你的位置:首页 > 操作系统

[操作系统]Android仿微信拍摄短视频


近期做项目需要添加上传短视频功能,功能设置为类似于微信,点击开始拍摄,设置最长拍摄时间,经过研究最终实现了这个功能,下面就和大家分享一下,希望对你有帮助。

1.视频录制自定义控件:

/** * 视频播放控件 */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);  }  @SuppressLint("NewApi")  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();  }  /**   *   */  private class CustomCallBack implements Callback {    @Override    public void surfaceCreated(SurfaceHolder holder) {      if (!isOpenCamera)        return;      try {        initCamera();      } catch (IOException e) {        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   */  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   */  private void setCameraParams() {    if (mCamera != null) {      Parameters params = mCamera.getParameters();      params.set("orientation", "portrait");      mCamera.setParameters(params);    }  }  /**   * 释放摄像头资源   */  private void freeCameraResource() {    if (mCamera != null) {      mCamera.setPreviewCallback(null);      mCamera.stopPreview();      mCamera.lock();      mCamera.release();      mCamera = null;    }  }  private void createRecordDir() {    //录制的视频保存文件夹    File sampleDir = new File(Environment.getExternalStorageDirectory()        + File.separator + "ysb/video/");//录制视频的保存地址    if (!sampleDir.exists()) {      sampleDir.mkdirs();    }    File vecordDir = sampleDir;    // 创建文件    try {      mVecordFile = File.createTempFile("recording", ".mp4", vecordDir);// mp4格式的录制的视频文件    } catch (IOException e) {      e.printStackTrace();    }  }  /**   * 初始化   * @throws IOException   */  @SuppressLint("NewApi")  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 * 1024 * 100);// 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   * @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() {          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   */  public void stop() {    stopRecord();    releaseRecord();    freeCameraResource();  }  /**   * 停止录制   */  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   */  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;  }  //返回录制的视频文件  public File getmVecordFile() {    return mVecordFile;  }  /**   * 录制完成回调接口   */  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();    }  }}

2.视频录制界面文件movie_recorder_view.

<?  ="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>

做好这些准备工作,下面我们就可以开始设计我们的视频录制功能了。PS:以上代码取至网上,在此向大牛致敬。

3.拍摄主界面,拍摄界面有两部分组成,上面是视频拍摄控件显示,下面是用户点击拍摄按钮,配置文件:activity_main.

<?  ="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"   android:background="@android:color/white"  android:orientation="vertical">  <com.example.wechatvideorecorddemo.MovieRecorderView    android:id="@+id/movieRecorderView"    android:layout_width="match_parent"    android:layout_height="0dp"    android:layout_weight="1"    android:layout_margin="3dp" />    <Button    android:id="@+id/shoot_button"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center"    android:background="@drawable/bg_movie_add_shoot"    android:text="按住拍"     android:textColor="#20b6ff"/></LinearLayout>

4.有了主界面的视图,下面我们就开始书写我们的Activity文件MainActivity.java:

public class MainActivity extends Activity {  private MovieRecorderView mRecorderView;//视频录制控件  private Button mShootBtn;//视频开始录制按钮  private boolean isFinish = true;  private boolean success = false;//防止录制完成后出现多次跳转事件  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mRecorderView = (MovieRecorderView) findViewById(R.id.movieRecorderView);    mShootBtn = (Button) findViewById(R.id.shoot_button);    //用户长按事件监听    mShootBtn.setOnTouchListener(new OnTouchListener() {      @Override      public boolean onTouch(View v, MotionEvent event) {        if (event.getAction() == MotionEvent.ACTION_DOWN) {//用户按下拍摄按钮          mShootBtn.setBackgroundResource(R.drawable.bg_movie_add_shoot_select);          mRecorderView.record(new OnRecordFinishListener() {            @Override            public void onRecordFinish() {              if(!success&&mRecorderView.getTimeCount()<10){//判断用户按下时间是否大于10秒                success = true;                handler.sendEmptyMessage(1);              }            }          });        } else if (event.getAction() == MotionEvent.ACTION_UP) {//用户抬起拍摄按钮          mShootBtn.setBackgroundResource(R.drawable.bg_movie_add_shoot);          if (mRecorderView.getTimeCount() > 3){//判断用户按下时间是否大于3秒            if(!success){              success = true;              handler.sendEmptyMessage(1);            }          } else {            success = false;            if (mRecorderView.getmVecordFile() != null)              mRecorderView.getmVecordFile().delete();//删除录制的过短视频            mRecorderView.stop();//停止录制            Toast.makeText(MainActivity.this, "视频录制时间太短", Toast.LENGTH_SHORT).show();          }        }        return true;      }    });  }  @Override  public void onResume() {    super.onResume();    isFinish = true;    if (mRecorderView.getmVecordFile() != null)      mRecorderView.getmVecordFile().delete();//视频使用后删除  }  @Override  public void onSaveInstanceState(Bundle outState) {    super.onSaveInstanceState(outState);    isFinish = false;    success = false;    mRecorderView.stop();//停止录制  }  @Override  public void onPause() {    super.onPause();  }  @Override  public void onDestroy() {    super.onDestroy();  }  private Handler handler = new Handler() {    @Override    public void handleMessage(Message msg) {      if(success){        finishActivity();      }    }  };  //视频录制结束后,跳转的函数  private void finishActivity() {    if (isFinish) {      mRecorderView.stop();      Intent intent = new Intent(this, SuccessActivity.class);      Bundle bundle = new Bundle();      bundle.putString("text", mRecorderView.getmVecordFile().toString());      intent.putExtras(bundle);      startActivity(intent);    }    success = false;  }  /**   * 录制完成回调   */   public interface OnShootCompletionListener {     public void OnShootSuccess(String path, int second);     public void OnShootFailure();   }}

到这里我们仿微信的短视频拍摄就已经大功告成,那么下面我们检验一下,我们录制的效果如何,下面我以Android提供的视频播放控件(VideoView)为大家介绍一下如何播放录制的短视频。

5.播放视频的配置文件activity_success.

<?  ="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"   android:background="@android:color/white"  android:orientation="vertical">  <TextView     android:id="@+id/text"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center"    android:text="@string/app_name" />  <LinearLayout     android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal"    >    <Button       android:id="@+id/button1"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:layout_weight="1"      android:gravity="center"      android:padding="5dp"      android:text="播放"      />    <Button       android:id="@+id/button2"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:layout_weight="1"      android:gravity="center"      android:padding="5dp"      android:text="暂停"      />    <Button       android:id="@+id/button3"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:layout_weight="1"      android:gravity="center"      android:padding="5dp"      android:text="重播"      />    <Button       android:id="@+id/button4"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:layout_weight="1"      android:gravity="center"      android:padding="5dp"      android:text="视频长度"      />  </LinearLayout>  <VideoView    android:id="@+id/videoView1"    android:layout_width="wrap_content"    android:layout_height="500dp" /></LinearLayout>

6.视频播放的控制代码SuccessActivity.java:

public class SuccessActivity extends Activity implements OnClickListener{  private TextView text;//视频保存的路径  private Button button1;//播放开关  private Button button2;//暂停开关  private Button button3;//重新播放开关  private Button button4;//视频大小开关  private VideoView videoView1;//视频播放控件  private String file;//视频路径  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_success);    Bundle bundle = getIntent().getExtras();    file = bundle.getString("text");//获得拍摄的短视频保存地址    init();    setValue();  }  //初始化  private void init() {    text = (TextView) findViewById(R.id.text);    button1 = (Button) findViewById(R.id.button1);    button2 = (Button) findViewById(R.id.button2);    button3 = (Button) findViewById(R.id.button3);    button4 = (Button) findViewById(R.id.button4);    videoView1 = (VideoView) findViewById(R.id.videoView1);  }    //设置  private void setValue() {    text.setText(file);    button1.setOnClickListener(this);    button2.setOnClickListener(this);    button3.setOnClickListener(this);    button4.setOnClickListener(this);    videoView1.setVideoPath(file);  }  @Override  public void onClick(View v) {    switch (v.getId()) {    case R.id.button1:      videoView1.start();      break;          case R.id.button2:      videoView1.pause();          break;              case R.id.button3:      videoView1.resume();      videoView1.start();      break;          case R.id.button4:      Toast.makeText(this, "视频长度:"+(videoView1.getDuration()/1024)+"M", Toast.LENGTH_SHORT).show();      break;    default:      break;    }  }  }

功能界面截图:

  

  

好了,到这里关于拍摄短视频的知识就和大家分享完毕,具体的实现很简单,相信大家看到这里已经已经学会了,当然如果你还有什么疑问,可以留言讨论。最后给大家分享一个demo的下载地址,方便大家下载学习,下载地址:http://pan.baidu.com/s/1hqts0pm