Android仿微信拍攝短視頻

近期做項目需要添加上傳短視頻功能，功能設置為類似於微信，點擊開始拍攝，設置最長拍攝時間，經過研究最終實現了這個功能，下面就和大家分享一下，希望對你有幫助。

1.視頻錄制自定義控件：

/**
 * 視頻播放控件
 */
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;// 計時器
    private OnRecordFinishListener mOnRecordFinishListener;// 錄制完成回調接口

    private int mWidth;// 視頻分辨率寬度
    private int mHeight;// 視頻分辨率高度
    private boolean isOpenCamera;// 是否一開始就打開攝像頭
    private int mRecordMaxTime;// 一次拍攝最長時間
    private int mTimeCount;// 時間計數
    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);// 默認320
        mHeight = a.getInteger(R.styleable.MovieRecorderView_height, 240);// 默認240

        isOpenCamera = a.getBoolean(
                R.styleable.MovieRecorderView_is_open_camera, true);// 默認打開
        mRecordMaxTime = a.getInteger(
                R.styleable.MovieRecorderView_record_max_time, 10);// 默認為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);// 設置進度條最大量

        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();
        }

    }

    /**
     * 初始化攝像頭
     */
    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();
    }

    /**
     * 設置攝像頭為豎屏
     */
    private void setCameraParams() {
        if (mCamera != null) {
            Parameters params = mCamera.getParameters();
            params.set("orientation", "portrait");
            mCamera.setParameters(params);
        }
    }

    /**
     * 釋放攝像頭資源
     */
    private void freeCameraResource() {
        if (mCamera != null) {
            mCamera.setPreviewCallback(null);
            mCamera.stopPreview();
            mCamera.lock();
            mCamera.release();
            mCamera = null;
        }
    }

    private void createRecordDir() {
        //錄制的視頻保存文件夾
        File sampleDir = new File(Environment.getExternalStorageDirectory()
                + File.separator + "ysb/video/");//錄制視頻的保存地址
        if (!sampleDir.exists()) {
            sampleDir.mkdirs();
        }
        File vecordDir = sampleDir;
        // 創建文件
        try {
            mVecordFile = File.createTempFile("recording", ".mp4", vecordDir);// mp4格式的錄制的視頻文件
        } 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);// 視頻源
        mMediaRecorder.setAudioSource(AudioSource.MIC);// 音頻源
        mMediaRecorder.setOutputFormat(OutputFormat.MPEG_4);// 視頻輸出格式
        mMediaRecorder.setAudioEncoder(AudioEncoder.AMR_NB);// 音頻格式
        mMediaRecorder.setVideoSize(mWidth, mHeight);// 設置分辨率：
        // mMediaRecorder.setVideoFrameRate(16);// 這個我把它去掉了，感覺沒什么用
        mMediaRecorder.setVideoEncodingBitRate(1 * 1024 * 1024 * 100);// 設置幀頻率，然后就清晰了
        mMediaRecorder.setOrientationHint(90);// 輸出旋轉90度，保持豎屏錄制
        mMediaRecorder.setVideoEncoder(VideoEncoder.MPEG_4_SP);// 視頻錄制格式
        // 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();
        }
    }

    /**
     * 開始錄制視頻
     * @param fileName
     *            視頻儲存位置
     * @param onRecordFinishListener
     *            達到指定時間之后回調接口
     */
    public void record(final OnRecordFinishListener onRecordFinishListener) {
        this.mOnRecordFinishListener = onRecordFinishListener;
        createRecordDir();
        try {
            if (!isOpenCamera)// 如果未打開攝像頭，則打開
                initCamera();
            initRecord();
            mTimeCount = 0;// 時間計數器重新賦值
            mTimer = new Timer();
            mTimer.schedule(new TimerTask() {

                @Override
                public void run() {
                    mTimeCount++;
                    mProgressBar.setProgress(mTimeCount);// 設置進度條
                    if (mTimeCount == mRecordMaxTime) {// 達到指定時間，停止拍攝
                        stop();
                        if (mOnRecordFinishListener != null)
                            mOnRecordFinishListener.onRecordFinish();
                    }
                }
            }, 0, 1000);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 停止拍攝
     */
    public void stop() {
        stopRecord();
        releaseRecord();
        freeCameraResource();
    }

    /**
     * 停止錄制
     */
    public void stopRecord() {
        mProgressBar.setProgress(0);
        if (mTimer != null)
            mTimer.cancel();
        if (mMediaRecorder != null) {
            // 設置后不會崩
            mMediaRecorder.setOnErrorListener(null);
            mMediaRecorder.setPreviewDisplay(null);
            try {
                mMediaRecorder.stop();
            } catch (IllegalStateException e) {
                e.printStackTrace();
            } catch (RuntimeException e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 釋放資源
     */
    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;
    }

    //返回錄制的視頻文件
    public File getmVecordFile() {
        return mVecordFile;
    }

    /**
     * 錄制完成回調接口
     */
    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.視頻錄制界面文件movie_recorder_view.xml：

<?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>

做好這些准備工作，下面我們就可以開始設計我們的視頻錄制功能了。PS：以上代碼取至網上，在此向大牛致敬。

3.拍攝主界面，拍攝界面有兩部分組成，上面是視頻拍攝控件顯示，下面是用戶點擊拍攝按鈕，配置文件：activity_main.xml。

<?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/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.有了主界面的視圖，下面我們就開始書寫我們的Activity文件MainActivity.java：

public class MainActivity extends Activity {

    private MovieRecorderView mRecorderView;//視頻錄制控件
    private Button mShootBtn;//視頻開始錄制按鈕
    private boolean isFinish = true;
    private boolean success = false;//防止錄制完成后出現多次跳轉事件

    @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);

        //用戶長按事件監聽
        mShootBtn.setOnTouchListener(new OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {//用戶按下拍攝按鈕
                    mShootBtn.setBackgroundResource(R.drawable.bg_movie_add_shoot_select);
                    mRecorderView.record(new OnRecordFinishListener() {

                        @Override
                        public void onRecordFinish() {
                            if(!success&&mRecorderView.getTimeCount()<10){//判斷用戶按下時間是否大於10秒
                                success = true;
                                handler.sendEmptyMessage(1);
                            }
                        }
                    });
                } else if (event.getAction() == MotionEvent.ACTION_UP) {//用戶抬起拍攝按鈕
                    mShootBtn.setBackgroundResource(R.drawable.bg_movie_add_shoot);
                    if (mRecorderView.getTimeCount() > 3){//判斷用戶按下時間是否大於3秒
                        if(!success){
                            success = true;
                            handler.sendEmptyMessage(1);
                        }
                    } else {
                        success = false;
                        if (mRecorderView.getmVecordFile() != null)
                            mRecorderView.getmVecordFile().delete();//刪除錄制的過短視頻
                        mRecorderView.stop();//停止錄制
                        Toast.makeText(MainActivity.this, "視頻錄制時間太短", Toast.LENGTH_SHORT).show();
                    }
                }
                return true;
            }
        });
    }

    @Override
    public void onResume() {
        super.onResume();
        isFinish = true;
        if (mRecorderView.getmVecordFile() != null)
            mRecorderView.getmVecordFile().delete();//視頻使用后刪除
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        isFinish = false;
        success = false;
        mRecorderView.stop();//停止錄制
    }

    @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();
            }
        }
    };

    //視頻錄制結束后，跳轉的函數
    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;
    }

    /**
     * 錄制完成回調
     */
     public interface OnShootCompletionListener {
         public void OnShootSuccess(String path, int second);
         public void OnShootFailure();
     }
}

到這里我們仿微信的短視頻拍攝就已經大功告成，那么下面我們檢驗一下，我們錄制的效果如何，下面我以Android提供的視頻播放控件(VideoView)為大家介紹一下如何播放錄制的短視頻。

5.播放視頻的配置文件activity_success.xml：

<?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/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="暫停"
            />
        <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="視頻長度"
            />
    </LinearLayout>
    <VideoView
        android:id="@+id/videoView1"
        android:layout_width="wrap_content"
        android:layout_height="500dp" />

</LinearLayout>

6.視頻播放的控制代碼SuccessActivity.java:

public class SuccessActivity extends Activity implements OnClickListener{

    private TextView text;//視頻保存的路徑
    private Button button1;//播放開關
    private Button button2;//暫停開關
    private Button button3;//重新播放開關
    private Button button4;//視頻大小開關
    private VideoView videoView1;//視頻播放控件
    private String file;//視頻路徑

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_success);
        Bundle bundle = getIntent().getExtras();
        file = bundle.getString("text");//獲得拍攝的短視頻保存地址
        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);
    }
    
    //設置
    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, "視頻長度："+(videoView1.getDuration()/1024)+"M", Toast.LENGTH_SHORT).show();
            break;

        default:
            break;
        }
    }
    
}

7.添加權限：

<!-- 視頻錄制的權限star   -->
<!-- 攝像頭  -->
<uses-permission android:name="android.permission.CAMERA" />
<!-- 音頻即聲音  -->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<!-- sd卡寫入權限  -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- 硬件支持   -->
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<!-- 視頻錄制的權限end   -->

功能界面截圖：

　　

　　

好了，到這里關於拍攝短視頻的知識就和大家分享完畢，具體的實現很簡單，相信大家看到這里已經已經學會了，當然如果你還有什么疑問，可以留言討論。最后給大家分享一個demo的下載地址，方便大家下載學習，下載地址：http://pan.baidu.com/s/1hqts0pm