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今天小编给大家分享一下java怎么初始化MediaRecorder的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
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java中初始化MediaRecorder
实现代码：
private boolean initializeVideo() {
Log.v(TAG, "initializeVideo");
if (mSurfaceHolder == null) {
Log.v(TAG, "SurfaceHolder is null");
return false;
}
mMediaRecorderRecording = true;
if (mMediaRecorder == null)
mMediaRecorder = new MediaRecorder();
else
mMediaRecorder.reset();
if (mCamera != null) {
if (Integer.parseInt(Build.VERSION.SDK) >= 8)
VideoCameraNew2.reconnect(mCamera);
mCamera.release();
mCamera = null;
}
if (useFront && Integer.parseInt(Build.VERSION.SDK) >= 5) {
if (isAvailableSprintFFC)
{
try
{
Method method = Class.forName("android.hardware.HtcFrontFacingCamera").getDeclaredMethod("getCamera", null);
mCamera = (Camera) method.invoke(null, null);
}
catch (Exception ex)
{
Log.d(TAG, ex.toString());
}
} else {
mCamera = Camera.open();
Camera.Parameters parameters = mCamera.getParameters();
parameters.set("camera-id", 2);
mCamera.setParameters(parameters);
}
VideoCameraNew.unlock(mCamera);
mMediaRecorder.setCamera(mCamera);
mVideoPreview.setOnClickListener(this);
}
mVideoPreview.setOnLongClickListener(this);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setOutputFile(sender.getFileDescriptor());
mMediaRecorder.setVideoFrameRate(20);
if (videoQualityHigh) {
mMediaRecorder.setVideoSize(352,288);
} else {
mMediaRecorder.setVideoSize(176,144);
}
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
try {
mMediaRecorder.prepare();
mMediaRecorder.setOnErrorListener(this);
mMediaRecorder.start();
} catch (IOException exception) {
releaseMediaRecorder();
finish();
return false;
}
return true;
}private boolean initializeVideo() {
Log.v(TAG, "initializeVideo");
if (mSurfaceHolder == null) {
Log.v(TAG, "SurfaceHolder is null");
return false;
}
mMediaRecorderRecording = true;
if (mMediaRecorder == null)
mMediaRecorder = new MediaRecorder();
else
mMediaRecorder.reset();
if (mCamera != null) {
if (Integer.parseInt(Build.VERSION.SDK) >= 8)
VideoCameraNew2.reconnect(mCamera);
mCamera.release();
mCamera = null;
}
if (useFront && Integer.parseInt(Build.VERSION.SDK) >= 5) {
if (isAvailableSprintFFC)
{
try
{
Method method = Class.forName("android.hardware.HtcFrontFacingCamera").getDeclaredMethod("getCamera", null);
mCamera = (Camera) method.invoke(null, null);
}
catch (Exception ex)
{
Log.d(TAG, ex.toString());
}
} else {
mCamera = Camera.open();
Camera.Parameters parameters = mCamera.getParameters();
parameters.set("camera-id", 2);
mCamera.setParameters(parameters);
}
VideoCameraNew.unlock(mCamera);
mMediaRecorder.setCamera(mCamera);
mVideoPreview.setOnClickListener(this);
}
mVideoPreview.setOnLongClickListener(this);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mMediaRecorder.setOutputFile(sender.getFileDescriptor());
mMediaRecorder.setVideoFrameRate(20);
if (videoQualityHigh) {
mMediaRecorder.setVideoSize(352,288);
} else {
mMediaRecorder.setVideoSize(176,144);
}
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
try {
mMediaRecorder.prepare();
mMediaRecorder.setOnErrorListener(this);
mMediaRecorder.start();
} catch (IOException exception) {
releaseMediaRecorder();
finish();
return false;
}
return true;
}private void releaseMediaRecorder() {
Log.v(TAG, "Releasing media recorder.");
if (mMediaRecorder != null) {
mMediaRecorder.reset();
if (mCamera != null) {
if (Integer.parseInt(Build.VERSION.SDK) >= 8)
VideoCameraNew2.reconnect(mCamera);
mCamera.release();
mCamera = null;
}
mMediaRecorder.release();
mMediaRecorder = null;
}
}
public void onError(MediaRecorder mr, int what, int extra) {
if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) {
finish();
}
}private void releaseMediaRecorder() {
Log.v(TAG, "Releasing media recorder.");
if (mMediaRecorder != null) {
mMediaRecorder.reset();
if (mCamera != null) {
if (Integer.parseInt(Build.VERSION.SDK) >= 8)
VideoCameraNew2.reconnect(mCamera);
mCamera.release();
mCamera = null;
}
mMediaRecorder.release();
mMediaRecorder = null;
}
}
public void onError(MediaRecorder mr, int what, int extra) {
if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) {
finish();
}
}private void stopVideoRecording() {
Log.v(TAG, "stopVideoRecording");
if (mMediaRecorderRecording || mMediaRecorder != null) {
Receiver.listener_video = null;
t.interrupt();
RtpStreamSender.delay = 0;
if (mMediaRecorderRecording && mMediaRecorder != null) {
try {
mMediaRecorder.setOnErrorListener(null);
mMediaRecorder.setOnInfoListener(null);
mMediaRecorder.stop();
} catch (RuntimeException e) {
Log.e(TAG, "stop fail: " + e.getMessage());
}
mMediaRecorderRecording = false;
}
releaseMediaRecorder();
}
}以上就是“java怎么初始化MediaRecorder”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注创新互联行业资讯频道。
