video =videolist.get(position);
                String myvideoname=video.getVideoName();
                String myvideoUrl=video.getVideoUrl();
                Intent intent=new Intent(view.getContext(),PlayActivity.class);
                intent.putExtra("videoname",myvideoname);
                intent.putExtra("videourl",myvideoUrl);
                view.getContext().startActivity(intent);
            }
        });
        return holder;
    }
    //方法 2：用于对 Recyclerview 中子项的数据进行赋值的
    @Override
    public void onBindViewHolder(@NonNull VideoAdapter.ViewHolder holder, int position) {
    
    
        Video video=videolist.get(position);
        holder.video_name.setText(video.getVideoName());
    }
    //方法 3：返回 Recyclerview 中数据源长度
    @Override
    public int getItemCount() {
    
    
        return videolist.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
    
    
        TextView video_name;
        View videoview;
        public ViewHolder(@NonNull View view) {
    
    
            super(view);
            video_name=view.findViewById(R.id.video_name);
            videoview=view;
        }
    }
}

九、PlayActivity

package com.example.activity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.MediaController;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.VideoView;

import androidx.appcompat.app.AppCompatActivity;

import com.example.R;
public class PlayActivity extends AppCompatActivity {
    
    
    //定义对象
    private TextView my_videoname;
    private VideoView my_videoview; //视频播放器
    private MediaController mediaController;//定义媒体控制柄
    private TextView tv_main_title;//标题
    private TextView tv_back;		//返回按钮
    private RelativeLayout rl_title_bar;//标题布局
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_play);
        initView();//控件初始化
        initData();//数据初始化
    }

    private void initView() {
    
    
        my_videoname=findViewById(R.id.my_videoname);
        my_videoview=findViewById(R.id.my_videoview);
        mediaController=new MediaController(this);
        tv_main_title=(TextView)findViewById(R.id.tv_main_title);
        tv_main_title.setText("视频");
        rl_title_bar = (RelativeLayout) findViewById(R.id.title_bar);
        tv_back = ((TextView) findViewById(R.id.tv_back));
        rl_title_bar.setBackgroundColor(Color.parseColor("#30b4ff"));
        //返回按钮的点击事件
        tv_back.setOnClickListener(new View.OnClickListener() {
    
    

            @Override
            public void onClick(View arg0) {
    
    
                // TODO Auto-generated method stub
                PlayActivity.this.finish();
            }
        });
    }
    private void initData() {
    
    
        //1、获取从音乐列表传过来的视频名称和视频地址
        String myvideoname=getIntent().getStringExtra("videoname");
        String myvideourl=getIntent().getStringExtra("videourl");
        //2、将视频名称显示在文本框中，将视频地址关联到播放器中
        my_videoname.setText(myvideoname);
        my_videoview.setVideoPath(myvideourl);
        //视频播放器和媒体控制柄关联起来
        my_videoview.setMediaController(mediaController);
        //媒体控制柄和视频播放器关联起来
        mediaController.setMediaPlayer(my_videoview);
        //3、启动视频播放器播放视频
        my_videoview.start();
    }
}

十、Video

package com.example.bean;
public class Video {
    
    
    private String videoName;
    private String videoUrl;
    public String getVideoName() {
    
    
        return videoName;
    }

    public String getVideoUrl() {
    
    
        return videoUrl;
    }

    public Video(String videoName, String videoUrl) {
    
    
        this.videoName = videoName;
        this.videoUrl = videoUrl;
    }
}

十二、res文件夹下新建raw文件夹，将准备好的视频导入进去。注意：视频名称统一为sp+数字(从0开始一次增加),扩展名为.mp4。

在这里插入图片描述

十三、在AndroidManifest.xml中申请权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" 
 tools:ignore="ProtectedPermissions" />
<uses-permission android:name="android.permission.INTERNET"/>

十四、资源下载地址：Android开发之视频播放器

至此，结束！

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