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java制作仿微信录制小视频控件

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本文为用 MediaRecorder 录制小视频的控件,可以设置视频录制的时间、空间大小、初始时是否打开摄像头等。 此控件为组合控件,继承自 LinearLayout ,为防止出错,需实现 android.media.MediaRecorder.OnErrorListener 接口.

小视频录制界面 。

java制作仿微信录制小视频控件

MovieRecorderView.java 。

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import java.io.File;
import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;
 
import android.content.Context;
import android.content.res.TypedArray;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.media.MediaRecorder;
import android.media.MediaRecorder.AudioEncoder;
import android.media.MediaRecorder.AudioSource;
import android.media.MediaRecorder.OnErrorListener;
import android.media.MediaRecorder.OutputFormat;
import android.media.MediaRecorder.VideoEncoder;
import android.media.MediaRecorder.VideoSource;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
 
import com.contron.dgyj.R;
import com.contron.dgyj.common.Globals;
import com.contron.dgyj.im.ImGlobal;
import com.lidroid.xutils.util.LogUtils;
 
/**
  * 视频播放控件
  *
  * @author liuyinjun
  *
  * @date 2015-2-5
  */
public class MovieRecorderView extends LinearLayout implements OnErrorListener {
 
   private SurfaceView mSurfaceView;
   private SurfaceHolder mSurfaceHolder;
   private ProgressBar mProgressBar;
 
   private MediaRecorder mMediaRecorder;
   private Camera mCamera;
   private Timer mTimer; // 计时器
   private OnRecordFinishListener mOnRecordFinishListener; // 录制完成回调接口
 
   private int mWidth; // 视频分辨率宽度
   private int mHeight; // 视频分辨率高度
   private boolean isOpenCamera; // 是否一开始就打开摄像头
   private int mRecordMaxTime; // 一次拍摄最长时间
   private int mTimeCount; // 时间计数
   private File mVecordFile = null ; // 文件
 
   public MovieRecorderView(Context context) {
     this (context, null );
   }
 
   public MovieRecorderView(Context context, AttributeSet attrs) {
     this (context, attrs, 0 );
   }
 
   public MovieRecorderView(Context context, AttributeSet attrs, int defStyle) {
     super (context, attrs, defStyle);
 
     TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.MovieRecorderView, defStyle, 0 );
     mWidth = a.getInteger(R.styleable.MovieRecorderView_width, 320 ); // 默认320
     mHeight = a.getInteger(R.styleable.MovieRecorderView_height, 240 ); // 默认240
 
     isOpenCamera = a.getBoolean(R.styleable.MovieRecorderView_is_open_camera, true ); // 默认打开
     mRecordMaxTime = a.getInteger(R.styleable.MovieRecorderView_record_max_time, 10 ); // 默认为10
 
     LayoutInflater.from(context).inflate(R.layout.movie_recorder_view, this );
     mSurfaceView = (SurfaceView) findViewById(R.id.surfaceview);
     mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
     mProgressBar.setMax(mRecordMaxTime); // 设置进度条最大量
 
     mSurfaceHolder = mSurfaceView.getHolder();
     mSurfaceHolder.addCallback( new CustomCallBack());
     mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
 
     a.recycle();
   }
 
   /**
    *
    * @author liuyinjun
    *
    * @date 2015-2-5
    */
   private class CustomCallBack implements Callback {
 
     @Override
     public void surfaceCreated(SurfaceHolder holder) {
       if (!isOpenCamera)
         return ;
       try {
         initCamera();
       } catch (IOException e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
       }
     }
 
     @Override
     public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
 
     }
 
     @Override
     public void surfaceDestroyed(SurfaceHolder holder) {
       if (!isOpenCamera)
         return ;
       freeCameraResource();
     }
 
   }
 
   /**
    * 初始化摄像头
    *
    * @author liuyinjun
    * @date 2015-2-5
    * @throws IOException
    */
   private void initCamera() throws IOException {
     if (mCamera != null ) {
       freeCameraResource();
     }
     try {
       mCamera = Camera.open();
     } catch (Exception e) {
       e.printStackTrace();
       freeCameraResource();
     }
     if (mCamera == null )
       return ;
 
     setCameraParams();
     mCamera.setDisplayOrientation( 90 );
     mCamera.setPreviewDisplay(mSurfaceHolder);
     mCamera.startPreview();
     mCamera.unlock();
   }
 
   /**
    * 设置摄像头为竖屏
    *
    * @author liuyinjun
    * @date 2015-2-5
    */
   private void setCameraParams() {
     if (mCamera != null ) {
       Parameters params = mCamera.getParameters();
       params.set( "orientation" , "portrait" );
       mCamera.setParameters(params);
     }
   }
 
   /**
    * 释放摄像头资源
    *
    * @author liuyinjun
    * @date 2015-2-5
    */
   private void freeCameraResource() {
     if (mCamera != null ) {
       mCamera.setPreviewCallback( null );
       mCamera.stopPreview();
       mCamera.lock();
       mCamera.release();
       mCamera = null ;
     }
   }
 
   private void createRecordDir() {
     File sampleDir = new File(Environment.getExternalStorageDirectory() + File.separator + "im/video/" );
     if (!sampleDir.exists()) {
       sampleDir.mkdirs();
     }
     File vecordDir = sampleDir;
     // 创建文件
     try {
       mVecordFile = File.createTempFile( "recording" , ".mp4" , vecordDir); //mp4格式
       LogUtils.i(mVecordFile.getAbsolutePath());
     } catch (IOException e) {
     }
   }
 
   /**
    * 初始化
    *
    * @author liuyinjun
    * @date 2015-2-5
    * @throws IOException
    */
   private void initRecord() throws IOException {
     mMediaRecorder = new MediaRecorder();
     mMediaRecorder.reset();
     if (mCamera != null )
       mMediaRecorder.setCamera(mCamera);
     mMediaRecorder.setOnErrorListener( this );
     mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
     mMediaRecorder.setVideoSource(VideoSource.CAMERA); // 视频源
     mMediaRecorder.setAudioSource(AudioSource.MIC); // 音频源
     mMediaRecorder.setOutputFormat(OutputFormat.MPEG_4); // 视频输出格式
     mMediaRecorder.setAudioEncoder(AudioEncoder.AMR_NB); // 音频格式
     mMediaRecorder.setVideoSize(mWidth, mHeight); // 设置分辨率:
     // mMediaRecorder.setVideoFrameRate(16);// 这个我把它去掉了,感觉没什么用
     mMediaRecorder.setVideoEncodingBitRate( 1 * 1024 * 512 ); // 设置帧频率,然后就清晰了
     mMediaRecorder.setOrientationHint( 90 ); // 输出旋转90度,保持竖屏录制
     mMediaRecorder.setVideoEncoder(VideoEncoder.MPEG_4_SP); // 视频录制格式
     // mediaRecorder.setMaxDuration(Constant.MAXVEDIOTIME * 1000);
     mMediaRecorder.setOutputFile(mVecordFile.getAbsolutePath());
     mMediaRecorder.prepare();
     try {
       mMediaRecorder.start();
     } catch (IllegalStateException e) {
       e.printStackTrace();
     } catch (RuntimeException e) {
       e.printStackTrace();
     } catch (Exception e) {
       e.printStackTrace();
     }
   }
 
   /**
    * 开始录制视频
    *
    * @author liuyinjun
    * @date 2015-2-5
    * @param fileName
    *      视频储存位置
    * @param onRecordFinishListener
    *      达到指定时间之后回调接口
    */
   public void record( final OnRecordFinishListener onRecordFinishListener) {
     this .mOnRecordFinishListener = onRecordFinishListener;
     createRecordDir();
     try {
       if (!isOpenCamera) // 如果未打开摄像头,则打开
         initCamera();
       initRecord();
       mTimeCount = 0 ; // 时间计数器重新赋值
       mTimer = new Timer();
       mTimer.schedule( new TimerTask() {
 
         @Override
         public void run() {
           // TODO Auto-generated method stub
           mTimeCount++;
           mProgressBar.setProgress(mTimeCount); // 设置进度条
           if (mTimeCount == mRecordMaxTime) { // 达到指定时间,停止拍摄
             stop();
             if (mOnRecordFinishListener != null )
               mOnRecordFinishListener.onRecordFinish();
           }
         }
       }, 0 , 1000 );
     } catch (IOException e) {
       e.printStackTrace();
     }
   }
 
   /**
    * 停止拍摄
    *
    * @author liuyinjun
    * @date 2015-2-5
    */
   public void stop() {
     stopRecord();
     releaseRecord();
     freeCameraResource();
   }
 
   /**
    * 停止录制
    *
    * @author liuyinjun
    * @date 2015-2-5
    */
   public void stopRecord() {
     mProgressBar.setProgress( 0 );
     if (mTimer != null )
       mTimer.cancel();
     if (mMediaRecorder != null ) {
       // 设置后不会崩
       mMediaRecorder.setOnErrorListener( null );
       mMediaRecorder.setPreviewDisplay( null );
       try {
         mMediaRecorder.stop();
       } catch (IllegalStateException e) {
         e.printStackTrace();
       } catch (RuntimeException e) {
         e.printStackTrace();
       } catch (Exception e) {
         e.printStackTrace();
       }
     }
   }
 
   /**
    * 释放资源
    *
    * @author liuyinjun
    * @date 2015-2-5
    */
   private void releaseRecord() {
     if (mMediaRecorder != null ) {
       mMediaRecorder.setOnErrorListener( null );
       try {
         mMediaRecorder.release();
       } catch (IllegalStateException e) {
         e.printStackTrace();
       } catch (Exception e) {
         e.printStackTrace();
       }
     }
     mMediaRecorder = null ;
   }
 
   public int getTimeCount() {
     return mTimeCount;
   }
 
   /**
    * @return the mVecordFile
    */
   public File getmVecordFile() {
     return mVecordFile;
   }
 
   /**
    * 录制完成回调接口
    *
    * @author liuyinjun
    *
    * @date 2015-2-5
    */
   public interface OnRecordFinishListener {
     public void onRecordFinish();
   }
 
   @Override
   public void onError(MediaRecorder mr, int what, int extra) {
     try {
       if (mr != null )
         mr.reset();
     } catch (IllegalStateException e) {
       e.printStackTrace();
     } catch (Exception e) {
       e.printStackTrace();
     }
   }
}

movie_recorder_view.xml 。

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<? 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:layout_width = "match_parent"
   android:layout_height = "match_parent"
   android:background = "@android:color/background_dark"
   android:orientation = "vertical" >
 
   < SurfaceView
      android:id = "@+id/surfaceview"
      android:layout_width = "fill_parent"
      android:layout_height = "0dp"
      android:layout_weight = "1"
      />
 
   < ProgressBar
     android:id = "@+id/progressBar"
     style = "?android:attr/progressBarStyleHorizontal"
     android:layout_width = "match_parent"
     android:layout_height = "2dp"
     />
   
</ LinearLayout >

attrs.xml 。

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<? 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:layout_width = "match_parent"
   android:layout_height = "match_parent"
   android:background = "@android:color/background_dark"
   android:orientation = "vertical" >
 
   < SurfaceView
      android:id = "@+id/surfaceview"
      android:layout_width = "fill_parent"
      android:layout_height = "0dp"
      android:layout_weight = "1"
      />
 
   < ProgressBar
     android:id = "@+id/progressBar"
     style = "?android:attr/progressBarStyleHorizontal"
     android:layout_width = "match_parent"
     android:layout_height = "2dp"
     />
   
</ LinearLayout >

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