java制作仿微信录制小视频控件
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
MovieRecorderView.java
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
<?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
<?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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