本文為用 MediaRecorder 錄制小視頻的控件，可以設置視頻錄制的時間、空間大小、初始時是否打開攝像頭等。 此控件為組合控件，繼承自 LinearLayout ,為防止出錯，需實現 android.media.MediaRecorder.OnErrorListener 接口。
小視頻錄制界面
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; /** * 視頻播放控件 * * @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;// 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); } 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(); } /** * * @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(); } } /** * 初始化攝像頭 * * @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(); } /** * 設置攝像頭為豎屏 * * @author liuyinjun * @date 2015-2-5 */ private void setCameraParams() { if (mCamera != null) { Parameters params = mCamera.getParameters(); params.set("orientation", "portrait"); mCamera.setParameters(params); } } /** * 釋放攝像頭資源 * * @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; // 創建文件 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);// 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 * 512);// 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 * * @author liuyinjun * @date 2015-2-5 * @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() { // TODO Auto-generated method stub 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 * * @author liuyinjun * @date 2015-2-5 */ public void stop() { stopRecord(); releaseRecord(); freeCameraResource(); } /** * 停止錄制 * * @author liuyinjun * @date 2015-2-5 */ 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 * * @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; } /** * 錄制完成回調接口 * * @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> |
以上所述就是本文的全部內容了，希望大家能夠喜歡。
