android中videoView的使用

最新推荐文章于 2025-06-11 16:35:06 发布

louiscarman

最新推荐文章于 2025-06-11 16:35:06 发布

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本文链接：https://blog.youkuaiyun.com/louiscarman/article/details/8819994

本文介绍了一个基于Android平台的视频播放器示例应用。该应用使用VideoView组件实现视频播放功能，并通过按钮控制视频的播放、暂停、重置及停止。此外，还实现了从网络下载视频文件的功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

package com.example.androidapi.media;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.URLUtil;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;

import com.example.androidapi.R;

public class VideoViewDemo extends Activity {

	private String current; 
	private String path = "http://daily3gp.com/vids/747.3gp";
    private VideoView mVideoView;
    private Button btnstart,btnpause,btnreset,btnstop;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.videoview);
        btnstart = (Button)findViewById(R.id.videostart);
        btnpause = (Button)findViewById(R.id.videopause);
        btnreset = (Button)findViewById(R.id.videoreset);
        btnstop = (Button)findViewById(R.id.videostop);
        mVideoView = (VideoView) findViewById(R.id.surface_view);  
        btnstart.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				playVideo();  
			}
		});
        btnpause.setOnClickListener(new OnClickListener() {
	   		
	   		@Override
	   		public void onClick(View v) {
	   			if (mVideoView != null) {  
                    mVideoView.pause();  
                } 
	   		}
	   	});
        btnreset.setOnClickListener(new OnClickListener() {
	   		
	   		@Override
	   		public void onClick(View v) {
	   			if (mVideoView != null) {  
                    mVideoView.seekTo(0);  
                }  
	   		}
	   	});
        btnstop.setOnClickListener(new OnClickListener() {
	   		
	   		@Override
	   		public void onClick(View v) {
		   		 if (mVideoView != null) {  
	                 current = null;  
	                 mVideoView.stopPlayback();  
	             }
	   		}
	    });
    }
    
    private void playVideo() {  
        try {  
            if (path == null || path.length() == 0) {  
                Toast.makeText(VideoViewDemo.this, "File URL/path is empty",  
                        Toast.LENGTH_LONG).show();  
            } else {  
                if (path.equals(current) && mVideoView != null) {  
                    mVideoView.start();  
                    mVideoView.requestFocus();  
                    return;  
                }  
                current = path;  
                mVideoView.setVideoPath(getDataSource(path));  
                mVideoView.setMediaController(new MediaController(this));
                mVideoView.start();  
                mVideoView.requestFocus();  
            }  
        } catch (Exception e) {  
            if (mVideoView != null) {  
                mVideoView.stopPlayback();  
            }  
        }  
    }  
    //下载视频
    private String getDataSource(String path) throws IOException {  
        if (!URLUtil.isNetworkUrl(path)) {  
            return path;  
        } else {  
            URL url = new URL(path);  
            URLConnection cn = url.openConnection();  
            cn.connect();  
            InputStream stream = cn.getInputStream();  
            if (stream == null)  
                throw new RuntimeException("stream is null");  
            File temp = File.createTempFile("mediaplayertmp", "dat");  
            temp.deleteOnExit();  
            String tempPath = temp.getAbsolutePath();  
            FileOutputStream out = new FileOutputStream(temp);  
            byte buf[] = new byte[128];  
            do {  
                int numread = stream.read(buf);  
                if (numread <= 0)  
                    break;  
                out.write(buf, 0, numread);  
            } while (true);  
            try {  
                stream.close();  
            } catch (IOException ex) {  
               ex.printStackTrace();
            }  
            return tempPath;  
        }  
    }  
}