Android多媒体(视频播放器-拍照-录像)

最新推荐文章于 2025-08-14 10:16:47 发布

原创最新推荐文章于 2025-08-14 10:16:47 发布 · 546 阅读

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文章标签：

#android #多媒体 #视频 #音乐

本文详细介绍如何在安卓设备上实现视频播放、拍照与录像等功能。包括使用SurfaceView和VideoView组件进行视频播放，集成媒体控制器，利用Camera API实现拍照功能，以及通过MediaRecorder类完成录像过程。同时提供完整的代码示例和必要的权限配置。

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视频播放器一：

1.布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
android:layout_width="match_parent" android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.asus.android_26_mediaplayer.MainActivity">

<SurfaceView
android:layout_width="match_parent"
android:layout_height="300dp"
android:id="@+id/sv_main_surface"/>

<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/seekbar_main"
/>

<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@android:drawable/ic_media_play"
android:onClick="isPlay"
android:layout_gravity="center_horizontal"
/>

</LinearLayout>

2.MainActivity:
package com.asus.android_26_mediaplayer;

import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.SurfaceView;
import android.view.View;
import android.widget.ImageButton;
import android.widget.SeekBar;

import java.io.IOException;

public class MainActivity extends AppCompatActivity {

private MediaPlayer mediaPlayer;
private SeekBar seekbar_main;
private SurfaceView sv_main_surface;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

seekbar_main = (SeekBar) findViewById(R.id.seekbar_main);

sv_main_surface = (SurfaceView) findViewById(R.id.sv_main_surface);

//给滚动条设置滑动监听事件
seekbar_main.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {

}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
//获取拖动结束时的位置
int progress=seekbar_main.getProgress();
//音乐随滚动条进度进行播放
mediaPlayer.seekTo(progress);
}
});

}

public void isPlay(View view){

final ImageButton imageButton= (ImageButton) view;

if (mediaPlayer==null){
//2.播放sd卡内音乐
mediaPlayer = new MediaPlayer();
//设置类型
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
//设置音源
mediaPlayer.setDataSource(this, Uri.parse("file://mnt/sdcard/Movies/sister.mp4"));
//准备一下
mediaPlayer.prepare();

//将媒体播放器捕捉的视屏展示到SurfaceView
mediaPlayer.setDisplay(sv_main_surface.getHolder());

} catch (IOException e) {
e.printStackTrace();
}

//播放音乐
mediaPlayer.start();

//将播放图标变为暂停图标
imageButton.setImageResource(android.R.drawable.ic_media_pause);

//获取音乐总时长
int duration=mediaPlayer.getDuration();
//设置进度条最大值为音乐总时长
seekbar_main.setMax(duration);

new MyThread().start();

}else if (mediaPlayer.isPlaying()){
//暂停音乐
mediaPlayer.pause();
//将暂停图标变为播放图标
imageButton.setImageResource(android.R.drawable.ic_media_play);
}else {
mediaPlayer.start();
//将播放图标变为暂停图标
imageButton.setImageResource(android.R.drawable.ic_media_pause);
}
}

//写一个线程，让进度条随音乐进度动起来
class MyThread extends Thread{
@Override
public void run() {
super.run();
while (seekbar_main.getProgress()<=seekbar_main.getMax()){
//获取当前音乐播放位置
int currentPosition=mediaPlayer.getCurrentPosition();
//让进度条动起来
seekbar_main.setProgress(currentPosition);
}
}
}

}
3.不要忘记配置权限：

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

视频播放器二：

1.布局文件：
由于引用的系统控制器，所以只需一个VideoView
<?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:id="@+id/activity_video"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.asus.android_26_mediaplayer.VideoActivity">

<VideoView
android:layout_width="match_parent"
android:layout_height="300dp"
android:id="@+id/vv_main_video"/>

</RelativeLayout>

2.VideoActivity:
package com.asus.android_26_mediaplayer;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.MediaController;
import android.widget.VideoView;

public class VideoActivity extends AppCompatActivity {

private VideoView vv_main_video;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_video);

vv_main_video = (VideoView) findViewById(R.id.vv_main_video);

//给VideoView设置播放源
vv_main_video.setVideoPath("file://mnt/sdcard/Movies/sister.mp4");

MediaController controller=new MediaController(this);
vv_main_video.setMediaController(controller);
controller.setMediaPlayer(vv_main_video);
}
}

完成以上步骤即可。

拍照：

1.布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.asus.android_27_camera.MainActivity">

    <SurfaceView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/sv_main_surface"
        android:layout_weight="1"
        />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="拍照"
        android:onClick="photo"
        android:layout_gravity="center_horizontal"
        />

</LinearLayout>

2.MainActivity：

package com.asus.android_27_camera;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

    private SurfaceView sv_main_surface;
    private Camera camera;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        sv_main_surface = (SurfaceView) findViewById(R.id.sv_main_surface);

        //给sv_main_surface添加回调函数
        sv_main_surface.getHolder().addCallback(new SurfaceHolder.Callback() {

            @Override
            public void surfaceCreated(SurfaceHolder holder) {
                //打开照相机
                camera = Camera.open();
                //设置参数
                Camera.Parameters parameters=camera.getParameters();
                //设置照片格式
                parameters.setPictureFormat(PixelFormat.JPEG);
                //设置照片的质量
                parameters.set("jpeg-quality",85);

                camera.setParameters(parameters);
                try {
                    camera.setPreviewDisplay(sv_main_surface.getHolder());
                } catch (IOException e) {
                    e.printStackTrace();
                }

                //开启预览效果
                camera.startPreview();
            }

            @Override
            public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

            }

            @Override
            public void surfaceDestroyed(SurfaceHolder holder) {
                if (camera!=null){
                    camera.stopPreview();
                    camera.release();
                    camera=null;
                }
            }
        });
    }

    public void photo(View view){
        camera.takePicture(null,null, new Camera.PictureCallback() {
            @Override
            public void onPictureTaken(byte[] data, Camera camera) {
                //图片压缩
                Bitmap bitmap=BitmapFactory.decodeByteArray(data,0,data.length);
                //图片压缩路径
                try {
                    FileOutputStream fos=new FileOutputStream("mnt/sdcard/G150820_"+System.currentTimeMillis()+".jpeg");
                    //图片压缩的格式，质量及路径
                    bitmap.compress(Bitmap.CompressFormat.JPEG,85,fos);

                    camera.stopPreview();
                    camera.startPreview();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }
        });
    }

}

3.配置权限

<!-- 打开相机权限 -->
<uses-permission android:name="android.permission.CAMERA" />
<!-- 创建文件权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<!-- 写入内存卡权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

录像（录音）：

1布局文件：

<?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:id="@+id/activity_recorder"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.asus.android_27_camera.RecorderActivity">

    <SurfaceView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/sv_recorder_surface"
        />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="start"
        android:id="@+id/bt_start"
        android:text="开始"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="stop"
        android:layout_below="@+id/bt_start"
        android:text="结束"
        />

</RelativeLayout>

2.RecorderActivity：

package com.asus.android_27_camera;

import android.media.MediaRecorder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.SurfaceView;
import android.view.View;

import java.io.IOException;

public class RecorderActivity extends AppCompatActivity {

    private SurfaceView sv_recorder_surface;
    private MediaRecorder recorder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recorder);

        sv_recorder_surface = (SurfaceView) findViewById(R.id.sv_recorder_surface);

        //实例化媒体录制器
        recorder = new MediaRecorder();
    }

    public void start(View view) throws IOException {
        //从照相机采集视频
        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        //从麦克风采集录音
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);

        //设置格式
        recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

        //设置视频编码方式
        recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
        //设置录音编码方式
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        //设置保存路径
        recorder.setOutputFile("/mnt/sdcard/G150820_"+System.currentTimeMillis()+".mp4");
        //画面展示出来
        recorder.setPreviewDisplay(sv_recorder_surface.getHolder().getSurface());
        //准备
        recorder.prepare();
        //开始录制
        recorder.start();
    }
    public void stop(View view){
        if (recorder!=null){
            recorder.stop();
            recorder.release();;
            recorder=null;
        }
    }

}
3.配置权限：

<!--录音的权限-->
    <uses-permission android:name="android.permission.RECORD_AUDIO"/>